Tolebrutinib for multiple sclerosis

Abstract

This disclosure relates to the field of therapeutic tyrosine kinase inhibitors, in particular, Bruton tyrosine kinase ("BTK") inhibitors, for treatment of patients with multiple sclerosis (MS).

Description

Attorney Docket No. 01183-0339-00PCT-PRNTHERAPEUTIC TYROSINE KINASE INHIBITORS FOR MULTIPLE SCLEROSISCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Application No. 63 / 689,584, filed on August 30, 2024, U.S. Provisional Application No. 63 / 689,585, filed on August 30,2024, U.S. Provisional Application No. 63 / 695,738, filed on September 17, 2024, U.S. Provisional Application No. 63 / 733,309, filed on December 12, 2024, U.S. Provisional Application No. 63 / 763,718, filed on February 26, 2025, U.S. Provisional Application No. 63 / 770,569, filed on March 12, 2025, Canadian Application No. 3268726, filed on March 24,2025, and U.S. Provisional Application No. 63 / 861,769 filed August 11, 2025, all of which are incorporated by reference herein in their entirety for any purpose.FIELD

[0002] The present application relates to the use of therapeutic tyrosine kinase inhibitors, in particular, Bruton tyrosine kinase (“BTK”) inhibitors, for treatment of patients with multiple sclerosis (MS).INTRODUCTION

[0003] This disclosure relates to the field of therapeutic tyrosine kinase inhibitors, in particular, Bruton tyrosine kinase (“BTK”) inhibitors, for treating multiple sclerosis (MS). MS is a chronic, immune-mediated, neurodegenerative disease affecting more than 1 million people worldwide, which results in accumulation of irreversible disabilities over time. The physical and cognitive disability impairments translate into gradual deterioration of health status and lower quality of life, impacting patients’ care and life expectancy. It is the most common cause of neurological disability in young and middle-aged adults and has a major physical, psychological, social and financial impact on subjects and their families. MS involves an immune-mediated process in which an abnormal response of the body’s immune system is directed against the central nervous system (CNS). In the course of the disease, scleroses, i.e., lesions or scars, appear in the myelin sheath of nerve cells, disrupting transmission of electrical signals. Scleroses accumulate over time and result in the debilitating symptoms experienced by MS patients.

[0004] Historically, MS patients have been generally categorized as experiencing one of four clinical courses of disease, each of which might be mild, moderate, or severe: clinically isolated syndrome, relapsing remitting, secondary progressive (e.g., non-relapsing secondaryAttorney Docket No. 01183-0339-00PCT-PRN progressive multiple sclerosis (“nrSPMS”)) and primary progressive (“PPMS”). About 85% of MS patients have the relapsing remitting form of the disease, in which they experience clearly defined relapses (also called flare-ups or exacerbations), which are episodes of new or worsening symptoms (i.e., worsening neurologic function), followed by periods of partial or complete recovery (remissions). Within the scope of the present disclosure, “relapsing multiple sclerosis,” “relapsing MS,” “relapsing forms of MS,” or “RMS” may include clinically isolated syndrome (“CIS”), relapsing remitting multiple sclerosis (“RRMS”), and relapsing secondary progressive multiple sclerosis (“R-SPMS”). (See, e.g., Lublin et al., Defining the clinical course of multiple sclerosis; the 2013 revisions, Neurology 2014;83:278-286.) nrSPMS refers to a disease state in which the patient has stopped experiencing confirmed relapses but continues to experience accumulation of disability, experienced as various symptoms such as gait impairment, fatigue, cognition impairment, balance difficulties, loss of bowel and / or bladder function, sexual disfunction, amongst others. PPMS refers to a disease state in which the patient experiences accumulation of disability, independent of relapses, since the onset of the disease clinical manifestation, but it likely does not have pathophysiologically distinct features from relapsing forms of MS that have entered a progressive course (SPMS). (See, e.g., Lublin et al.)

[0005] More recently, a new dogma is emerging in the field of MS, which focuses on relapse-independent disability accumulation or accrual as the key component for disease progression verses frequency of relapses (See, e.g., Kappos et al., JAMA Neurology 2020;77(9): l 132-1 140). The authors analyzed the relative contributions of progression independent of relapse activity (PIRA) and relapse-associated worsening (RAW) to overall accumulation or accrual of disability in 1656 patients with relapsing multiple sclerosis from two randomized phase 3 clinical trials (OPERA I and II). The results demonstrated that approximately 80% to 90% of confirmed disability events occur in the absence of relapses, challenging the current clinical distinction of relapsing and progressive forms of multiple sclerosis.

[0006] Immunomodulatory drugs have been the mainstay of MS therapy. Recent results from clinical studies have demonstrated efficacy of agents that target B lymphocytes, especially B-cell- depleting agents like ocrelizumab (anti-CD20) (Hauser et al., N Engl J Med. 2017;376(3):221-34).

[0007] Targeting B-cells represents a departure from the prevailing dogma based on animal models that demonstrated therapeutic benefits from modulating T-cell activity and positions the B cell as the centerpiece of current MS drug development (Lehmann- Hom K et al., Int JAttorney Docket No. 01183-0339-00PCT-PRNMol Sci.2017;18(10):2048). The importance of immune cells residing in the CNS is also well known and needs to be considered in MS pathogenesis (Hemmer B et al, Nat Clin Pract Neurol. 2006;2(4):201-l 1).

[0008] Tolebrutinib is a BTK inhibitor that is being investigated as a disease modifying therapy to treat MS. The Bruton’s tyrosine kinase pathway is critical to signaling in B lymphocytes and myeloid cells including CNS microglia. Each of these cell types has been implicated in the pathophysiology of multiple sclerosis. Further, as BTK signaling is vital for maturation of B cells into antibody- secreting plasma cells, BTK inhibition can modulate both cellular and humoral immunity.

[0009] Accordingly, an inhibitor of BTK signaling represents a dual mechanism targeting both aspects of the immune system.

[0010] Accordingly, compounds that inhibit BTK that are able to both inhibit antigen- induced B-cell activation responsible for focal inflammation and modulate maladaptive, CNS- resident microglial cells linked to neuroinflammation in the brain and spinal cord may be useful in treating both relapsing and progressive forms of MS, as traditionally categorized, and / or reducing the risk of disability accumulation with superior benefits when compared to currently available therapies.

[0011] Drug-induced liver injury has been identified in the ongoing tolebrutinib Phase 3 trials. The reported events occurred between months 2 to 3 after the start of tolebrutinib administration, and the elevation of liver enzymes appears reversible after tolebrutinib discontinuation. Thus, there is a need to mitigate the risk of hepatic injury and provide safe treatment for patients with MS.SUMMARY

[0012] Disclosed herein is a method of reducing disability accumulation independent of relapse activity in a patient with secondary progressive MS in need thereof comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0013] Provided herein is a method of treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs: (a) the risk of confirmed disability progression (CDP) is reduced; (b) the total number of new and / orAttorney Docket No. 01183-0339-00PCT-PRN enlarging T2-hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced; (c) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months is reduced; and (d) the chance of confirmed disability improvement (CDI) is improved.

[0014] Also disclosed herein is a method of treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) is reduced.

[0015] In some embodiments, disclosed herein is a method of reducing the risk of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0016] In some embodiments, disclosed herein is a method of reducing the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, in a patient with nonrelapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0017] In some embodiments, disclosed herein is a method of reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0018] In some embodiments, disclosed herein is a method of reducing the risk of sustained20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0019] In some embodiments, disclosed herein is a method of improving the chance of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.Attorney Docket No. 01183-0339-00PCT-PRN

[0020] In some embodiments, disclosed herein is a method of improving time to onset of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0021] In some embodiments, disclosed herein is a method of improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0022] In some embodiments, disclosed herein is a method of improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0023] In some embodiments, disclosed herein is a method of improving time to onset of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0024] In some embodiments, disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in at least one of: (i) treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (ii) reducing the risk of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (iii) reducing the total number of new and / or enlarging T2-hyperin tense lesions as detected by MRI in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (iv) reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (v) reducing the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (vi) improving the chance of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (vii) improving time to onset of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (viii) inAttorney Docket No. 01183-0339-00PCT-PRN improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); (ix) in improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS); and (x) improving time to onset of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), in certain methods described herein.

[0025] Also disclosed herein is a method of reducing the risk of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0026] In some embodiments, disclosed herein is a method of improving time to onset of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0027] In some embodiments, provided herein a method of improving percent change in brain volume loss (B VL) as detected by brain MRI in a patient with relapsing forms of multiple sclerosis (RMS), comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0028] In some embodiments, disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in at least one of (i) reducing the risk of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS); (ii) improving time to onset of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS); and (iii) improving percent change in brain volume loss (BVL) as detected by brain MRI in a patient with a relapsing form of multiple sclerosis (RMS), in certain methods described herein.

[0029] Still further disclosed herein is a method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs: (a) the risk of confirmed disability progression (CDP) is reduced; (b) the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced; (c) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months is reduced; (d) theAttorney Docket No. 01183-0339-00PCT-PRN risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months is reduced; (e) the chance of confirmed disability improvement (CDI) is improved; and (f) the percent change in brain volume loss (BVL) as detected by brain MRI is improved.

[0030] In some embodiments, disclosed herein is a method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) is reduced, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25- foot walk (T25-FW) test confirmed over at least 3 months; and (c) sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months.

[0031] In some embodiments, disclosed herein is a method of reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; and (c) sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months.

[0032] In some embodiments, disclosed herein is a method of improving time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; and (c) sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months.

[0033] In some embodiments, disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in at least one of (i) treating a patient with primary progressive multiple sclerosis (PPMS); (ii) reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS); and (iii) improving time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS), in certain methods described herein.Attorney Docket No. 01183-0339-00PCT-PRN

[0034] The present disclosure also relates to a method of treating disability accumulation in a patient with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0035] In some embodiments, provided herein is a method of treating disability progression independent of relapse activity in a patient with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0036] In some embodiments, disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in at least one of (i) treating disability accumulation in a patient with multiple sclerosis; and (ii) treating disability progression independent of relapse activity in a patient with multiple sclerosis, in certain methods described herein.BRIEF DESCRIPTION OF DRAWINGS

[0037] FIG. 1 A provides the study design of Example 1. '"The frequency of LFT monitoring in the first 90 days increased from monthly to once every 2 weeks from week 4 following a protocol amendment on May 23, 2022. Further monitoring at week 2 and weekly from week 4-12 was added after an additional amendment on September 13, 2022. Week 3 monitoring was added in the November 10, 2023 amendment. The 28-day screening period was considered Month -1. H EOS safety follow-up visit occurred 4 weeks after the last dose of study treatment for participants not entering the long-term safety study.5AI1 participants who completed the trial were offered enrollment in a long-term safety study with open-label tolebrutinib. CDP, confirmed disability progression; EDSS, Expanded Disability Status Scale; EOS, end of study; LFT, liver function test; MRI, magnetic resonance imaging; nrSPMS, nonrelapsing secondary progressive MS; SPMS, secondary progressive MS; R, randomisation.

[0038] FIG. IB provides the study design of Example 2. ‘"The frequency of LFT monitoring in the first 90 days increased from monthly to once every 2 weeks from week 4 following a protocol amendment on May 23, 2022. Further monitoring at week 2 and weekly from week 4-12 was added after an additional amendment on September 13, 2022. Week 3 monitoring was added in the December 20, 2023 amendment. *The 28-day screening period was considered Month -1. llEOS safety follow-up visit occurred 4 weeks after the last dose of study treatment for participants not entering the long-term safety study.5All participants who completed the trial were offered enrollment in a long-term safety study with open-label tolebrutinib. *Approximate number of events in both treatment arms for the pooled data from GEMINI 1Attorney Docket No. 01183-0339-00PCT-PRN and 2. CDW, confirmed disability worsening; EDSS, Expanded Disability Status Scale; EOS, end of study; MRI, magnetic resonance imaging; R, randomisation.

[0039] FIG. 1C provides the study design of Example 3.

[0040] FIG. 2 provides suggested actions and follow-up assessments in the event of neutropenia. *For individuals of African descent, the relevant value of concern is <1000 / mm3.

[0041] FIG. 3 provides suggested actions and follow-up assessments in the event of thrombocytopenia. aPTT: activated partial thromboplastin time; EDTA: Ethylene- diaminetetraacetic acid; INR: international normalized ratio; PK: pharmacokinetic; PT: prothrombin time.

[0042] FIG. 4 provides suggested actions and follow-up assessments in the event of increased alanine aminotransferase (ALT) algorithm. *If unable to reset in 72 hours, use original laboratory results to decide on further reporting / monitoring / discontinuation. ALT: alanine aminotransferase; AST: aspartate aminotransferase; CRF: case report form; IMP: investigational medicinal product; INR: international normalized ratio; ULN: upper limit of normal.

[0043] FIG. 5 provides suggested actions and follow-up assessments in the event of serum creatinine. ARF, acute renal failure; ULN, upper limit of normal; DIC, disseminated intravascular coagulation; CPK, creatine phosphokinase; ECG, electrocardiogram; PK, pharmacokinetic(s).

[0044] FIG. 6 provides suggested actions and follow-up assessments in the event of increase in CPK of non-cardiac origin and not related to intensive physical activity. CK-MB, creatine kinase-MB; CK-MM, creatine kinase-MM; ECG, electrocardiogram; PK, pharmacokinetic(s); ULN, upper limit of normal.

[0045] FIG. 7 provides suggested actions and follow-up assessments when progressive multifocal leukoencephalopathy (PML) is suspected. CSF, cerebrospinal fluid; Gd, gadolinium; IMP, investigational medicinal product; JCV, John Cunningham virus; MRI, magnetic resonance imaging; PCR, polymerase chain reaction; PML, progressive multifocal leukoencephalopathy

[0046] FIG. 8 provides a description of the expanded disability status scale score (EDSS) in view of the level of disability.

[0047] FIG. 9 shows the participant disposition for 1131 randomized patients entering the study of Example 1. Note: A participant could have failed screening due to not meeting multiple eligibility criteria. ITT, intention-to-treat.Attorney Docket No. 01183-0339-00PCT-PRN

[0048] FIG. 10A is a plot showing the 6-month confirmed disability progression (CDP) for patients treated with tolebrutinib or placebo in the study of Example 1.a6-month CDP is defined as an increase of >1.0 point from baseline EDSS score when baseline score is <5.0 or an increase of >0.5 points when baseline score is >5.0, confirmed over >6 months. CDP, confirmed disability progression; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.bP-value is from Cox proportional hazards model. FIG. 10B is a plot showing the 6-month CDP from FIG. 10A without 6-month confirmation. FIG. 10C is a plot showing the 6-month CDP from FIG. 10A without imputation. FIG. 10D is a Forest plot of hazard ratios and corresponding 95% confidence intervals comparing tolebrutinib to placebo for time to onset of 6-month CDP within each subgroup.

[0049] FIG. 11 is a plot showing the 3-month confirmed disability progression (CDP) for patients treated with tolebrutinib or placebo in the study of Example 1. “3-month CDP is defined as an increase of >1.0 point from baseline EDSS score when baseline score is <5.0 or an increase of >0.5 points when baseline score is >5.0, confirmed over >3 months. CDP, confirmed disability progression; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.bP-value is from Cox proportional hazards model.

[0050] FIG. 12 shows the total number of new and / or enlarging T2-hyperin tense lesions as detected by MRI for patients treated with tolebrutinib or placebo in the study of Example 1. CI, confidence interval.

[0051] FIG. 13 is a plot showing the 3-month confirmed 20% increase in 9-hole peg test (9-HPT) for patients treated with tolebrutinib or placebo in the study of Example 1 .

[0052] FIG. 14 is a plot showing the 3-month confirmed 20% increase in the timed 25-foot walk test (T25-FW) for patients treated with tolebrutinib or placebo in the study of Example 1.

[0053] FIG. 15 is a plot showing the 6-month confirmed disability improvement (CDI) for patients treated with tolebrutinib or placebo in the study of Example 1. “6-month CDI is defined as a decrease of >1.0 point from baseline EDSS score confirmed over >6 months.bNominal p- value from Cox proportional hazards model. CDI, confirmed disability improvement; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.

[0054] FIG. 16 shows the percent change in brain volume loss (BVL) for patients treated with tolebrutinib or placebo in the study of Example 1. “Nominal p-value.bThe mean trial duration was 27 months. Note: BVL is measured as percentage change in brain volume from Month 6 to exclude the potential confounding effect of pseudoatrophy. At baseline, the median normalized brain volume was 1467.8 cm3(IQR, 1404.2-1529.3) for 746 participants in the tolebrutinib group and 1462.0 cm3 (1401.5-1515.0) for 375 participants in the placeboAttorney Docket No. 01183-0339-00PCT-PRN group.BL, baseline; LSM, least squares mean; EOS, end of study; IQR, interquartile range; SE, standard error.

[0055] FIG. 17 A shows a summary of percent adverse events for patients treated with tolebrutinib or placebo in the study of Example 1. FIG. 17B shows a summary of percent treatment emergent serious adverse events (TE SAEs) for patients treated with tolebrutinib or placebo. FIG. 17C shows a summary of percent adverse events of special interest (AESI) for patients treated with tolebrutinib or placebo. FIG. 17D shows a line plot subgroup analysis of patients with an absolute difference of less than 1 % for patients treated with tolebrutinib or placebo.

[0056] FIG. 18 shows a summary of percent peak on-treatment alanine aminotransferase (ALT) enzyme and biochemical Hy’s law for patients treated with tolebrutinib or placebo in the study of Example 1.aOne participant on tolebrutinib received a liver transplant and died due to post-operative complications. This case occurred prior to the implementation of a revised protocol with more stringent monitoring. ALT, alanine aminotransferase; BILI, bilirubin; ULN, upper limit of normal.

[0057] FIGS. 19A-19B shows the participant disposition for 974 randomized patients entering Gemini 1 (EFC16033) (FIG. 19A) and 899 randomized patients entering Gemini 2 (EFC16034) (FIG. 19B), as described in Example 2. Note: A participant could have failed screening due to not meeting multiple eligibility criteria. ECG, electrocardiogram; ITT, intention-to-treat.

[0058] FIG. 20 shows the annualized (adjudicated) relapse rate for patients treated with tolebrutinib or teriflunomide, where the patients were treated in either the Gemini 1 study (EFC16033, left), the Gemini 2 study (EFC16034, middle), or in a pooled analysis (right), of Example 2. ARR, annualized (adjudicated) relapse rate; CI, confidence interval.

[0059] FIG. 21 is a plot showing the 6-month confirmed disability worsening (CDW) for a pooled population of patients treated with tolebrutinib or teriflunomide in the studies of Example 2. Risk reduction is based on imputation for confirmed 3M-CDW without 6M confirmation due to end of study, p-value from stratified log-rank test.a6-month CDW is defined as a sustained increase from baseline in EDSS score of >1.5 points when baseline score is 0, >1.0 points when baseline score is 0.5 to <5.5 or >0.5 points when baseline score is >5.5, confirmed over >6 months.bNominal p-value (stratified log-rank test). CDW, confirmed disability worsening; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.Attorney Docket No. 01183-0339-00PCT-PRN

[0060] FIG. 22 is a plot showing the 3-month confirmed disability worsening (CDW) for a pooled population of patients treated with tolebrutinib or teriflunomide in the studies of Example 2.a3-month CDW is defined as a sustained increase from baseline in EDSS score of >1.5 points when baseline score is 0, >1.0 points when baseline score is 0.5 to <5.5 or >0.5 points when baseline score is >5.5, confirmed over >3 months.bNominal p-value (stratified log-rank test). CDW, confirmed disability worsening; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.

[0061] FIG. 23 is a plot showing the 6-month confirmed disability improvement (CDI) for a pooled population of patients treated with tolebrutinib or teriflunomide in the studies of Example 2. “6-month CDI is defined as a decrease of >1.0 point from baseline EDSS score confirmed over >6 months.bNominal p-value (stratified log-rank test). CDI, confirmed disability improvement; CI, confidence interval; EDSS, Expanded Disability Status Scale; HR, hazard ratio.

[0062] FIG. 24 shows the total number of new Gd-enhancing T1 -hyperintense lesions as detected by MRI for patients treated with tolebrutinib or teriflunomide, where the patients were treated in either the Gemini 1 study (EFC 16033, left) or the Gemini 2 study (EFC 16034, right) of Example 2. “Nominal p-value. Note: Data are mean (95% CI). CI, confidence interval; Gd, gadolinium; MRI, magnetic resonance imaging.

[0063] FIG. 25 shows the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI for patients treated with tolebrutinib or teriflunomide, where the patients were treated in either the Gemini 1 study (EFC 16033, left) or the Gemini 2 study (EFC 16034, right) of Example 2. “Nominal p-value. Note: Data are mean (95% CI). CI, confidence interval; Gd, gadolinium; MRI, magnetic resonance imaging.

[0064] FIGS. 26A-26B show the percent change in brain volume loss (BVL) for patients treated with tolebrutinib or teriflunomide, where the patients were treated in either the Gemini 1 study (EFC16033, FIG. 26A) or the Gemini 2 study (EFC16034, FIG. 26B) of Example 2. “Nominal p-value.bThe mean trial duration was 30 months for GEMINI 1 and 29 months for GEMINI 2. Note: n indicates the number of participants with EOS data. BVL is measured as percentage change in brain volume from Month 6 to exclude the potential confounding effect of pseudoatrophy. In GEMINI 1, mean (SD) normalized brain volume at baseline was 1533.0 (103.7) cm3in the tolebrutinib group and 1538.1 (92.4) cm3in the teriflunomide group. In GEMINI 2, mean (SD) normalized brain volume at baseline was 1547.1 (81.1) cm3 in the tolebrutinib group and 1551.4 (81.5) cm3in the teriflunomide group. BL, baseline; LSM, least squares mean; EOS, end of study; SE, standard error.Attorney Docket No. 01183-0339-00PCT-PRN

[0065] FIGS. 27A-27D show safety parameters associated with tolebrutinib treatment for a pooled population of patients from the Gemini 1 (EFC 16033) and Gemini 2 (EFC 16034) studies of Example 2. FIG. 27 A shows a summary of percent adverse events for patients treated with tolebrutinib or teriflunomide. FIG. 27B shows a summary of percent treatment emergent serious adverse events (TE SAEs) for patients treated with tolebrutinib or teriflunomide. FIG. 27C shows a summary of percent adverse events of special interest (AESI) for patients treated with tolebrutinib or teriflunomide. FIG. 27D shows a line plot subgroup analysis of patients (PTs) with an absolute difference of less than 1 % for patients treated with tolebrutinib or teriflunomide.

[0066] FIG. 28 shows a summary of percent peak on-treatment alanine aminotransferase (ALT) enzyme and biochemical Hy ’ s law for patients treated with tolebrutinib or teriflunomide for a pooled population of patients from the Gemini 1 (EFC 16033) and Gemini 2 (EFC 16034) studies of Example 2.

[0067] FIG. 29 is a summary of primary and hierarchically ordered secondary end points and results for the Hercules study in Example 1. 9-HPT, 9-HPT, 9-Hole Peg Test; CDI, confirmed disability improvement; CDP, confirmed disability progression; CI, confidence interval; diff., difference; EOS, end of study; HR, hazard ratio; LSM, least squares mean; T25- FW=timed 25-foot walk.

[0068] FIG. 30 is a summary of the hierarchical testing procedure for the Gemini 1 and Gemini 2 studies of Example 2, including pooled secondary endpoints. ARR, annualized (adjudicated) relapse rate; CDI, confirmed disability improvement; CDW, confirmed disability worsening; CVLT-II, California Verbal Learning Test - Second Edition; SDMT, Symbol Digit Modalities Test.

[0069] FIGS. 31A-31B show plots of the change in SDMT number of correct substitutions z-score from baseline over time for patients treated with tolebrutinib or teriflunomide in the Gemini 1 (EFC16033, FIG. 31 A) and Gemini 2 (EFC16034, FIG. 31B) studies of Example 2. *Data are the number of correct substitutions z-score. EOS, end of study; LSM, least squares mean; SDMT, Symbol Digit Modalities Test; SE, standard error.

[0070] FIGS. 32A-32B show plots of the change in CVLT-II total correct standardized score from baseline over time for patients treated with tolebrutinib or teriflunomide in the Gemini 1 (EFC16033, FIG. 32A) and Gemini 2 (EFC16034, FIG. 32B) studies of Example 2. *Data are the total correct standardized score. CVLT-II, California Verbal Learning Test - Second Edition; EOS, end of study; LSM, least squares mean; SE, standard error.Attorney Docket No. 01183-0339-00PCT-PRN

[0071] FIGS. 33A-33B show plots of the number of new gadolinium-enhancing Tl- weighted lesions over time for patients treated with tolebrutinib or terifhinomide in the Gemini 1 (EFC16033, FIG. 33A) and Gemini 2 (EFC16034, FIG. 33B) studies of Example 2. EOS, end of study; Gd, gadolinium; SE, standard error.

[0072] FIGS. 34A-34B is shows plots of the number of new / enlarging T2 lesions over time for patients treated with tolebrutinib or teriflunomide in the Gemini 1 (EFC 16033, FIG. 34A) and Gemini 2 (EFC16034, FIG. 34B) studies of Example 2. EOS, end of study; SE, standard error.

[0073] FIG. 35 is a Forest plot of hazard ratios and corresponding 95% confidence intervals comparing tolebrutinib to teriflunomide for time to onset of 6-month CDP within each subgroup for the intention-to-treat population pooled from the Gemini 1 and Gemini 2 studies of Example 2.

[0074] FIGS. 36A-36B show plots of the percentage of patients (left axes) in subgroups based on the number of baseline phase rim lesions (PRL) (0, 1-3, or >4) having 6-month CDP (FIG. 36A) or 6-month CDW (FIG. 36B) in the study of Example 1 and Example 2, respectively. Hazard ratios (HR) are shown on the right axes.

[0075] FIGS. 37A-37B show plots of Kaplan-Meier estimates of time to onset of 6-month CDW, progression independent of relapse activity (PIRA), and relapse-associated worsening (RAW) for for a pooled population of patients treated with teriflunomide (FIG. 37 A) or tolebrutinib (FIG. 37B) in the studies of Example 2.

[0076] FIG. 38 is a Forest plot of hazard ratios (HR) and corresponding 95% confidence intervals (CI) comparing tolebrutinib to placebo for time ot onset of 6-month CDP within subgroups defined by plasma exposure for tolebrutinib, M2, or tolebrutinib + M2 area-under- the curve (AUC) above or below median.

[0077] FIG. 39 is a plot of mean MSQoL-54 physical and mental health composite scores and subscale scores at baseline of the study of Example 1.

[0078] FIGS. 40A-40B are plots of the least squares mean (LSM) change from baseline in the (FIG. 40A) physical health composite score and (FIG. 40B) mental health composite scores at assessments over the course of the study, at end of study (EOS), and averaged across visits.aEOS assessment occurred between 18-43 months post-baseline (median [IQR]: 32 [28-36] months). P-values are nominal. B, baseline; SE, standard error; CI, confidence interval.

[0079] FIGS. 41A-41D show spider plots and Forest plots for the least squares mean (LSM) change from baseline and LSM difference versus placebo, respectively, at (FIG. 41 A)Attorney Docket No. 01183-0339-00PCT-PRNMonth 12, (FIG. 41B) Month 24, (FIG. 41C) end of study (EOS), and (FIG. 41D) averaged across visits. P-values are nominal (*P<0.05; **P<0.01; **P<0.001). CI, confidence interval.DETAILED DESCRIPTION

[0080] Reference will now be made in detail to certain embodiments, examples of which are illustrated in the accompanying drawings. While the disclosure provides various embodiments, it will be understood that they are not intended to limit the disclosure to those embodiments. On the contrary, the disclosure is intended to encompass alternatives, modifications, and equivalents, as will be appreviated by those of skill in the art, and may be included within the disclosure as defined by the appended claims.

[0081] The section headings used herein are for organizational purposes only and are not to be construed as limiting the desired subject matter in any way. In the event that any literature incorporated by reference contradicts any term defined in this specification, this specification controls.I. Definitions

[0082] Unless otherwise stated, the following terms used in the specification and claims are defined for the purposes of this disclosure and have the following meaning.

[0083] As used herein, “the BTK inhibitor,” “the BTK inhibitor compound,” and “the compound,” and “tolebrutinib” refers to (R)-l-(l-acryloylpiperidin-3-yl)-4-amino-3-(4- phenoxyphenyl)-lH-imidazo[4,5-c]pyridin-2(3H)-one having the following structure:Attorney Docket No. 01183-0339-00PCT-PRN which is also known as 4-amino-3-(4-phenoxyphenyl)-l-[(3R)-l-(prop-2-enoyl)piperidin-3-yl]-l ,3- dihydro-2H-imidazo[4,5-c]pyridin-2-one having the following structure:or a pharmaceutically acceptable salt thereof.

[0084] As used herein, the term “about” means approximately, in the region of, roughly, or around. When the term “about” is used in conjunction with a numerical range, it modifies that range by extending the boundaries above and below the numerical values set forth. In general, the term “about” is used herein to modify a numerical value above and below the stated value by a variance of 10%. In some embodiments, the term “about” is used herein to modify a numerical value above and below the stated value by a variance of 5%.

[0085] A “pharmaceutically acceptable carrier” or a “pharmaceutically acceptable excipient” means a carrier or an excipient that is useful in preparing a pharmaceutical composition that is generally safe, non-toxic and neither biologically nor otherwise undesirable, and includes a carrier or an excipient that is acceptable for veterinary use as well as human pharmaceutical use. “A pharmaceutically acceptable carrier / excipient” as used in the specification and claims includes both one and more than one such excipient.

[0086] “Optional” or “optionally” means that the subsequently described event or circumstance may but need not occur, and that the description includes instances where the event or circumstance occurs and instances in which it does not.

[0087] Within the scope of the present disclosure, “multiple sclerosis” or “MS” includes four clinical courses of disease, each of which might be mild, moderate, or severe: clinically isolated syndrome, relapsing remitting, secondary progressive (e.g., non-relapsing secondary progressive multiple sclerosis (“nrSPMS”)) and primary progressive (“PPMS”). Within the scope of the present disclosure, “relapsing multiple sclerosis,” “relapsing MS,” “relapsing forms of MS,” or “RMS” includes clinically isolated syndrome (“CIS”), relapsing remitting multiple sclerosis (“RRMS”), and relapsing secondary progressive multiple sclerosis (“R- SPMS”). RRMS refers to a disease state where patients experience clearly defined relapses (also called flare-ups or exacerbations), which are episodes of new or worsening symptoms (i.e., worsening neurologic function), followed by periods of partial or complete recoveryAttorney Docket No. 01183-0339-00PCT-PRN(remissions). nrSPMS refers to a disease state in which the patient has stopped experiencing confirmed relapses but continues to experience accumulation of disability, experienced as various symptoms such as gait impairment, fatigue, cognition impairment, balance difficulties, loss of bowel and / or bladder function, sexual disfunction, amongst others. nrSPMS includes “non-active SPMS” in which the patient has stopped experiencing confirmed relapses and inflammatory activity as detected by MRI (e.g., Gd-enhancing T1 -hyperintense lesions). PPMS refers to a disease state in which the patient experiences accumulation of disability, independent of relapses, since the onset of the disease clinical manifestation, but it likely does not have pathophysiologically distinct features from relapsing forms of MS that have entered a progressive course (SPMS).

[0088] “Expanded disability status scale (EDSS) score” is a method of quantifying disability in multiple sclerosis and monitoring changes in the level of disability over time. The EDSS scale ranges from 0 to 10 in 0.5 unit increments that represent higher levels of disability. EDSS steps 1.0 to 4.5 refer to people with MS who are able to walk without any aid and is based on measures of impairment in eight functional systems (FS): pyramidal - muscle weakness or difficulty moving limbs; cerebellar - ataxia, loss of balance, coordination or tremor; brainstem - problems with speech, swallowing and nystagmus; sensory - numbness or loss of sensations; bowel and bladder function; visual function - problems with sight; cerebral functions - problems with thinking and memory. EDSS steps 5.0 to 9.5 are defined by the impairment to walking. See, e.g., FIG. 8. Information about this score is found at Kurtzke et al. Neurology 1983, 33, 1444-1452.

[0089] As used herein, “disability accumulation” or “disability accrual” refer to the change in disability in patients with multiple sclerosis. It includes both the concepts of “disability worsening,” which refers to the typically stepwise increase in disability in patients with relapsing forms of MS, and “disability progression,” which refers to the typically more continuous increase in disability in patients with progressive forms of MS (e.g., nrSPMS, PPMS). A patient’s disability accumulation or accrual may also be impacted by “disability improvement,” which refers to a decrease in disability, should it occur, e.g., in response to a therapy. Disability accumulation (or accrual) that is associated with incomplete recovery after relapse is referred to as “relapse-associated worsening” or “RAW,” and typically occurs in patients with RMS. Disability accumulation (or accrual) that is not associated with relapse is referred to as “disability progression independent of relapse activity,” “progression independent of relapse activity,” or “PIRA.” See, e.g., Kappos, et al., JAMA Neurology 2020; 77: 1-9; Ciccarelli, et al., Neurology 2024;103:e209444.Attorney Docket No. 01183-0339-00PCT-PRN

[0090] As used herein, “confirmed disability accumulation,” “confirmed disability accrual,” or “CDA” refer to measurements such as confirmed disability progression (CDP), confirmed disability improvement (CDI), and confirmed disability worsening (CDW), which are used to assess disability change in patients. CDA may be assessed by a single metric such as progression or worsening in an EDSS score, or may be assessed as a composite metric of progression or worsening in one or more of multiple metrics such as an EDSS score, timed 25- foot walk (T25-FW) test, and 9-hole peg test (9-HPT). When assessed as a composite, CDA may be referred to as “composite Confirmed Disability Accumulation,” “composite Confirmed Disability Accrual,” or “cCDA.”

[0091] As used herein “administering” means providing an agent (e.g., active ingredient) or a composition containing the agent to a subject in a manner that results in the agent being inside the subject’s body, or prescribing, instructing, managing, or supervising another, including the subject, to so provide said agent or composition.

[0092] As used herein, “treating” or “treatment” of a disease includes (1) inhibiting the disease, e.g., arresting, reducing, or slowing the development of the disease or its clinical symptoms; and / or (2) relieving the disease, e.g., causing regression of the disease or its clinical symptoms.”

[0093] Within the scope of the present disclosure, treatment may refer to arresting, reducing, or slowing disability accumulation (e.g., disability progression or worsening) or causing disability improvement.

[0094] For example, treatment may refer to reducing the risk of an increase in disability accumulation (e.g., disability progression or disability worsening) or to improving the chance of a decrease in disability (e.g., disability improvement). “Reducing the risk” refers to decreasing the likelihood of an increase in disability or occurrence of a disability event, which may be assessed by a particular measure such as confirmed disability accumulation (CDA), confirmed disability progression (CDP), confirmed disability worsening (CDW), sustained increase in 25-foot-walk (T25-FW), or sustained increase in 9-hole peg test (9-HPT). “Improving the chance” refers to increasing the likelihood of a decrease in disability or occurrence of a (beneficial) disability event, which may be assessed by a particular measure such as confirmed disability improvement (CDI). A risk reduction (or improvement in chance) may be statistically quantified as a hazard ratio comparing the rate of occurrence of the outcome with treatment (e.g., tolebrutinib) versus the rate of occurrence of the outcome with no treatment (e.g., placebo) or treatment with a comparator (e.g., teriflunomide). For example, a risk reduction of about 30% may correspond to a hazard ratio of about 0.70 for tolebrutinibAttorney Docket No. 01183-0339-00PCT-PRN versus placebo or a comparator. As another example, an improvement in chance of about 90% may correspond to a hazard ratio of about 1.9 for tolebrutinib versus placebo or another comparator.

[0095] As another example, treatment may refer to improving the time to onset of an increase in disability accumulation (e.g., disability progression or disability worsening), wherein improving means lengthening the time to onset, i.e., slowing disability accumulation, or to improving the time to onset of a decrease in disability (e.g., disability improvement), wherein improving means shortening the time to onset. Improvements may be assessed by a particular measure for the onset of an event such as confirmed disability accumulation (CDA), confirmed disability progression (CDP), confirmed disability worsening (CDW), sustained increase in 25-foot-walk (T25-FW), or sustained increase in 9-hole peg test (9-HPT), confirmed disability improvement (CDI).

[0096] As used herein, “placebo” refers to a composition which contains no active ingredient, for example, no tolebrutinib. A placebo may be administered in a clinical trial to patients in a control group for comparison with patients receiving a composition which contains the active ingredient, for example, tolebrutinib. As will be understood by the skilled artisan, an effect observed for tolebrutinib versus placebo is likely to also be observed for tolebrutinib versus no treatment, with the possibility that placebo or nocebo effects account for differences between comparison with placebo and with no treatment.

[0097] Before describing the present teachings in detail, it is to be understood that the disclosure is not limited to specific compositions or process steps, as such may vary.

[0098] It should be noted that, as used in this specification and the appended claims, the singular form “a”, “an” and “the” include plural references unless the context clearly dictates otherwise. Thus, for example, reference to “a conjugate” includes a plurality of conjugates and reference to “a cell” includes a plurality of cells and the like.

[0099] Numeric ranges are inclusive of the numbers defining the range, e.g., a range of “between 1.0 and 2.0” or “from 1.0 to 2.0” are equivalent and include the endpoints “1.0” and “2.0”. Measured and measurable values are understood to be approximate, taking into account significant digits and the error associated with the measurement. Also, the use of “comprise”, “comprises”, “comprising”, “contain”, “contains”, “containing”, “include”, “includes”, and “including” are not intended to be limiting. It is to be understood that both the foregoing general description and detailed description are exemplary and explanatory only and are not restrictive of the teachings.Attorney Docket No. 01183-0339-00PCT-PRN

[0100] Unless specifically noted in the above specification, embodiments in the specification that recite “comprising” various components are also contemplated as “consisting of” or “consisting essentially of” the recited components; embodiments in the specification that recite “consisting of’ various components are also contemplated as “comprising” or “consisting essentially of’ the recited components; and embodiments in the specification that recite “consisting essentially of’ various components are also contemplated as “consisting of’ or “comprising” the recited components (this interchangeability does not apply to the use of these terms in the claims.)

[0101] The terms “or a combination thereof’ and “or combinations thereof’ as used herein refers to any and all permutations and combinations of the listed terms preceding the term. For example, “A, B, C, or combinations thereof’ is intended to include at least one of: A, B, C, AB, AC, BC, or ABC, and if order is important in a particular context, also BA, CA, CB, ACB, CBA, BCA, BAC, or CAB. Continuing with this example, expressly included are combinations that contain repeats of one or more item or term, such as BB, AAA, AAB, BBC, AAABCCCC, CBBAAA, CAB ABB, and so forth. The skilled artisan will understand that typically there is no limit on the number of items or terms in any combination, unless otherwise apparent from the context.

[0102] “Or” is used in the inclusive sense, i.e., equivalent to “and / or,” unless the context requires otherwise.

[0103] “Ceasing” or “cessation” when used regarding administration of a BTK inhibitor compound means that the BTK inhibitor compound is no longer being administered to the patient on either a temporary or permanent basis.

[0104] “Monitoring” with reference to assessment of the level of ALT in a patient means checking, and / or detecting the level of ALT in a patient over at least two points in time; in some embodiments, over a period of time; in some embodiments, monthly; in some embodiments, at least monthly; in some embodiments, weekly; in some embodiments, at least weekly; in some embodiments, every 5 days; in some embodiments, every 3 days; in some embodiments, every 2 to 3 days; in some embodiments, every 2 days; in some embodiments, daily.II. Administered BTK Inhibitor Compound

[0105] In some embodiments, the BTK inhibitor compound (tolebrutinib), (R)-l-(l- acryloylpiperidin-3-yl)-4- amino-3-(4-phenoxyphenyl)-lH-imidazo[4,5-c]pyridin-2(3H)-one is administered for treating MS in a patient in need thereof. In some embodiments, the BTKAttorney Docket No. 01183-0339-00PCT-PRN inhibitor compound is a pharmaceutically acceptable salt of (R)-l-(l-acryloylpiperidin-3-yl)- 4-amino-3-(4-phenoxyphenyl)- lH-imidazo[4,5-c]pyridin-2(3H)-one. In some embodiments, a therapeutically effective amount of the BTK inhibitor compound is administered. In some embodiments, a dose of 5 to 60 mg of the BTK inhibitor compound, measured in base form, is administered. In some embodiments, a dose of 60 mg of the BTK inhibitor compound, measured in base form, is administered. In some embodiments, a dose of 60 mg once daily of the BTK inhibitor compound, measured in base form, is administered.

[0106] In some embodiments, a therapeutically effective amount of tolebrutinib is provided for use in a method for treating nrSPMS in a patient in need thereof.

[0107] The BTK inhibitor compound can be prepared according to the methods and schemes described in, e.g., U.S. Patent No. 9,688,676 B2, in particular the content of column 62, line 8 to column 65 line 32, and column 67, line 28 to column 69, which is incorporated herein by reference.

[0108] The following preparation of the compound of (R)-l-(l-acryloylpiperidin-3-yl)-4- amino-3-(4-phenoxyphenyl)-lH-imidazo[4,5-c]pyridin-2(3H)-one, is given to enable those skilled in the art to prepare the BTK inhibitor compound. The synthetic route should not be considered as limiting the scope of the disclosure, but merely as being illustrative and representative thereof.

[0109] Exemplary synthesis of (R)-l-(l-acryloylpiperidin-3-yl)-4-amino-3-(4- phenoxyphenyl)-lH-imidazo[4,5-c]pyridin-2(3H)-one:

[0110] Into a lOOmL round-bottom flask was placed (R)-4-amino-3-(4-phenoxyphenyl)-l- (piperidin-3-yl)-lH-imidazo[4,5-c]pyridin-2(3H)-one (150 mg, 0.37 mmol, 1.00 equiv), DCM- CH3OH (6 mL), TEA (113 mg, 1.12 mmol, 3.00 equiv). This was followed by the addition of prop- 2-enoyl chloride (40.1 mg, 0.44 mmol, 1.20 equiv) dropwise with stirring at 0°C in 5Attorney Docket No. 01183-0339-00PCT-PRN min. The resulting solution was stirred for 2h at 0°C. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with dichloromethane / methanol (30: 1). The crude product (100 mg) was purified by Prep-HPLC under the following conditions (Column, XB ridge Prep Cl 8 OBD Column, 5pm, 19* 150mm; mobile phase, water with 0.05%TFA and ACN (25.0% ACN up to 45.0% in 8 min). 54.5 mg product of (R)-l-(l-acryloylpiperidin-3-yl)-4-amino-3-(4- phenoxyphenyl)-lH-imidazo[4,5- c]pyridin-2(3H)-one was obtained as a white solid. LC-MS m / z: 465.2 (M+l).

[0111] The BTK inhibitor compound can also be prepared according to the methods and schemes described in, for example, W02022 / 0121670. In addition, it can be prepared as described in WO2022 / 257845. Further, the BTK inhibitor compound can be prepared as described in WO2023 / 122072.

[0112] In some embodiments, provided herein is a solid form of the BTK inhibitor, or a salt thereof. In some embodiments, provided is a solid form of the salt of the BTK inhibitor. In some embodiments, provided herein is a solid form of the BTK inhibitor. In some embodiments, provided is an amorphous form of the BTK inhibitor, or a salt thereof. In some embodiments, provided is an amorphous form of the salt of the BTK inhibitor. In some embodiments, provided is an amorphous form of the BTK inhibitor. In some embodiments, provided is a crystalline form of the BTK inhibitor, or a salt thereof. In some embodiments, provided is a crystalline form of the salt of the BTK inhibitor. In some embodiments, provided is a crystalline form of the BTK inhibitor.

[0113] In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or two or three characteristic peaks at 2theta values of 7.7°±0.2°, 11.0°±0.2° and 22.8°±0.2° using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or two or three characteristic peaks at 2theta values of 12.0°±0.2°, 16.1°±0.2° and 18.5°±0.2° using CuKa radiation. In at least one embodiment, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises characteristic peaks at 2theta values of 7.7°±0.2°, 11.0°±0.2°, 22.8°±0.2°, 12.0°±0.2°, 16.1°±0.2°, and 18.5°±0.2° using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or two or three characteristic peaks at 2theta values of 713.6°±0.2°, 20.1°±0.2° and 24.8°±0.2° using CuKa radiation.

[0114] In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X- ray powder diffraction pattern comprises one or two or three characteristic peaks at 2thetaAttorney Docket No. 01183-0339-00PCT-PRN values of 4.1°±0.2°, 10.2°±0.2° and 22.6°±0.2° using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or two or three characteristic peaks at 2theta values of 11.3°±0.2°, 16.5°±0.2° and 17.8°±0.2° using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or two or three characteristic peaks at 2theta values of 8.2°±0.2°, 10.8°±0.2° and 24.7°±0.2° using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X- ray powder diffraction pattern comprises one or two or three or four or five or six or seven or eight or nine or ten characteristic peaks at 2theta values of 4.1°±0.2°, 10.2°±0.2°, 22.6°±0.2°, 11.3°±0.2°, 16.5°±0.2°, 17.8°±0.2°, 8.2°±0.2°, 10.8°±0.2°, 24.7°±0.2° and 20.5°±0.2° using CuKa radiation.

[0115] In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X- ray powder diffraction pattern comprises one or more characteristic peaks at 2theta values at about 7.66°20, 7.86°20, 1O.O3°20, 1O.51°20, 1O.97°20, 11.99°20, 13.19°20, 13.59°20 and 13.96°20 using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib, wherein an X-ray powder diffraction pattern comprises one or more characteristic peaks at 2theta values at about 4.15°20, 1O.22°20, 1O.41°20, l l.O3°20, 14.41°20, 14.85°20, 15.63°20, 16.55°20 and 17.73°20 using CuKa radiation.

[0116] In some embodiments, provided is a crystalline form of tolebrutinib- HC1 salt, wherein an X-ray powder diffraction pattern comprises one or more characteristic peaks at 2theta values at about 6.3O9°20, 9.48O°20, 1O.933°20, 12.261 °20, 12.647°20, 14.482°20, 14.918°20, 16.253°20 and 16.425°20 using CuKa radiation. In some embodiments, provided is a crystalline form of tolebrutinib- HC1 salt, wherein an X-ray powder diffraction pattern comprises one or more characteristic peaks at 2theta values at about 8.OO°20, 10.11°20,I I.98°20, 13.33°20, 14.4O°20, 14.92°20, 15.66°20, 16.O5°20, 16.72°20, and 17.28°20 using CuKa radiation.

[0117] In some embodiments, the tolebrutinib, pharmaceutically acceptable salt thereof, or crystalline form thereof is provided as a pharmaceutical composition in association with at least one pharmaceutically acceptable excipient.III. Therapeutic Methods

[0118] Provided herein are methods of reducing disability accumulation independent of relapse activity in a patient with MS in need thereof comprising administering to the patient inAttorney Docket No. 01183-0339-00PCT-PRN need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0119] In some embodiments, provided herein are methods useful for treating patients having non-relapsing secondary progressive multiple sclerosis (nrSPMS) by administration of tolebrutinib or pharmaceutically acceptable salt thereof.

[0120] In an embodiment, provided herein are methods of treating a patient with nrSPMS, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. However, in some embodiments, the administration of the compound will only occur when certain patient outcomes are met.

[0121] In one embodiment, the outcome is the patient’s risk of confirmed disability progression (CDP) is reduced. In at least one embodiment, the risk is reduced is relative to placebo. In at least one embodiment, the risk is reduced is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31% for tolebrutinib versus placebo, hi at least one embodiment, the risk of 3- month CDP is reduced about 24% for tolebrutinib versus placebo. In one embodiment, the outcome is the patient’s total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced. In at least one embodiment, the annualized rate is reduced relative to placebo. In at least one embodiment, the annualized rate is reduced relative to no treatment. In some embodiments, the annualized rate is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the annualized rate is reduced about 38% for tolebrutinib versus placebo. In one embodiment, the outcome is the patient’s risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months is reduced. In at least one embodiment, the risk reduction is relative to placebo. In at least one embodiment, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of sustained 20% increase in T25-FW test confirmed over 3 months is reduced about 23% for tolebrutinib versus placebo. In one embodiment, the outcome is the patient’ s chance of confirmed disability improvement (CDI) is improved. In at least one embodiment, the chance is improved relative to placebo. In at least one embodiment, the chance is improved relative to treatment. In some embodiments, the chance is improved about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%,Attorney Docket No. 01183-0339-00PCT-PRN90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the chance of 6- month CDI is improved about 88% for tolebrutinib versus placebo.

[0122] Provided herein are methods of treating a patient with nrSPMS in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) is reduced. In one embodiment, the patient’s CDP is measured over at least three months, such as at least six months. In some embodiments, the CDP is measured over at least one month, at least two months, at least three months, at least four months, at least five months, at least six months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In at least one embodiment, the risk is reduced is relative to placebo. In at least one embodiment, the risk is reduced is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31% for tolebrutinib versus placebo. In at least one embodiment, the risk of 3-month CDP is reduced about 24% for tolebrutinib versus placebo.

[0123] In one embodiment, the patient’s CDP increases at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0. In one embodiment, the patient’s CDP in increases at least 0.5 points when the baseline EDSS score is greater than 5.0.

[0124] In one embodiment, the patient with nrSPMS has a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5. In one embodiment, the patient with nrSPMS has no clinical relapse in the previous 24 months. In one embodiment, the patient with nrSPMS has disability accumulation in the previous 12 months. In one embodiment, the patient has a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5, no clinical relapse in the previous 24 months, and has disability accumulation in the previous 12 months.

[0125] Also provided herein are methods of reducing the risk of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0126] In one embodiment, the patient’s CDP is measured over at least three months, such as at least six months. In some embodiments, the CDP is measured over at least one month, at least two months, at least three months, at least four months, at least five months, at least sixAttorney Docket No. 01183-0339-00PCT-PRN months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In one embodiment, the confirmed disability progression (CDP) comprises: increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In one embodiment, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In at least one embodiment, the risk reduction is relative to placebo. In at least one embodiment, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31 % for tolebrutinib versus placebo. In at least one embodiment, the risk of 3-month CDP is reduced about 24% for tolebrutinib versus placebo.

[0127] Also provided herein is a method of reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, reducing comprises reducing the annualized rate of new and / or enlarging T2 -hyperintense lesions. In one embodiment, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In one embodiment, the annualized rate of new and / or enlarging T2-hyperintense lesions is less than 2. In one embodiment, the annualized rate of new and / or enlarging T2 -hyperintense lesions is about 1.8. In at least one embodiment, the annualized rate is reduced relative to placebo. In at least one embodiment, the annualized rate is reduced relative to no treatment. In some embodiments, the annualized rate is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the annualized rate is reduced about 38% for tolebrutinib versus placebo.

[0128] Provided herein is a method of reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with nonrelapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, the T25-FW test is confirmedAttorney Docket No. 01183-0339-00PCT-PRN over at least at least four months, at least five months, at least six months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In one embodiment, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In at least one embodiment, the risk reduction is relative to placebo. In at least one embodiment, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of of sustained 20% increase in the T25-FW test confirmed over at least 3 months reduced about 23% for tolebrutinib versus placebo.

[0129] Also provided herein is a method of improving the chance of confirmed disability improvement (CDI), in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, the patient’s CDI is measured over at least three months, such as at least six months. In some embodiments, the CDI is measured over at least one month, at least two months, at least three months, at least four months, at least five months, at least six months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In at least one embodiment, the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). In some embodiments, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In at least one embodiment, the chance is improved relative to placebo. In at least one embodiment, the chance is improved relative to no treatment. In some embodiments, the chance is improved about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the chance of 6-month CDI is improved about 88% for tolebrutinib versus placebo.

[0130] Provided herein is a method of improving time to onset of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, the patient’s CDP is measured over at least three months, such as at least six months. In some embodiments, the CDP is measured over at least one month, at least twoAttorney Docket No. 01183-0339-00PCT-PRN months, at least three months, at least four months, at least five months, at least six months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In one embodiment, the confirmed disability progression (CDP) comprises: increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In some embodiments, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of 6-month CDP of about 31 % for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of 3-month CDP of about 24% for tolebrutinib versus placebo.

[0131] Further provided herein is a method of improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of sustained 20% increase in the T25-FW test confirmed over at least 3 months about 23% for tolebrutinib versus placebo.

[0132] Provided herein is a method of improving time to onset of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In one embodiment, the patient’s CDI is measured over at least three months, such as at least six months. In some embodiments, the CDI is measured over at least one month, at least twoAttorney Docket No. 01183-0339-00PCT-PRN months, at least three months, at least four months, at least five months, at least six months, at least seven months, at least eight months, at least nine months, at least ten months, at least eleven months, or at least a year. In at least one embodiment, the CDI comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). In some embodiments the patient with nrSPMS has: a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; no clinical relapse in the previous 24 months; and disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a shortening of time of onset by about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a shortening of time of onset of 6-month CDP of about 88% for tolebrutinib versus placebo.

[0133] Disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in certain methods disclosed herein. In some embodiments, treating a patient with nrSPMS comprises at least one of reducing the risk of confirmed disability progression (CDP); reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI; reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; and improving the chance of confirmed disability improvement (CDI).

[0134] Also disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP) in certain methods disclosed herein.

[0135] Disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI in certain methods disclosed herein.

[0136] Further disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in certain methods disclosed herein.Attorney Docket No. 01183-0339-00PCT-PRN

[0137] Still further disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves the chance of confirmed disability improvement (CDI) in certain methods disclosed herein.

[0138] Disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP) in certain methods disclosed herein.

[0139] Also disclosed herein it tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in certain methods disclosed herein.

[0140] Disclosed herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability improvement (CDI) in certain methods disclosed herein.

[0141] Disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for a patient with nrSPMS in certain methods disclosed herein. In some embodiments, treating a patient with nrSPMS comprises at least one of reducing the risk of confirmed disability progression (CDP); reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI; reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; and improving the chance of confirmed disability improvement (CDI).

[0142] Disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP), in certain methods disclosed herein.

[0143] Also disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof reduces the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, in certain methods disclosed herein.Attorney Docket No. 01183-0339-00PCT-PRN

[0144] Further disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in certain methods disclosed herein.

[0145] Still further disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof improves the chance of confirmed disability improvement (CDI), in certain methods disclosed herein.

[0146] Disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP), in certain methods disclosed herein.

[0147] Also disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in certain methods disclosed herein.

[0148] Further disclosed herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating a patient with nrSPMS, wherein the tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability improvement (CDI), in certain methods disclosed herein.

[0149] Provided herein is a method of reducing the risk of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, CDW is measured over at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ,16, 17, 18, 19, or 20 weeks. In some embodiments, CDW is measured over at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 20, 24, 28, 32, 36, or 48 months. In some embodiments, CDW is measured over about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 12 months. In some embodiments, CDW is measured over three months. In some embodiments, CDW is measured over at least three months, such as at least six months. In some embodiments, CDW is measured over six months.

[0150] In some embodiments, CDW comprises: (a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0; (b)Attorney Docket No. 01183-0339-00PCT-PRN increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or (c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, CDW comprises increasing at least 1.5 point from the baseline EDSS when the baseline score is 0. In some embodiments, CDW comprises increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5. In some embodiments, CDW comprises increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

[0151] In some embodiments, the risk reduction is relative to treatment with teriflunomide. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 6- month CDW is reduced about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 3-month CDW is reduced about 27% for tolebrutinib versus teriflunomide.

[0152] Also provided herein is a method of improving time to onset of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, CDW is measured over at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ,16, 17, 18, 19, or 20 weeks. In some embodiments, CDW is measured over at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 20, 24, 28, 32, 36, or 48 months. In some embodiments, CDW is measured over about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 12 months. In some embodiments, CDW is measured over three months. In some embodiments, CDW is measured over at least three months, such as at least six months. In some embodiments, CDW is measured over six months.

[0153] In some embodiments, CDW comprises: (a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0; (b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or (c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

[0154] In some embodiments, the improvement in time to onset of CDW is relative to treatment with teriflunomide. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the improvement is a delay in time of onset of 6- month CDW of about 29% for tolebrutinib versus teriflunomide. In at least one embodiment,Attorney Docket No. 01183-0339-00PCT-PRN improvement is a delay in time of onset of 3-month CDW of about 27% for tolebrutinib versus teriflunomide.

[0155] Also provided herein is a method of improving percent change in brain volume loss (BVL) as detected by brain MRI in a patient with relapsing forms of multiple sclerosis (RMS), comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0156] In some embodiments, the percent change BVL improvement is relative to treatment with teriflunomide. In some embodiments, the percent change BVL decreases by about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the percent change BVL decreases by about 20% for tolebrutinib versus teriflunomide.

[0157] In some embodiments, the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 prior to initial administration of tolebrutinib. In some embodiments, the patient has one or more of the following: (a) one or more documented relapses in the previous year; (b) two or more documented relapses in the previous 2 years; and (c) one or more Gd-enhancing lesions on an MRI scan in the previous year. In some embodiments, the patient has two or more of the following: (a) one or more documented relapses in the previous year; (b) two or more documented relapses in the previous 2 years; and (c) one or more Gd-enhancing lesions on an MRI scan in the previous year.

[0158] Also provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability worsening (CDW) in certain methods described herein.

[0159] Also provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability worsening (CDW) in certain methods described herein.

[0160] Also provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves percent change in brain volume loss (BVL) as detected by brain MRI in certain methods described herein.

[0161] Also provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with RMS, whereinAttorney Docket No. 01183-0339-00PCT-PRN tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability worsening (CDW), in certain methods described herein.

[0162] Also provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with RMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability worsening (CDW), in certain methods described herein.

[0163] Also provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with RMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves percent change in brain volume loss (BVL) as detected by brain MRI, in certain methods described herein.

[0164] Provided herein is a method of treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs: (a) the risk of confirmed disability progression (CDP) is reduced; (b) the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced; (c) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months is reduced; and (d) the chance of confirmed disability improvement (CDI) is improved. In some embodiments, one or more of the reduction in risk of CDP, the reduction in total number of new and / or enlarging T2-hyperintense lesions, the reduction in risk of sustained 20% increase in T25-FW test, or the improvement of chance of CDI is relative to placebo. In some embodiments, one or more of the reduction in risk of CDP, the reduction in total number of new and / or enlarging T2- hyperintense lesions, the reduction in risk of sustained 20% increase in T25-FW test, or the improvement of chance of CDI is relative to no treatment. In some embodiments, the risk of CDP is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31% for tolebrutinib versus placebo. In at least one embodiment, the risk of 3-month CDP is reduced about 24% for tolebrutinib versus placebo. In some embodiments, the annualized rate of new and / or enlarging T2-hyperintense lesions is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the annualized rate is reduced about 38% for tolebrutinib versus placebo. In some embodiments, the risk of sustained 20% increase in T25-FW test is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least oneAttorney Docket No. 01183-0339-00PCT-PRN embodiment, the risk of sustained 20% increase in T25-FW test confirmed over 3 months is reduced about 23% for tolebrutinib versus placebo. In some embodiments, the chance of CDI is improved about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the chance of 6-month CDI is improved about 88% for tolebrutinib versus placebo.

[0165] Also provided herein is a method of treating a patient with non-relapsing secondary progressive multiple sclerosis (mSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) is reduced. In some embodiments, the CDP is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability progression (CDP) comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months.

[0166] In some embodiments, provided herein is a method of reducing the risk of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDP is measured over at least three months, such as at least six months. In some embodiments, confirmed disability progression (CDP) comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31% for tolebrutinib versus placebo. In at least one embodiment, the risk of 3-month CDP is reduced about 24% for tolebrutinib versus placebo.Attorney Docket No. 01183-0339-00PCT-PRN

[0167] In some embodiments, provided herein is a method of reducing the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, in a patient with nonrelapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, reducing comprises reducing the annualized rate of new and / or enlarging T2-hyperintense lesions. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the annualized rate is reduced relative to placebo. In some embodiments, the annualized rate is reduced relative to no treatment. In some embodiments, the annualized rate is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the annualized rate is reduced about 38% for tolebrutinib versus placebo.

[0168] In some embodiments, provided herein is a method of reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the risk of sustained 20% increase in the T25-FW test confirmed over 3 months is reduced about 23% for tolebrutinib versus placebo.

[0169] In some embodiments, provided herein is a method of reducing the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation inAttorney Docket No. 01183-0339-00PCT-PRN the previous 12 months. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo.

[0170] In some embodiments, provided herein is a method of improving the chance of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDI is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the chance is improved relative to placebo. In some embodiments, the chance is improved relative to no treatment. In some embodiments, the chance is improved about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the chance of 6-month CDI is improved about 88% for tolebrutinib versus placebo.

[0171] In some embodiments, provided herein is a method of improving time to onset of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDP is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability progression (CDP) comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the improvement isAttorney Docket No. 01183-0339-00PCT-PRN a delay in time of onset of 6-month CDP of about 31 % for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of 3-month CDP of about 24% for tolebrutinib versus placebo.

[0172] In some embodiments, provided herein is a method of improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of sustained 20% increase in the T25-FW test confirmed over at least 3 months of about 23% for tolebrutinib versus placebo.

[0173] In some embodiments, provided herein is a method of improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo.

[0174] In some embodiments, provided herein is a method of improving time to onset of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDI is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). InAttorney Docket No. 01183-0339-00PCT-PRN some embodiments, the patient with nrSPMS has: (a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5; (b) no clinical relapse in the previous 24 months; and (c) disability accumulation in the previous 12 months. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a shortening of time of onset of about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a shortening of time of onset of 6-month CDP of about 88% for tolebrutinib versus placebo.

[0175] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in certain methods described herein. In some embodiments, treating a patient with nrSPMS comprises at least one of the following: reducing the risk of confirmed disability progression (CDP); reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI; reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; improving the chance of confirmed disability improvement (CDI); improving time to onset of confirmed disability progression (CDP); improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months; and improving time to onset of confirmed disability improvement (CDI).

[0176] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP) in certain methods described herein.

[0177] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI in certain methods described herein.

[0178] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in certain methods described herein.Attorney Docket No. 01183-0339-00PCT-PRN

[0179] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in certain methods described herein.

[0180] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves the chance of confirmed disability improvement (CDI) in certain methods described herein.

[0181] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP) in certain methods described herein.

[0182] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in certain methods described herein.

[0183] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in certain methods described herein.

[0184] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability improvement (CDI) in certain methods described herein.

[0185] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS in certain methods described herein. In some embodiments, treating a patient with nrSPMS comprises at least one of the following: reducing the risk of confirmedAttorney Docket No. 01183-0339-00PCT-PRN disability progression (CDP); reducing the total number of new and / or enlarging T2- hyperintense lesions as detected by MRI; reducing the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; improving the chance of confirmed disability improvement (CDI); improving time to onset of confirmed disability progression (CDP); improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months; improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months; and improving time to onset of confirmed disability improvement (CDI).

[0186] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP), in certain methods described herein.

[0187] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, in certain methods described herein.

[0188] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in certain methods described herein.

[0189] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in certain methods described herein.

[0190] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves the chance of confirmed disability improvement (CDI), in certain methods described herein.Attorney Docket No. 01183-0339-00PCT-PRN

[0191] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP), in certain methods described herein.

[0192] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in certain methods described herein.

[0193] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in certain methods described herein.

[0194] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for treating a patient with nrSPMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability improvement (CDI), in certain methods described herein.

[0195] In some embodiments, provided herein is a method of reducing the risk of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDW is measured over at least three months, such as at least six months. In some embodiments, CDW comprises: (a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0; (b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or (c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 prior to initial administration of tolebrutinib, and one or more of the following: (a) one or more documented relapses in the previous year; (b) two or more documented relapses in the previous 2 years; and (c) one or more Gd-enhancing lesions on an MRI scan in the previous year. In some embodiments, the risk reduction is relative to treatment withAttorney Docket No. 01183-0339-00PCT-PRN teriflunomide. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 6-month CDW is reduced about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 3-month CDW is reduced about 27% for tolebrutinib versus teriflunomide.

[0196] In some embodiments, provided herein is a method of improving time to onset of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDW is measured over at least three months, such as at least six months. In some embodiments, CDW comprises: (a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0; (b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or (c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 at the first visit, and one or more of the following: (a) one or more documented relapses in the previous year; (b) two or more documented relapses in the previous 2 years; and (c) one or more Gd-enhancing lesions on an MRI scan in the previous year. In some embodiments, the improvement is relative to treatment with teriflunomide. In some embodiments, the improvement is a delay in time to onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the improvement is a delay in time of onset of 6-month CDW of about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, improvement is a delay in time of onset of 3-month CDW of about 27% for tolebrutinib versus teriflunomide.

[0197] In some embodiments, provided herein is a method of improving percent change in brain volume loss (BVL) as detected by brain MRI in a patient with relapsing forms of multiple sclerosis (RMS), comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 at the first visit, and one or more of the following: (a) one or more documented relapses in the previous year; (b) two or more documented relapses in the previous 2 years; and (c) one or more Gd-enhancing lesions on an MRI scan in the previous year. In some embodiments, the percent change BVL improvement is relative to treatment with teriflunomide. In some embodiments, the percent change BVL decreases by about 5%, 10%, 15%, 20%, 25%, 30%,Attorney Docket No. 01183-0339-00PCT-PRN35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the percent change BVL decreases by about 20% for tolebrutinib versus teriflunomide.

[0198] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS) in certain methods described herein. In some embodiments, treating a patient with RMS comprises at least one of: reducing the risk of confirmed disability worsening (CDW); improving time to onset of confirmed disability worsening (CDW); and improving percent change in brain volume loss (BVL) as detected by brain MRI.

[0199] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability worsening (CDW) in certain methods described herein.

[0200] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability worsening (CDW) in certain methods described herein.

[0201] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves percent change in brain volume loss (BVL) as detected by brain MRI in certain methods described herein.

[0202] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with RMS in certain methods described herein. In some embodiments, treating a patient with RMS comprises at least one of: reducing the risk of confirmed disability worsening (CDW); improving time to onset of confirmed disability worsening (CDW); and improving percent change in brain volume loss (BVL) as detected by brain MRI.

[0203] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in reducing the risk of confirmed disability worsening (CDW), in certain methods described herein.

[0204] In some embodiments, the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with RMS, whereinAttorney Docket No. 01183-0339-00PCT-PRN tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability worsening (CDW), in certain methods described herein.

[0205] In some embodiments, the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with RMS, wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves percent change in brain volume loss (BVL) as detected by brain MRI, in certain methods described herein.

[0206] In some embodiments, provided herein is a method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs: (a) the risk of composite confirmed disability progression (cCDP) is reduced, wherein the cCDP comprises progression in at least one of confirmed disability progression (CDP), sustained 20% increase in the timed 25-foot walk (T25-FW) test), and sustained 20% increase in the 9-hole peg test (9-HPT); (b) the risk of confirmed disability progression (CDP) is reduced; (c) the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced; (d) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test is reduced; (e) the risk of sustained 20% increase in the 9-hole peg test (9-HPT) is reduced; (f) the chance of confirmed disability improvement (CDI) is improved; and (g) the percent change in brain volume loss (BVL) as detected by brain MRI is improved. In some embodiments, the CDP, cCDP, sustained 20% increase in the timed 25-foot walk (T25-FW) test, or sustained 20% increase in the 9-hole peg test (9-HPT) is measured over at least three months, such as at least six months. In some embodiments, one or more of the reduction in risk of CDP or cCDP, the reduction in total number of new and / or enlarging T2-hyperintense lesions, the reduction in risk of sustained 20% increase in T25-FW test, the reduction in risk of sustained 20% increase in the 9-hole peg test (9-HPT), the improvement of chance of CDI, or the improvement percent change in BVL is relative to placebo. In some embodiments, one or more of the reduction in risk of CDP or cCDP, the reduction in total number of new and / or enlarging T2- hyperintense lesions, the reduction in risk of sustained 20% increase in T25-FW test, the reduction in risk of sustained 20% increase in the 9-hole peg test (9-HPT), the improvement of chance of CDI, or the improvement percent change in BVL is relative to no treatment. In some embodiments, the risk of CDP or cCDP is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk of CDP or cCDP is reduced about 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% forAttorney Docket No. 01183-0339-00PCT-PRN tolebrutinib versus placebo. In some embodiments, the annualized rate of or new and / or enlarging T2-hyperintense lesions is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the annualized rate is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo. In some embodiments, the risk of sustained 20% increase in T25- FW test is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk of sustained 20% increase in T25- FW test is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo. In some embodiments, the risk of sustained 20% increase in 9- HPT is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk of sustained 20% increase in 9- HPT is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo. In some embodiments, the chance of CDI is improved about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In some embodiments, the chance of CDI is improved about 110%, 120%, 130%, 140%, 150%, 160%, 170%, 180%, 190%, or 200% for tolebrutinib versus placebo. In some embodiments, the percent change BVL decreases by about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the percent change BVL decreases by about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0207] In some embodiments, provided herein is a method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) is reduced, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25- foot walk (T25-FW) test; and (c) sustained 20% increase in the 9-hole peg test (9-HPT). In some embodiments, the CDP or cCDP is measured over at least three months, such as at least six months. In some embodiments, the CDP comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.5; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgGAttorney Docket No. 01183-0339-00PCT-PRN index. In some embodiments, the risk of CDP is reduced. In some embodiments, the risk of cCDP is reduced. In some embodiments, the risk of CDP or cCDP is reduced relative to placebo. In some embodiments, the risk of CDP or cCDP is reduced relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk of CDP or cCDP is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0208] In some embodiments, provided herein is a method of reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25-foot walk (T25-FW) test; and (c) sustained 20% increase in the 9-hole peg test (9-HPT). In some embodiments, the CDP or cCDP is measured over at least three months, such as at least six months. In some embodiments, confirmed disability progression (CDP) comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.5; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk of CDP is reduced. In some embodiments, the risk of cCDP is reduced. In some embodiments, the risk of CDP or cCDP is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk of CDP or cCDP is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0209] In some embodiments, provided herein is a method of improving time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the cCDP comprises progression in at least one of: (a) CDP; (b) sustained 20% increase in the timed 25-foot walk (T25-FW) test; and (c)Attorney Docket No. 01183-0339-00PCT-PRN sustained 20% increase in the 9-hole peg test (9-HPT). In some embodiments, the CDP or cCDP is measured over at least three months, such as at least six months. In some embodiments, the CDP comprises: (a) increasing at least 1 .0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.5; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the time to onset of CDP is improved. In some embodiments, the time to onset of cCDP is improved. In some embodiments, the improvement is a delay in time to onset of CDP or cCDP about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the improvement is a delay in time to onset of CDP or cCDP of about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0210] In some embodiments, provided herein is a method of reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, reducing comprises reducing the annualized rate of new and / or enlarging T2-hyperintense lesions. In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the annualized rate is reduced relative to placebo. In some embodiments, the annualized rate is reduced relative to no treatment. In some embodiments, the annualized rate is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the annualized rate is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0211] In some embodiments, provided herein is a method of reducing the risk of sustained20% increase in the timed 25-foot walk (T25-FW) test, in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the sustained 20% increase in the T25-FW test is measuredAttorney Docket No. 01183-0339-00PCT-PRN over at least three months, such as at least six months In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0212] In some embodiments, provided herein is a method of reducing the risk of sustained 20% increase in the 9-hole peg test (9-HPT), in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the sustained 20% increase in the 9-HPT is measured over at least three months, such as at least six months In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the risk reduction is relative to placebo. In some embodiments, the risk reduction is relative to no treatment. In some embodiments, the risk is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the risk is reduced about 55%, 60%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% for tolebrutinib versus placebo.

[0213] In some embodiments, provided herein is a method of improving the chance of confirmed disability improvement (CDI) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDI is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the chance is improved relative to placebo. In some embodiments, the chance is improved relative to no treatment. In some embodiments, the chance is improvedAttorney Docket No. 01183-0339-00PCT-PRN about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo. In some embodiments, the chance of CDI is improved about 110%, 120%, 130%, 140%, 150%, 160%, 170%, 180%, 190%, or 200% for tolebrutinib versus placebo.

[0214] In some embodiments, provided herein is a method of improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test, in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the sustained 20% increase in the T25-FW test is measured over at least three months, such as at least six months In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo.

[0215] In some embodiments, provided herein is a method of improving time to onset of sustained 20% increase in the 9-hole peg test (9-HPT), in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the sustained 20% increase in the 9-HPT is measured over at least three months, such as at least six months In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a delay in time of onset of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus placebo. In some embodiments, the improvement is a delay in time of onset of about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo.

[0216] In some embodiments, provided herein is a method of improving time to onset of confirmed disability improvement (CDI) in a patient with primary progressive multipleAttorney Docket No. 01183-0339-00PCT-PRN sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, the CDI is measured over at least three months, such as at least six months. In some embodiments, the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS). In some embodiments, the patient with PPMS has: (a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and (b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index. In some embodiments, the improvement is relative to placebo. In some embodiments, the improvement is relative to no treatment. In some embodiments, the improvement is a shortening of time of onset of about 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100% for tolebrutinib versus placebo.

[0217] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS) in certain methods described herein. In some embodiments, treating a patient with PPMS comprises at least one of: reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) and improving time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP).

[0218] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS), wherein tolebrutinib or a pharmaceutically acceptable salt reduces the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in certain methods described herein.

[0219] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS), wherein tolebrutinib or a pharmaceutically acceptable salt improves time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in certain methods described herein.

[0220] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with PPMS in certain methods described herein. In some embodiments, treating a patient with PPMS comprises at least one of: reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) and improving timeAttorney Docket No. 01183-0339-00PCT-PRN to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP).

[0221] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with PPMS, wherein tolebrutinib or a pharmaceutically acceptable salt reduces the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP), in certain methods described herein.

[0222] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for use in treating a patient with PPMS, wherein tolebrutinib or a pharmaceutically acceptable salt improves time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in certain methods described herein.

[0223] In some embodiments, provided herein is a method of treating disability accumulation in a patient with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

[0224] In some embodiments, provided herein is a method of treating disability progression independent of relapse activity in a patient with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof. In some embodiments, treating disability accumulation or disability progression independent of relapse activity comprises at least one of: (a) reducing the risk of disability accumulation in the patient in need thereof; (b) delaying disability accumulation in the patient in need thereof; or (c) improving time to onset of disability accumulation in the patient in need thereof.

[0225] In some embodiments, the reduction of risk, delay, or improvement of time to onset of disability accumulation is relative to placebo. In some embodiments, the reduction of risk, delay, or improvement of time to onset of disability accumulation is relative to no treatment. In some embodiments, the risk of disability accumulation is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutunib versus placebo. In at least one embodiment, the risk of 6-month CDP is reduced about 31% for tolebrutinib versus placebo. In at least one embodiment, the risk of 3-month CDP is reduced about 24% for tolebrutinib versus placebo. In at least one embodiment, the risk of sustained 20% increase in the T25-FW test confirmed over at least 3 months is reduced about 23% for tolebrutinib versus placebo. InAttorney Docket No. 01183-0339-00PCT-PRN some embodiments, the disability accumulation is delayed about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutunib versus placebo. In at least one embodiment, 6- month CDP is delayed by about 31% for tolebrutinib versus placebo. In at least one embodiment, 3-month CDP is delayed by about 24% for tolebrutinib versus placebo. In at least one embodiment, sustained 20% increase in the T25-FW test confirmed over at least 3 months is delayed by about 23% for tolebrutinib versus placebo. In some embodiments, the improvement in time to onset of disability accumulation is a delay of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutunib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of 6-month CDP of about 31 % for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time of onset of 3-month CDP of about 24% for tolebrutinib versus placebo. In at least one embodiment, the improvement is a delay in time ot onset of sustained 20% increase in the T25- FW test confirmed over at least 3 months of about 23% for tolebrutinib versus placebo.

[0226] In some embodiments the In some embodiments, the reduction of risk, delay, or improvement of time to onset of disability accumulation is relative to treatment with teriflunomide. In some embodiments, the risk of disability accumulation is reduced about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 6-month CDW is reduced about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, the risk of 3-month CDW is reduced about 27% for tolebrutinib versus teriflunomide. In some embodiments, the disability accumulation is delayed about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutunib versus teriflunomide. In at least one embodiment, 6-month CDW is delayed about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, 3-month CDW is delayed reduced about 27% for tolebrutinib versus teriflunomide. In some embodiments, the improvement in time to onset of disability accumulation is a delay of about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% for tolebrutunib versus teriflunomide. In at least one embodiment, the improvement is a delay in time of onset of 6-month CDW of about 29% for tolebrutinib versus teriflunomide. In at least one embodiment, improvement is a delay in time of onset of 3-month CDW of about 27% for tolebrutinib versus teriflunomide.

[0227] In some embodiments, the disability accumulation or disability progression independent of relapse activity is confirmed disability accumulation (CDA). In some embodiments, the confirmed disability accumulation (CDA) is confirmed disability progression (CDP). In some embodiments, the confirmed disability accumulation (CDA) is confirmed disability worsening (CDW). In some embodiments, the confirmed disabilityAttorney Docket No. 01183-0339-00PCT-PRN accumulation (CDA) is a composite confirmed disability accumulation (cCDA) comprising progression in one or more of: (a) CDW or CDP; (b) sustained 20% increase in the timed 25- foot walk test (T25-FW); and (c) sustained 20% increase in the 9-hole peg test (9-HPT). In some embodiments, the CDP comprises: (a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or (b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0. In some embodiments, the CDW comprises: (a) increasing at least 1.5 point from the baseline expanded disability status scale score (EDSS) when the baseline score is 0; (b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or (c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5. In some embodiments, the CDA or cCDA is measured over at least 3 months, such as at least 6 months.

[0228] In some embodiments, the patient in need thereof has secondary progressive multiple sclerosis (SPMS). In some embodiments, the SPMS is non-relapsing secondary progressive multiple sclerosis (nrSPMS). In some embodiments, the SPMS is relapsing secondary progressive multiple sclerosis (R-SPMS). In some embodiments, the patient in need thereof has a relapsing form of multiple sclerosis (RMS). In some embodiments, the patient in need thereof has primary progressive multiple sclerosis (PPMS).

[0229] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating disability accumulation in a patient with multiple sclerosis in certain methods described herein.

[0230] In some embodiments, provided herein is tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating disability progression independent of relapse activity in a patient with multiple sclerosis in certain methods described herein.

[0231] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for use in the manufacture of a medicament for use in treating disability accumulation in a patient with multiple sclerosis in certain methods described herein.

[0232] In some embodiments, provided herein is the use of tolebrutinib or a pharmaceutically acceptable salt thereof for use in the manufacture of a medicament for use in treating disability progression independent of relapse activity in a patient with multiple sclerosis in certain methods described herein.

[0233] In some embodiments, the patient in need thereof is an adult. In some embodiments, the patient is at least 18 years old. In some embodiments, the patient ranges in age from 18 toAttorney Docket No. 01183-0339-00PCT-PRN90 years old, for example, 20 to 85 years old, 25 to 80 years old, 30 to 75 years old, 35 to 70 years old, 40 to 65 years old, 45 to 60 years old or 50 to 55 years old.

[0234] In some embodiments, the therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof is about 5 mg to about 60 mg, measured in base form.

[0235] In some embodiments, the therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof is 60 mg, measured in base form.

[0236] For certain of the methods disclosed herein, the observed benefit (e.g., treatment effect) may be greater in patients in a first subgroup compared to patients in one or more second subgroups of patients or to patients not in the first subgroup.

[0237] In certain methods disclosed herein, wherein tolebrutinib is administered to a patient in need thereof having non-relapsing secondary progressive multiple sclerosis (nrSPMS), the treatment effect (e.g., improved time to onset of 6-month confirmed disability progression (CDP)) is greater in a first subgroup of patients than in patients not in the first subgroup.

[0238] In some embodiments, the patient in need thereof has one or more Gd-enhancing T1 -hyperin tense lesions as detected by MR1 before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 65% for the patient having one or more Gd-enhancing T1 -hyperintense lesions compared to about 22% for a patient not having a Gd-enhancing T1 -hyperintense lesion before administration of tolebrutinib, wherein the improvements are relative to placebo.

[0239] In some embodiments, the patient in need thereof having non-relapsing SPMS has non-active SPMS. In some embodiments, the patient in need therof with non-active SPMS has no Gd-enhancing T1 -hyperintense lesions as detected by MRI before administration of tolebrutinib, and had no relapse in the 2 years before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 23% for the patient having no Gd-enhancing T1 -hyperintense lesions as detected by MRI before administration of tolebrutinib, and having no relapse in the 2 years before administration of tolebrutinib, wherein the improvement is relative to placebo.

[0240] In some embodiments, the patient in need thereof has an EDSS score of 4.5 or less before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 40% for the patient having an EDSS score of 4.5 or less compared to 28% for a patient having an EDSS score greater than 4.5 before administration of tolebrutinib, wherein the improvements are relative to placebo.Attorney Docket No. 01183-0339-00PCT-PRN

[0241] In some embodiments, the patient in need thereof has an EDSS score of 5.5 or less before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 43% for the patient having an EDSS score of 5.5 or less compared to 20% for a patient having an EDSS score greater than 5.5 before administration of tolebrutinib, wherein the improvements are relative to placebo.

[0242] In some embodiments, the patient in need thereof has received one or fewer disease modifying therapies before administration of tolebrutinib. In some embodiments, the patient in need thereof has not received a disease modifying therapy before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 61% for the patient who has not received a disease modifying therapy compared to about 35% for the patient having received one disease modifying therapy and compared to about 10% for a patient having received two or more disease modifying therapies before administration of tolebrutinib, wherein the improvements are relative to placebo. In some embodiments, the patient in need thereof has received one prior disease modifying therapy. In some embodiments, the one prior disease modifying therapy is selected from the group consisting of an interferon, glatiramer acetate, dimethyl fumarate, ocrelizumab, teriflunomide, natalizumab, fingolimod, and rituximab.

[0243] In some embodiments, the patient in need thereof had onset of RMS symptoms less than 10 years before administration of tolebrutinib. In some embodiments, the patient in need thereof had onset of RMS symptoms more than 5 years and 10 years or less before administration of tolebrutinib. In some embodiments, the patient in need thereof had onset of RMS symptoms 5 years or less before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 49% for the patient having onset of RMS symptoms 5 years or less or about 46% for the patient having onset of RMS symptoms more than 5 years and 10 years or less compared to about 26% for a patient having onset of RMS symptoms more than 10 years before administration of tolebrutinib, wherein the improvements are relative to placebo.

[0244] In some embodiments, the patient in need thereof had one or more phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the patient in need thereof had one, two, or three phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the patient in need thereof has four or more phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDP is improved about 54% for the patient having four or more PRL compared to about 15% for the patient having one, two, or three PRLsAttorney Docket No. 01183-0339-00PCT-PRN and compared to about -17% for a patient having no PRL before administration of tolebrutinib, wherein the improvements are relative to placebo.

[0245] In certain methods disclosed herein, wherein tolebrutinib is administered to a patient in need thereof having a relapsing form of multiple sclerosis (RMS), the treatment effect (e.g., improved time to onset of 6-month confirmed disability progression (CDW)) is greater in a first subgroup of patients than in patients not in the first subgroup.

[0246] In some embodiments, the patient in need thereof has an EDSS score of less than 4 before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 33% for the patient having an EDSS score of less than 4 compared to about -4% for a patient having an EDSS score of 4 or more before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.

[0247] In some embodiments, the patient in need thereof has one or more Gd-enhancing T1 -hyperin tense lesions as detected by MRI before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 39% for the patient having one or more Gd-enhancing T1 -hyperintense lesions compared to about 24% for a patient not having a Gd-enhancing T1 -hyperintense lesion before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.

[0248] In some embodiments, the patient in need thereof has not received a disease modifying therapy before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 46% for the patient who has not received a disease modifying therapy compared to about -5% for a patient having received one disease modifying therapy before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.

[0249] In some embodiments, the patient in need thereof experienced onset of RMS symptoms less than 10 years before administration of tolebrutinib. In some embodiments, the patient in need thereof experienced onset of RMS symptoms less than 5 years before administration of tolebrutinib. In some embodiments, the patient in need thereof experienced onset of RMS symptoms 5 or more years and less than 10 years before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 44% for the patient having onset of RMS symptoms less than 5 years or about 44% for the patient having onset of RMS symptoms 5 or more years and less than 10 years compared to about - 10% for a patient having onset of RMS symptoms 10 years or more before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.Attorney Docket No. 01183-0339-00PCT-PRN

[0250] In some embodiments, the patient in need thereof had 2 or more relapses in the one year before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 51 % for the patient having 2 or more relapses in the one year before administration of tolebrutinib compared to about 22% for a patient having less than 2 relapses in the one year before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.

[0251] In some embodiments, the patient in need thereof had one or more phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the patient in need thereof had one, two, or three phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the patient in need thereof has four or more phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib. In some embodiments, the time to onset of 6-month CDW is improved about 49% for the patient having four or more PRL or about 46% for the patient having one, two, or three PRLs compared to about 18% for a patient having no PRL before administration of tolebrutinib, wherein the improvements are relative to teriflunomide.IV. Therapeutic Methods to Mitigate Risk of Hepatic Injury

[0252] Provided herein are methods of treating MS comprising administering to a patient in need thereof a therapeutically effective amount of (R)-l-(l-acryloylpiperidin-3-yl)-4- amino-3-(4-phenoxyphenyl)-lH-imidazo[4,5-c]pyridin-2(3H)-one, a pharmaceutically acceptable salt thereof, or a crystalline form thereof. However, in some embodiments, the administration of the compound will (in certain embodiments) only occur if certain preconditions are met.

[0253] In one embodiment, the patient’ s levels of transferrin or ferritin are measured. If it is found that the patient’s levels of transferrin or ferritin are not elevated, then the patient will receive tolebrutinib. However, if is found that the patient’s transferrin or ferritin are elevated, the patient will not receive the compound. Elevated transferrin levels are determined by examining the saturation level of transferrin. Particularly an elevated transferrin level is where the patient’s transferrin saturation level is >50% in males and >40% in females. Stated differently, if the patient’s transferrin saturation level is >50% in males and >40% in females, the patient will not receive tolebrutinib, whereas if the patient’ s transferrin saturation level is measured and it is found that the saturation is less than or equal to 50% in males or less than or equal to 40% in females, then the patient can receive study drug.Attorney Docket No. 01183-0339-00PCT-PRN

[0254] In some embodiments, the patient’s ferritin levels are measured. If it is found that the patient’s levels of ferritin are not elevated, then the patient will receive tolebrutinib. Elevated ferritin levels means a level of >500 pg / L. In some embodiments, the patient’s level of ferritin is measured, and if it is found to be higher than 500 pg / L, the patient is not administered the BTK compound. But if it is found to be less than or equal to 500 pg / L, then the patient will receive the BTK compound.

[0255] In some embodiments, the patient’s iron panel will be measured, which includes both iron levels in blood and serum, ferritin levels and transferrin saturation. If either the ferritin level or the transferrin level is above the thresholds listed above, the patient will not receive the BTK inhibitor. But if both the ferritin level and the transferrin level are below the thresholds listed above, the patient will receive the BTK inhibitor.

[0256] In some embodiments, there are methods of treating MS comprising determining the patient’s alcohol consumption, and when the patient is found to have a suitable alcohol consumption, administering to a patient in need thereof a therapeutically effective amount of a BTK inhibitor comprising (R)-l-(l-acryloylpiperidin-3-yl)-4-amino-3-(4-phenoxyphenyl)- lH-imidazo|4,5-c]pyridin-2(3H)-one. In some embodiments, suitable alcohol consumption means that patient does not have an active alcohol use disorder or a history of alcohol or drug abuse within 1 year prior to the first visit. In other embodiments, suitable alcohol consumption means that the patient has a current alcohol intake of >2 drinks per day for men and >1 drink per day for women (1 drink = approximately 14 grams of alcohol = 350 mL beer = 140 mL wine = 40 mL of spirits). Thus, the patient needs to have an alcohol consumption less than 2 drinks / day for men and 1 drink / day for women in order for the BTK compound to be administered.

[0257] In some embodiments, there are methods for treating MS in which it is measured whether the patient is concomitantly taking inducers of the CYP3A enzyme. If the patient has taken such an inhibitor, the patient will not receive the BTK compound. Likewise, the patient will not be given the BTK compound if patient is concomitantly taking an inhibitor of CYP3C8.

[0258] In some embodiments, it will be determined if the patient has elevated ALT enzymes, and if so, the patient will not receive the BTK inhibitor. This refers to the alanine aminotransferase (ALT) enzyme that has been increased and / or has a starting value that is >3 x upper limit of normal (ULN). Such patients will not receive the BTK compound.

[0259] In one embodiment, the patient’ s levels of transferrin or ferritin are measured. If it is found that the patient’s levels of transferrin or ferritin are not elevated, then the patient will continue to receive tolebrutinib. However, if is found that the patient’s transferrin or ferritinAttorney Docket No. 01183-0339-00PCT-PRN are elevated, the patient discontinues receiving the compound (or the compound is no longer administered to the patient). Specifically, in some embodiments if the patient’s transferrin saturation level is >50% in males and >40% in females, the patient will discontinue receiving the compound.

[0260] In some embodiments, the patient’s ferritin levels are measured. If it is found that the patient’s levels of ferritin are not elevated, then the patient will continue to receive tolebrutinib. However, if is found that the patient’s ferritin is elevated, the patient discontinues receiving the compound (or the compound is no longer administered to the patient). Specifically, the patient’s level of ferritin is measured, and if it is found to be higher than >500 pg / L, the patient is not administered the BTK compound and / or the patient stops receiving the compound. But if it is found to be less than or equal to 500 pg / L, then the patient will continue to receive the BTK compound.

[0261] In some embodiments, the patient’s iron panel will be measured, which includes both iron levels in blood and serum, ferritin levels and transferrin saturation. If either the ferritin level or the transferrin level is above the thresholds listed above, the patient will not receive the BTK inhibitor or will stop receiving the compound. If both the ferritin level or the transferrin level is above the thresholds listed above, the patient will also not receive the BTK inhibitor or will stop receiving the compound.

[0262] In some embodiments, there are methods of treating MS comprising determining the patient’s alcohol consumption, and when the patient is found to have a suitable alcohol consumption, administering to a patient in need thereof a therapeutically effective amount of a BTK inhibitor comprising (R)-l-(l-acryloylpiperidin-3-yl)-4-amino-3-(4-phenoxyphenyl)- lH-imidazo[4,5-c]pyridin-2(3H)-one. In some embodiments, suitable alcohol consumption means that patient does not have an active alcohol use disorder or a history of alcohol or drug abuse within 1 year prior to the first visit. In other embodiments, suitable alcohol consumption means that the patient has a current alcohol intake of >2 drinks per day for men and >1 drink per day for women (1 drink = approximately 14 grams of alcohol = 350 mL beer = 140 mL wine = 40 mL of spirits). Thus, the patient needs to have an alcohol consumption less than 2 drinks / day for men and 1 drink / day for women in order for the BTK compound to be administered.

[0263] In some embodiments, there are methods of treating MS comprising determining the patient’s alcohol consumption, and when the patient is found to have a higher than suitable alcohol consumption, the patient is not administered tolebrutinib or the administration of the compound is discontinued. In some embodiments, higher than suitable alcohol consumptionAttorney Docket No. 01183-0339-00PCT-PRN means that patient has an active alcohol use disorder or a history of alcohol or drug abuse within 1 year prior to the first visit. In other embodiments, higher than suitable alcohol consumption means that the patient has a current alcohol intake of >2 drinks per day for men and > 1 drink per day for women (1 drink = approximately 14 grams of alcohol = 350 mL beer = 140 mL wine = 40 mL of spirits). Thus, the patient needs to have an alcohol consumption less than 2 drinks / day for men and 1 drink / day for women in order for tolebrutinib to be administered or for the patient to continue to receive tolebrutinib.

[0264] In some embodiments, there are methods for treating MS in which it is measured whether the patient is concomitantly taking inducers of the CYP3A enzyme. If the patient has taken such an inhibitor, the patient will not receive tolebrutinib and / or the administration of the compound will be discontinued. Likewise, the patient will not be given tolebrutinib (or the administration of the compound will be discontinued) if patient is concomitantly taking an inhibitor of CYP3C8.

[0265] In some embodiments, it will be determined if the patient has elevated ALT enzymes, and if so, the patient will not receive tolebrutinib or will discontinue receiving the compound. This refers to the alanine aminotransferase (ALT) enzyme that has been increased and / or has a starting value that is >3 x upper limit of normal (ULN). Such patients will not receive tolebrutinib or the administration of the compound will cease.

[0266] In one embodiment, the patient will be classified as having mild, moderate or severe hepatic impairment as measured by the Child-Pugh class scale. In some embodiments, if the patient is determined to have severe hepatic impairment, the patient will not receive the compound or the administration of the compound to said patient will cease. In some embodiments, if the patient is determined to have moderate hepatic impairment, the patient will not receive the compound or the administration of the compound to said patient will cease. In some embodiments, if the patient is determined to have mild hepatic impairment, the patient will not receive the compound or the administration of the compound to said patient will cease.

[0267] In some embodiments, the patient will be screened to determine if the ALT >1.5 x ULN OR AST >1.5 x ULN OR alkaline phosphatase >2 x ULN (unless caused by non-liver- related disorder or explained by a stable chronic liver disorder) OR total bilirubin >1.5 x ULN (unless due to Gilbert syndrome or non-liver-related disorder). Such patient’s that have enzymes above these levels will not be administered the compound or if they have already received the compound, will discontinue receiving the compound.

[0268] In some embodiments, the dose is once daily. In some embodiments, the dose is administered once daily with food. In some embodiments, the dose is 60 mg, measured in baseAttorney Docket No. 01183-0339-00PCT-PRN form, and is administered once daily with food. In some embodiments, tolebrutinib is administered as monotherapy.

[0269] In some embodiments, the patient is a mammal. In some embodiments, the mammal is a human. In some embodiments, the patient is a human subject ranging in age from 12 to 55 years old. In some embodiments, the patient is a human subject at least 18 years old. In some embodiments, the patient is a human subject ranging in age from 18 to 90 years old, for example, 20 to 85 years old, 25 to 80 years old, 30 to 75 years old, 35 to 70 years old, 40 to 65 years old, 45 to 60 years old or 50 to 55 years old.

[0270] In some embodiments the therapeutically effective amount is about 5 to about 60 mg, measured in base form. In some embodiments, the patient is a mammal. In some embodiments, the mammal is a human. In some embodiments, the patient is a human patient ranging in age from 12 to 55 years old. In some embodiments, the patient is a human subject at least 18 years old. In some embodiments, the patient is a human patient ranging in age from 18 to 90 years old, for example, 20 to 85 years old, 25 to 80 years old, 30 to 75 years old, 35 to 70 years old, 40 to 65 years old, 45 to 60 years old or 50 to 55 years old.

[0271] In some embodiments, tolebrutinib is administered as monotherapy. In some embodiments, tolebrutinib is administered as monotherapy in 60 mg doses. In some embodiments, tolebrutinib is administered as monotherapy in 60 mg doses once daily. In some embodiments, tolebrutinib is administered as monotherapy in 60 mg doses once daily with food.

[0272] In some embodiments, a dose of about 5-10 mg, 10-15 mg, 15-20 mg, 20-25 mg, 25-30 mg, 30-35 mg, 35-40 mg, 40-45 mg, 45-50 mg, 50-55 mg, or 55-60 mg of tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form, is administered. In some embodiments, the dose is 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg, 35 mg, 40 mg, 45 mg, 50 mg, 55 mg, or 60 mg of tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form. In some embodiments, the dose is 5 mg of tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form. In some embodiments, the dose is 15 mg of tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form. In some embodiments, the dose is 30 mg. In some embodiments, the dose is 60 mg of tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form.

[0273] In some embodiments, the dose is administered daily. The daily dose can be delivered as a single dose or split into multiple parts. For example, in some embodiments, the dose is administered once a day (e.g., about every 24 hours). In some embodiments, the dose is administered twice daily. In some embodiments, the dose is subdivided in two parts to beAttorney Docket No. 01183-0339-00PCT-PRN administered twice per day (e.g., about every 12 hours). In some embodiments, the dose is subdivided in three parts to be administered three times per day (e.g., about every 8 hours). In some embodiments, the dose is subdivided in four parts to be administered four times per day (e.g., about every 6 hours).

[0274] In some embodiments, the dose is administered orally. In some embodiments, the dose is administered in a form of tablets. In some embodiments, the dose is administered in the form of pills, capsules, semisolids, powders, sustained release formulations, solutions, suspensions, elixirs, aerosols, or any other appropriate compositions.

[0275] In some embodiments, the patient is administered tolebrutinib for a period of about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 months, or for life. In some embodiments, the patient is administered tolebrutinib for a period of about 12 months. In some embodiments, the dose is once daily. In one embodiment, a method of treating MS is provided, the method comprising administering to a patient in need thereof 60 mg tolebrutinib or a pharmaceutically acceptable salt thereof, measured in base form.

[0276] In some embodiments, tolebrutinib is administered as monotherapy. In some embodiments, the method comprises administering tolebrutinib and at least one additional therapeutic agent. The additional therapeutic agent may be administered concurrently or sequentially with tolebrutinib.

[0277] Determination of the frequency of administration can be made by persons skilled in the art, such as an attending physician based on considerations of the condition being treated, age of the subject being treated, severity of the condition being treated, general state of health of the subject being treated and the like. In some embodiments, BTK inhibitor compounds are administered in a therapeutically effective amount for treatment of MS. The therapeutically effective amount is typically dependent on the weight of the subject being treated, his or her physical or health condition, the extensiveness of the condition to be treated, or the age of the subject being treated, pharmaceutical formulation methods, or administration methods (e.g., administration time and administration route).

[0278] In some embodiments, a method of treating MS is provided, comprising the steps of performing an iron panel test using a patient’ s blood or serum, and if the patient has a suitable iron panel, administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments the iron panel test measures any one or more of levels of iron, ferritin, transferrin saturation, and total iron-binding capacity (TIBC) in a patient’s blood or serum. In some embodiments, a suitable iron panel includes one or more of the following: (i) an ironAttorney Docket No. 01183-0339-00PCT-PRN level of 60 to 170 pg / dL, (ii) a ferritin level of < 500 pg / L (iii) a transferrin saturation level < 50% in a male patient or < 40% in a female patient, and (iv) a TIBC of 240 to 450 pg / dL.

[0279] In some embodiments, a method of treating MS is provided, comprising the steps of performing an iron panel test in a patient’s blood or serum, detecting levels of the iron panel test that are within normal ranges, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments the iron panel test measures any one or more of levels of iron, ferritin, transferrin saturation, and total iron-binding capacity (TIBC) in a patient’s blood or serum. In some embodiments, the normal ranges of the iron panel test include one or more of (i) an iron level of 60 to 170 pg / dL, (ii) a ferritin level of < 500 pg / L (iii) a transferrin saturation level < 50% in a male patient or < 40% in a female patient, and (iv) a TIBC of 240 to 450 pg / dL.

[0280] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of performing an iron panel test in a patient’s blood or serum, detecting levels of the iron panel test that are within normal ranges, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments the iron panel test measures any one or more of levels of iron, ferritin, transferrin saturation, and total iron-binding capacity (TIBC) in a patient’s blood or serum. In some embodiments, the normal ranges of the iron panel test include one or more of (i) an iron level of 60 to 170 pg / dL, (ii) a ferritin level of < 500 pg / L (iii) a transferrin saturation level < 50% in a male patient or < 40% in a female patient, and (iv) a TIBC of 240 to 450 pg / dL.

[0281] In some embodiments, a method of treating MS is provided, comprising the steps of determining the level of transferrin saturation in a patient's blood or serum, and if the level of transferrin saturation is suitable, administering a therapeutically effective amount of tolebrutinib to the patient. In some embodiments, a suitable transferrin saturation level in the blood or serum of a male patient is a transferrin saturation of < 50%. In some embodiments, a suitable transferrin saturation level in the blood or serum of a female patient is a transferrin saturation of < 40%.

[0282] In some embodiments, a method of treating MS is provided, comprising the steps of detecting a level of transferrin saturation in a patient’s blood or serum that is within normal range, and administering a therapeutically effective amount of tolebrutinib to the patient. In some embodiments, a transferrin saturation level that is within normal range in the blood or serum of a male patient is a transferrin saturation of < 50%. In some embodiments, a transferrin saturation level that is within normal range in the blood or serum of a female patient is a transferrin saturation of < 40%.Attorney Docket No. 01183-0339-00PCT-PRN

[0283] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of detecting a level of transferrin saturation in a patient's blood or serum that is within normal range, and administering a therapeutically effective amount of tolebrutinib to the patient. In some embodiments, a transferrin saturation level that is within normal range in the blood or serum of a male patient is a transferrin saturation of < 50%. In some embodiments, a transferrin saturation level that is within normal range in the blood or serum of a female patient is a transferrin saturation of < 40%. In some embodiments, detecting a level of transferrin saturation is done in a previously collected patient's blood or serum sample.

[0284] In some embodiments, a method of treating MS is provided, comprising the steps of determining the level of ferritin in a patient’s blood or serum, and if the level of ferritin is suitable, administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, a suitable ferritin level in the blood or serum of a patient is < 500 pg / L.

[0285] In some embodiments, a method of treating MS is provided, comprising the steps of detecting a level of ferritin in a patient’s blood or serum that is within normal range, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, a ferritin level that is within normal range in the blood or serum of a patient is < 500 pg / L.

[0286] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of detecting a level of ferritin in a patient’s blood or serum that is within normal range, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, a ferritin level that is within normal range in the blood or serum of a patient is < 500 pg / L. In some embodiments, detecting a level of ferritin is done in a previously collected patient’s blood or serum sample.

[0287] In some embodiments, a method of treating MS is provided, comprising the steps of performing liver function tests in a patient, and if the patient has suitable liver function, administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, the liver function tests measure one or more of the levels of aspartate transaminase (AST), alanine transaminase (ALT), albumin, alkaline phosphatase, total and direct bilirubin, and total protein in a patient’ s blood. In some embodiments a patient having a suitable liver function has one or more of ALT levels of < 1.5 x upper limit of normal (ULN), AST levels of < 1.5 x ULN, and alkaline phosphatase < 2 x ULN (unless caused by non- liver related disorder or explained by a stable chronic liver disorder) and total bilirubin < 1.5 x ULN (unless due to Gilbert syndrome or non-liver-related disorder).Attorney Docket No. 01183-0339-00PCT-PRN

[0288] In some embodiments, a method of treating MS is provided, comprising the steps of performing liver function tests in a patient, detecting suitable liver function, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, the liver function tests measure one or more of the levels of aspartate transaminase (AST), alanine transaminase (ALT), albumin, alkaline phosphatase, total and direct bilirubin, and total protein in a patient’ s blood. In some embodiments a patient having a suitable liver function has one or more of ALT levels of < 1.5 x upper limit of normal (ULN), AST levels of < 1.5 x ULN, and alkaline phosphatase < 2 x ULN (unless caused by non-liver related disorder or explained by a stable chronic liver disorder) and total bilirubin < 1.5 x ULN (unless due to Gilbert syndrome or non-liver-related disorder).

[0289] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of performing liver function tests in a patient, detecting suitable liver function, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, the liver function tests measure one or more of the levels of aspartate transaminase (AST), alanine transaminase (ALT), albumin, alkaline phosphatase, total and direct bilirubin, and total protein in a patient’s blood. In some embodiments a patient having a suitable liver function has one or more of ALT levels of < 1.5 x upper limit of normal (ULN), AST levels of < 1.5 x ULN, and alkaline phosphatase < 2 x ULN (unless caused by non-liver related disorder or explained by a stable chronic liver disorder) and total bilirubin < 1.5 x ULN (unless due to Gilbert syndrome or non-liver-related disorder). In some embodiments, measuring of aspartate transaminase (AST), alanine transaminase (ALT), albumin, alkaline phosphatase, total and direct bilirubin, and total protein is done in a previously collected patient’s blood sample.

[0290] In some embodiments, the liver function tests are performed at least about every 6 months, at least about every 5 months, at least about every 4 months, at least about every 3 months, at least about every 2 months, or at least about monthly. In some embodiments, the liver function tests are performed at least about every 12 weeks, at least about every 11 weeks, at least about every 10 weeks, at least about every 9 weeks, at least about every 8 weeks, at least about every 7 weeks, at least about every 6 weeks, at least about every 5 weeks, at least about every 4 weeks, at least about every 3 weeks, at least about every 2 weeks, or at least about weekly.

[0291] In some embodiments, a method of treating MS is provided, comprising the steps of:Attorney Docket No. 01183-0339-00PCT-PRN a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >8 x upper limit of normal (ULN); d) ceasing administration of tolebrutinib to the patient; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1 .5 x ULN.

[0292] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >8 x upper limit of normal (ULN); d) ceasing administration of the tolebrutinib to the patient; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0293] In some embodiments, a method of treating MS is provided, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >5 x upper limit of normal (ULN) during a period of at least two weeks; d) ceasing administration of tolebrutinib to the patient; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0294] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of:Attorney Docket No. 01183-0339-00PCT-PRN a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >5 x upper limit of normal (ULN) during a period of at least two weeks; d) ceasing administration of tolebrutinib to the patient; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0295] In some embodiments, a method of treating MS is provided, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >3 x upper limit of normal (ULN); d) measuring one or more of total bilirubin and international normalized ratio (INR) in a patient; e) detecting one or more of total bilirubin >2 x ULN and INR >1.5; f) ceasing administration of tolebrutinib to the patient; and optionally g) monitoring the level of ALT in the patient; and h) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0296] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >3 x upper limit of normal (ULN); d) measuring one or more of total bilirubin and international normalized ratio (INR) in a patient; e) detecting one or more of total bilirubin >2 x ULN and INR >1.5; f) ceasing administration of tolebrutinib to the patient; and optionally g) monitoring the level of ALT in the patient; andAttorney Docket No. 01183-0339-00PCT-PRN h) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0297] In some embodiments, a method of treating MS is provided, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >3 x upper limit of normal (ULN); d) ceasing administration of tolebrutinib to the patient if the patient experiences one or more of fatigue, nausea, vomiting, right upper quadrant pain or tenderness, fever, rash, and eosinophilia >5%; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0298] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of: a) administering a therapeutically effective amount of tolebrutinib to a patient in need thereof; b) measuring the level of alanine aminotransferase (ALT) in the patient; c) detecting a level of ALT of >3 x upper limit of normal (ULN); d) ceasing administration of tolebrutinib to the patient if the patient experiences one or more of fatigue, nausea, vomiting, right upper quadrant pain or tenderness, fever, rash, and eosinophilia >5%; and optionally e) monitoring the level of ALT in the patient; and f) resuming administration of a therapeutically effective amount of tolebrutinib to the patient when the patient’s level of ALT is determined to be <1.5 x ULN.

[0299] In some embodiments, the steps of measuring, detecting, and monitoring a level of ALT or total bilirubin are done on a previously collected blood or serum sample of the patient in need thereof.

[0300] In some embodiments, the ALT level in a patient is measured at least about every 6 months, at least about every 5 months, at least about every 4 months, at least about every 3 months, at least about every 2 months, or at least about monthly. In some embodiments, theAttorney Docket No. 01183-0339-00PCT-PRNALT level in a patient is measured at least about every 12 weeks, at least about every 11 weeks, at least about every 10 weeks, at least about every 9 weeks, at least about every 8 weeks, at least about every 7 weeks, at least about every 6 weeks, at least about every 5 weeks, at least about every 4 weeks, at least about every 3 weeks, at least about every 2 weeks, or at least about weekly.

[0301] In some embodiments, after ceasing administration of the compound, the ALT level in a patient is monitored about every 2 to 3 days, about every 3 days, about every 2 days, or about daily.

[0302] In some embodiments, a method of treating MS is provided, comprising administering to a therapeutically acceptable amount of tolebrutinib to a patient, wherein the patient is not receiving potent and moderate inducers of cytochrome P450 3A (CYP3A) or potent inhibitors of CYP2C8 hepatic enzymes. In some embodiments the potent CYP3A inducers are selected from rifampin, carbamazepine, phenobarbital, St John's Wort extract, avasimibe, lumacaftor, rifapentine, rifabutin, and phenytoin. In some embodiments the moderate CYP3A inducers are selected from semagacestat, asunaprevir, beclabuvir, daclatasvir, cenobamate, nafcillin, lesinurad, bosentan, telotristat ethyl, thioridazine, elagolix and rifabutin. In some embodiments, potent CYP2C8 inhibitors are selected from Gemfibrozil and Clopidogrel.

[0303] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising administering to a therapeutically acceptable amount of tolebrutinib to a patient, wherein the patient is not receiving potent and moderate inducers of cytochrome P450 3A (CYP3A) or potent inhibitors of CYP2C8 hepatic enzymes. In some embodiments the potent CYP3A inducers are selected from rifampin, carbamazepine, phenobarbital, St John’s Wort extract, avasimibe, lumacaftor, rifapentine, rifabutin, and phenytoin. In some embodiments the moderate CYP3A inducers are selected from semagacestat, asunaprevir, beclabuvir, daclatasvir, cenobamate, nafcillin, lesinurad, bosentan, telotristat ethyl, thioridazine, elagolix and rifabutin. In some embodiments, potent CYP2C8 inhibitors are selected from Gemfibrozil and Clopidogrel.

[0304] In some embodiments, a method of treating MS is provided, comprising administering to a therapeutically acceptable amount of tolebrutinib to a patient, wherein the patient is not receiving potent, moderate, or mild inhibitor of cytochrome P4502C8 (CYP2C8), potent or moderate CYP3 A inducers, or potent, moderate, or mild inhibitors of CYP3A hepatic enzymes. In some embodiments, potent CYP2C8 inhibitors are selected from Gemfibrozil and Clopidogrel. In some embodiments, moderate CYP2C8 inhibitor is Trimethoprim. In someAttorney Docket No. 01183-0339-00PCT-PRN embodiments, mild CYP2C8 inhibitors are selected from sulfamethoxazole, trimethoprim, and fluvoxamine. In some embodiments the potent CYP3A inducers are selected from avasimibe, rifampin, carbamazepine, lumacaftor, phenobarbital, phenytoin, rifapentine, and St John's Wort extract. In some embodiments the moderate CYP3A inducers are selected from elagolix, cenobamate, nafcillin, asunaprevir, beclabuvir, daclatasvir, lesinurad, bosentan, thioridazine, and rifabutin. In some embodiments the potent CYP3A inhibitors are selected from clarithromycin, itraconazole, ketoconazole, nirmatrelvir and ritonavir, fluoxetine, and grapefruit juice. Tn some embodiments the moderate CYP3A inhibitors are selected from ciprofloxacin, diltiazem, erythromycin, fluconazole, verapamil, and sertraline. In some embodiments the mild CYP3A inhibitors are selected from alprazolam, atorvastatin, amlodipine, cimetidine, ranitidine, roxithromycin, ginkgo biloba, and isoniazid.

[0305] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising administering to a therapeutically acceptable amount of tolebrutinib to a patient, wherein the patient is not receiving potent, moderate, or mild inhibitor of cytochrome P4502C8 (CYP2C8), potent or moderate CYP3 A inducers, or potent, moderate, or mild inhibitors of CYP3A hepatic enzymes. In some embodiments, potent CYP2C8 inhibitors are selected from Gemfibrozil and Clopidogrel. In some embodiments, moderate CYP2C8 inhibitor is Trimethoprim. In some embodiments, mild CYP2C8 inhibitors are selected from sulfamethoxazole, trimethoprim, and fluvoxamine. In some embodiments the potent CYP3A inducers are selected from avasimibe, rifampin, carbamazepine, lumacaftor, phenobarbital, phenytoin, rifapentine, and St John's Wort extract. In some embodiments the moderate CYP3A inducers are selected from elagolix, cenobamate, nafcillin, asunaprevir, beclabuvir, daclatasvir, lesinurad, bosentan, thioridazine, and rifabutin. In some embodiments the potent CYP3A inhibitors are selected from clarithromycin, itraconazole, ketoconazole, nirmatrelvir and ritonavir, fluoxetine, and grapefruit juice. In some embodiments the moderate CYP3A inhibitors are selected from ciprofloxacin, diltiazem, erythromycin, fluconazole, verapamil, and sertraline. In some embodiments the mild CYP3A inhibitors are selected from alprazolam, atorvastatin, amlodipine, cimetidine, ranitidine, roxithromycin, ginkgo biloba, and isoniazid.

[0306] In some embodiments, a method of treating MS is provided, comprising the steps of advising the patient to limit alcohol consumption during treatment, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, the patient is female and is advised to limit alcohol consumption to 1 drink per day or less. In some embodiments, 1 drink is approximately 14 grams of alcohol (e.g., 350 mL beer, 140 mL wine,Attorney Docket No. 01183-0339-00PCT-PRN or 40 mL spirits). In some embodiments, the patient is male and is advised to limit alcohol consumption to 2 drinks per day or less. In some embodiments, 2 drinks is approximately 28 grams of alcohol.

[0307] In some embodiments, the present disclosure provides tolebrutinib for use in a method of treating MS, comprising the steps of advising the patient to limit alcohol consumption during treatment, and administering a therapeutically acceptable amount of tolebrutinib to the patient. In some embodiments, the patient is female and is advised to limit alcohol consumption to 1 drink per day or less. Tn some embodiments, 1 drink is approximately 14 grams of alcohol (e.g., 350 mL beer, 140 mL wine, or 40 mL spirits). In some embodiments, the patient is male and is advised to limit alcohol consumption to 2 drinks per day or less. In some embodiments, 2 drinks is approximately 28 grams of alcohol.

[0308] The choice of formulation depends on various factors such as the mode of drug administration (e.g., for oral administration, formulations in the form of tablets, pills or capsules are preferred) and the bioavailability of the drug substance. Recently, pharmaceutical formulations have been developed especially for drugs that show poor bioavailability based upon the principle that bioavailability can be increased by increasing the surface area i.e., decreasing particle size. For example, U.S. Pat. No. 4,107,288 describes a pharmaceutical formulation having particles in the size range from 10 to 1,000 nm in which the active material is supported on a crosslinked matrix of macromolecules. U.S. Pat. No. 5,145,684 describes the production of a pharmaceutical formulation in which the drug substance is pulverized to nanoparticles (average particle size of 400 nm) in the presence of a surface modifier and then dispersed in a liquid medium to give a pharmaceutical formulation that exhibits remarkably high bioavailability. Bioavailability of drugs that decompose at stomach pH can be increased by administration of such drugs in a formulation that releases the drug intraduodenally.

[0309] The compositions are comprised of in general, tolebrutinib or a pharmaceutically acceptable salt thereof in combination with a pharmaceutically acceptable excipient such as binders, surfactants, diluents, buffering agents, antiadherents, glidants, hydrophilic or hydrophobic polymers, retardants, stabilizing agents or stabilizers, disintegrants or superdisintegrants, antioxidants, antifoaming agents, fillers, flavors, colors, lubricants, sorbents, preservatives, plasticizers, or sweeteners, or mixtures thereof, which facilitate processing of tolebrutinib or a pharmaceutically acceptable salt thereof into preparations which can be used pharmaceutically. Any of the well-known techniques and excipients may be used as suitable and as understood in the art, see for example, Remington: The Science and Practice of Pharmacy, Twenty-first Ed., (Pharmaceutical Press, 2005); Liberman, H. A., Lachman, L.,Attorney Docket No. 01183-0339-00PCT-PRN and Schwartz, J.B. Eds., Pharmaceutical Dosage Forms, Vol. 1-2 Taylor & Francis 1990; and R.I. Mahato, Ansel’s Pharmaceutical Dosage Forms and Drug Delivery Systems, Second Ed. (Taylor & Francis, 2012).

[0310] In certain embodiments, the formulations may include one or more pH adjusting agents or buffering agents, for example, acids such as acetic, boric, citric, fumaric, maleic, tartaric, malic, lactic, phosphoric and hydrochloric acids; bases such as sodium hydroxide, sodium phosphate, sodium borate, sodium citrate, sodium acetate, sodium lactate and tris- hydroxymethylaminomethane; and buffers such as citrate / dextrose, sodium bicarbonate, ammonium chloride, and the like. Such buffers used as bases may have other counterions than sodium, for example, potassium, magnesium, calcium, ammonium, or other counterions. Such acids, bases and buffers are included in an amount required to maintain pH of the composition in an acceptable range.

[0311] In certain embodiments, the formulations may also include one or more salts in an amount required to bring osmolality of the composition into an acceptable range. Such salts include those having sodium, potassium or ammonium cations and chloride, citrate, ascorbate, borate, phosphate, bicarbonate, sulfate, thiosulfate, or bisulfite anions; suitable salts include sodium chloride, potassium chloride, sodium thiosulfate, sodium bisulfite and ammonium sulfate.

[0312] In certain embodiments, the formulations may also include one or more antifoaming agents to reduce foaming during processing which can result in coagulation of aqueous dispersions, bubbles in the finished film, or generally impair processing. Exemplary antifoaming agents include silicon emulsions or sorbitan sesquoleate.

[0313] In certain embodiments, the formulations may also include one or more antioxidants, such as non-thiol antioxidants, for example, butylated hydroxytoluene (BHT), sodium ascorbate, ascorbic acid or its derivative, and tocopherol or its derivatives. In certain embodiments, antioxidants enhance chemical stability where required. Other agents such as citric acid or citrate salts or EDTA may also be added to slow oxidation.

[0314] In certain embodiments, the formulations may also include one or more preservatives to inhibit microbial activity. Suitable preservatives include mercury-containing substances such as merfen and thiomersal; stabilized chlorine dioxide; and quaternary ammonium compounds such as benzalkonium chloride, cetyltrimethylammonium bromide, and cetylpyridinium chloride.

[0315] In certain embodiments, the formulations may also include one or more binders. Binders impart cohesive qualities and include, e.g., alginic acid and salts thereof; celluloseAttorney Docket No. 01183-0339-00PCT-PRN derivatives such as carboxymethylcellulose, methylcellulose (e.g., Methocel®), hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose (e.g., Klucel®), ethylcellulose (e.g., Ethocel®), and microcrystalline cellulose (e.g., Avicel®); microcrystalline dextrose; amylose; magnesium aluminum silicate; polysaccharide acids; bentonites; gelatin; polyvinyl-pyrrolidone / vinyl acetate copolymer; crosspovidone; povidone; starch; pregelatinized starch; tragacanth, dextrin, a sugar, such as sucrose (e.g., Dipac®), glucose, dextrose, molasses, mannitol, sorbitol, xylitol (e.g., Xylitab®), and lactose; a natural or synthetic gum such as acacia, tragacanth, ghatti gum mucilage of isapol husks, polyvinylpyrrolidone (e.g., Polyvidone® CL, Kollidon® CL, Polyplasdone® XL- 10), larch arabogalactan, Veegum®, polyethylene glycol, polyethylene oxide, waxes, sodium alginate, and the like.

[0316] In certain embodiments, the formulations may also include dispersing agents or viscosity modulating agents. Dispersing agents or viscosity modulating agents include materials that control the diffusion and homogeneity of a drug through liquid media or a granulation method or blend method. In some embodiments, these agents also facilitate the effectiveness of a coating or eroding matrix. Exemplary diffusion facilitators / dispersing agents include, e.g., hydrophilic polymers, electrolytes, Tween®60 or 80, PEG, polyvinylpyrrolidone (PVP; commercially known as Plasdone®), and the carbohydrate-based dispersing agents such as, for example, hydroxypropyl celluloses (e.g., HPC, H— PC-SL, and HPC-L), hydroxypropyl methylcelluloses (e.g., HPMC K100, RPMC K4M, HPMC K15M, and HPMC KI OOM), carboxymethylcellulose sodium, methylcellulose, hydroxyethylcellulose, hydroxypropyl-cellulose, hydroxypropylmethylcellulose phthalate, hydroxypropyl- methylcellulose acetate stearate (HPMC AS), noncrystalline cellulose, polyethylene oxides, magnesium aluminum silicate, triethanolamine, polyvinyl alcohol (PVA), vinyl pyrrolidone / vinyl acetate copolymer (S630), 4-( 1 , 1 ,3,3-tetramethylbutyl)-phenol polymer with ethylene oxide and formaldehyde (also known as tyloxapol), poloxamers (e.g., Pluronics F68®, F88®., and F10®8, which are block copolymers of ethylene oxide and propylene oxide); and poloxamines (e.g., Tetronic 908®, also known as Poloxamine 908®, which is a tetrafonctional block copolymer derived from sequential addition of propylene oxide and ethylene oxide to ethylenediamine (BASF Corporation, Parsippany, N.J.)), polyvinylpyrrolidone K12, polyvinylpyrrolidone K17, polyvinylpyrrolidone K25, or polyvinylpyrrolidone K30, polyvinylpyrrolidone / vinyl acetate copolymer (S-630), polyethylene glycol, e.g., the polyethylene glycol can have a molecular weight of about 300 to about 6000, or about 3350 to about 4000, or about 7000 to 5400, sodiumAttorney Docket No. 01183-0339-00PCT-PRN carboxymethylcellulose, methylcellulose, polysorbate-80, sodium alginate, gums, such as, e.g., gum tragacanth and gum acacia, guar gum, xanthans, including xanthan gum, sugars, cellulosics, such as, e.g., e.g., sodium carboxymethylcellulose, methylcellulose, sodium carboxymethylcellulose, polysorbate-80, sodium alginate, polyethoxylated sorbitan monolaurate, polyethoxylated sorbitan monolaurate, povidone, carbomers, polyvinyl alcohol (PVA), alginates, chitosans and combinations thereof. Plasticizcers such as cellulose or triethyl cellulose can also be used as dispersing agents. Dispersing agents particularly useful in liposomal dispersions and self- emulsifying dispersions are dimyristoyl phosphatidyl choline, natural phosphatidyl choline from eggs, natural phosphatidyl glycerol from eggs, cholesterol and isopropyl myristate. In general, binder levels of about 10 to about 70% are used in powder- filled gelatin capsule formulations. Binder usage level in tablet formulations varies whether direct compression, wet granulation, roller compaction, or usage of other excipients such as fillers which itself can act as moderate binder. Formulators skilled in art can determine the binder level for the formulations, but binder usage level of up to 90% and more typically up to 70% in tablet formulations is common.

[0317] In certain embodiments, the formulations may also include one or more diluents which refer to chemical compounds that are used to dilute the compound of interest prior to delivery.

[0318] Diluents can also be used to stabilize compounds because they can provide a more stable environment Salts dissolved in buffered solutions (which also can provide pH control or maintenance) are utilized as diluents in the art, including, but not limited to a phosphate buffered saline solution. In certain embodiments, diluents increase bulk of the composition to facilitate compression or create sufficient bulk for homogenous blend for capsule filling. Such compounds include e.g., lactose, starch, mannitol, sorbitol, dextrose, microcrystalline cellulose such as Avicel®; dibasic calcium phosphate, dicalcium phosphate dihydrate; tricalcium phosphate, calcium phosphate; anhydrous lactose, spray-dried lactose; pregelatinized starch, compressible sugar, such as Di-Pac® (Amstar); hydroxypropyl-methylcellulose, hydroxypropylmethylcellulose acetate stearate, sucrose- based diluents, confectioner's sugar; monobasic calcium sulfate monohydrate, calcium sulfate dihydrate; calcium lactate trihydrate, dextrates; hydrolyzed cereal solids, amylose; powdered cellulose, calcium carbonate; glycine, kaolin; mannitol, sodium chloride; inositol, bentonite, and the like.

[0319] In certain embodiments, the formulations may also include one or more disintegrants which includes both the dissolution and dispersion of the dosage form when contacted with gastrointestinal fluid. Disintegration agents or disintegrants facilitate theAttorney Docket No. 01183-0339-00PCT-PRN breakup or disintegration of a substance. Examples of disintegration agents include a starch, e.g., e.g., a natural starch such as com starch or potato starch, a pregelatinized starch such as National 1551 or sodium starch glycolate such as Promogel® or Explotab®, a cellulose such as a wood product, methylcrystalline cellulose, e.g., e.g., Avicel®, Avicel® PH101, Avicel® PH 102, Avicel® PH105, Elceme® P100, Emcocel®, Vivacel®, and Solka-Floc®, methylcellulose, croscarmellose, or a cross-linked cellulose, such as cross-linked sodium carboxymethyl-cellulose (Ac-Di-Sol®), cross-linked carboxymethylcellulose, or cross-linked croscarmellose, a cross-linked starch such as sodium starch glycolate, a cross-linked polymer such as crosspovidone, a cross-linked polyvinylpyrrolidone, alginate such as alginic acid or a salt of alginic acid such as sodium alginate, a clay such as Veegum® HV (magnesium aluminum silicate), a gum such as agar, guar, locust bean, Karaya, pectin, or tragacanth, sodium starch glycolate, bentonite, a natural sponge, a surfactant, a resin such as a cation-exchange resin, citrus pulp, sodium lauryl sulfate, sodium lauryl sulfate in combination starch, and the like.

[0320] In certain embodiments, the formulations may also include erosion facilitators. Erosion facilitators include materials that control the erosion of a particular material in gastrointestinal fluid. Erosion facilitators are generally known to those of ordinary skill in the art. Exemplary erosion facilitators include, e.g., hydrophilic polymers, electrolytes, proteins, peptides, and amino acids.

[0321] In certain embodiments, the formulations may also include one or more filling agents which include compounds such as lactose, calcium carbonate, calcium phosphate, dibasic calcium phosphate, calcium sulfate, microcrystalline cellulose, cellulose powder, dextrose, dextrates, dextran, starches, pregelatinized starch, sucrose, xylitol, lactitol, mannitol, sorbitol, sodium chloride, polyethylene glycol, and the like.

[0322] In certain embodiments, the formulations may also include one or more flavoring agents or sweeteners, e.g., acacia syrup, acesulfame K, alitame, anise, apple, aspartame, banana, Bavarian cream berry, black currant, butterscotch, calcium citrate, camphor, caramel, cherry, cherry cream chocolate, cinnamon, bubble gum, citrus, citrus punch, citrus cream, cotton candy, cocoa, cola, cool cherry, cool citrus, cyclamate, cyclamate, dextrose, eucalyptus, eugenol, fructose, fruit punch, ginger, glycyrrhizinate, glycyrrhiza (licorice) syrup, grape, grapefruit, honey, isomalt, lemon, lime, lemon cream, monoammonium glyrrhizinate, maltol, mannitol, maple, marshmallow, menthol, mint cream, mixed berry, neohesperidine DC, neotame, orange, pear, peach, peppermint, peppermint cream, Powder, raspberry, root beer, rum, saccharin, safrole, sorbitol, spearmint, spearmint cream, strawberry, strawberry cream,Attorney Docket No. 01183-0339-00PCT-PRN stevia, sucralose, sucrose, sodium saccharin, saccharin, aspartame, acesulfame potassium, mannitol, talin, xylitol, sucralose, sorbitol, Swiss cream, tagatose, tangerine, thaumatin, tutti frutti, vanilla, walnut, watermelon, wild cherry, wintergreen, xylitol, or any combination of these flavoring ingredients, e.g., anise-menthol, cherry-anise, cinnamon-orange, cherrycinnamon, chocolate-mint, honey-lemon, lemon-lime, lemon-mint, menthol-eucalyptus, orange-cream, vanilla-mint, and mixtures thereof.

[0323] In certain embodiments, the formulations may also include one or more lubricants and glidants which are compounds that prevent, reduce or inhibit adhesion or friction of materials.

[0324] Exemplary lubricants include, e.g., stearic acid, calcium hydroxide, talc, sodium stearyl lumerate, a hydrocarbon such as mineral oil, or hydrogenated vegetable oil such as hydrogenated soybean oil, higher fatty acids and their alkali-metal and alkaline earth metal salts, such as aluminum, calcium, magnesium, zinc, stearic acid, sodium stearates, glycerol, talc, waxes, boric acid, sodium benzoate, sodium acetate, sodium chloride, leucine, a polyethylene glycol e.g., PEG4000) or a methoxypolyethylene glycol such as Carbowax®, sodium oleate, sodium benzoate, glyceryl behenate, polyethylene glycol, magnesium or sodium lauryl sulfate, colloidal silica such as Syloid®, Cab-O- Sil®, a starch such as com starch, silicone oil, a surfactant, and the like.

[0325] In certain embodiments, the formulations may also include one or more plasticizers which are compounds used to soften the enteric or delayed release coatings to make them less brittle. Suitable plasticizers include, e.g., polyethylene glycols such as PEG 300, PEG 400, PEG 600, PEG 1450, PEG 3350, and PEG 800, stearic acid, propylene glycol, oleic acid, triethyl citrate, dibutyl sebacate, triethyl cellulose and triacetin. In some embodiments, plasticizers can also function as dispersing agents or wetting agents.

[0326] In certain embodiments, the formulations may also include one or more solubilizers which include compounds such as triacetin, triethylcitrate, ethyl oleate, ethyl caprylate, sodium lauryl sulfate, sodium doccusate, vitamin E TPGS, dimethylacetamide, N-methylpyrrolidone, N- hydroxyethylpyrrolidone, polyvinylpyrrolidone, hydroxypropylmethyl cellulose, hydroxypropyl cyclodextrins for example Captisol®, ethanol, n-butanol, isopropyl alcohol, cholesterol, bile salts, polyethylene glycol 200-600, glycofurol, transcutol, propylene glycol, and dimethyl isosorbide and the like. In one embodiment, the solubilizer is vitamin E TPGS or Captisol® or B- hydroxypropylcyclodextrin.

[0327] In certain embodiments, the formulations may also include one or more suspending agents which include compounds such as polyvinylpyrrolidone, e.g., polyvinylpyrrolidoneAttorney Docket No. 01183-0339-00PCT-PRNKI 12, polyvinylpyrrolidone K17, polyvinylpyrrolidone K25, or polyvinylpyrrolidone K30, vinyl pyrrolidone / vinyl acetate copolymer (S630), polyethylene glycol, e.g., the polyethylene glycol can have a molecular weight of about 300 to about 6000, or about 3350 to about 4000, or about 7000 to about 5400, sodium carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, hydroxymethylcellulose acetate stearate, polysorbate-80, hydroxyethylcellulose, sodium alginate, gums, such as, e.g., gum tragacanth and gum acacia, guar gum, xanthans, including xanthan gum, sugars, cellulosics, such as, e.g., sodium carboxymethylcellulose, methylcellulose, sodium carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, polysorbate- 80, sodium alginate, polyethoxylated sorbitan monolaurate, polyethoxylated sorbitan monoleate, povidone and the like.

[0328] In certain embodiments, the formulations may also include one or more surfactants which include compounds such as sodium lauryl sulfate, sodium docusate, Tween 20, 60 or 80, triacetin, vitamin E TPGS, sorbitan monooleate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monolaurate, polysorbates, polaxomers, bile salts, glyceryl monostearate, copolymers of ethylene oxide and propylene oxide, e.g., Plutonic® (BASF), and the like. Some other surfactants include polyoxyethylene fatty acid glycerides and vegetable oils, e.g., polyoxyethylene (60) hydrogenated castor oil; and polyoxyethylene alkylethers and alkylphenyl ethers, e.g., octoxynol 10, octoxynol 40. In some embodiments, surfactants may be included to enhance physical stability or for other purposes.

[0329] In certain embodiments, the formulations may also include one or more viscosity enhancing agents which include, e.g., methyl cellulose, xanthan gum, carboxymethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxypropylmethyl cellulose acetate stearate, hydroxypropylmethyl cellulose phthalate, carbomer, polyvinyl alcohol alginates, acacia, chitosans and combinations thereof.

[0330] In certain embodiments, the formulations may also include one or more wetting agents which include compounds such as oleic acid, glyceryl monostearate, sorbitan monooleate, sorbitan monolaurate, triethanolamine oleate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monolaurate, sodium docusate, sodium oleate, sodium lauryl sulfate, sodium doccusate, triacetin, Tween 80, vitamin E TPGS, ammonium salts and the like.

[0331] Pharmaceutical preparations disclosed herein can be obtained by mixing one or more solid excipient such as carrier, binder, filling agent, suspending agent, flavoring agent, sweetening agent, disintegrating agent, dispersing agent, surfactant, lubricant, colorant diluent,Attorney Docket No. 01183-0339-00PCT-PRN solubilizer, moistening agent, plasticizer, stabilizer, penetration enhancer, wetting agent, antifoaming agent, antioxidant, preservative, or one or more combination thereof with one or more of the compounds described herein, optionally grinding the resulting mixture, and processing the mixture of granules, after adding suitable excipients, if desired, to obtain tablets.

[0332] Pharmaceutical preparations disclosed herein also include capsules made of gelatin, as well as soft, sealed capsules made of gelatin and a plasticizer, such as glycerol or sorbitol. Capsules may also be made of polymers such as hypromellose. The capsules can contain the active ingredients in admixture with filler such as lactose, binders such as starches, or lubricants such as talc or magnesium stearate and, optionally, stabilizers. In soft capsules, the active compounds may be dissolved or suspended in suitable liquids, such as fatty oils, liquid paraffin, lipids, solubilizers, or liquid polyethylene glycols. In addition, stabilizers may be added. All formulations for oral administration should be in dosages suitable for such administration.

[0333] These formulations can be manufactured by conventional pharmacological techniques. Conventional pharmacological techniques include, e.g., one or a combination of methods: (1) dry mixing, (2) direct compression, (3) milling, (4) dry or non-aqueous granulation, (5) wet granulation, (6) fusion, or (7) extrusion. See, e.g., Lachman et al., The Theory and Practice of Industrial Pharmacy, 3rded. (1986). Other methods include, e.g., spray drying, pan coating, melt granulation, granulation, fluidized bed spray drying or coating e.g., wurster coating), tangential coating, top spraying, tableting, extruding, extrusion / spheronization, and the like.

[0334] It should be appreciated that there is considerable overlap between excipients used in the solid dosage forms described herein. Thus, the above-listed additives should be taken as merely exemplary, and not limiting, of the types of excipients that can be included in solid dosage forms described herein. The type and amounts of such excipient can be readily determined by one skilled in the art, according to the particular properties desired.

[0335] In some embodiments, the solid dosage forms described herein are enteric coated oral dosage forms, i.e., as an oral dosage form of a pharmaceutical composition as described herein which utilizes an enteric coating to affect the release of the compound in the intestine of the gastrointestinal tract. An “enterically coated” drug or tablet refers to a drug or tablet that is coated with a substance that remains intact in the stomach but dissolves and releases the drug once the intestine (in one embodiment small intestine) is reached. As used herein "enteric coating", is a material, such as a polymer material or materials which encase the therapeutically active agent core either as a dosage form or as particles. Typically, a substantial amount or allAttorney Docket No. 01183-0339-00PCT-PRN of the enteric coating material is dissolved before the therapeutically active agent is released from the dosage form, so as to achieve delayed dissolution of the therapeutically active agent core or particles in the small or large intestine. Enteric coatings are discussed, for example, Loyd, V. Allen, Remington: The Science and Practice of Pharmacy, Twenty-first Ed., (Pharmaceutical Press, 2005; and P.J. Tarcha, Polymers for Controlled Drug Delivery, Chapter 3, CRC Press, 1991. Methods for applying enteric coatings to pharmaceutical compositions are well known in the art, and include for example, U.S. Patent Publication No. 2006 / 0045822.

[0336] The enteric coated dosage form may be a compressed or molded or extruded tablet (coated or uncoated) containing granules, powder, pellets, beads, or particles of tolebrutinib or a pharmaceutically acceptable salt thereof or other excipients, which are themselves coated or uncoated provided at least the tablet or tolebrutinib is coated. The enteric coated oral dosage form may also be a capsule (coated or uncoated) containing pellets, beads, or granules of tolebrutinib or a pharmaceutically acceptable salt thereof or other excipients, which are themselves coated or uncoated provided at least one of them is coated. Some examples of coatings that were originally used as enteric coatings are beeswax and glyceryl monostearate; beeswax, shellac, and cellulose; and cetyl alcohol, mastic, and shellac as well as shellac and stearic acid (U.S. Pat. No. 2,809,918); polyvinylacetate and ethyl cellulose (U.S. Pat. No. 3,835,221). More recently, the coatings used are neutral copolymers of polymethacrylic acid esters (Eudragit L30D). (F. W. Goodhart et al, Pharm. Tech., p. 64-71, April 1984); copolymers of methacrylic acid and methacrylic acid methyl ester (Eudragit S), or a neutral copolymer of polymethacrylic acid esters containing metallic stearates (Mehta et al U.S. Pat. Nos. 4,728,512 and 4,794,001), cellulose acetate succinate, and hypromellose phthalate.

[0337] Any anionic polymer exhibiting a pH-dependent solubility profile can be used as an enteric coating in the methods and compositions described herein to achieve delivery to the intestine. In one embodiment, delivery can be to the small intestine. In another embodiment, delivery can be to the duodenum. In some embodiments the polymers described herein are anionic carboxylic polymers. In other embodiments, the polymers, and compatible mixtures thereof, and some of their properties, include, but are not limited to the following.

[0338] Shellac: Also called purified lac, it is a refined product obtained from the resinous secretion of an insect. This coating dissolves in media of pH>7.

[0339] Acrylic polymers: The performance of acrylic polymers (primarily their solubility in biological fluids) can vary based on the degree and type of substitution. Examples of suitable acrylic polymers include methacrylic acid copolymers and ammonium methacrylate copolymers. The Eudragit series L, S, and RS (manufactured Rohm Pharma and known asAttorney Docket No. 01183-0339-00PCT-PRNEvonik®) are available as solubilized in organic solvent, aqueous dispersion, or dry powders. The Eudragit series RL, NE, and RS are insoluble in the gastrointestinal tract but are permeable and are used primarily for colonic targeting. The Eudragit series L, L-30D and S are insoluble in stomach and dissolve in the intestine and may be selected and formulated to dissolve at a value of pH greater than 5.5 or as low as greater than 5 or as high as greater than 7.

[0340] Cellulose Derivatives: Examples of suitable cellulose derivatives are ethyl cellulose; reaction mixtures of partial acetate esters of cellulose with phthalic anhydride. The performance can vary based on the degree and type of substitution. Cellulose acetate phthalate (CAP) dissolves in pH>6. Aquateric (FMC) is an aqueous based system and is a spray dried CAP pseudolatex with particles <1 pm. Other components in Aquateric can include pluronics, Tweens, and acetylated monoglycerides. Other suitable cellulose derivatives include cellulose acetate tritnellitate (Eastman); methylcellulose (Pharmacoat, Methocel); hydroxypropylmethyl cellulose phthalate (HPMCP); hydroxypropylmethyl cellulose succinate (HPMCS); and hydroxypropylmethylcellulose acetate succinate (HPMCAS e.g., AQOAT (Shin Etsu)). The performance can vary based on the degree and type of substitution. For example, HPMCP such as, HP-50, HP-55, HP-55S, HP-55F grades are suitable. The performance can vary based on the degree and type of substitution. For example, suitable grades of hydroxypropylmethylcellulose acetate succinate include, but are not limited to, AS-LG (LF), which dissolves at pH 5, AS-MG (MF), which dissolves at pH 5.5, and AS-HG (HF), which dissolves at higher pH. These polymers are offered as granules, or as fine powders for aqueous dispersions.

[0341] Poly Vinyl Acetate Phthalate (PVAP): PVAP dissolves in pH>5, and it is much less permeable to water vapor and gastric fluids. Detailed description of above polymers and their pH- dependent solubility can be found at in the article titled “Enteric coated hard gelatin capsules” by Professor Karl Thoma and Karoline Bechtold at http: / / pop.www.capsugel.com / media / library / enteric- coated-hard-gelatin-capsules.pdf. In some embodiments, the coating can, and usually does, contain a plasticizer and possibly other coating excipients such as colorants, talc, or magnesium stearate, which are well known in the art. Suitable plasticizers include triethyl citrate (Citroflex 2), triacetin (glyceryl triacetate), acetyl triethyl citrate (Citroflec A2), Carbowax 400 (polyethylene glycol 400), diethyl phthalate, tributyl citrate, acetylated monoglycerides, glycerol, fatty acid esters, propylene glycol, and dibutyl phthalate. In particular, anionic carboxylic acrylic polymers usually contain 10- 25% by weight of a plasticizer, especially dibutyl phthalate, polyethylene glycol, triethyl citrate and triacetin. Conventional coating techniques such as fluid bed or Wurster coaters, orAttorney Docket No. 01183-0339-00PCT-PRN spray or pan coating are employed to apply coatings. The coating thickness must be sufficient to ensure that the oral dosage form remains intact until the desired site of topical delivery in the intestinal tract is reached.

[0342] Colorants, surfactants, anti-adhesion agents, antifoaming agents, lubricants (e.g., carnauba wax or PEG) and other additives may be added to the coatings besides plasticizers to solubilize or disperse the coating material, and to improve coating performance and the coated product.

[0343] To accelerate the dissolution of the enteric coat, a half-thickness, double coat of enteric polymer (for instance, Eudragit L30 D-55) may be applied, and the inner enteric coat may have a buffer up to pH 6.0 in the presence of 10% citric acid, followed by a final layer of standard Eudragit L 30 D-55. Applying two layers of enteric coat, each half the thickness of a typical enteric coat, Liu and Basit were able to accelerate enteric coating dissolution compared to a similar coating system applied, unbuffered, as a single layer (Liu, F. and Basit, A. Journal of Controlled Release. 147 (2010) 242-245.)

[0344] The intactness of the enteric coating may be measured, for example, by the degradation of the drug within the micropellets. The enteric coated dosage forms or pellets may be tested in dissolution testing first in gastric fluid and separately in intestinal fluid as described in USP to determine its function.

[0345] The enteric coated tablets and capsules formulation containing the disclosed compounds can be made by methods well known in the art. For example, tablets containing a compound disclosed herein can be enterically coated with a coating solution containing Eudragit®, diethylphthlate, isopropyl alcohol, talc, and water using a side vented coating pan (Freund Hi- Coater).

[0346] Alternatively, a multi-unit dosage form comprising enteric -coated pellets that can be incorporated into a tablet or into a capsule can be prepared as follows.

[0347] Core material: The core material for the individually enteric coating layered pellets can be constituted according to different principles. Seeds layered with the active agent ( e., tolebrutinib or a pharmaceutically acceptable sale thereof), optionally mixed with alkaline substances or buffer, can be used as the core material for the further processing. The seeds which are to be layered with the active agent can be water insoluble seeds comprising different oxides, celluloses, organic polymers, and other materials, alone or in mixtures or water-soluble seeds comprising different inorganic salts, sugars, non-pareils and other materials, alone or in mixtures.Attorney Docket No. 01183-0339-00PCT-PRN

[0348] Further, the seeds may comprise the active agent in the form of crystals, agglomerates, compacts etc. The size of the seeds is not essential for the present disclosure but may range in size approximately from 0.1 to 2 mm. The seeds layered with the active agent are produced either by powder or solution / suspension layering using for instance granulation or spray coating layering equipment. Before the seeds are layered, active agent may be mixed with further components.

[0349] Such components can be binders, surfactants, fillers, disintegrating agents, alkaline additives or other or pharmaceutically acceptable ingredients alone or in mixtures. The binders are for example polymers such as hydroxypropyl methylcellulose (HPMC), hydroxypropylcellulose (HPC), carboxymethylcellulose sodium, polyvinyl pyrrolidone (PVP), or sugars, starches, or other pharmaceutically acceptable substances with cohesive properties. Suitable surfactants are found in the groups of pharmaceutically acceptable non-ionic or ionic surfactants such as for instance sodium lauryl sulfate.

[0350] Alternatively, the active agent optionally mixed with suitable constituents can be formulated into a core material. Said core material may be produced by extrusion / spheronization, balling or compression utilizing conventional process equipment. The size of the formulated core material is approximately from 0. 1 to 4 mm, and for example, from 0.1 to 2 mm. The manufactured core material can further be layered with additional ingredients comprising the active agent or be used for further processing.

[0351] The active agent is mixed with pharmaceutical constituents to obtain preferred handling and processing properties and a suitable concentration of the active agent in the final preparation. Pharmaceutical constituents such as fillers, binders, lubricants, disintegrating agents, surfactants, and other pharmaceutically acceptable additives may be used.

[0352] Alternatively, the aforementioned core material can be prepared by using spray drying or spray congealing technique.

[0353] Enteric Coating Layer(s): Before applying the enteric coating layer(s) onto the core material in the form of individual pellets, the pellets may optionally be covered with one or more separating layer(s) comprising pharmaceutical excipients optionally including alkaline compounds such as pH-buffering compounds. This / these separating layer(s), separate(s) the core material from the outer layers being enteric coating layer(s). This / these separating layer(s) protecting the core material of active agent should be water soluble or rapidly disintegrating in water.

[0354] A separating layer(s) can be optionally applied to the core material by coating or layering procedures in suitable equipment such as coating pan, coating granulator or in aAttorney Docket No. 01183-0339-00PCT-PRN fluidized bed apparatus using water or organic solvents for the coating process. As an alternative the separating layer(s) can be applied to the core material by using powder coating technique. The materials for the separating layers are pharmaceutically acceptable compounds such as, for instance, sugar, polyethylene glycol, polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl acetate, hydroxypropyl cellulose, methylcellulose, ethylcellulose, hydroxypropyl methyl cellulose, carboxymethylcellulose sodium, water soluble salts of enteric coating polymers and others, used alone or in mixtures. Additives such as plasticizers, colorants, pigments, fillers anti-tacking and anti- static agents, such as for instance magnesium stearate, titanium dioxide, talc and other additives may also be included into the separating layer(s).

[0355] When the optional separating layer is applied to the core material it may constitute a variable thickness. The maximum thickness of the separating layer(s) is normally only limited by processing conditions. The separating layer may serve as a diffusion barrier and may act as a pH- buffering zone. The optionally applied separating layer(s) is not essential for the embodiments of the present disclosure. However, the separating layer(s) may improve the chemical stability of the active substance or the physical properties of the novel multiple unit tableted dosage form.

[0356] Alternatively, the separating layer may be formed in situ by a reaction between an enteric coating polymer layer applied on the core material and an alkaline reacting compound in the core material. Thus, the separating layer formed comprises a water-soluble salt formed between the enteric coating layer polymer(s) and an alkaline reacting compound which is in the position to form a salt.

[0357] One or more enteric coating layers are applied onto the core material or onto the core material covered with separating layer(s) by using a suitable coating technique. The enteric coating layer material may be dispersed or dissolved in either water or in suitable organic solvents. As enteric coating layer polymers, one or more, separately or in combination, of the following can be used, e.g., solutions or dispersions of methacrylic acid copolymers, cellulose acetate phthalate, hydroxypropyl methylcellulose phthalate, hydroxypropyl methylcellulose acetate succinate, polyvinyl acetate phthalate, cellulose acetate trimellitate, carboxymethylethylcellulose, shellac or other suitable enteric coating polymer(s).

[0358] The enteric coating layers contain pharmaceutically acceptable plasticizers to obtain the desired mechanical properties, such as flexibility and hardness of the enteric coating layers. Such plasticizers are for instance, but not restricted to triacetin, citric acid esters, phthalic acid esters, dibutyl sebacate, cetyl alcohol, polyethylene glycols, polysorbates or other plasticizers.Attorney Docket No. 01183-0339-00PCT-PRN

[0359] The amount of plasticizer is optimized for each enteric coating layer formula, in relation to the selected enteric coating layer polymer(s), selected plasticizer(s) and the applied amount of said polymer(s), in such a way that the mechanical properties, i.e., flexibility and hardness of the enteric coating layer(s), for instance exemplified as Vickers hardness, are adjusted so that if a tablet is desired the acid resistance of the pellets covered with enteric coating layer(s) does not decrease significantly during compression of pellets into tablets. The amount of plasticizer is usually above 5% by weight of the enteric coating layer polymer(s), such as 15-50% and further such as 20- 50%. Additives such as dispersants, colorants, pigments polymers e.g., poly(ethylacrylate, methylmethacrylate), anti-tacking and anti-foaming agents may also be included into the enteric coating layer(s). Other compounds may be added to increase film thickness and to decrease diffusion of acidic gastric juices into the acid susceptible material. The maximum thickness of the applied enteric coating is normally only limited by processing conditions and the desired dissolution profile.

[0360] Over-Coating Layer: Pellets covered with enteric coating layer(s) may optionally further be covered with one or more over-coating layer(s). The over-coating layer(s) should be water soluble or rapidly disintegrating in water. The over-coating layer(s) can be applied to the enteric coating layered pellets by coating or layering procedures in suitable equipment such as coating pan, coating granulator or in a fluidized bed apparatus using water or organic solvents for the coating or layering process. The materials for over-coating layers are chosen among pharmaceutically acceptable compounds such as, for instance sugar, polyethylene glycol, polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl acetate, hydroxypropyl cellulose, methylcellulose, ethylcellulose, hydroxypropyl methyl cellulose, carboxymethylcellulose sodium and others, used alone or in mixtures. Additives such as plasticizers, colorants, pigments, fillers, anti-tacking, and anti-static agents, such for instance magnesium stearate, titanium dioxide, talc and other additives may also be included into the over-coating layer(s). The over-coating layer may further prevent potential agglomeration of enteric coating layered pellets, further it may protect the enteric coating layer towards cracking during the compaction process and enhance the tableting process. The maximum thickness of the applied over-coating layer(s) is normally limited by processing conditions and the desired dissolution profile. The over-coating layer may also be used as a tablet film coating layer.

[0361] Enteric coating of soft gelatin capsules may contain an emulsion, oil, microemulsion, self-emulsifying system, lipid, triglycerides, polyethylene glycol, surfactants, other solubilizers and the like, and combinations thereof, to solubilize the active agent. The flexibility of the soft gelatin capsule is maintained by residual water and plasticizer. Moreover,Attorney Docket No. 01183-0339-00PCT-PRN for gelatin capsules the gelatin may be dissolved in water so that spraying must be accomplished at a rate with relatively low relative humidity such as can be accomplished in a fluid bed or Wurster. In addition, drying should be accomplished without removing the residual water or plasticizer causing cracking of the capsule shell. Commercially available blends optimized for enteric coating of soft gelatin capsules such as Instamodel EPD (Enteric Polymeric Dispersion), available from Ideal Cures, Pvt. Ltd. (Mumbai, India). On a laboratory scale enteric coated capsules may be prepared by: a) rotating capsules in a flask or dipping capsules in a solution of the gently heated enteric coating material with plasticizer at the lowest possible temperature or b) in a lab scale sprayer / fluid bed and then drying.

[0362] For aqueous active agents, it can be especially desirable to incorporate the drug in the water phase of an emulsion. Such "water-in-oil" emulsion provides a suitable biophysical environment for the drug and can provide an oil-water interface that can protect the drug from adverse effects of pH or enzymes that can degrade the drug. Additionally, such water-in-oil formulations can provide a lipid layer, which can interact favorably with lipids in cells of the body, and can increase the partition of the formulation onto the membranes of cells. Such partition can increase the absorption of drugs in such formulations into the circulation and therefore can increase the bioavailability of the drug.

[0363] In some embodiments the water-in-oil emulsion contains an oily phase composed of medium or long chain carboxylic acids or esters or alcohols thereof, a surfactant or a surfaceactive agent, and an aqueous phase containing primarily water and the active agent.

[0364] Medium and long chain carboxylic acids are those ranging from C8 to C22 with up to three unsaturated bonds (also branching). Examples of saturated straight chain acids are n- dodecanoic acid, n-tetradecanoic acid, n-hexadecanoic acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, montanic acid and melissic acid. Also useful are unsaturated monoolefinic straight chain monocarboxylic acids.

[0365] Examples of these are oleic acid, gadoleic acid and erucic acid. Also useful are unsaturated (poly olefinic) straight chain monocarboxylic acids. Examples of these are linoleic acid, ricinoleic acid, linolenic acid, arachidonic acid and behenolic acid. Useful branched acids include, for example, diacetyl tartaric acid. Unsaturated olefinic chains may also be hydroxylated or ethoxylated to prevent oxidation or to alter the surface properties.

[0366] Examples of long chain carboxylic acid esters include, but are not limited to, those from the group of: glyceryl monostearates; glyceryl monopalmitates; mixtures of glyceryl monostearate and glyceryl monopalmitate; glyceryl monolinoleate; glyceryl monooleate;Attorney Docket No. 01183-0339-00PCT-PRN mixtures of glyceryl monopalmitate, glyceryl monostearate, glyceryl monooleate and glyceryl monolinoleate; glyceryl monolinolenate; glyceryl monogadoleate; mixtures of glyceryl monopalmitate, glyceryl monostearate, glyceryl monooleate, glyceryl monolinoleate, glyceryl monolinolenate and glyceryl monogadoleate; acetylated glycerides such as distilled acetylated monoglycerides; mixtures of propylene glycol monoesters, distilled monoglycerides, sodium steroyl lactylate and silicon dioxide; d-alpha tocopherol polyethylene glycol 1000 succinate; mixtures of mono- and di-glyceride esters such as Atmul; calcium stearoyl lactylate; ethoxylated mono- and di-glycerides; lactated mono- and di-glycerides; lactylate carboxylic acid ester of glycerol and propylene glycol; lactylic esters of long chain carboxylic acids; polyglycerol esters of long chain carboxylic acids, propylene glycol mono- and di-esters of long chain carboxylic acids; sodium stearoyl lactylate; sorbitan monostearate; sorbitan monooleate; other sorbitan esters of long chain carboxylic acids; succinylated monoglycerides; stearyl monoglyceryl citrate; stearyl heptanoate; cetyl esters of waxes; stearyl octanoate; C8- C30 cholesterol / lavosterol esters; and sucrose long chain carboxylic acid esters.

[0367] Examples of the self-emulsifying long chain carboxylic acid esters include those from the groups of stearates, palmitates, ricinoleates, oleates, behenates, ricinolenates, myristates, laurates, caprylates, and caproates. In some embodiments the oily phase may comprise a combination of 2 or more of the long chain carboxylic acids or esters or alcohols thereof. In some embodiments medium chain surfactants may be used and the oil phase may comprise a mixture of caprylic / capric triglyceride and C8 / C10 mono- / di-glycerides of caprylic acid, glyceryl caprylate or propylene glycol monocaprylate or their mixtures.

[0368] The alcohols that can be used are exemplified by the hydroxyl forms of the carboxylic acids exemplified above and also stearyl alcohol.

[0369] Surface active agents or surfactants are long chain molecules that can accumulate at hydrophilic / hydrophobic (water / oil) interfaces and lower the surface tension at the interface. As a result, they can stabilize an emulsion. In some embodiments, the surfactant may comprise: Tween® (polyoxyethylene sorbate) family of surfactants, Span® (sorbitan long chain carboxylic acid esters) family of surfactants, Pluronic® (ethylene or propylene oxide block copolymers) family of surfactants, Labrasol®, Labrafil® and Labrafac®(each polyglycolyzed glycerides) families of surfactants, sorbitan esters of oleate, stearate, laurate or other long chain carboxylic acids, poloxamers (polyethylene -polypropylene glycol block copolymers or Pluronic®.), other sorbitan or sucrose long chain carboxylic acid esters, mono and diglycerides, PEG derivatives of caprylic / capric triglycerides and mixtures thereof or mixture of two or moreAttorney Docket No. 01183-0339-00PCT-PRN of the above. In some embodiments the surfactant phase may comprise a mixture of Polyoxyethylene (20) sorbitan monooleate (Tween 80®) and sorbitan monooleate (Span 80®).

[0370] The aqueous phase may optionally comprise the active agent suspended in water and a buffer.

[0371] In some embodiments, such emulsions are coarse emulsions, microemulsions and liquid crystal emulsions. In other embodiments such emulsion may optionally comprise a permeation enhancer. In other embodiments, spray-dried dispersions or microparticles or nanoparticles containing encapsulated microemulsion, coarse emulsion or liquid crystal can be used.

[0372] In some embodiments, the solid dosage forms described herein are non-enteric time- delayed release dosage forms. The term "non-enteric time-delayed release" as used herein refers to the delivery so that the release of the drug can be accomplished at some generally predictable location in the intestinal tract more distal to that which would have been accomplished if there had been no delayed release alterations. In some embodiments the method for delay of release is a coating that becomes permeable, dissolves, ruptures, or is no longer intact after a designed duration. The coating in the time-delayed release dosage forms can have a fixed time to erode after which the drug is released (suitable coating include polymeric coating such as HPMC, PEO, and the like) or has a core comprised of a superdisintegrant(s) or osmotic agent(s) or water attractant such as a salt, hydrophilic polymer, typically polyethylene oxide or an alkylcellulose, salts such as sodium chloride, magnesium chloride, sodium acetate, sodium citrate, sugar, such as glucose, lactose, or sucrose, or the like, which draw water through a semi-permeable membrane or a gas generating agent such as citric acid and sodium bicarbonate with or without an acid such as citric acid or any of the aforementioned acids incorporated in dosage forms. The semi-permeable membrane, while mostly not permeable to the drug nor the osmotic agent, is permeable to water that permeates at a near constant rate to enter the dosage form to increase the pressure and ruptures after the swelling pressure exceeds a certain threshold over a desired delay time. The permeability through this membrane of the drug should be less than 1 / 10 than water and in one embodiment less than 1 / 100 the water permeability. Alternatively, a membrane could become porous by leaching an aqueous extractable over a desired delay time.

[0373] Osmotic dosage forms have been described in Theeuwes U.S. Patent No. 3,760,984, and an osmotic bursting dosage form is described in Baker U.S. Patent No. 3,952,741. This osmotic bursting dosage form can provide a single pulse of release or multiple pulses if different devices with different timings are employed. The timing of the osmotic burstAttorney Docket No. 01183-0339-00PCT-PRN may be controlled by the choice of polymer and the thickness or the area of the semipermeable membrane surrounding the core that contains both the drug and the osmotic agent or attractant. As the pressure in the dosage form increase with additional permeated water, the membrane elongates until its breaking point, and then the drug is released. Alternatively, specific areas of rupture can be created in the membrane by having a thinner, weaker area in the membrane or by adding a weaker material to an area of the coating membrane. Some preferred polymers with high water permeabilities that may be used as semipermeable membranes are cellulose acetate, cellulose acetate butyrate, cellulose nitrate, crosslinked polyvinyl, alcohol, polyurethanes, nylon 6, nylon 6.6, and aromatic nylon. Cellulose acetate is an especially preferred polymer.

[0374] In another embodiment, the time-delayed coating that begins its delay to releasing drug after the enteric coating is at least partially dissolved is comprised of hydrophilic, erodible polymers that upon contact with water begin to gradually erode over time. Examples of such polymers include cellulose polymers and their derivatives including, but not limited to, hydroxyalkyl celluloses, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, carboxymethylcellulose, microcrystalline cellulose; polysaccharides and their derivatives; polyalkylene oxides, such as polyethylene oxide or polyethylene glycols, particularly high molecular weight polyethylene glycols; chitosan; poly(vinyl alcohol); xanthan gum; maleic anhydride copolymers; poly(vinyl pyrrolidone); starch and starch-based polymers; maltodextrins; poly (2-ethyl- 2-oxazoline); poly(ethyleneimine); polyurethane; hydrogels; crosslinked polyacrylic acids; and combinations or blends of any of the foregoing.

[0375] Some preferred erodible hydrophilic polymers suitable for forming the erodible coating are poly(ethylene oxide), hydroxypropyl methyl cellulose, and combinations of poly(ethylene oxide) and hydroxypropyl methyl cellulose. Poly(ethylene oxide) is used herein to refer to a linear polymer of unsubstituted ethylene oxide. The molecular weight of the poly(ethylene oxide) polymers can range from about 105Daltons to about 107Daltons. A preferred molecular weight range of poly(ethylene oxide) polymers is from about 2x10sto 2xl06Daltons and is commercially available from The Dow Chemical Company (Midland, Mich.) referred to as SENTRYR POLYOX™ water- soluble resins, NF (National Formulary) grade. When higher molecular weights of polyethylene oxide are used, other hydrophilic agents, such as salts or sugars, like glucose, sucrose, or lactose, that promote erosion or disintegration of this coating, are also included.Attorney Docket No. 01183-0339-00PCT-PRN

[0376] The time-delayed dosage form can be a mechanical pill such as an Enterion® capsule or pH sensitive capsule which can release the drug after a pre-programmed time or when it receives a signal which can be transmitted or once it leaves the stomach.

[0377] The amount of the compound of the disclosure in a formulation can vary within the full range employed by those skilled in the art. Typically, the formulation will contain, on a weight percent (wt %) basis, from about 0.01-99.99 wt % of the BTK inhibitor compound based on the total formulation, with the balance being one or more suitable pharmaceutical excipients. In one embodiment, the compound is present at a level of about 1 -80 wt %.

[0378] The foregoing disclosure has been described in some detail by way of illustration and example, for purposes of clarity and understanding. Therefore, it is to be understood that the above description is intended to be illustrative and not restrictive. The scope of the disclosure should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the following appended claims, along with the full scope of equivalents to which such claims are entitled. Additionally, the attached examples provide exemplary study protocols showing how a clinical study may be implemented.EXAMPLES

[0379] The following examples are provided to illustrate certain disclosed embodiments and are not to be construed as limiting the scope of this disclosure in any way. In the Examples discussed below, the BTK inhibitor, as defined above, may be also referred as “the compound” or “the drug” interchangeably.Example 1 - A Phase 3, randomized, double-blind, efficacy and safety study comparing tolebrutinib to placebo in participants with nonrelapsing secondary progressive multiple sclerosis (HERCULES)

[0380] Overall design: This is a Phase 3, randomized, double-blind, 2-arm, placebo- controlled, parallel group, multicenter, event-driven (6-month CDP) trial with a variable treatment duration ranging from approximately 24 to 48 months in participants with nrSPMS. A graphical scheme of the study design is shown in FIG. 1A. Abbreviations used in FIG. 1A: CDP, confirmed disability progression; EOS, end of study; MRI, magnetic resonance imaging; R, randomization. “Month-1 (D-28 - D-l)” refers to screening period as “Day-28 to Day-1”; “Month 0 (DI)” refers to randomization on Day 1.

[0381] Table 1A shown below describe the schedule of activities during the course of study. Table IB that follows describes the objective and endpoints of the overall study.Attorney Docket No. 01183-0339-00PCT-PRNAttorney Docket No. 01183-0339-00PCT-PRNaPTT, activated partial thromboplastin time; |3-HCG, |3-human chorionic gonadotropin; ALP, alkaline phosphatase; ALT, alanine aminotransferase; AST, aspartate aminotransferase; Chi3Ll, chitinase-3-like protein 1; C-SSRS, Columbia Suicide Severity Rating Scale; D, day; DNA, deoxyribonucleic acid; ECG, electrocardiogram; EDSS, Expanded Disability Status Scale; EOS, end of study; EOT, end of treatment; EQ- 5D-5L, EuroQol 5-dimension 5-level instrument; FSH, follicle stimulation hormone; FUV, follow-up visit; ICF, informed consent form; Ig, immunoglobulin; IRT, interactive response technology; HIV, human immunodeficiency virus; IMP, investigational medicinal product; INR, international normalized ratio; LTS, long term safety study; M, month; MCV, mean corpuscular volume; MCH, mean corpuscular hemoglobin; MRI: magnetic resonance imaging; MS: multiple sclerosis; SDMT, Symbol Digit Modalities Test; CVLT-II, California Verbal Learning Test-II; MSQoL-54: Multiple Sclerosis Quality of Life-54; NfL: neurofilament light chain; pEOT: premature end of treatment; PK: pharmacokinetic; PT: prothrombin time; RBC, red blood cell; SWI, susceptibility weighted imaging; TB, tuberculosis; TIBC: total iron-binding capacity; V: visit; WBC,99Attorney Docket No. 01183-0339-00PCT-PRN white blood cell. Note: All assessments should be done as designated in this SoA unless not permitted according to local regulations. All visit assessments should be performed during the visit window unless otherwise specified in this protocol. a Screening period can range from D-28 to D-l; Randomization visit can be performed only once IMPs are available at site. The interval between screening and randomization visits can range from 11 days (minimum) to 28 days (maximum). However, if required, the randomization visit can be performed earlier than 11 days upon IMP receipt at the site, assuming the participant is eligible for randomization. In case of any delay to screening (MRI rescheduling, lab retests, etc), an additional period of up to 2 weeks is allowed. b From DI to EOS, unscheduled visits may be performed at any time by the Investigator (eg, for evaluation of an adverse event). Assessments may be done on as needed basis to evaluate the participant in accordance with the Investigator’ s best judgement and in-line with the study protocol. At a minimum, a physical examination should be performed, and body temperature and vital signs should be measured. c At the EOS, the participants who have completed treatment with IMP (double blind or open label if meeting CDP) may be offered participation in LTS study. Follow-up visit assessment only performed for those participants who completed treatment and are not willing to take part in the LTS study. For other situations where a follow-up visit is needed, please see Section 7.1 and the Study Manual. d These visits may be done as home health visits (where applicable) or onsite visits (it is preferable that tests are performed at the central laboratory). In any situations where this is not possible (to be documented in source documents), the tests for these visits may be performed at a local laboratory. e If a participant prematurely permanently discontinues treatment with IMP, the participant will undergo pEOT visit as soon as possible. A PK sample should also be collected if the pEOT visit can be scheduled within a maximum 24 hours after the last IMP dose. Participants will then be asked to continue with the study visits as scheduled until the common EOS Visit is reached. During these visits, all study procedures / assessments will be performed except IMP administration and blood sampling for PK and biomarkers (NfL, Chi3Ll, and Ig levels). MRI scans for these participants will only be performed annually (using the next annual visit as the starting point). Additional information is provided in the Study Manual. f For participants continuing in the study, the common EOS visit will be done when the prespecified number of events for 6-month CDPAttorney Docket No. 01183-0339-00PCT-PRN is expected to be reached. The timing and window of this visit will be communicated to sites. g Any disease-modifying therapy for MS taken at any time prior to signing the informed consent needs to be reported in the eCRF; other prior medications will be reported for the period of 6 months prior to signing the ICF. h Complete physical examination due at screening, baseline, yearly (M12, M24, M36, M48) and at EOS; brief physical examination is sufficient for the rest of the visits (complete and brief physical examinations will include neurological examination and collection of the following vital signs: arterial blood pressure, heart rate, temperature). i To be performed at screening for all participants. Tuberculosis examination will be repeated based on clinical judgment, borderline results, or clinical suspicion of TB infection. For further details, refer to E 01. j ECG and 30 second rhythm strips will be obtained locally. k Hematology (platelet count, RBC count, hemoglobin, hematocrit, MCV, MCH, reticulocytes, WBC count with differential: neutrophils, lymphocytes, monocytes, eosinophils, basophils).Biochemistry (blood urea nitrogen [BUN], creatinine, glucose, sodium, potassium, bicarbonate, calcium, liver function tests [AST, ALT, ALP, albumin, total and direct bilirubin], total protein; creatine phosphokinase. Lipase will be tested at the Screening Visit, then quarterly. Monthly visits (Ml, M2, M4, and M5) will include hematology and full liver panel only. Additional safety assessments can be performed if required by local regulations. Such testing shall be performed at local laboratories.Note: a one-time retest at screening may be performed if laboratory test abnormality is considered temporary. Additional safety assessments can be performed if required by local regulations; such testing shall be performed locally whenever possible. Additional visits may be added if required by local regulations. / At intermediate timepoints (W2, W3, W5, W6, W7, W9, W10, W11, M7, M8, MIO, and Ml 1), only liver function tests will be collected (AST, ALT, albumin, alkaline phosphatase, total and direct bilirubin, total protein) and creatine phosphokinase); these can be performed at central laboratory (preferred, as on-site visits or home nursing as applicable for the site) or at local laboratory; a window of ±3 days is permitted for weekly liver function test (LFT) timepoints and ±7 days for the other timepoints. Additional information is provided in the Study Manual. For participants switching to open-label treatment, please refer to Section 6.6.1. m At screening, perform the serum B-hCG pregnancy test at the central laboratory. At randomization and other scheduled visits during theAttorney Docket No. 01183-0339-00PCT-PRN study, urine pregnancy tests should be performed. At randomization, a pregnancy test should be performed prior to the first dose of IMP. Additional serum or urine pregnancy tests may be performed, as determined necessary by the Investigator or required by local regulation, to establish the absence of pregnancy at any time during the participant’s participation in the study. Communication by phone of the result of a pregnancy test performed at home to the site is allowed. n Only in female participants, if needed to establish menopausal status. o The SDMT and CVLT-II will be performed in all participants. If for some reason, CVLT-II is not available at a given site due to reasons such as lack of translation, local certification, etc., then only the SDMT will be assessed for that participant. p A subset of sites that have 3T MRI capacity will perform additional sequences (eg, SWI). Further details will be defined in a central MRI manual. q A visit window of ±21 days is acceptable for MRIs performed after DI. For systemic corticosteroids and adrenocorticotropic hormone, 1 -month wash-out required prior to the MRI scans. The screening MRI scan should be performed as close as possible before the start of IMP. As much as possible, the MRI scan should be performed during the screening period only after it has been established that the participant meets all inclusion and no exclusion criteria. r A noninvasive activity monitor (actigraphy) may be optionally implemented by the Sponsor in a subset of participants during the course of the study if results from pilot assessment demonstrate feasibility. s When available, clinical outcome assessments are to be completed by the participant prior to discussing their health status and prior to study treatment administration or other study related procedures where available per local regulations. f On days of PK sampling, the IMP needs to be taken at the study site after a “regular' meal”. In case a participant forgot IMP at home or took IMP prior to arriving at the site on the day of visits with PK sampling, he / she will be asked to have a repeat assessment within 3 days of the missed PK sampling. A PK assessment shall be done as soon as possible after an overdose or if otherwise specified per protocol u (eg, investigation of abnormal laboratory test values). v M6 and M12: Two samples: one sample between 30 to 90 minutes and one sample between 2.5 to 5 hours after IMP administration. M9: one sample 30-90 minutes after IMP.Attorney Docket No. 01183-0339-00PCT-PRN w Pharmacodynamics and biomarkers samples will be collected only if permitted per local regulations. x DNA testing will be allowed at any time after signature of consent (in case it could not be done for some reason at Day 1). Participation is optional. Participants who do not wish to participate in the genetic research may still participate in the study. A separate consent is required for the genetic analysis component of the study. y This sample will be collected and stored for use if any unexpected safety issue occurs to ensure that a pre-dose baseline value is available for previously not assessed parameters (eg, serology) and for biomarkers research, if agreed. z Additional safety assessments can be performed if required by local regulations; such testing shall be performed locally whenever possible. Additional visits may be added if required by local regulations. Samples for hematology and biochemistry tests on Day 1 (randomization) must be collected prior to administration of the first IMP dose. aa Samples must be shipped within 24 hours. bb Blood sample collection for lymphocyte phenotyping by flow cytometry will be performed in a subset of randomized participants. Participants who did not have a baseline sample collected, will no longer have this test performed; participants who had a baseline sample collected will have a second sample collected at EOT / pEOT.Attorney Docket No. 01183-0339-00PCT-PRN

[0382] Objectives and endpoints for the treatment are shown in Table IB.Table IB - Objectives and endpointsObjectives EndpointsPrimaryTo determine the efficacy of tolebrutinib Time to onset of 6-month CDP defined as compared to placebo in delaying disability follows: progression in nrSPMS - Increase of >1.0 point from the baseline EDSS score when the baseline score is <5.0, OR Increase of >0.5 points when the baseline EDSS score is >5.0SecondaryTo evaluate efficacy of tolebrutinib Time to onset of sustained 20% compared to placebo on clinical endpoints, increase in the 9-hole peg test (9-HPT) MRI lesions, cognitive performance, confirmed over at least 3 months physical function, and quality of life'J JTime to onset orf sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 monthsTime to onset of 3-month CDP as assessed by the EDSS scoreTotal number of new and / or enlarging T2-hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions at all scheduledAttorney Docket No. 01183-0339-00PCT-PRN visits starting after baseline up to and including the end of study (EOS) visitTime to onset of CDI defined as >1.0 point decrease on the EDSS score from baseline confirmed over at least 6 monthsPercent change in brain volume loss (BVL) as detected by brain MRI scans at EOS compared to Month 6Change in cognitive function at the EOS compared to baseline as assessed by SDMTChange in cognitive function at EOS compared to baseline as assessed by CVLT-11, where availableChange in MSQoL-54 questionnaire score from baseline through the EOSTo evaluate safety and tolerability of Adverse events (AEs), serious AEs, tolebrutinib AEs leading to permanent study intervention discontinuation, AEs of special interest, and potentially clinically significant abnormalities in laboratory tests, safety scales, ECG, and vital signs during the study periodTo evaluate population PK of tolebrutinib Plasma concentration of tolebrutinib and relevant metabolite(s) in nrSPMS and (population PK assessment) at Months its relationship to efficacy and safety 6, 9, and 12To evaluate pharmacodynamics of Change in plasma NfL levels at theAttorney Docket No. 01183-0339-00PCT-PRN tolebrutinib EOS compared to baselineChange in lymphocyte phenotype subsets in whole blood at theEOS compared to baseline in a subset of participantsChange in serum immunoglobulin level at the EOS compared to baselineChange in serum Chi3Ll levels at the EOS compared to baselineT ertiary / exploratoryTo evaluate efficacy of tolebrutinib on Time to onset of sustained 20% increase disease progression and activity in in the 9-HPT for at least 6 months nrSPMS, assessed by other clinical andTime to onset of sustained 20% increase imaging measures and by self reported in the T25-FW for at least 6 months assessmentTime to onset of a 4-point decrease in the SDMT, confirmed over at least 3 and 6 monthsThe proportion of participants with CDI confirmed over at least 6 monthsThe proportion of participants with CDI confirmed over at least 6 months and maintained until the EOSChange from baseline to Months 12, 18, and 24 and to the EOS in the EDSS score, T25-FW test, 9-HPT, SDMT, and CVLT-IIAttorney Docket No. 01183-0339-00PCT-PRNChange from baseline to Months 12, 18, and 24 and to the EOS in modified MSFC-3, assessed as the composite of the T25-FW test, 9-HPT, and SDMTProportion of participants with NEDA-3 at Months 18, 24, 30, 36, and the EOSThe annualized adjudicated relapse rate (ARR)Actigraphic analysis of activity counts and indices of change from baseline to the EOS summarized over time (in a subset of participants)Change from baseline of total volume of T2-hyperintense lesions as detected by brain MRI at Months 18, 24, and the EOSTotal number of new Gd-enhancing T1 hyperintense lesions as detected by MRI, defined as the sum of the individual number of new Gd-enhancing Tl- hyperintense lesions at all scheduled visits starting after baseline up to and including the EOS visitChange from baseline by visit in the volume of T1 -hypointense lesions and cumulative number of new T1 hypointense lesionsMTR recovery at EOS in new MTR lesions detected at months 6 and 12 07Attorney Docket No. 01183-0339-00PCT-PRNChange in number of phase rim lesions in SWI MRI from baseline through the EOS (subset of centers with capacity of 3T MRI)Number and volume of slowly evolving lesions (SELs) Normalized T1 (nTl) intensity evolution in SELsTo evaluate the treatment effect of Change in EQ-5D-5L from baseline by tolebrutinib via changes in participants’vlslt over timehealth-related quality of life (HRQoL), and working capacityAbbreviations: 9-HPT, 9-hole peg test; AE, adverse event; AES I, adverse event of special interest; CDI, confirmed disability improvement; CDP, confirmed disability progression; Chi3Ll, chitinase-3-like protein 1; ECG, electrocardiogram; EDSS, Expanded Disability Status Scale; EOS, end of study; MRI, magnetic resonance imaging; MSQoL-54, Multiple Sclerosis Quality of Life-54 Questionnaire; NIL, neurofilament light chain; PD, pharmacodynamic; PK, pharmacokinetic; nrSPMS, non-relapsing secondary progressive multiple sclerosis; T25-FW, timed 25-foot walk.

[0383] General Statistical Analyses Considerations. The baseline values of efficacy parameters are generally defined as the last available value prior to the first dose of study medication unless otherwise specified. For the EDSS, the baseline value will be taken as the average of the screening and randomization visit values. If one of the values is missing, the nonmissing value will be used as baseline. The baseline value of safety parameters is defined as the last available value prior to the first dose of IMP. Unless otherwise indicated, 2-sided p-values and 95% confidence intervals [CI(s)] will be provided for assessment of treatment differences.

[0384] Number of participants:

[0385] Approximately 1700 people will be screened to achieve 1290 participants randomly assigned to study intervention.Attorney Docket No. 01183-0339-00PCT-PRN

[0386] Enrolled participants will be randomly assigned at a ratio of 2:1 to 60 mg (established from dose-finding Study DRI15928) of oral, daily tolcbrutinib or daily matching placebo.

[0387] Randomization will be stratified by age at screening (>40 versus <40 years) and geographic region (US versus non-US).

[0388] Note: “Enrolled” means a participant’s, or their legally acceptable representative’s, agreement to participate in a clinical study following completion of the informed consent process. Potential participants who are screened for the purpose of determining eligibility for the study, but do not participate in the study, are not considered enrolled, unless otherwise specified by the protocol.

[0389] Intervention groups and duration:

[0390] Study intervention(s)

[0391] Investigational medicinal produces )• Formulation: tolebrutinib film coated tablet• Route(s) of administration: oral• Dose regimen: 60 mg once daily

[0392] Investigational medicinal product( s)• Formulation: placebo to match tolebrutinib film coated tablet• Route(s) of administration: oral• Dose regimen: once daily

[0393] Noninvestigational medicinal product(s)• Formulation: MRI contrast-enhancing preparations• Route(s) of administration: intravenous (IV)• Dose regimen: per respective label

[0394] Temporary investigational medicinal product (IMP) interruption due to surgery

[0395] If surgery is needed during the study, consider the benefit-risk of withholding the IMP for at least 3 to 7 days pre- and post-surgery and the risk of bleeding

[0396] The duration of treatment will vary for individual participants, depending on the time of recruitment. With a planned recruitment period of approximately 24 months and an assumed event rate (discussed below), the duration of the study should be approximately 48 months. All recruited participants will be followed in the study until the common study end, which will beAttorney Docket No. 01183-0339-00PCT-PRN estimated and announced by the Sponsor to ensure that approximately 288 events of 6-month CDP have been observed before the study end.

[0397] Statistical considerations:

[0398] Primary endpoint:

[0399] The primary endpoint will be the treatment difference between tolebrutinib and placebo in time to onset of 6 month-CDP regardless of completion of the treatment period. This endpoint corresponds to a “treatment policy strategy”. This endpoint will be considered primary for supporting regulatory decision making.

[0400] The time to onset of 6-month CDP will be analyzed by a Cox proportional hazards model with terms for treatment, age at screening (>40, <40 years) and geographic region (US, nonUS). A log-rank test stratified by age at screening (>40, <40 years) and geographic region (US, non-US) to compare tolebrutinib to placebo will also be examined.

[0401] In this primary ITT analysis:• For participants who complete the study without an initial disability progression or prematurely discontinue the study before 6-month confirmation of an onset of disability progression, the participant’s event time will be censored at the date of last EDSS assessment.• For participants who have an initial onset of disability progression but reach the common study end date prior to 6-month confirmation, the event status of the participant will be determined by an imputation approach. Since in this setting, the partial missing data can reasonably be assumed to be missing at random, this approach leverages the partial information and follows the ITT principle. A logistic model with terms for age at screening (>40, <40 years) and geographic region (US, non-US) will be used to determine the event status as the imputation model within each treatment. A multiple imputation approach will be used to summarize the results.

[0402] Only EDSS assessments measured more than 90 days after the onset of an adjudicated relapse will be used to determine onset of disability progression. In addition, for the purpose of confirmation, only EDSS scores measured more than 90 days after the onset of an adjudicated relapse will be used. In case of such MS relapse, the next quarterly EDSS assessment will be used for CDP confirmation. The minimum increase in score required for progression must also beAttorney Docket No. 01183-0339-00PCT-PRN maintained for any non-confirmatory (ie, intervening) EDSS assessment(s) between the initial (onset) and confirmation EDSS scores.

[0403] Main secondary endpoints:

[0404] For other time-to-event endpoints (time to onset of sustained 20% increase in the 9- HPT, of sustained 20% increase in the T25-FW, of 3-month CDP, and of CDI), similar analysis as for the primary analysis of the primary efficacy endpoint will be performed in the ITT population.

[0405] Continuous endpoints (percent change in brain volume loss, change in cognitive function, change in physical function, and change in MSQoL-54 at EOS) will be analyzed using a mixed-effect model with repeated measures (MMRM) approach. The model will include change / percent change values for the respective endpoint at each scheduled visit as response variables, and treatment, age at screening (>40, <40 years), geographic region (US, non-US), visit, treatment by- visit interaction, baseline value for the endpoint being assessed and baseline value - by-visit interaction as co variates.

[0406] Categorical efficacy endpoints with count data (new and / or enlarging T2 hyperintense over the study period after baseline) will be analyzed using a negative binomial regression model. The model will include the total count occurring during the observation period as the response variable, with treatment group, age at screening (>40, <40 years), and geographic region (US, nonUS) as covariates. Log transformed number of scans will be the offset variable.

[0407] Analysis of safety data:

[0408] All safety summaries will be descriptive; no statistical significance tests will be performed on safety data. This includes treatment-emergent adverse events (TEAEs) and other safety information (eg, clinical laboratory evaluations, electrocardiograms [ECGs], and vital signs). TEAEs are defined as adverse events (AEs) that developed or worsened or became serious during the treatment period. These analyses will be based on the safety population, defined as all participants randomly assigned and exposed to study intervention, regardless of the amount of exposure, analyzed according to the treatment actually received.• There was no death or treatment-emergent adverse event (TEAE) leading to permanent treatment discontinuation during the study. One treatment-emergent serious adverse event (SAE) (MS relapse) was reported in a participant treated with 60 mg tolebrutinib; the remainder of the reported TEAEs were of mild or moderate intensity.• There was no direct correlation between the doses of tolebrutinib administered andAttorney Docket No. 01183-0339-00PCT-PRN number or intensity of TEAEs. The most common events reported in participants in the tolcbrutinib treatment arms were headache, upper respiratory tract infection, and nasopharyngitis.• Two participants had treatment-emergent transient alanine aminotransferase (ALT) increase >3 x ULN, 1 during the 30 mg tolcbrutinib treatment period (at Week 8, 105 U / L [normal range 6 to 34 U / L]) that returned to normal range within 4 days and 1 during the 60 mg tolebrutinib treatment period (at Week 4, 107 U / L [normal range 6 to 34 U / L]). The participant in the 60 mg group had slightly elevated ALT at screening (48 U / L) and at baseline (50 U / L); ALT levels returned to the normal range in 8 weeks. Both participants continued study treatment during this period. All other liver enzyme levels for both participants were within normal ranges during the treatment period; one event was assessed as related and one as unrelated to the study drug by the Investigators. Both participants completed the DRI15928 study and successfully rolled over to the LTS follow-up study.• One event of mild petechia in a female participant (at Week 8 in the tolebrutinib 30 mg group) and 2 events of mild microscopic hematuria in 2 male participants (1 event at Week 16 in the tolebrutinib 30 mg group and 1 event on Day 1 in the tolebrutinib 60 mg group, with occult blood noted in urine) were reported during the treatment period in the tolebrutinib Phase 2b trial. The hematology results were clinically insignificant for all 3 participants from the onset of the events. The participant with mild petechia had benign pigmentary lesions noted during screening, and the event was assessed as related to the study drug by the Investigator. The 2 events of mild microscopic hematuria were assessed as unrelated to the study drug. All 3 events resolved spontaneously.• No severe infections occurred. The most frequently reported (>3 events total) in the tolebrutinib treatment period were upper respiratory tract infection, nasopharyngitis, gastroenteritis, and respiratory tract infection.• No clinically significant cytopenia, including thrombocytopenia and neutropenia, were reported or detected based on hematologic laboratory results, and no clinically significant cardiac arrhythmia was observed via ECG monitoring during the study. An identified risk for tolebrutinib has been identified as follows:• Treatment-emergent SAEs of drug-induced liver injury (DILI) were reported in theAttorney Docket No. 01183-0339-00PCT-PRN ongoing Phase 3 trials; however, all cases occurred between Months 2 to 3 and appear reversible after treatment discontinuation, with potential confoundcrs identified for some of the cases.

[0409] Drug-induced liver injury has been identified in the ongoing Phase 3 trials. The reported events occurred Months 1 to 3 after the start of the IMP, and the elevation of liver enzymes appears reversible after IMP discontinuation. Exclusion criteria and monitoring frequency have been updated in all actively recruiting protocols to mitigate risk of hepatic injury.

[0410] This is a Phase 3, randomized, double-blind, 2-arm, placebo-controlled, parallel group, multicenter, event-driven (6-month CDP) trial with a variable treatment duration ranging from approximately 24 to 48 months in participants with nrSPMS .

[0411] The study will consist of the following study periods:

[0412] Screening period: Day -28 to Day -1.

[0413] Randomization / start of IMP: Eligible participants will be randomly assigned at a 2:1 ratio to receive oral tolebrutinib (60 mg) daily or matching placebo daily.

[0414] Intervention period: Double-blind treatment period for assessment of efficacy and safety up to the EOS as described in the End of Study Definition.

[0415] A month is defined as a period of 28 days by convention.

[0416] Safety follow-up period / EOS: 4 to 8 weeks after the last dose of study treatment (for participants completing IMP treatment [double blind or open-label, if rescued after 6-month CDP] and not entering the LTS study) to collect safety data.

[0417] EOS: A participant is considered to have completed the study if he / she has completed all periods of the study including the EOS Visit, whether remaining on IMP or not.

[0418] Participants with 6-month CDP are eligible for open-label active treatment as rescue (tolebrutinib) (under heading Rescue medicine).

[0419] The duration of the treatment period will vary for individual participants, depending on the time of recruitment and study end as described below. All recruited participants will be followed in the study until approximately 288 events of 6-month CDP are observed. With a planned recruitment period of approximately 24 months and an assumed event rate, the duration of the study should be approximately 48 months, with estimated mean treatment duration of 33 to 36 months.Attorney Docket No. 01183-0339-00PCT-PRN

[0420] Participants will be encouraged to remain in the study and comply with all study visits until the EOS in the case that they discontinue the study intervention early.

[0421] To minimize possible biases in the study outcome, the study is double blinded. The blind of initial treatment will be kept from participants, any Investigator site staff, and the Sponsor until the study end.STUDY POPULATION

[0422] Prospective approval of protocol deviations to recruitment and enrollment criteria, also known as protocol waivers or exemptions, is not permitted.INCLUSION CRITERIA

[0423] Participants are eligible to be included in the study only if all of the following criteria apply as shown in Table 1C:Table 1C - Inclusion CriteriaCategory Criteria101. Participant must be 18 to 60 years of age inclusive, at theAge time of signing the informed consent.102. The participant must have a previous diagnosis of RRMSType of participant in accordance with the 2017 revised McDonald criteria and disease(Thompson et al. Lancet Neurol. 2018, 17, 162-173). characteristics103. The participant must have a current diagnosis of SPMS in accordance with the clinical course criteria (Lublin et al. Neurology 1996 46, 907-911) revised in 2013 (Lublin et al. Neurology 2014, 83, 278-286) and endorsed by an Adjudication Committee.104. The participant must have documented evidence of disability progression observed during the 12 months before screening. Eligibility will be analyzed by an Adjudication Committee (to evaluate source data forAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria disability confirmation).105. Absence of clinical relapses for at least 24 months.106. The participant must have an EDSS score at screening from 3.0 to 6.5 points, inclusive.Weight108. Not applicable.Sex109. Male and / or femaleContraceptive use should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.A) Male participants Not applicable.B) Female participants• A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies:Is not a woman of childbearing potential (WOCBP) OR- Is a WOCBP and agrees to use an acceptable contraceptive method during the intervention period. WOCBP must use reliable means of contraception at a minimum.A WOCBP must have a negative highly sensitive pregnancy test (urine or serum as required by local regulations) at screening and before the first dose ofAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria study intervention.If a urine test cannot be confirmed as negative (eg, an ambiguous result), a serum pregnancy test is required. In such cases, the participant must be excluded from participation if the serum pregnancy result is positive.- Requirements for pregnancy testing during and after study intervention are located in the SoA (Table 1A).• Additional requirements for pregnancy testing during and after study intervention are located in Table IE.• The Investigator is responsible for review of medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a woman with an early undetected pregnancy, if allowed by local regulations.Informed I 10.iscapable of giving signed informedConsent consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF). A specific ICF for legally minor participants must also be signed by the participant’s legally authorized representative.EXCLUSION CRITERIA

[0424] Participants are excluded from the study if any of the following criteria apply as shown in Table ID:Table ID - Exclusion CriteriaCategory CriteriaMedical E 01. The participant has a history of infection or may be at risk conditionsAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria for infection:• A history of T-lymphocyte or T-lymphocyte-receptor vaccination, transplantation (including solid organ, stem cell, and bone marrow transplantation) and / or antirejection therapy.• The participant has received any live (attenuated) vaccine (including but not limited to varicella zoster, oral polio, and nasal influenza) within 2 months before the first treatment visit.• The participant has a lymphocyte count less than the lower limit of normal (LLN) at the Screening Visit.• A history of diagnosis of progressive multifocal leukoencephalopathy (PML) or evidence of findings suggestive of PML on the screening MRI.• A history of infection with human immunodeficiency virus (HIV).• A history of active or latent tuberculosis (TB); TB testing should be performed at screening and again during the study, if clinically indicated and maybe repeated based on clinical judgment, borderline results, or clinical suspicion of TB infection. In case of confirmed active or latent TB the patient can be re- screened after full completion of antituberculosis treatment.NOTE: The Investigator may consult with an infectious disease expert if required, eg, test results are unclear or there is a suspicion of false-positive test results. If the infectious disease expert considers the test results as false-positive and not clinically relevant and confirms that the participant can be enrolled in the trial, the Investigator must document this in theAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria source data and may then randomize the participant.• Persistent chronic or active or recurring system infection that may adversely affect participation or IMP administration in this study, as judged by the Investigator.• Fever within 4 weeks of the Screening Visit (>38°C; however, if due to brief and mild ear, nose, throat viral infection participant may be included based on the Investigator’s judgment).• Participants at risk of developing or having reactivation of hepatitis: results at screening for serological markers for hepatitis B and C indicating acute or chronic infection. See the Study Manual for further details.E 02. The presence of psychiatric disturbance or substance abuse as evidenced by:• A history of any psychiatric disease, behavioral condition, or depression requiring hospitalization within 2 years prior to the Screening Visit.• A documented history of attempted suicide or suicidal ideation of category 4 or5 according to the Columbia Suicide Severity Rating Scale (C-SSRS) baseline / screening version over the 6 months prior to the Screening Visit, OR if in the Investigator's judgment, the participant is at risk for a suicide attempt.• Active alcohol use disorder or a history of alcohol or drug abuse within 1 year prior to the Screening Visit.• Current alcohol intake >2 drinks per day for men and >1 drink per day for women(1 drink = approximately 14 grams of alcohol = 350 mLAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria beer = 140 mL wine = 40 mL of spirits).E 03. The following findings obtained during the Screening Visit considered in the Investigator’s judgment to be clinically significant in the context of this trial:• Any screening laboratory values outside normal limits.• Abnormal ECG.E 04. Conditions that may predispose the participant to excessive bleeding:• A bleeding disorder or known platelet dysfunction at any time prior to the Screening Visit.• A platelet count <150 000 / pL at the Screening Visit.• The participant has had major surgery within 4 weeks prior to the Screening Visit, which could affect the participant’s safety or affect immune response (as judged by the Investigator) or has planned any elective major surgery during the study.• A history of significant bleeding event within 6 months prior to screening, according to the Investigator’s judgment such as, but not limited to cerebral or gastrointestinal bleeding.E 05. Conditions that would adversely affect participation in the study or make the primary efficacy endpoint non-evaluable:• A short life expectancy due to pre-existing health condition(s) as determined by their treating neurologist.• A history or presence of significant other concomitant illness according to the Investigator’s judgment such as, but not limited to cardiovascular (including Stage III or IV cardiac failure according to New York Heart AssociationAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria[NYHA] classification), or renal (ie, undergoing dialysis), neurological, endocrine, gastrointestinal, metabolic, pulmonary, or lymphatic disease that would adversely affect participation in this study.• Acute liver disease, cirrhosis, chronic liver disease (unless considered stable for >6 months).• Confirmed screening ALT >1.5 x upper limit of normal (ULN) OR AST >1.5 x ULN OR alkaline phosphatase >2 x ULN (unless caused by non-liver-related disorder or explained by a stable chronic liver disorder) OR total bilirubin >1.5 x ULN (unless due to Gilbert syndrome or non-liver-related disorder).• At screening, elevated transferrin saturation (>50% in males and >40% in females) and / or with elevated ferritin levels >500 pg / L.• Any malignancy within 5 years prior to the Screening Visit (except for effectively treated carcinoma in situ of the cervix or adequately treated non-metastatic squamous or basal cell carcinoma of the skin) will also be exclusionary.• Any other medical condition(s) or concomitant disease(s) making them nonevaluable for the primary efficacy endpoint or that would adversely affect participation in this study, as judged by the Investigator.E 06. A requirement for concomitant treatment that could biasPrior / concomitant the primary evaluation, such as any of the following therapy medications / treatments within the specified time frame before any randomization assessment (no wash out is required for dimethyl fumarate, interferon beta orAttorney Docket No. 01183-0339-00PCT-PRNCategory Criteria glatiramer acetate treatments although use is not permitted on or after Day 1):Attorney Docket No. 01183-0339-00PCT-PRNCategory CriteriaIV: intravenous, MRI: magnetic resonance imaging, MS: multiple sclerosis, PML: progressive multifocal leukoencephalopathy a No time restriction if accelerated elimination procedure is done.E 07. The participant is receiving potent and moderate inducers ofPrior / concurrent CYP3A or potent inhibitors of CYP2C8 hepatic enzymes as clinical study listed in Table II. experienceE 08. The participant is receiving anticoagulant / antiplatclct therapies; those that are not permitted to be taken concomitantly with the IMP, include the following:• Acetylsalicylic acid (aspirin) >81 mg / day.• Antiplatelet drugs (eg, clopidogrel).• Warfarin (vitamin K antagonist).• Heparin, including low molecular weight heparin (antithrombin agents).• Dabigatran (direct thrombin inhibitor).Attorney Docket No. 01183-0339-00PCT-PRNCategory Criteria• Apixaban, edoxaban, rivaroxaban (direct factor Xa inhibitors).Note: All the above-mentioned drugs must be stopped at least 5 half-lives before study drug administration except for aspirin, which must be stopped at least 8 days before. These washout periods are only applicable in the case that the Investigator deems it clinically appropriate to discontinue the listed medications or there is a recent history of use of these medications (as in the case when short-term treatment with anticoagulants is clinically recommended for certain thrombotic events), and therefore these washout periods will need to be followed prior to randomization.If however the participant has a chronic underlying medical condition (stroke, coronary or carotid artery disease, valvular heart disease etc) requiring continued use of these medications, the participant cannot be enrolled in the study.E 09. The participant has sensitivity to any of the study interventions, or components thereof, or has a drug or other allergy that, in the opinion of the Investigator, contraindicates participation in the study.E 10. The participant was previously exposed to any BTK inhibitor, including tolebrutinib.E l l. The participant has taken other investigational drugs within 3 months or 5 half-lives, whichever is longer, before the Screening Visit.Attorney Docket No. 01183-0339-00PCT-PRNCategory CriteriaE 12. The participant has a contraindication for MRI, ie, presenceDiagnostic assessments of pacemaker, metallic implants in high risk areas (ie, artificial heart valves, aneurysm / vessel clips), presence of metallic material (eg, shrapnel) in high risk areas, known history of allergy to any contrast medium, or history of claustrophobia that would prevent completion of all protocol scheduled MRI.Note: People with a contraindication to Gd can be enrolled into the study but cannot receive Gd contrast dyes during their MRI scan.Attorney Docket No. 01183-0339-00PCT-PRNCategory CriteriaE 13. Individuals accommodated in an institution because ofOther exclusions regulatory or legal order; prisoners or participants who are legally institutionalized.E 14. Any country-related specific regulation that would prevent the participant from entering the study.E 15. The participant is not suitable for participation, whatever the reason, as judged by the Investigator, including medical or clinical conditions, or participants potentially at risk of noncompliance to study procedures or not able to follow the schedule of protocol assessments due to other reasons.E 16. Participants are employees of the clinical study site or other individuals directly involved in the conduct of the study, or immediate family members of such individuals (in conjunction with Section 1.61 of the International Council for Harmonisation [ICH] - Good Clinical Practice [GCP] Ordinance E6).E 17. Any other situation during study implementation / course that may raise ethics considerations. Note: a one-time retest at screening may be performed if an abnormal laboratory test value is considered temporary.LIFESTYLE CONSIDERATIONS

[0425] Meals and dietary restrictions: tolebrutinib shall be taken with a regular meal. When possible, the meal with which tolebrutinib is taken (eg, breakfast, lunch, or dinner) should be consistent throughout the study. The typical meal with which the IMP is taken will be recorded atAttorney Docket No. 01183-0339-00PCT-PRN each visit. In case the mealtime needs to be changed for IMP administration, a gap of a minimum of 12 hours between 2 doses should be maintained.

[0426] Caffeine, alcohol, and tobacco: For each visit with PK / PD assessment (refer to Table 1A), participants will abstain from ingesting caffeine- or xanthine-containing products (eg, coffee, tea, cola drinks, and chocolate) for 2 hours before the start of treatment until after collection of the final PK and / or PD sample later that day.

[0427] For each visit with PK / PD assessment (refer to Table 1A), participants will abstain from alcohol for 24 hours before the start of treatment until after collection of the final PK and / or PD sample later that day.

[0428] During the entire study, participants should be warned not to consume substantial quantities of alcohol, defined as >14 grams (1 standard drink) per day in female participants or >28 grams (2 standard drinks) per day in male participants on a regular basis.STUDY INTERVENTION

[0429] Study intervention is defined as any investigational intervention(s), marketed product(s), or placebo intended to be administered to a study participant according to the study protocol.CRITERIA FOR TEMPORARILY DELAYING ENROLLMENT AND ADMINISTRATION OF STUDY INTERVENTION

[0430] During a regional or national emergency declared by a governmental agency, if the site is unable to adequately follow protocol mandated procedures, contingency measures should be considered for screening, enrollment, randomization, and administration of the study intervention.Table IE - Overview of study interventions administeredAttorney Docket No. 01183-0339-00PCT-PRNIMP: investigational medicinal product; NIMP: noninvestigational medicinal product.

[0431] Between the protocol- scheduled on-site visits, interim visits may be required for IMP dispensing. As an alternative to these visits or to replace on-site IMP dispensation, if needed, tolebrutinib may be supplied from the site to the participant via a Sponsor- pproved courier company (direct-to-patient [DTP]) where allowed by local regulations and approved by the Sponsor.

[0432] Noninvestigational medicinal product

[0433] MRI contrast-enhancing preparations• Route(s) of administration: IV• Dose regimen: as per respective labelCONCOMITANT THERAPY

[0434] Any medication or vaccine (including over-the-counter or prescription medicines, vitamins, and / or herbal supplements) that the pa...

Claims

Attorney Docket No. 01183-0339-00PCT-PRNCLAIMSWhat is claimed is:

1. A method of treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs:(a) the risk of confirmed disability progression (CDP) is reduced;(b) the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced;(c) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months is reduced; and(d) the chance of confirmed disability improvement (CDI) is improved.

2. A method of treating a patient with non-rclapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) is reduced.

3. The method of claim 2, wherein the CDP is measured over at least three months, such as at least six months.

4. The method of claim 2 or 3, wherein the confirmed disability progression (CDP) comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0.

5. The method of any one of claims 1-4, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

6. A method of reducing the risk of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof,Attorney Docket No. 01183-0339-00PCT-PRN comprising administering to the patient in need thereof a therapeutically effective amount of tolcbrutinib or pharmaceutically acceptable salt thereof.

7. The method of claim 6, wherein the CDP is measured over at least three months, such as at least six months.

8. The method of claim 6 or 7, wherein confirmed disability progression (CDP) comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0.

9. The method of any one of claims 6-8, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

10. The method of any one of claims 6-9, wherein the risk reduction is relative to placebo.

11. A method of reducing the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

12. The method of claim 11, wherein reducing comprises reducing the annualized rate of new and / or enlarging T2 -hyperin tense lesions.

13. The method of claim 11 or 12, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

14. The method of claim 12, wherein the annualized rate is reduced relative to placebo.

15. A method of reducing the risk of sustained 20% increase in the timed 25-foot walk (T25- FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.Attorney Docket No. 01183-0339-00PCT-PRN16. The method of claim 15, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

17. The method of claim 15 or 16, wherein the risk reduction is relative to placebo.

18. A method of reducing the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

19. The method of claim 18, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

20. The method of claim 18 or 19, wherein the risk reduction is relative to placebo.

21. A method of improving the chance of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

22. The method of claim 21, wherein the CDI is measured over at least three months, such as at least six months.

23. The method of claim 22, wherein the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS).

24. The method of claim 22 or 23, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

25. The method of any one of claims 22-24, wherein the chance is improved relative toAttorney Docket No. 01183-0339-00PCT-PRN placebo.

26. A method of improving time to onset of confirmed disability progression (CDP) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

27. The method of claim 26, wherein the CDP is measured over at least three months, such as at least six months.

28. The method of claim 26 or 27, wherein the confirmed disability progression (CDP) comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0.

29. The method of any one of claims 26-28, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

30. A method of improving time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

31. The method of claim 30, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

32. A method of improving time to onset of sustained 20% increase in the 9-hole peg test (9- HPT) confirmed over at least 3 months, in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib orAttorney Docket No. 01183-0339-00PCT-PRN pharmaceutically acceptable salt thereof.

33. The method of claim 32, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

34. A method of improving time to onset of confirmed disability improvement (CDI) in a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

35. The method of claim 34, wherein the time to onset of CDI is measured over at least three months, such as at least six months.

36. The method of claim 34 or 35, wherein the confirmed disability improvement (CDI) comprises decreasing at least 1.0 point from a baseline expanded disability status scale score (EDSS).

37. The method of any one of claims 34-36, wherein the patient with nrSPMS has:(a) a SPMS diagnosis with an expanded disability status scale score (EDSS) between 3.0 and 6.5;(b) no clinical relapse in the previous 24 months; and(c) disability accumulation in the previous 12 months.

38. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS) in the method of any one of claims 1-5.

39. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP) in the method of any one of claims 6-10.

40. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the total number of new and / or enlarging T2-hyperintense lesions as detected by MRI in the method of any one of claimsAttorney Docket No. 01183-0339-00PCT-PRN1 1-14.

41. Tolcbrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolcbrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in the method of any one of claims 15-17.

42. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in the method of any one of claims 18-20.

43. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves the chance of confirmed disability improvement (CDI) in the method of any one of claims 21-25.

44. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP) in the method of any one of claims 26-29.

45. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the timed 25-foot walk (T25-FW) test confirmed over at least 3 months in the method of any one of claims 30-31.

46. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of sustained 20% increase in the 9-hole peg test (9-HPT) confirmed over at least 3 months in the method of any one of claims 32-33.

47. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with non-relapsing secondary progressive multiple sclerosis (nrSPMS), wherein tolebrutinib orAttorney Docket No. 01183-0339-00PCT-PRN a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability improvement (CDI) in the method of any one of claims 34-37.

48. A method of reducing the risk of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

49. The method of claim 48, wherein the CDW is measured over at least three months, such as at least six months.

50. The method of claim 48 or 49, wherein CDW comprises:(a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0;(b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or(c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

51. The method of any one of claims 48-50, wherein the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 prior to initial administration of tolebrutinib, and one or more of the following:(a) one or more documented relapses in the previous year;(b) two or more documented relapses in the previous 2 years; and(c) one or more Gd-enhancing lesions on an MRI scan in the previous year.

52. The method of any one of claims 48-51, wherein the risk reduction is relative to treatment with teriflunomide.

53. A method of improving time to onset of confirmed disability worsening (CDW) in a patient with a relapsing form of multiple sclerosis (RMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

54. The method of claim 53, wherein the CDW is measured over at least three months, such as at least six months.

55. The method of claim 53 or 54, wherein CDW comprises:(a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0;Attorney Docket No. 01183-0339-00PCT-PRN(b) increasing at least 1 .0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or(c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

56. The method of any one of claims 53-55, wherein the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 at the first visit, and one or more of the following:(a) one or more documented relapses in the previous year;(b) two or more documented relapses in the previous 2 years; and(c) one or more Gd-enhancing lesions on an MRI scan in the previous year.

57. A method of improving percent change in brain volume loss (BVL) as detected by brain MRI in a patient with relapsing forms of multiple sclerosis (RMS), comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

58. The method of claim 57, wherein the patient has an RMS diagnosis with an EDSS less than or equal to 5.5 at the first visit, and one or more of the following:(a) one or more documented relapses in the previous year;(b) two or more documented relapses in the previous 2 years; and(c) one or more Gd-enhancing lesions on an MRI scan in the previous year.

59. The method of claim 57 or 58, wherein the percent change BVL improvement is relative to treatment with teriflunomide.

60. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability worsening (CDW) in the method of any one of clams 48-52.

61. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces improves time to onset of confirmed disability worsening (CDW) in the method of any one of clams 53-56.

62. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with a relapsing form of multiple sclerosis (RMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces improves percent change in brain volume loss (BVL) as detected by brain MRI in the method of any one of clams 57-59.Attorney Docket No. 01183-0339-00PCT-PRN63. A method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein at least one outcome chosen from the following occurs:(a) the risk of composite confirmed disability progression (cCDP) is reduced, wherein the cCDP comprises progression in at least one of confirmed disability progression (CDP), sustained 20% increase in the timed 25-foot walk (T25-FW) test, and sustained 20% increase in the 9-hole peg test (9-HPT);(b) the risk of confirmed disability progression (CDP) is reduced;(c) the total number of new and / or enlarging T2 -hyperintense lesions as detected by MRI, defined as the sum of the individual number of new and / or enlarging T2 lesions, are reduced;(d) the risk of sustained 20% increase in the timed 25-foot walk (T25-FW) test is reduced;(e) the risk of sustained 20% increase in the 9-hole peg test (9-HPT) is reduced;(f) the chance of confirmed disability improvement (CDI) is improved; and(g) the percent change in brain volume loss (BVL) as detected by brain MRI is improved.

64. A method of treating a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) is reduced, wherein the cCDP comprises progression in at least one of:(a) CDP;(b) sustained 20% increase in the timed 25-foot walk (T25-FW) test; and(c) sustained 20% increase in the 9-hole peg test (9-HPT).

65. The method of claim 63 or 64, wherein the CDP, cCDP, sustained 20% increase in the timed 25-foot walk (T25-FW) test, or sustained 20% increase in the 9-hole peg test (9- HPT) is measured over at least three months, such as at least six months.

66. The method of claim any one of claims 63-65, wherein the CDP comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scaleAttorney Docket No. 01183-0339-00PCT-PRN score (EDSS) when the baseline score is less than or equal to 5.5; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

67. The method of any one of claims 63-66, wherein the patient with PPMS has:(a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and(b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index.

68. A method of reducing the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof, wherein the cCDP comprises progression in at least one of:(a) CDP;(b) sustained 20% increase in the timed 25-foot walk (T25-FW) test; and(c) sustained 20% increase in the 9-hole peg test (9-HPT).

69. The method of claim 68, wherein the CDP or cCDP is measured over at least three months, such as at least six months.

70. The method of claim 68 or 69, wherein confirmed disability progression (CDP) comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.5; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

71. The method of any one of claims 68-70, wherein the patient with PPMS has:(a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and(b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index.

72. The method of any one of claims 68-71, wherein the risk reduction is relative to placebo.

73. A method of improving time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in a patient with primary progressive multiple sclerosis (PPMS) in need thereof, comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptableAttorney Docket No. 01183-0339-00PCT-PRN salt thereof, wherein the cCDP comprises progression in at least one of:(a) CDP;(b) sustained 20% increase in the timed 25-foot walk (T25-FW) test; and(c) sustained 20% increase in the 9-hole peg test (9-HPT).

74. The method of claim 73, wherein the CDP or cCDP is measured over at least three months, such as at least six months.

75. The method of claim 73 or 74, wherein the CDP comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.5; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.

76. The method of any one of claims 23-25, wherein the patient with PPMS has:(a) a PPMS diagnosis with an expanded disability status scale score (EDSS) between 2.0 and 6.5; and(b) a cerebrospinal fluid (CSF) analysis that is positive for isoelectric focusing evidence of oligoclonal bands or elevated IgG index.

77. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS) in the method of any one of claims 63-67.

78. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof reduces the risk of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in the method of any one of claims 68-72.

79. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating a patient with primary progressive multiple sclerosis (PPMS), wherein tolebrutinib or a pharmaceutically acceptable salt thereof improves time to onset of confirmed disability progression (CDP) or composite confirmed disability progression (cCDP) in the method of any one of claims 73-76.

80. A method of treating disability accumulation in a patient with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof.

81. A method of treating disability progression independent of relapse activity in a patientAttorney Docket No. 01183-0339-00PCT-PRN with multiple sclerosis comprising administering to the patient in need thereof a therapeutically effective amount of tolcbrutinib or pharmaceutically acceptable salt thereof.

82. The method of claim 80 or 81, wherein treating disability accumulation or disability progression independent of relapse activity comprises at least one of:(a) reducing the risk of disability accumulation in the patient in need thereof;(b) delaying disability accumulation in the patient in need thereof; or(c) improving time to onset of disability accumulation in the patient in need thereof.

83. The method of any one of claims 80-82, wherein the disability accumulation or disability progression independent of relapse activity is confirmed disability accumulation (CDA).

84. The method of claim 83, wherein the confirmed disability accumulation (CDA) is confirmed disability progression (CDP).

85. The method of claim 83, wherein the confirmed disability accumulation (CDA) is confirmed disability worsening (CDW).

86. The method of claim 83, wherein the confirmed disability accumulation (CDA) is a composite confirmed disability accumulation (cCDA) comprising progression in one or more of:(a) CDW or CDP;(b) sustained 20% increase in the timed 25 -foot walk test (T25-FW); and(c) sustained 20% increase in the 9-hole peg test (9-HPT).

87. The method of claim 84 or 86, wherein the CDP comprises:(a) increasing at least 1.0 point from a baseline expanded disability status scale score (EDSS) when the baseline score is less than or equal to 5.0; or(b) increasing at least 0.5 points when the baseline EDSS score is greater than 5.0.

88. The method of claim 85 or 86, wherein the CDW comprises:(a) increasing at least 1.5 point from a baseline expanded disability status scale score (EDSS) when the baseline score is 0;(b) increasing at least 1.0 point from the baseline EDSS when the baseline score is greater than or equal to 0.5 and less than or equal to 5.5; or(c) increasing at least 0.5 points when the baseline EDSS score is greater than 5.5.Attorney Docket No. 01183-0339-00PCT-PRN89. The method of any one of claims 83-88, wherein the CDA or cCDA is measured over at least 3 months, such as at least 6 months.

90. The method of any one of claims 80-90, wherein the patient in need thereof has secondary progressive multiple sclerosis (SPMS).

91. The method of claim 91, wherein the SPMS is non-relapsing secondary progressive multiple sclerosis (nrSPMS).

92. The method of claim 91, wherein the SPMS is relapsing secondary progressive multiple sclerosis (R-SPMS).

93. The method of any one of claims 80-89, wherein the patient in need thereof has a relapsing form of multiple sclerosis (RMS).

94. The method of any one of claims 80-89, wherein the patient in need thereof has primary progressive multiple sclerosis (PPMS).

95. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating disability accumulation in a patient with multiple sclerosis in the method of any one of claims 80 or 82-94.

96. Tolebrutinib or a pharmaceutically acceptable salt thereof for use in treating disability progression independent of relapse activity in a patient with multiple sclerosis in the method of any one of claims 81-94.

97. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-5 or 38, wherein one or more of the reduction in risk of CDP, reduction in total number of new and / or enlarging T2-hyperintense lesions, reduction in risk of sustained 20% increase in T25-FW test, or the improvement of chance of CDI is relative to placebo.

98. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 26-37 or 44-47, wherein the time to onset is improved relative to placebo.

99. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 53-56 or 61, wherein the time to onset is improved relative to treatment with teriflunomide.

100. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 63-67 or 77-78, wherein one or more of the reduction in risk of CDP or cCDP, the reduction in total number of new and / or enlarging T2-hyperintense lesions, theAttorney Docket No. 01183-0339-00PCT-PRN reduction in risk of sustained 20% increase in T25-FW test, the reduction in risk of sustained 20% increase in the 9-holc peg test (9-HPT), the improvement of chance of CDI, or the improvement percent change in BVL is relative to placebo.

101. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 73-76 or 79, wherein the time to onset is improved relative to placebo.

102. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 82-96, wherein one or more of the reduction of risk, delay, or improvement of time to onset of disability accumulation is relative to placebo.

103. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 82-96, wherein one or more of the reduction of risk, delay, or improvement of time to onset of disability accumulation is relative to treatment with teriflunomide.

104. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof has one or more Gd- enhancing T1 -hyperintense lesions as detected by MRI before administration of tolebrutinib.

105. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof:(a) has no Gd-enhancing T1 -hyperintense lesions as detected by MRI before administration of tolebrutinib; and(b) had no relapse in the 2 years before administration of tolebrutinib.

106. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof has an EDSS score of 4.5 or less before administration of tolebrutinib.

107. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof has an EDSS score of 5.5 or less before administration of tolebrutinib.

108. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof has received 1 or fewer disease modifying therapies for multiple sclerosis before administration of tolebrutinib.

109. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, ofAttorney Docket No. 01183-0339-00PCT-PRN claim 108, wherein the patient in need thereof has not received a disease modifying therapy before administration of tolcbrutinib.

110. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of claim 108, wherein the patient in need thereof has received one prior disease modifying therapy selected from the group consisting of an interferon, glatiramer acetate, dimethyl fumarate, ocrelizumab, teriflunomide, natalizumab, fingolimod, and rituximab.

111. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-47, 80-98, or 102, wherein the patient in need thereof had onset of RMS symptoms 10 years or less before administration of tolebrutinib, such as 5 years or less before administration of tolebrutinib or more than 5 and 10 years or less before administration of tolebrutinib.

112. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 48-62, 80-96, 99, or 103, wherein the patient in need thereof has an EDSS score of less than 4 before administration of tolebrutinib.

113. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 48-62, 80-96, 99, or 103, wherein the patient in need thereof has one or more Gd-enhancing T1 -hyperintense lesions as detected by MRI before administration of tolebrutinib.

114. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 48-62, 80-96, 99, or 103, wherein the patient in need thereof has not received a disease modifying therapy multiple sclerosis before administration of tolebrutinib.

115. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 48-62, 80-96, 99, or 103, wherein the patient in need thereof had onset of RMS symptoms less than 10 years before administration of tolebrutinib, such as less than 5 years before administration of tolebrutinib or 5 or more and less than 10 years before administration of tolebrutinib.

116. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 48-62, 80-96, 99, or 103, wherein the patient in need thereof had 2 or more relapses in the one year before administration of tolebrutinib.

117. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of anyAttorney Docket No. 01183-0339-00PCT-PRN one of claims 1-62 or 80-99, or 102-103, wherein the patient in need thereof has one or more phase rim lesion (PRL) as detected by MRI before administration of tolcbrutinib.

118. The method, or tolcbrutinib or pharmaceutically acceptable salt thereof for use, of claim 117, wherein the patient in need thereof has one, two, or three phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib.

119. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of claim 117, wherein the patient in need thereof has four or more phase rim lesions (PRL) as detected by MRI before administration of tolebrutinib.

120. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-119, wherein the patient in need thereof is an adult with multiple sclerosis.

121. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-120, wherein the therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof is about 5 mg to about 60 mg, measured in base form.

122. The method, or tolebrutinib or pharmaceutically acceptable salt thereof for use, of any one of claims 1-120, wherein the therapeutically effective amount of tolebrutinib or pharmaceutically acceptable salt thereof is 60 mg, measured in base form.

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