G1T38 superior dosage regimes

Abstract

A GIT38 human oral dosage regime that provides a (mean AUC(0-24),ss (h*ng / mL)) / (dose (mg)) ratio of less than 5 and / or a (mean AUC(0-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of closing of not greater than 1.25. 20 24 20 50 55 24 J ul 2 02 4 A B S T R A C T 2 0 2 4 2 0 5 0 5 5 2 4 J u l 2 0 2 4

Description

CROSS-REFERENCE IX) RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 62 / 614,952, filed January 8, 2018, U.S. Provisional Application No. 62 / 679,575, filed June 1, 2018, and U.S. Provisional Application No. 62 / 788,017, filed January' 3, 2019. The entirety of these applications are hereby incorporated by reference herein for all purposes. FIELD OF THE INVENTION This invention is an advantageous dosage regime for administration of the selective CDK 4 / 6 inhibitor known as G1T38, which is 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9'-pyrazino[r,2': l,5]pyrrolo[2,3-d]pyrimidin]-6'-one, based on human clinical trials. 15                         BACKGROUND The regulation of the cell cycle is governed and controlled by specific proteins, which are activated and deactivated mainly through phosphorylation / dephosphorylation processes in a precisely timed manner. The key proteins that coordinate the initiation, progression, and completion of cell-cycle program are cyclin dependent kinases (CDKs). Cyclin-dependent kinases 20 belong to the serine-threonine protein kinase family. They are heterodimeric complexes composed of a catalytic kinase subunit and a regulatory cyclin subunit. CDK activity is controlled by association with their corresponding regulatory7 subunits (cyclins) and CDK inhibitor proteins (Cip & Kip proteins, INK4s), by their phosphorylation state, and by ubiquitin-mediated proteolytic degradation (see D.G. Johnson, C.L. Walker, Annu. Rev. Pharmacol. Toxicol 39 (1999) 295-312; 25 D.O. Morgan, Annu. Rev. Cell Dev. Biol. 13 (1997) 261-291; C.J. Sherr, Science 274 (1996) 1672-1677, T. Shimamura et al., Bioorg. Med. Chern. Lett. 16 (2006) 3751-3754). There are four CDKs that are significantly involved in cellular proliferation: CDK1, which predominantly regulates the transition from G2 to M phase, and CDK2, CDK4, and CDK6, which regulate the transition from G1 to S phase (Malumbres M, Barbacid M, Cell cycle, CDKs and 30 cancer: a changing paradigm. Nat. Rev. Cancer 2009;9(3): 153-166). In early to mid G1 phase, when the cell is responsive to mitogenic stimuli, activation of CDK4-cyclin D and CDK6-cyclin 2024205055 . 24 Jul 2024 D induces phosphorylation of the retinoblastoma protein (pRb). Phosphorylation of pRb releases the transcription factor E2F, which enters the nucleus to activate transcription of other cyclins which promote further progression of the cell cycle (see J. A. Diehl, Cancer Biol. Ther. 1 (2002) 226-231; C.J. Sherr, Cell 73 (1993) 1059-1065). CDK4 and CDK6 are closely related proteins with basically indistinguishable biochemical properties (see M. Malumbres, M. Barbacid, Trends Biochem. Sci. 30 (2005) 630-641). A number of CDK 4 / 6 inhibitors have been identified for use to treat CDK4 / 6 replication dependent cancer. For example, WO 03 / 062236 identifies a series of 2-(pyridin-2-ylamino-pyrido[2,3]pyrimidin-7-ones for the treatment of Rb positive cancers that show selectivity for CDK4 / 6, including 6-acetyl-8-cyclopentyl-5-methyl-2-(5-piperazin-l-yl-pyridin-2-ylammino)-8H-pyrido-[2,3-d]-pyrimidin-7-one (IBRANCE / palbociclib: Pfizer). The clinical trial studies have reported rates of Grade 3 / 4 neutropenia and leukopenia with the use of palbociclib, resulting in 71% of patients requiring a dose interruption and 35% requiring a dose reduction; and adverse events leading to 10% of the discontinuations (see Finn, Abstract SI-6, SABCS 2012). These side 15 effects may be caused by the undesirable pharmacokinetics of palbociclib, which has a relatively long Tv?, of roughly 26.7 hours and a median accumulation ratio of 2.4, resulting in an accumulative concentration build-up of the CDK4 / 6 inhibitor and a persistent quiescence of HPSC replication. Due to these effects, the approved dosing regime for palbociclib requires a 7-day holiday after 21-days of once daily dosing. 20           U.S. Patent No. 7,855,211 is directed to protein kinase inhibitors and includes the chemical structure of 2-pyrimidinamine, N-[5-[(4-ethyl-1 -piperazinyl)methyl]-2-pyridinyl]-5-fluoro-4-[4-fluoro-2-methyl-1-(1 -methyl ethyl)- IH-benzimidazol-6-yl]-  (VERZENIO * M / abemaci clib: Eli Lilly & Co.). Abemaciclib is indicated in combination with fulvestrant for the treatment of women with hormone receptor (HR)-positive, human epidermal growdh factor 2 (HER2)-negative 25 advanced or metastatic breast cancer with disease progression following endocrine therapy and as a monotherapy for the treatment of adult patients with HR-positive, HER2-negative advanced or metastatic breast cancer with disease progression following endocrine therapy and prior chemotherapy in the metastatic setting. The clinical trial studies (MONARCH 1 (monotherapy) and MONARCH 2 (abemaciclib plus fulvestrant)) have reported a significant incidence of 30 diarrhea, as well as neutropenia attributable to abemaciclib. Diarrhea occurred in 86% of patients receiving abemaciclib plus fulvestrant in MONARCH 2 and 90% of patients receiving abemaciclib 2024205055 . 24 Jul 2024 alone in MONARCH 1. Grade 3 diarrhea occurred in 13% of patients receiving abemaciclib plus fulvestrant in MONARCH 2 and in 20% of patients receiving abemaciclib alone in MONARCH I. Neutropenia occurred in 46% of patients receiving abemaciclib plus fulvestrant in MONARCH 2 and 37% of patients receiving abemaciclib alone in MONARCH 1. A Grade >3 decrease in neutrophil count (based on laboratory findings) occurred in 32% of patients receiving abemaciclib plus fulvestrant in MONARCH 2 and in 27% of patients receiving abemaciclib in MON ARCH 1. 22% of patients with diarrhea required dose omission and 22% required a dose reduction. Supportive care was also required. These side effects may be caused by the undesirable pharmacokinetics of abemaciclib, which has a relatively long T1 / 2 of roughly 18.3 hours. The estimated geometric mean accumulation ratio was 2.3 (50% C V) and 3.2 (59% CV) based on Cmax and AUC, respectively, resulting in an accumulative concentration build-up of the CDK4 / 6 inhibitor and a persistent quiescence of HPSC replication. U.S. Patent No. 8,415,355 describes pyrrolopyrimidine compounds and their uses and includes 7-cyclopentyl-N,N-dimethyl-2-((5-(piperazin-l-yl)pyridin-2-yl)amino)-7H-pyrrolo[2,3-15 d]pyrimidine-6-carboxamide (KISQALI1M / ribociclib: Novartis). Ribociclib is indicated in combination with an aromatase inhibitor (letrozole) as initial endocrine-based therapy for the treatment of postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced or metastatic breast cancer. The clinical trial study (MONALEESA-2) has reported that neutropenia was the most frequently reported adverse 20 reaction (AR) (75%), and a grade 3 / 4 decrease in neutrophil count (based on laboratory findings) was reported in 60% of patients receiving ribociclib + letrozole. Dose reductions due to adverse reactions (ARs) occurred in 45% of patients receiving ribociclib plus letrozole. Permanent discontinuations due to ARs were reported in 1% of patients receiving ribociclib plus letrozole. These side effects may be caused by the undesirable pharmacokinetics of ribociclib, which has a 25 relatively long Ti / 2 of roughly 32 hours with a geometric mean accumulation ratio of 2.51 (range: 0.972 to 6.40), resulting in an accumulative concentration build-up of the CDK4 / 6 inhibitor and a persistent quiescence of HPSC replication. Due to these effects, the approved dosing regime for ribociclib requires a 7-day holiday after 21-days of once daily dosing. Recently, G1 Therapeutics, Inc. has identified a selective CDK4 / 6 inhibitor for human 30 clinical use:       2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H- 2024205055   16 Jul 2026 spiro[cyclohexane-1,9'-pyrazino[1',2':1,5]pyrrolo[2,3-d]pyrimidin]-6'-one (G1T38) with the structure While selective CDK4 / 6 inhibitors are generally designed to target CDK4 / 6-replication 5 dependent cancers, the very fact that they inhibit CDK4 / 6 activity may also result in deleterious effects to CDK4 / 6-dependent healthy cells, for example their growth inhibition. CDK4 / 6 activity is necessary for the production of healthy blood cells by the bone marrow, as healthy hematopoietic stem and progenitor cells (HSPCs) require the activity of CDK4 / 6 for proliferation (see Roberts et al. Multiple Roles of Cyclin-Dependent Kinase 4 / 6 Inhibitors in Cancer Therapy. JNCI 10   2012;104(6):476-487). Healthy hematopoietic stem cells give rise to progenitor cells which in turn give rise to all the differentiated components of blood (e.g., lymphocytes, erythrocytes, platelets, granulocytes, monocytes). Healthy hematopoietic cells display a gradient dependency on CDK4 / 6 activity for proliferation during myeloid / erythroid differentiation (see Johnson et al. Mitigation of hematological radiation toxicity in mice through pharmacological quiescence induced by CDK4 / 6 15 inhibition. J Clin. Invest. 2010; 120(7): 2528-2536). Accordingly, the least differentiated cells (e.g., healthy hematopoietic stem cells (HSCs), multi-potent progenitors (MPPs), and common myeloid progenitors (CMP)) appear to be the most dependent on CDK4 / 6 activity for proliferation, and therefore the most deleteriously affected by the use of a CDK4 / 6 inhibitor to treat a CDK4 / 6 replication dependent cancer or other proliferative disorder. 20          Accordingly, there is an ongoing need for improved dosage regimes useful in treating patients with select Rb-positive cancers and abnormal cellular proliferative disorders while minimizing the treatment’s effect on healthy cells such as HSPCs. The present invention provides a guided dosage regime for G1T38 which, in one or mor embodiments, achieves a superior balance during administration of activity and toxicity which is 25 sustainable over an extended period. 2024205055 . 24 Jul 2024 SUMMARY OF THE INVENTION As a result of human clinical trials, a dosage regime has been surprisingly identified that can guide the safe and effective long-term administration of the selective CDK 4 / 6 inhibitor G1T38 or a pharmaceutically acceptable salt thereof in a human. It was not possible to confirm this dosage regime prior to human administration. Thus, it has been determined that: (i) A solid dosage regime of G1T38 for oral deliver}' that provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5; or (ii) A solid dosage regime of G1T38 for oral delivery that provides on Day 22 after first dosing a mean steady state AUC<o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25; provides superior results for the treatment of humans with an Rb-positive neoplastic disorder. 15   These dosage regimes have been identified in Phase Ib / 2a human clinical trials in the United States with the U.S. Food and Drug Administration for the treatment of estrogen positive, HER2-negative breast cancer after endocrine therapy failure. Prior to human clinical studies, preclinical studies in mice were carried out (Bisi, et al., Preclinical development of G1T38: A novel, potent and selective inhibitor of cyclin dependent 20 kinases 4 / 6 for use as an oral antineoplastic in patients with CDK 4 / 6 sensitive tumors,” Oncotarget, March 15, 2017; provided to the U.S. FDA in the Investigational New Drug submission). The Oncotarget article disclosed that in mice, G1T38 concentrates in the tumor after a single dosage of 100 mg / kg. However, given the difference in metabolism, actual mass, and surface area of the mouse and the human, direct correlations with human absorption and 25 compartmentalization are not predictable in advance, even though preclinical data is submitted to and required by the FDA. See also U.S. Patent No. 9,527,857. The rate of drug distribution is determined by blood flow and the rate of diffusion and / or transport to the target cells. Because circulation time and blood flow scale allometrically with increased body size, smaller animals would be expected to distribute drugs to their targets faster. Also, because of the increased blood 30 flow to the liver and kidneys, smaller animals would be expected to eliminate the drugs faster. However, again, the trajectory for different drugs is variable, and the only way to determine 2024205055 . 24 Jul 2024 whether and what a superior dosage regime is for a drug to treat cancer is by administering the drug to humans. The volume of distribution is considered (the total amount of drug in the body) / (drug blood plasma concentration) at time zero. The total amount of drug in the body is the dose for an intravenously (IV) administered drug and the plasma concentration is at time zero. Time zero is the instant after all the drug has been administered. This is most straight forward for IV drugs given rapidly (e.g., over 30-60 seconds). It is significantly more complicated for oral drugs because the amount of drug in the body is unknown unless absolute bioavailability (Fabs or simply F) has been measured. When the drug is given orally, then F remains unknown and Va cannot be determined. This is the expression Va / F where F is an unknown constant. Vd / F is referred to as “apparent volume of distribution.” There are no assumptions made for the value of F. Vd / F is determined using the terminal elimination rate constant (ke), which is derived mathematically from the concentration vs time curve. Once ke is known, a value for the plasma concentration at time zero is extrapolated (because oral drugs are absorbed slowly, plasma concentration at time zero 15   cannot be physically measured). Volume of distribution for oral drugs is always expressed as Vd / F or Vz / F, where “z” indicates that the volume was derived using the terminal elimination rate constant (ke). It has been surprisingly discovered that a dosage regime of the G1T38 can be achieved that exhibits an (AUC(o-24),ss of less than 1200 h*ng / ml), a Cmax less than about 75 ng / mL, and / or a Vd / F 20 of greater than 10,000 L. This is unexpected because the three other commercial selective CDK 4 / 6 inhibitors, palbociclib, ribociclib. and abemaciclib, have significantly lower Vd / F and cannot achieve this dosing regime. The present dosage regime provides surprising efficacy against CDK4 / 6-replication dependent cancers while significantly reducing therapy-limiting side effects such as neutropenia and gastrointestinal complications associated with other CDK4 / 6 inhibitors. 25 This dosage regime for administration in a human are particularly useful in therapeutic regimens for the long-term treatment of, for example, estrogen receptor positive, HER2 negative (ER+ / HER2') breast cancer, prostate cancer, and non-small cell lung carcinoma, while minimizing the effect of CDK4 / 6 inhibitory toxicity on CDK4 / 6 replication dependent healthy cells, such as hematopoietic stem cells and hematopoietic progenitor cells (together referred to as HSPCs), and 30 allow for continuous, daily dosing for extended periods of time, for example greater than 24 months. In one embodiment, G1T38 or its pharmaceutically acceptable salt is orally administered 2024205055   24 Jul 2024 once daily. In one embodiment, G1T38 or its pharmaceutically acceptable salt is orally administered twice daily. In some aspects, the CDK4 / 6 inhibitor administered in an oral dosage regime to a human is 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-5 l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one (G1T38) having the structure (Compound I), or a pharmaceutically acceptable composition, salt or isotopic analog thereof. In one embodiment, G1T38 is administered as a hydrochloride salt of 2!-((5-(4- isopropylpiperazin-l-yl)pyri din-2 -yl)amino)-7',8'-dihydro-6'H-spiro[cy cl ohexane-1,9’- 10 pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6’-one, such as the mono- or dihydrochloride salt. In one embodiment, the compound administered has the structure or a pharmaceutically acceptable composition or isotopic analog thereof. In one embodiment, Compound II is an isolated morphic form referred to herein as Form B. 15          In another embodiment, the CDK4 / 6 inhibitor administered is 2'-((5-(piperazin-l- yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-1,9'-pyrazino[ 12’: 1,5]pyrrolo[2,3 -d]pyrimidin]-6'-one 2024205055   24 Jul 2024 or a pharmaceutically acceptable composition, salt, or isotopic analog thereof. In yet another aspect, an oral dosage regime for administration to a human comprising G1T38, or a pharmaceutical salt thereof, for example Form B of Compound II, provides a mean 5 AUC(o-24).ss (h*ng / mL) of less than about 1000 h*ng / mL. In one embodiment, the mean AUC(o-24),ss (h*ng / mL) is less than about 900 h*ng / mL, 800 h*ng / mL, 700 h*ng / mL, or 600 h*ng / mL. In one embodiment, the mean AUC(o-24),ss (h*ng / mL) is between about 600 h*ng / mL and 1200 h*ng / mL. In one embodiment, the mean AUC(o-24),ss (h*ng / mL) is between about 800 h*ng / mL and 1000 h*ng / mL. In one embodiment, the the mean AUC(o-24),ss (h*ng / mL) is measured for 10 serum Compound I. In one aspect, an oral dosage regime for administration to a human comprises G1T38 or its pharmaceutically acceptable salt, for example Form B of Compound II, that results in an Absolute Neutrophil Count (ANC) of greater than about 1000 cells / mm3 as measured at Day 22 from initial dosing. In one embodiment, the Absolute Neutrophil Count (ANC) is greater than about 800 15 cells / mm3, 1000 cells / mm3, 1200 cells / mm3, 1400 cells / mm3, 1600 cells / mm3, 1800 cells / mm3, or 2000 cells / mm3 as measured at day 22 from initial dosing. In one aspect, an oral dosage regime for administration to a human comprising G1T38 or its pharmaceutically acceptable salt, for example Form B of Compound II, that achieves a mean Cmax (ng / mL) measured at day 29 of dosing of less than about 75 ng / mL. In one embodiment, the 20 mean Cmax (ng / mL) measured at day 29 of dosing of less than about 70 ng / mL. In one embodiment, the mean Cmax (ng / mL) measured at day 29 of dosing of less than about 65 ng / mL. In one embodiment, the Cmax (ng / mL) is measured for serum Compound I. In one aspect, an oral dosage regime for administration to a human comprises G1T38 or its pharmaceutically acceptable salt, for example Form B of Compound n, that achieves a mean Vd / F 25   (L) of greater than about 10,000 L; 11,000 L; 12,000 L; 14,000 L or 15,000 L. In one embodiment, the Vd / F is measured for Compound I. 2024205055 . 24 Jul 2024 In one aspect, an oral dosage regime for administration to a human comprising G1T38 or its pharmaceutically acceptable salt, for example Form B of Compound II, that provides a Dose Normalized AUC(o-24j,ss (mean AUC(o-24),ss (h*ng / mL)) / (dose (mg)) ratio of less than 5. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (dose (mg)) ratio is less than about 4.5, 4, 3.5, 3, 2.5 or 2. In one embodiment, the mean AUC(o-24),ss is measured for serum Compound I. In one aspect, an oral dosage regime for administration to a human comprises G1T38 or its pharmaceutically acceptable salt, for example Form B of Compound II, that achieves a (mean AUC(o-24),ss (h*ng / mL)) / (dose (mg)) ratio of less than 10. In one embodiment, the (mean AUC(o-?4),ss (h*ng / mL)) / (dose (mg)) ratio is less than about 9.5, 9.0, 8.5, 8.0, 7.5, 7.0, 6.5, 6.0, 5.5, 5.0, 4.5, 4.0, 3.5, 3, or 2.5. In one embodiment, the mean AUC(o-24).ss is measured for serum Compound I. In one aspect, an oral dosage regime for administration to a human comprises G1T38 or a pharmaceutically acceptable salt thereof, for example Form B of Compound II, that achieves a (mean A.UC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing 15 of not greater than 1.25. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is not greater than 1.2; 1.1; 1.0; 0.9; 0.8; 0.7; 0.6 or 0.5. In one embodiment, the mean AUC(o-24),ss is measured for serum Compound I. In one embodiment, 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-1,9'-pyrazino[l2': 1,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its 20 pharmaceutically acceptable salt, is provided in an oral dosage regime that is dosed once a day. In one embodiment, 2'-((5-(4-isopropylpiperazin-1 -yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9!-pyrazino[r,2!: l,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its pharmaceutically acceptable salt, is provided in an oral dosage regime that is dosed two times a day, optionally spaced about 12 hours apart. In one embodiment, 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-25 yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its dihydrochloride salt, is provided in an oral dosage regime that is dosed once a day. In one embodiment, 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l ,9'-pyrazino[r,2': 1,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its dihydrochloride salt, is provided in an oral dosage regime that is dosed once a day. 2'-((5-(piperazin-l-yl)pyridin-30 2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its pharmaceutically acceptable salt, is provided in an oral dosage regime 2024205055 . 24 Jul 2024 that is dosed two times a day, optionally spaced about 12 hours apart. 2'-((5-(piperazin-1-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-1,9'-pyrazino[ 12’: 1,5]pyrrolo[2,3 -d]pyrimidin]-6'-one, or its pharmaceutically acceptable salt, is provided in an oral dosage regime that is dosed two times a day, optionally spaced about 12 hours apart. In one embodiment, the oral dosing regime comprises about 200 mg, 300 mg, 400 mg, 500 mg, or 650 mg of Compound II that is dosed once a day. In one embodiment, the oral dosing regime comprises about 100 mg, 150 mg, or 200 mg of Compound II that is dosed twice a day, optionally spaced about 12 hours apart. In one embodiment, Compound II is dosed as isolated morphic Form B. The dosing regime described herein may be dosed continuously, for example at least one time a day for a period of at least, for example, 24 days, 28 days, 35 days, 42 days, 8 weeks, 12 weeks, 16 weeks, 24 weeks, 48 weeks, 12 months, 16 months, 18 months, 24 months or longer. In an aspect of the present invention, the G1T38 oral dosage regime described herein is administered to a subject having a CDK4 / 6-replication dependent cancer so that a blood PK and 15 or PD profile as described herein is maintained in the subject during treatment. In an aspect of the present invention, the G1T38 oral dosage regime described herein is administered to a subject having a CDK4 / 6-replication dependent cancer in combination with an anti-estrogen compound such as selective estrogen receptor modulators (SERMs), selective estrogen receptor downregulators (SERDs), aromatase inhibitors, and luteinizing hormone 20 releasing agents so that a blood PK and or PD profile as described herein is maintained in the subject during treatment. In an aspect of the present invention, the G1T38 oral dosage regime described herein is administered to a subject having a CDK4 / 6-replication dependent cancer selected from Hr+ / HER2- breast cancer, HR- / HER2+ breast cancer, EGFR mutant non-small cell carcinoma, 25 KRAS mutant non small cell lung carcinoma, castrate resistant prostate cancer, mantle cell lymphoma, marginal zone lymphoma, chronic lymphocytic leukemia, follicular lymphoma, diffuse large B-cell lymphoma, BRAE mutant melanoma, Ras mutant colorectal cancer, RAS mutant pancreatic cancer, Ras mutant cholangiocarcinoma, and gastrointestinal stromal tumor (GIST). 30          In an aspect of the present invention, the G1T38 oral dosage regime described herein is administered to a subject having a CDK4 / 6-replication dependent cancer in combination with a 2024205055 . 24 Jul 2024 monoclonal antibody directed to human epidermal growth factor receptor 2 (HER2), a human epidermal growth factor receptor 1 (HER!) and / or human epidermal growth factor receptor 2 (HER2) inhibitor, an epidermal growth factor receptor (EGFR) inhibitor, an anaplastic lymphoma kinase (ALK) inhibitor, an androgen receptor (AR) blocker, a Rapidly Accelerated Fibrosarcoma (RAF) inhibitor, a vascular endothelial growth factor receptor 2 (VEGFR2) and tyrosine-protein kinase receptor (TIE2) inhibitor, a Bruton's tyrosine kinase (BTK) inhibitor, a CYP17 inhibitor, an extracellular signal-regulated kinase (ERK) inhibitor, a gonadotropin releasing hormone superagonist (GnRH agonist), a luteinizing hormone-releasing hormone (LH-RH) agonist, a luteinizing hormone-releasing hormone (LH-RH) antagonist, a mechanistic target of rapamycin (mTOR) inhibitor, a mitogen-activated protein kinase (MEK) inhibitor, a nucleoside or nucleotide analogue or prodrug, a phosphatidylinositol 3-kinase (PI3K) pathway inhibitor, a rapidly accelerated fibrosarcoma (RAF) kinase inhibitor, a renin-angiotensin system (RAS) inhibitor, a selective estrogen receptor degrader (SERD), a selective estrogen receptor modulator (SERM), a serine-threonine protein kinase B (Akt) inhibitor, or a topoisomerase inhibitor. In one 15   embodiment, the one or more additional therapeutic agents are selected from letrazole, anastrozole, fulvestrant, tamoxifen, etoposide, enzalutamide, pictilisib, exemestane, or a combination thereof. BRIEF DESCRIPTION OF THE FIGURES FIG. 1 is a graph of the mean absolute neutrophil count (ANC) in blood samples obtained 20 from cohorts dosed at 200 mg once a day (QD), 100 twice a day (BID), 300 mg QD, 150 mg bid, 400 mg QD, 200 mg BID, 500 mg QD, and 650 QD as measured on selected days of the study (Example 5). Cohorts that were dosed at 200 mg QD and 100 mg BID were combined in the graph. Cohorts that were dosed at 300 QD and 150 mg BID were combined in the graph. Cohorts that were dosed as 400 QD and 200 BID were combined in the graph. The x axis is time measured 25 in days and the y axis is mean ANC measured in 1000 cells / pL. FIG. 2 is a graph of the mean absolute neutrophil count (ANC) percent change for cohorts dosed at 200 mg once a day (QD), 100 mg twice a day (BID), 300 mg QD, 150 mg BID, 400 mg QD, 200 mg BID, 500 mg QD, and 650 mg QD as measured on selected days of the study (Example 5). Cohorts that ’were dosed at 200 mg QD and 100 mg BID ’were combined in the graph. Cohorts 30 that were dosed at 300 QD and 150 mg BID were combined in the graph. Cohorts that were dosed 2024205055 . 24 Jul 2024 as 400 QD and 200 BID were combined in the graph. The x axis is time measured in days and the y axis is ANC change in baseline measured percent. FIG. 3 is a waterfall plot of the best percentage change from baseline for target lesions per patient (Example 6). Each bar is labeled with the dose amount and schedule given to each patient. The x axi s labeled with the dose amount and dose schedule and the y axis is change from baseline measured in percent. FIG. 4 is a spider plot of the percent change from baseline over time for target lesions by patient every' 8 weeks (Example 6). Each line is labeled with the dose amount and schedule given to each patient. The x axis is the time measured in days and the y axis is change from baseline measured in percent. FIG. 5 is a line graph showing the level of BT474 median tumor growth in a murine HER2+ ERT CBX model when treated with vehicle, Compound I (50 mg / kg po qd x 56), lapatinib + trastuzumab, and Compound I + lapatinib + trastuzumab (Example 7). The y axis is tumor volume measured in mmJ. The x axis is time measured in days. 15         FIG. 6 is a line graph showing the percent survival of a murine HER2+ ER+ CBX model when treated with vehicle, Compound I (50 mg / kg po qd x 56), lapatinib + trastuzumab, and Compound I + lapatinib + trastuzumab (Example 7). The y axis is survival measured in percent. The x axis is time measured in days. FIG. 7 is a line graph showing the level of ME-016 mean tumor growth in a murine 20 BRAFmil' melanoma PDX model when treated with vehicle, Compound I (100 mg / kg), dabrafenib (25 mg / kg), trametinib (1 mg / kg), Compound I + dabrafenib, Compound I + trametinib, dabrefmib + trametinib, and Compound I + dabrefmib + trametinib (Example 8). The y axis is tumor volume measured in mmJ. The x axis is time measured in days. FIG. 8 is a line graph showing the percent survival of a murine BRAF1™11 melanoma PDX 25 model when treated with vehicle, Compound I (100 mg / kg), dabrafenib (25 mg / kg), trametinib (1 mg / kg), Compound I + dabrafenib, Compound I + trametinib, dabrefmib + trametinib, and Compound I + dabrefmib + trametinib (Example 8). The y axis is survival measured in percent. The x axis is time measured in days. FIG. 9 is a comparison of XRPD patterns of Form A, Form B, and Form C. These three 30 forms were obtained from crystallization and slurry experiments as described in Examples 9 and 2024205055 . 24 Jul 2024 10 and shown in Tables 98-101. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 10 is a comparison of XRPD patterns of Form D, Form E, and Form F. These three forms were obtained from crystallization and slurry experiments as described in Examples 9 and 10 and shown in Tables 98-101. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 11 is a comparison of XRPD patterns of Form G and Form H. These two forms were obtained from crystallization and slurry experiments as described in Examples 9 and 10 and shown in Tables 98-101. Form G is an anhydrate and Form H is an n-PrOH solvate. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 12A is a dynamic vapor sorption analysis showing the results from a moisture sorption experiment of Form A (Example 11). The material was found to be unstable and the XRPD analysis of dried sample at the conclusion of the experiment revealed a new Form, Form K. Form A adsorbed 14.9 wt% at 60% RH (relative humidity) and 15.8 wt% at 90% RH. The x-axis is 15   relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. FIG. 12B is a dynamic vapor sorption analysis showing the results from a moisture sorption experiment of Form D (Example 11). The material was found to be unstable and the XRPD analysis of dried sample at the conclusion of the experiment revealed a new Form, Form K. Form 20 D adsorbed 4.4 wt% at 60% RH (relative humidity) and 4.4 wt% at 90% RH. The x-axis is relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. FIG. 12C is a dynamic vapor sorption analysis showing the results from a moisture sorption experiment of Form B (Example 11). The material is stable and the XRPD analysis of a dried 25 sample at the conclusion of the experiment confirmed Form B. Form B adsorbed 5.8 wt% at 60% RH (relative humidity), and 5.9 wt% at 90% RH. The x-axis is relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. FIG. 13A is a comparison of XRPD patterns of Form A before the moisture sorption experiment (top) and after the moisture sorption experiment (bottom). After the moisture sorption 30 experiment, XRPD analysis revealed that Form A is not stable and had converted to a new Form, 2024205055 . 24 Jul 2024 Form K (Example 11). The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. I3B is a comparison of XRPD patterns of Form D before the moisture sorption experiment (top) and after the moisture sorption experiment (bottom). After the moisture sorption experiment, XRPD analysis revealed that Form D is not stable and had converted to a new Form, Form K (Example 11). The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 14 is a comparison of the XRPD patterns of Form A, Form B, and Form C after the stability study (Example 12) to reference Form A, Form B and Form C. The top thee patterns are reference forms of Form A, Form B, and Form C. After the seven-day stability study, Form A converted to a new Form (Form A post-study), but after equilibrium at room temperature for 3 days, the new form changed back to Form A (Form A after 3 days). Form B and Form C remained unchanged during the stability' study. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. 15          FIG. 15 is the XRPD pattern for pure Form B. The peaks, marked with bars, are listed in Example 14. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 16 is a comparison of the XRPD patterns of impure Form B material and pure Form B material as characterized in Example 16. Impure Form B material has two peaks at 20 approximately 4.0 and 5.6 degrees that are missing in the pure Form B material. The x-axis is 2Theta measured in degrees and the y-axis is relative intensity as a means to compare the two Form B materials. FIG. 17 is a compari son of impure Form B, Samples 1 and 4 from the slurry experiment described in Example 16, and pure Form B. Pure Form B is the Form B characterized in Example 25   13. A number of experiments were conducted to convert impure Form B to pure Form B material, including a slurry experiment with 1:1 (v / v) 0.1 M HCkacetone (Sample 1) and 1:2 (v / v) 0.5 M HCkacetone (Sample 4). The acidic aqueous acetone mixtures failed to convert impure material to pure material. The XRPD patterns of Sample 1 and 4 were not consistent with the XRPD pattern of pure Form B since a peak at approximately 4.0 degrees was still present. The x-axis is relative 30 humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. 2024205055 . 24 Jul 2024 FIG, 18 is a comparison of impure samples of Form B, Samples 3 and 5 from the slurry experiment described in Example 16, and pure Form B. A number of experiments were conducted to convert impure Form B to pure Form B material, including a slurry experiment with 75:25 (v / v) 0.1 MHCl:acetone (Sample 3) and 50:50 (v / v) 0.5 M HO :acetone (Sample 5). The acidic aqueous acetone mixtures failed to convert impure material to pure material. Pure Form B is the Form B characterized in Example 14. Impure Form B is the material used as starting material in the slurry experiments and impure Form B Sample 2 is a second impure form used as a reference. The x-axis is relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. FIG, 19 is a comparison of impure Form B, Samples 6, 7, and 11 from the slurry experiment described in Example 16, and pure Form B. A number of experiments were conducted to convert impure Form B to pure Form B material, including slurry experiments with 1:2 (v / v) wateracetone that stirred at room temperature. Samples 6, 7, and 1I varied in the concentration of impure Form B and the length of time thatthe samples stirred (details are given in Table 98). All three conditions 15 converted impure Form B to pure Form B since the XRPD patterns from Samples 6, 7, and I I matched the pure Form B XRPD pattern. Pure Form B is the Form B characterized in Example 14 and impure Form B is the material used as staring material in the slurry experiments. The x-axis is relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent, 20          FIG. 20 is a comparison of impure Form B, Samples 12 and 14 from the slurry experiment described in Example 16, and pure Form B. Sluny experiments with 1:3 (v / v) water:acetone (Sample 14) and 1:2 water:acetone followed by additional acetone (Sample 12) were conducted in an effort to improve the yield of the recrystallization process. The XRPD patterns of Samples 12 and 14 were not consistent with the XRPD pattern of Form B since a peak at approximately 4.0 25 degrees was still present. Pure Form B is the Form B characterized in Example 13 and impure Form B is the material used as staring material in the slurry experiments. The x-axis is relative humidity measured as a percent and the y-axis is weight of water of the material measured as a percent. FIG. 21 is a graph from the TG-IR experiment of pure Form B, Sample 11 (Example 16). 30 The TG data showed a 6.4% wt loss at 33-137°C. The x-axis is temperature measured in degrees Celsius and the y-axis is weight of the material measured as a percent. 2024205055 . 24 Jul 2024 FIG, 22 is IR data from the TG-IR experiment of pure Form B, Sample 11 (Example 16), The x-axes are wavenumber measured in cm’1 and time measured in minutes. The y-axis is absorbance. FIG. 23 compares IR spectra of pure Form B, Sample 11 obtained at 2.691 minutes and 5.382 minutes in the TG-IR experiment to IR spectra of water and hydrogen chloride. During the TG-IR experiment, only water, and no hydrogen chloride, was released as a volatile. The x-axis is wavenumber measured in cm’1 and the y-axis is absorbance. FIG. 24 is a comparison of Sample 8 dried in a vacuum oven for 15 hours at approximately 40°C (Example 16, Table 112). The XRPD following the vacuum procedure did not correlate with the XRPD pattern of pure Form B. Dry sample 8 is a new crystalline Form. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 25 are the XRPD patterns of Sample 11 and Sample 23 that were both dried in a vacuum oven, but under different conditions (Example 16, Table 112) compared to the XRPD pattern of pure Form B. Both Sample 11 and 23 exhibited XRPD patterns of Form B. The x-axis 15 is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 26 is a comparison of XRPD patterns from impure Form B, pure Form B, and the material that was converted from impure Form B as described in Example 16. The XRPD pattern of the converted material aligned with the pure Form B material. Pure Form B is the Form B characterized in Example 14 and impure Form B is the material used as staring material in the 20 conversion procedure. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG. 27 is the TGA data from the batch converted to pure Form B material from impure Form B as described in Example 16. The TGA data showed a 7.6% weight loss at 3 l-120°C it also showed an approximately 20% weight loss from I20-350°C. The x-axis is temperature measured 25 in degrees Celsius and the y-axis is weight of the material measured as a percent. FIG. 28 are XRPD patterns of Form I and Form J. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. FIG, 29 is the DSC data from a representative batch of Form B material. The DSC data was collected by increasing the temperature of the sample (3.9 mg) from 25-400°C at a rate of 30 IO :(7mmm.e. Endotherms were observed at 113°C (1), 231°C (2), 262°C (3), and 348°C (4). Endotherm 1 (integral = -237 mJ; normalized = -60 J / g) exhibited an onset of 113°C and an endset 2024205055 . 24 Jul 2024 of 140°C. Endotherm 2 (integral == -182 mJ, normalized == -46 J / g) exhibited an onset of 219°C and an endset of 239°C. Endotherm 3 (integral = 177 mJ; normalized = 45 J / g) exhibited an onset of 250°C and an endset of 271 °C. Endotherm 4 (integral == -728 mJ; normalized == -186 J / g) exhibited an onset of 341°C and an endset of 350°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 30 is the DSC data from a representative batch of Form A. The DSC data was collected by increasing the temperature of the sample (4.4 mg) from 30-350°C at a rate of 10°C / minute. Endotherms were observed at 11O°C (1), 275°C (2), and 344°C (3). Endotherm 1 (integral = -670 mJ; normalized = -151 J / g) exhibited an onset of 84°C. Endotherm 2 (integral = -480 mJ, normalized == -108 J / g) exhibited an onset of 242°C. Endotherm 3 exhibited an onset of 344°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 31 is the DSC data from a representative batch of Form B. The DSC data was collected by increasing the temperature of the sample (2.6 mg) from 30-350°C at a rate of 10°C / minute. 15 Endotherms were observed at 95°C (1), 225°C (2), 254°C (3), and 348°C (4). Endotherm 1 (integral = -256 mJ; normalized = -97 J / g) exhibited an onset of 75°C. Endotherm 2 (integral = -265 mJ; normalized === -101 J / g) exhibited an onset of 199°C. Endotherm 3 (integral == -140 mJ, normalized = -53 J / g) exhibited an onset of 239°C. Endotherm 4 (integral = -94 mJ; normalized = -36 J / g) exhibited an onset of 344°C. The x-axis is temperature measured in Celsius and the y-axis 20 the heat flow measured in milli Watts (mW). FIG. 32 is the DSC data from a representative batch of Form C. The DSC data was collected by increasing the temperature of the sample (2.5 mg) from 30-350°C at a rate of 10°C / minute. Endotherms were observed at 95°C (1), 235°C (2), 257°C (3), and 344°C (4). Endotherm 1 (integral = -88 mJ; normalized = -36 J / g) exhibited an onset of 77°C. Endotherm 2 (integral = -58 25 mJ; normalized = -23 J / g) exhibited anonsetof216°C. Endotherm 3 (integral = -31 mJ; normalized == -12 J / g) exhibited an onset of 247°C. Endotherm 4 (integral == -379 mJ; normalized == -154 J / g) exhibited an onset of 338°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 33 is the DSC data from a representative batch of Form D. The DSC data was 30 collected by increasing the temperature of the sample (2.5 mg) from 30-350°C at a rate of 10°C / minute. Endotherms ’were observed at 103°C (1), 260°C (2) and 345°C (3). Endotherm 1 2024205055 . 24 Jul 2024 (integral == -370 mJ; normalized == -149 J / g) exhibited an onset of 73°C. Endotherm 2 (integral == -271 mJ; normalized = -109 J / g) exhibited an onset of 228°C. Endotherm 3 (integral = -321 mJ; normalized = -129 J / g) exhibited an onset of 340°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 34 is the DSC data from a representative batch of Form E. The DSC data was collected by increasing the temperature of the sample (2.5 mg) from 30-350°C at a rate of 10°C / minute. Endotherms were observed at 70°C (1), 219°C (2), 275°C (3), and 345°C (4). Endotherm 1 (integral == -495 mJ; normalized == -194 J / g) exhibited an onset of 38°C. Endotherm 2 (integral == 25 mJ; normalized = 10 J / g) exhibited an onset of 209°C. Endotherm 3 (integral = -208 mJ; normalized == -81 J / g) exhibited an onset of 242°C. Endotherm 4 (integral == -339 mJ; normalized = -133 J / g) exhibited an onset of 340°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 35 istheDSC data from a representative batch of Form F. The DSC data was collected by increasing the temperature of the sample (3.0 mg) from 30-350°C at a rate of 10°C / minute. 15 Endotherms were observed at 73°C (1), 214°C (2), 277°C (3), 303°C (4), and 329°C (5). Endotherm 1 (integral = -991 mJ; normalized = -323 J / g) exhibited an onset of 43°C. Endotherm 2 (integral = -121 mJ; normalized = -39 J / g) exhibited an onset of 205°C. Endotherm 3 (integral == 98 mJ; normalized = 32 J / g) exhibited an onset of 265°C. Endotherm 4 (integral = -15 mJ; normalized == -5 J / g) exhibited an onset of 297°C. Endotherm 5 (integral == -283 mJ; normalized == 20   -92 J / g) exhibited an onset of 318°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 36 is the DSC data from a representative batch of Form G. The DSC data w=as collected by increasing the temperature of the sample (2.8 mg) from 30-350°C at a rate of 10°C / minute. Endotherms were observed at 81°C (1), 120°C (2), 260°C (3), and 347°C (4). 25 Endotherm 1 (integral = -167 mJ; normalized = -59 J / g) exhibited an onset of 56°C. Endotherm 2 (integral == -183 mJ, normalized == -65 J / g) exhibited an onset of 103°C. Endotherm 3 (integral === -251 mJ; normalized = -89 J / g) exhibited an onset of 235°C. Endotherm 4 (integral = -164 mJ; normalized == -58 J / g) exhibited an onset of 344°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). 30         FIG. 37 is the DSC data from a representative batch of Form H. The DSC data was collected by increasing the temperature of the sample (2.7 mg) from 30-350°C at a rate of 2024205055 . 24 Jul 2024 10°C / minute. Endotherms were observed at 110°C (1), 225°C (2), 274°C (3), and 346°C (4), Endotherm 1 (integral = -300 mJ; normalized = -110 J / g) exhibited an onset of 109°C. Endotherm 2 (integral == -41 mJ, normalized == -15 J / g) exhibited an onset of 210°C. Endotherm 3 (integral == -138 mJ; normalized = -50 J / g) exhibited an onset of 242°C. Endotherm 4 (integral = -301 mJ; normalized == -110 J / g) exhibited an onset of 346°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). FIG. 38 is the DSC data from a representative batch of Form A. The DSC data was collected by increasing the temperature of the sample (6.0 mg) from 30-350°C at a rate of 10°C / minute. Endotherms were observed at 121°C (1), 242°C (2), 290°C (3), and 348°C (4). Endotherm 1 (integral = -541 mJ; normalized == -90 J / g) exhibited an onset of 93°C. Endotherm 2 (integral = 133 mJ; normalized = 22 J / g) exhibited an onset of 233°C. Endotherm 3 (integral = -272 mJ; normalized === -45 J / g) exhibited an onset of 268°C. Endotherm 4 (integral === -1131 mJ, normalized = -198 J / g) exhibited an onset of 344°C. The x-axis is temperature measured in Celsius and the y-axis the heat flow measured in milli Watts (mW). 15          FIG. 39 is the XRPD pattern for Form I and Form J. The x-axis is 2Theta measured in degrees and the y-axis is intensity measured in counts. DETAILED DESCRIPTION OF THE INVENTION Definitions 20         Absolute Neutrophil Count (ANC) as used herein means the number of neutrophilgranulocytes (also known as polymorphonuclear cells, PMN's, polys, granulocytes, segmented neutrophils or segs) present in the blood. “AUC” (Amount*time / volume) as used herein means the area under the plasma concentration-time curve. 25          “AUC(o-24)” (Amount*time / volume) as used herein means the area under the plasma concentration time curve from time zero to 24 hours after dosing. “AUC(o-24).ss” (Amount*time / volume) at steady state as used herein means the area under the plasma concentration time curve from time zero to 24 hours after dosing at steady state. Steady state refers to the situation where the overall intake of a drug is fairly in dynamic equilibrium with 30 its elimination. In practice, it is generally considered that steady state is reached when a time of 4 to 5 times the half-life for a drug after regular dosing is started. 2024205055 . 24 Jul 2024 “Dose Normalized AUC” as used herein refers to AUC as described above divided by the dose of the compound given in milligrams. For example, if a 200 milligram dose of drug produces a 400 (h*ng / mL) AUC(o-24),ss then the dose normalized AUQo-24),ssis 2. “Cmax” (Amount / volume) as used herein means the maximum (peak) plasma drug concentration. “tmax” (Time) as used herein means time to reach maximum (peak) plasma concentration following drug administration. “Va / F” (Liters) as used herein means the theoretical volume that would be necessary to contain the total amount of an administered drug at the same concentration that it is observed in the blood plasma. It is generally defined as the distribution of a medication between plasma and the rest of the body after oral or parenteral dosing. “VdZF” as used herein is calculated by using the terminal elimination rate constant, which is derived mathematically from the concentration vs time curve to extrapolate a value of plasma concentration at time zero. Volume of distribution for oral drugs is normally expressed as Vd / F or WF. The skilled artisan is familiar with calculating Vd / F 15 orVz / F. “PD” as used herein means pharmcodynamic. “PK” as used herein means pharmacokinetic. “QD” as used herein means once daily. “BID” as used herein means twice daily. 20          “SAE” as used herein means serious adverse event. The term “carrier” applied to pharmaceutical compositions / combinations of the invention refers to a diluent, excipient, or vehicle with which a CDK4 / 6 inhibitor described herein is provided. A “dosage form” means a unit of administration of an active agent. Examples of dosage 25 forms include tablets, capsules, injections, suspensions, liquids, emulsions, implants, particles, spheres, creams, ointments, suppositories, inhalable forms, transdermal forms, buccal, sublingual, topical, gel, mucosal, and the like. By "hematological deficiency" is meant reduced hematological cell lineage counts or the insufficient production of blood cells (i.e., myelodysplasia) and / or lymphocytes (i.e., 30 lymphopenia, the reduction in the number of circulating lymphocytes, such as B- and T-cells). Hematological deficiency can be observed, for example, as myelosuppression in form of anemia, 2024205055 . 24 Jul 2024 reduction in platelet count (i.e., thrombocytopenia), reduction in white blood cell count (i.e., leukopenia), or the reduction in granulocytes (e.g., neutropenia). By “off-cycle” or “drug holiday” is meant a time period during which the subject is not administered or exposed to a chemotherapeutic. For example, in a treatment regime wherein the subject is administered the chemotherapeutic in a repeated 21-day cycle, and is not administered the chemotherapeutic at the start of the next 21-day cycle due to hematologic deficiencies, the delayed period of non-administration is considered the “off-cycle” or “drug holiday.” Off-target and drug holiday may also refer to an interruption in a treatment regime wherein the subject is not administered the chemotherapeutic for a time due to a deleterious side effect, for example, myelosuppression or other hematological deficiencies. In some embodiments, the term “CDK4 / 6-replication dependent cancer” refers to a cancer or cellular proliferation disorder that requires the activity of CDK4 / 6 for replication or proliferation, or which may be growth inhibited through the activity of a selective CDK4 / 6 inhibitor. Cancers and disorders of such type can be characterized by (e.g., that has cells that 15 exhibit) the presence of a functional Retinoblastoma protein. Such cancers and disorders are classified as being Rb-positive. Rb-positive abnormal cellular proliferation disorders, and variations of this term as used herein, refer to disorders or diseases caused by uncontrolled or abnormal cellular division which are characterized by the presence of a functional Retinoblastoma protein, which can include cancers. In one aspect of the present invention, the compounds and 20 methods described herein can be used to treat a non-cancerous Rb-positive abnormal cellular proliferation disorder. Examples of such disorders may include non-malignant lymphoproliferation, non-malignant breast neoplasms, psoriasis, arthritis, dermatitis, pre-cancerous colon lesions or pulps, angiogenesis disorders, immune mediated and non-immune mediated inflammatory diseases, arthritis, age-related macular degeneration, diabetes, and other 25 non-cancerous or benign cellular proliferation disorders. The terra “selective CDK4 / 6 inhibitor” used in the context of the compounds described herein includes compounds that inhibit CDK4 activity, CDK6 activity, or both CDK4 and CDK6 activity at an ICso molar concentration at least about 100, 200, 300, 400, or 500 times less (or in alternative embodiments, at least 750, 1000, 1500 or 2000 times less) than the IC50 molar 30 concentration necessary to inhibit to the same degree of CDK2 activity in a standard phosphorylation assay. 2024205055 . 24 Jul 2024 The term "pharmaceutically acceptable salt" as used herein refers to those salts which are, within the scope of sound medical judgment, suitable for use in contact with subjects (e.g., human subjects) without undue toxicity, irritation, allergic response, and the like, commensurate with a reasonable benefit / risk ratio, and effective for their intended use, as well as the zwitterionic forms, where possible, of the compounds of the presently disclosed subject matter. Thus, the term "salt" refers to the relatively non-toxic, inorganic and organic acid addition salts of compounds of the presently disclosed subject matter. These salts can be prepared in situ during the final isolation and purification of the compounds or by separately reacting the purified compound in its free base form with a suitable organic or inorganic acid and isolating the salt thus formed. Pharmaceutically acceptable base addition salts may be formed with metals or amines, such as alkali and alkaline earth metal hydroxides, or of organic amines. Examples of metals used as cations, include, but are not limited to, sodium, potassium, magnesium, calcium, and the like. Examples of suitable amines include, but are not limited to, N,N'-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, ethylenediamine, N-methylglucamine, and procaine. 15            Salts can be prepared from inorganic acids sulfate, pyrosulfate, bisulfate, sulfite, bisulfite, nitrate, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate, chloride, bromide, iodide such as hydrochloric, nitric, phosphoric, sulfuric, hydrobromic, hydriodic, phosphorus, and the like. Representative salts include the hydrobromide, hydrochloride, sulfate, bisulfate, nitrate, acetate, oxalate, valerate, oleate, palmitate, stearate, 20 laurate, borate, benzoate, lactate, phosphate, tosylate, citrate, maleate, fumarate, succinate, tartrate, naphthylate mesylate, glucoheptonate, lactobionate, laurylsulphonate and isethionate salts, and the like. Salts can also be prepared from organic acids, such as aliphatic mono- and dicarboxylic acids, phenyl-substituted alkanoic acids, hydroxy alkanoic acids, alkanedioic acids, aromatic acids, aliphatic and aromatic sulfonic acids, etc. and the like. Representative salts include acetate, 25 propionate, caprylate, isobutyrate, oxalate, malonate, succinate, suberate, sebacate, fumarate, maleate, mandelate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, phthalate, benzenesulfonate, toluenesulfonate, phenyl acetate,   citrate, lactate, maleate, tartrate, methanesulfonate, and the like. Pharmaceutically acceptable salts can include cations based on the alkali and alkaline earth metals, such as sodium, lithium, potassium, calcium, magnesium and 30 the like, as well as non-toxic ammonium, quaternary? ammonium, and amine cations including, but not limited to, ammonium, tetramethyl am monium, tetraethylammonium, methylamine, 2024205055 . 24 Jul 2024 dimethyl ami ne, trimethylamine, triethylamine, ethylamine, and the like. Also contemplated are the salts of amino acids such as arginate, gluconate, galacturonate, and the like. See, for example, Berge et al., J. Pharm. Sci., 1977, 66, 1-19, which is incorporated herein by reference. “Pharmaceutical compositions” are compositions comprising at least one active agent, and at least one other substance, such as a carrier. “Pharmaceutical combinations” are combinations of at least two active agents which may be combined in a single dosage form or provided together in separate dosage forms with instructions that the active agents are to be used together to treat any disorder described herein. A “pharmaceutically acceptable excipient” means an excipient that is useful in preparing a pharmaceutical composition / combination that is generally safe, non-toxic and neither biologically nor otherwise inappropriate for administration to a host, typically a human. In one embodiment, an excipient is used that is acceptable for veterinary use. In one embodiment, G1T38 includes desired isotopic substitutions of atoms, at amounts above the natural abundance of the isotope, i.e., enriched. Isotopes are atoms having the same 15   atomic number but different mass numbers, i.e., the same number of protons but a different number of neutrons. By way of general example and without limitation, isotopes of hydrogen, for example, deuterium ('ll) and tritium (3H) may be used anywhere in described structures. Alternatively, or in addition, isotopes of carbon, e.g., 13C and 14C, may be used. A preferred isotopic substitution is deuterium for hydrogen at one or more locations on the molecule to improve the performance 20 of the drug. The deuterium can be bound in a location of bond breakage during metabolism (an a-deuterium kinetic isotope effect) or next to or near the site of bond breakage (a p-deuterium kinetic isotope effect). Substitution with isotopes such as deuterium can afford certain therapeutic advantages resulting from greater metabolic stability, such as, for example, increased in vivo half-life or 25 reduced dosage requirements. Substitution of deuterium for hydrogen at a site of metabolic break down can reduce the rate of or eliminate the metabolism at that bond. At any position of the compound that a hydrogen atom may be present, the hydrogen atom can be any isotope of hydrogen, including protium (hl), deuterium (2H) and tritium (3H). Thus, reference herein to a compound encompasses all potential isotopic forms unless the context clearly dictates otherwise. 30           The term "isotopically-labeled" analog refers to an analog that is a "deuterated analog", a "i3C-labeled analog," or a "deuterated / !3C-labeled analog." The term "deuterated analog" means 23 2024205055 . 24 Jul 2024 a compound described herein, whereby a H-isotope, i.e., hydrogen / protium (lH), is substituted by a H-isotope, i.e., deuterium (2H). Deuterium substitution can be partial or complete. Partial deuterium substitution means that at ieast one hydrogen is substituted by at ieast one deuterium. In certain embodiments, the isotope is 90%, 95%, or 99% or more enriched in an isotope at any location of interest. In some embodiments it is deuterium that is 90%, 95%, or 99% enri ched at a desired location. In the description below and herein generally, whenever any of the terms referring to 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one, or its di-HCl salt, or 2'-((5-(piperazin-l-yl)pyridin-2-yl)amino)-7',8'-dihydro-6'H-spiro[cyclohexane-l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one are used, it should be understood that pharmaceutically acceptable salts or compositions are considered included, unless otherwise stated or inconsistent with the text. As contemplated herein and for purposes of the disclosed ranges herein, all ranges described herein include any and all numerical values occurring within the identified ranges. For 15 example, a range of 1 to 10, or between 1 and 10, as contemplated herein, would include the numerical values 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, as well as fractions thereof. Isolated Morphic Form B of Compound II 20          Form B of Compound II is an unexpected, highly stable, highly crystalline form of solid Compound II, which is beneficial for therapeutic efficacy and for the manufacture of pharmaceutical formulations. Form B and other crystalline forms of solid Compound II are described in International Patent Publication No. WO 2019 / 006393. As discussed in Example 4, Form B is stable under thermal stress of 60°C for 7 days. Additionally, a long-term stability study 25 at 25°C and 60% relative humidity revealed that isolated Compound II Form B is stable for at least 1 year (Example 15). In one embodiment isolated Compound II Form B is stable for at least about 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, or 24 months. 2024205055   24 Jul 2024 Compound II A number of crystallization and slurry experiments were conducted (Example 10, Tables 97-100) by varying temperature, cooling procedure, and isolation procedure. From these 5 experiments, eleven unique forms of Compound II were discovered, but only Form A, Form B, and Form D were appropriate for evaluation. The other forms resulted in weak crystalline forms, solvates, unstable hydrates, or anhydrates. Of the three solid forms, Form B was discovered to be an unexpectedly superior highly crystalline stable material for therapeutic dosage forms. In the dynamic vapor sorption experiment, Compound II remained in Form B after exposure to 90% 10 relative humidity (Example 11). Form B has advantageous properties for use as an active pharmaceutical ingredient in a solid dosage form and may have increased efficacy in such a formulation. In one embodiment, Form B is produced by recrystallization from HO and acetone, as described in more detail below. In one embodiment, Form B is characterized by an XRPD pattern substantially similar to that set 15 forth in FIG. 15. In one embodiment, Form B is characterized by an XRPD pattern comprising at least three 2theta values selected from 6.5°±0.2, 9.5±0.2°, 14.(HO.2°, 14.4:025 18.1±0.2°, 19.7±0.2°, and 22.4±0.2°. In one embodiment, Form B is characterized by an XRPD pattern comprising at least the 2theta values of 9.5±0.2°. In some embodiments isolated Compound II, Form B is characterized by the absence of at least one of the peaks at 4.6±0.2° 2theta. In some 20 embodiments i solated Compound II, Form B is characterized by the absence of a peak at 5.0±0.2° 2theta. In one embodiment, isolated Form B is characterized as having a 7.5% weight loss between 31 and 120°C in a thermogravimetric infrared (TG-IR) analysis. In one embodiment, isolated Form B is characterized as having differential scanning calorimetry (DSC) onset endotherms at about 105±20°C , about 220±20°C, and about 350±20°C, for example at 105°C, 220°C, and 350°C or 25   92°C, 219°C, and 341°C. 2024205055 . 24 Jul 2024 Compound II Form B can be produced, for example, by recrystallizing Compound I in concentrated HC1 and acetone. In one embodiment, Compound I is dissolved in concentrated HC1 and heated. This is followed by the addition of acetone and isolation of the product by cooling and filtration. In one embodiment, Compound II Form B is produced by the recrystallization of Compound II Form D. In an alternative embodiment, Compound II Form B is produced by repeated recrystallizations. In one embodiment, pure Compound II Form B is purified from impure Compound II Form B by a water:acetone (1:2) (v / v) slurry' followed by vacuum drying. Compound II Form A has less stability than Form B. Form A was produced when MeOH, EtOH, and 1-BuOH were used as solvents in the single solvent crystallizations and it was also produced in the binary' solvent crystallizations using water and MeOH as the primary solvent. Slurry experiments using n-heptane and c-hexane produced Form A as well. Compound II Form D has less stability than Form B. In one embodiment, Form D is produced by stirring a slurry of Compound II in acetonitrile at room temperature. In another 15 embodiment, Form D is produced by dissolving Compound I in concentrated HC1 before heating. Then the solution is allowed to cool and acetone is only added after crystallization begins to drive the precipitation to completion. The precipitate is then isolated via filtration. In an alternative embodiment, Form D is produced by dissolving Compound I in concentrated HC1 before heating. Then the solution is allowed to cool and acetone is only added once crystallization has occurred 20 and all solids are collected via filtration. In alternative embodiments, a combination of two or more Forms of Compound II is provided, such as Forms B and D; Forms B and A; or Forms A and D. In an alternative embodiment, an isolated combination of three forms is provided, for example, Forms A, B, and D. 25 Dosing Regime of 2!-((5-(4-isopropylpiperazin-1 -yl)pyridin-2-yl)amino)-7,,8l-dihydro-6lH-spiro[cvclohexane-l.,9l-pvrazino|T,2l: ESlpyrrolo^J-dlpyrimidinl-b'-one The invention provides particular dosing regimes which provide blood profile ranges of the selective CDK4 / 6 inhibitor 2'-((5-(4-isopropylpiperazin-l-yl)pyridin-2-yl)amino)-7',8'-30 dihydro-6'H-spiro[cyclohexane"l,9'-pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one 2'-((5-(4- i sopropylpiperazin-1 -y l)py ri din-2 -yl)amino)-7', 8'-dihydro-6'H-spiro[cy cl ohexane-1,9' -pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6'-one or its pharmaceutically acceptable salt, 2'-((5 2024205055 . 24 Jul 2024 (piperazin-1 -yl)pyridin-2-yl)amino)-7\8'-dihydro-6'H-spiro[cyclohexane-l, 9'- pyrazino[r,2':l,5]pyrrolo[2,3-d]pyrimidin]-6!-one or its pharmaceutically acceptable salt, or a selective CDK4 / 6 inhibitor, and methods using said dosing regimes for treating a subject having a CDK4 / 6-dependent cancer, for example estrogen receptor positive, HER2 negative (ER+ / HER2-) breast cancer, prostate cancer, B cell leukemia, lymphoma, Phl+ leukemia, and carcinoma, or other disorder as further described herein. In one embodiment, the G1T38 dosing regime provides a (mean AUC(o-24),ss (h*ng / mL)) / (dose (mg)) ratio of less than 5 and / or a (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing of not greater than 1.25 is attained. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 100 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 95 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 90 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 85 ng / mL. In one embodiment, the G1T38 15 dosing regime provides a Cmax of less than 80 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 75 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 70 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 65 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 60 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 55 20 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 50 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 45 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 40 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 35 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 30 ng / mL. In one embodiment, the G1T38 dosing 25 regime provides a Cmax of less than 25 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 20 ng / mL. In one embodiment, the G1T38 dosing regime provides a Cmax of less than 15 ng / mL. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, Cmax is measured for serum Compound I. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count 30 (cells / mmJ)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.15. 2024205055 . 24 Jul 2024 In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.05. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.95. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.85. In one embodiment, the (mean AUC(o-24).ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.75. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.65. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.55. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.45. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm')) ratio on day 22 of dosing is less than 0.35. In one embodiment, the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.25. In one embodiment, the (mean AUC(o-24).ss (h*ng / mL)) / 15 (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.15. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, mean AUC(o-24),ss is measured for serum Compound I. In one embodiment, the dose normalized AUC(o-24),ss is less than 5. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.75. In one embodiment, the dose normalized AUC(o-24j,ss 20 is less than 4.5. In one embodiment, the dose normalized AUC(o-24).ss is less than 4.25. In one embodiment, the dose normalized AUC(o-24).ss is less than 4.0. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.75. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.5. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.25. In one embodiment, the dose normalized AUC(o-24).ss is less than 3.0. In one embodiment, the dose 25 normalized AUC(o-24).ss is less than 3.75. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.5. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.0. In one embodiment, the dose normalized AUC(o-24).ss is less than 2.75. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.5. In one embodiment, the dose normalized AUC(o-24),Ss is less than 2.25. In one 30 embodiment, the dose normalized AUC(o-24).ss is less than 2.0. In one embodiment, the dose normalized AUC(o-24),ss is less than 1.75. In one embodiment, the dose normalized AUC(o-24),ss is 2024205055 . 24 Jul 2024 less than 1.5. In one embodiment, the dose normalized AUC(o-24),ss is less than 1.25. In one embodiment the dose normalized AUC(o-24),ss is less than 1.0. In one embodiment, G1T38 is dosed as Form B of Compound IL In one embodiment, dose normalized AUC(o-24),ss is measured for serum Compound I. In one embodiment, the dose normalized AUGo-24),ss is less than 4.75 and the (mean A.UGo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24).ss is less than 4.5 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.25 and the (mean AUGo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.0 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUQo-24),ss is less than 3.75 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 15   1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.5 and the (mean AUC(o- 24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUQo-24),ss is less than 3.25 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.0 and the (mean AUQo- 20   24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.75 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24>,ss is less than 2.5 and the (mean AUGo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 25    1.25. In one embodiment, the dose normalized AUC(o-24>,ss is less than 2.25 and the (mean AUC(o- 24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.0 and the (mean AUGo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, mean 30 AUGo-24),ss is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.15. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.05. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.95. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.85. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24j,ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.75. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (.Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.65. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute 15 Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.55. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24).ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.45. In one embodiment, the Cmax is less than 75 ng / mL and the (mean AUC(o-24).ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.35. In one embodiment, the Cmax is less than 75 ng / mL and the 20 (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.25. In any of the embodiments above, the Cmax is less than 70 ng / mL. In any of the embodiments above, the Cmax is less than 65 ng / mL, In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, mean AUC(o-24),ss is measured for serum Compound I. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUQo-25   24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.15. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.05. 30 In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.95. 2024205055 . 24 Jul 2024 In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24j,ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.85. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.75. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.65. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.55. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.45. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.35. In one embodiment, the dose normalized AUC(o-24),ss is less than 5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 0.25. 15 In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, the dose normalized AUC(o-24),ss is measured for serum Compound I. In one embodiment, mean AUC(o-24),ss is measured for serum Compound I. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.75 and the (mean AUQo-24).ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 20   1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.5 and the (mean AUQo- 24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUQo-24),ss is less than 4.25 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 4.0 and the (mean AUC(o-25   24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUQo-24),ss is less than 3.75 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 30   1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.25 and the (mean AUC(o- 24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 2024205055 . 24 Jul 2024 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 3.0 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mmJ)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.75 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.5 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.25 and the (mean AUC(o-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, the dose normalized AUC(o-24),ss is less than 2.0 and the (mean AUQo-24),ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio on day 22 of dosing is less than 1.25. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, the dose normalized AUC(o-24),ss is measured for serum Compound I. In one embodiment, mean AUC(o-24),ss is measured for serum Compound I. In one embodiment, the mean Vd / F is greater than about 10,000 L. In one embodiment, 15   the Vd / F is greater than about 11,000 L. In one embodiment, the Vd / F i s greater than about 12,000 L. In one embodiment, the Vd / F is greater than 14,000 L. In one embodiment, the Vd / F is greater than about 15,0000 L. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, Vd / F is measured for Compound I. In one embodiment, the mean Vz / F is greater than about 10,000 L. In one embodiment, the 20 Vz / F is greater than about 11,000 L. In one embodiment, the Vz / F is greater than about 12,000 L. In one embodiment, the Vz / F is greater than 14,000 L. In one embodiment, the Vz / F is greater than about 15,0000 L. In one embodiment, G1T38 is dosed as Form B of Compound II. In one embodiment, Vz / F is measured for Compound I. In one embodiment, the dose is about 150 mg, about 160 mg, about 170 mg, about 180 mg, 25 about 190 mg, about 200 mg, about 210 mg, about 220 mg, about 230 mg, about 240 mg, about 250 mg, about 260 rag, about 270 mg, about 280 mg, about 290 mg, or about 300 mg, of the Compound I. In one embodiment, the dose is about 310 mg, about 320 mg, about 330 mg, about 340 mg, about 350 mg, about 360 mg, about 370 rag, about 380 rag, about 390 mg, or about 400 mg, of the Compound I. In one embodiment, the dose is about 410 mg, about 420 mg, about 430 30 mg, about 440 mg, about 450 mg, about 460 mg, about 470 mg, about 480 mg, about 490 mg, or about 500 mg, of the Compound I. In one embodiment, the dose is about 510 mg, about 520 mg, 2024205055 . 24 Jul 2024 about 530 mg, about 540 mg, about 550 mg, about 560 mg, about 570 mg, about 580 mg, about 590 mg, or about 600 mg, of the Compound I. In one embodiment, the dose is about 610 mg, about 620 mg, about 630 mg, about 640 rag, about 650 mg, about 660 mg, about 670 mg, about 680 mg, about 690 mg, or about 700 mg, of the Compound I. In one embodiment, the dose is about 710 mg, about 720 mg, about 730 mg, about 740 mg, about 750 mg, about 760 mg, about 770 mg, about 780 mg, about 790 mg, or about 800 mg, of the Compound I. In one embodiment, the dose is about 150 mg, about 160 mg, about 170 mg, about 180 mg, about 190 mg, about 200 mg, about 210 mg, about 220 mg, about 230 mg, about 240 mg, about 250 mg, about 260 mg, about 270 mg, about 280 mg, about 290 mg, or about 300 mg, of the Compound II. In one embodiment, the dose is about 310 mg, about 320 mg, about 330 mg, about 340 mg, about 350 mg, about 360 mg, about 370 mg, about 380 mg, about 390 mg, or about 400 mg, of the Compound II. In one embodiment, the dose is about 410 mg, about 420 mg, about 430 mg, about 440 mg, about 450 mg, about 460 mg, about 470 mg, about 480 mg, about 490 mg, or about 500 mg, of the Compound II. In one embodiment, the dose is about 510 mg, about 520 mg, 15 about 530 mg, about 540 mg, about 550 mg, about 560 mg, about 570 mg, about 580 mg, about 590 mg, or about 600 mg, of the Compound II. In one embodiment, the dose is about 610 mg, about 620 mg, about 630 rag, about 640 mg, about 650 mg, about 660 rag, about 670 mg, about 680 mg, about 690 mg, or about 700 mg, of the Compound II. In one embodiment, the dose is about 710 mg, about 720 mg, about 730 mg, about 740 mg, about 750 mg, about 760 mg, about 20   770 mg, about 780 mg, about 790 mg, or about 800 mg, of the Compound II. In one embodiment, Compound II is dosed as Form B. In one embodiment, the dose is about 150 mg, about 160 mg, about 170 mg, about 180 mg, about 190 mg, about 200 mg, about 210 mg, about 220 mg, about 230 mg, about 240 mg, about 250 mg, about 260 mg, about 270 mg, about 280 mg, about 290 mg, or about 300 mg, of the 25 Compound III. In one embodiment, the dose is about 310 mg, about 320 mg, about 330 mg, about 340 mg, about 350 mg, about 360 mg, about 370 mg, about 380 mg, about 390 mg, or about 400 mg, of the Compound III. In one embodiment, the dose is about 410 mg, about 420 mg, about 430 mg, about 440 mg, about 450 rag, about 460 mg, about 470 mg, about 480 mg, about 490 mg, or about 500 mg, of the Compound III. In one embodiment, the dose is about 510 mg, about 520 mg, 30 about 530 mg, about 540 mg, about 550 mg, about 560 mg, about 570 mg, about 580 mg, about 590 mg, or about 600 mg, of the Compound III. In one embodiment, the dose is about 610 mg, 2024205055 . 24 Jul 2024 about 620 mg, about 630 mg, about 640 mg, about 650 mg, about 660 mg, about 670 mg, about 680 mg, about 690 mg, or about 700 mg, of the Compound III. In one embodiment, the dose is about 710 mg, about 720 rag, about 730 mg, about 740 mg, about 750 rag, about 760 mg, about 770 mg, about 780 mg, about 790 mg, or about 800 mg, of the Compound III. In one embodiment, the dosing regimen comprises about 200 mg of Compound II administered once a day. In one embodiment, the dosing regimen comprises about 300 mg of Compound II administered once a day. In one embodiment, the dosing regimen comprises about 400 mg of Compound II administered once a day. In one embodiment, the dosing regimen comprises about 500 mg of Compound II administered once a day. In one embodiment, the dosing regimen comprises about 650 mg of Compound II administered once a day. In one embodiment, the dosing regimen comprises about 100 mg of Compound II administered twice a day optionally spaced about 12 hours apart. In one embodiment, the dosing regimen comprises about 150 mg of Compound II administered twice a day optionally spaced about 12 hours apart. In one embodiment, the dosing regimen comprises about 200 mg of Compound II administered twice a 15 day optionally spaced about 12 hours apart. In one embodiment, Compound II is dosed as form B. Pharmaceutical Preparations G1T38 can be administered as the neat chemical, or as its pharmaceutically acceptable salt, 20 as described herein. Accordingly, the disclosure provides pharmaceutical compositions utilized in a dosing regime for G1T38, or its pharmaceutically acceptable salt, described herein in an amount of compound or pharmaceutically acceptable salt together with at least one pharmaceutically acceptable earner to achieve the PK and PD ranges described herein. The pharmaceutical composition may contain a compound or salt as the only active agent, or, in an alternative 25 embodiment, the compound and at least one additional active agent. The pharmaceutical composition may also include a molar ratio of the active compound and an additional active agent. G1T38, or a pharmaceutically acceptable salt thereof’ are administered in an oral dosage form. Carriers include excipients and diluents and must be of sufficiently high purity and 30   sufficiently low toxicity to render them suitable for administration to the patient being treated. The carrier can be inert or it can possess pharmaceutical benefits of its own. The amount of carrier 2024205055 . 24 Jul 2024 employed in conjunction with the CDK4 / 6 inhibitor is sufficient to provide a practical quantity of material for administration per unit dose of the compound . The carrier can be inert or it can possess pharmaceutical benefits of its own. The amount of carrier employed in conjunction with the compound is sufficient to provide a practical quantity of material for administration per unit dose of the compound. Cl asses of carriers include, but are not limited to binders, buffering agents, coloring agents, diluents, disintegrants, emulsifiers, fillers, flavorants, glidents, lubricants, pH modifiers, preservatives, stabilizers, surfactants, solubilizers, tableting agents, and wetting agents. Some carriers may be listed in more than one class, for example vegetable oil may be used as a lubricant in some formulations and a diluent in others. Exemplary pharmaceutically acceptable carriers include sugars, starches, celluloses, powdered tragacanth, malt, gelatin; talc, and vegetable oils. Examples of other matrix materials, fillers, or diluents include lactose, mannitol, xylitol, microcrystalline cellulose, calcium diphosphate, and starch. Examples of surface active agents include sodium lauryl sulfate and polysorbate 80. Examples of drug complexing agents or solubilizers include the polyethylene glycols, caffeine, 15 xanthene, gentisic acid and cylodextrins. Examples of disintegrants include sodium starch gycolate, sodium alginate, carboxymethyl cellulose sodium, methyl cellulose, colloidal silicon dioxide, and croscarmellose sodium. Examples of binders include methyl cellulose, microcrystalline cellulose, starch, and gums such as guar gum, and tragacanth. Examples of lubricants include magnesium stearate and calcium stearate. Examples of pH modifiers include 20 acids such as citric acid, acetic acid, ascorbic acid, lactic acid, aspartic acid, succinic acid, phosphoric acid, and the like; bases such as sodium acetate, potassium acetate, calcium oxide, magnesium oxide, trisodium phosphate, sodium hydroxide, calcium hydroxide, aluminum hydroxide, and the like, and buffers generally comprising mixtures of acids and the salts of said acids. Optional other active agents may be included in a pharmaceutical composition, which do 25 not substantially interfere with the activity of the compound of the present invention. The pharmaceutical compositions can be formulated for oral administration. These compositions can contain any amount of active compound that achieves the desired result, for example between 0.1 and 99 weight % (wt.%) of the compound and usually at least about 5 wt.% of the compound. Some embodiments contain at least about 10%, 15%, 20%, 25 wt.% to about 30   50 wt. % or from about 5 wt.% to about 75 wt.% of the compound . 2024205055 . 24 Jul 2024 Methods of Treatment As contemplated herein, a dosing regime providing PK and / or PD blood profiles as described herein can be used to treat a CDK4 / 6-replication dependent cancers. In one embodiment, the dosing regime is used to treat breast cancer. In one embodiment the breast cancer is HR+ and HER2-. In one embodiment the breast cancer is HR- and HER2+. In one embodiment, the dosing regime is used to treat non-small cell lung cancer (NSCLC). In one embodiment the NSCLC has an EGFR mutation. In one embodiment the NSCLC has a KRAS mutation. In one embodiment, the dosing regime described herein is used to treat prostate cancer. In one embodiment the prostate cancer is castration resistant. In one embodiment a prior chemotherapeutic agent already failed (e.g. 2nd line therapy). In one embodiment, a dosing regime described herein is used to treat lymphoma. In one embodiment the lymphoma is mantle cell lymphoma (MCL), marginal zone lymphoma (MZL), chronic lymphocytic leukemia (CLL), follicular lymphoma (FL), or diffuse large B-cell lymphoma 15 (DLBCL). In one embodiment a prior chemotherapeutic agent already failed (e.g. 2nd line therapy). In one embodiment, a dosing regime described herein is used to treat melanoma. In one embodiment the melanoma has a BRAF mutation. In one embodiment, a dosing regime described herein is used to treat RAS mutated cancer. 20 In one embodiment the RAS mutated cancer is colon cancer (CLC). In one embodiment the RAS mutated cancer is pancreatic cancer. In one embodiment the RAS mutated cancer is cholan giocarcinoma. In one embodiment, a dosing regime described herein is used to treat a gastrointestinal stromal tumor (GIST). In one embodiment the treatment with imatinib or sunitinib already failed 25    (e.g. 2nd line therapy). Exemplary proliferative disorders which may be treated using the dosing regime described herein include, but are not limited to, benign growths, neoplasms, tumors, cancer (Rb positive or Rb negative), autoimmune disorders, inflammatory disorders graft-versus-host rejection, and fibrotic disorders. 30          Non-limiting examples of cancers that can be treated according to the present invention include, but are not limited to, acoustic neuroma, adenocarcinoma, adrenal gland cancer, anal 2024205055 . 24 Jul 2024 cancer, angiosarcoma (e.g., lymphangiosarcoma,    lymphangioendothel iosarcoma, hemangiosarcoma), appendix cancer, benign monoclonal gammopathy, biliary cancer (e.g., cholangiocarcinoma), bladder cancer, breast cancer (e.g., adenocarcinoma of the breast, papillary carcinoma of the breast, mammary' cancer, medullary' carcinoma of the breast), brain cancer (e.g., meningioma; glioma, e.g., astrocytoma, oligodendroglioma; medulloblastoma), bronchus cancer, carcinoid tumor, cervical cancer (e.g., cervical adenocarcinoma), choriocarcinoma, chordoma, craniopharyngioma, colorectal cancer (e.g., colon cancer, rectal cancer, colorectal adenocarcinoma), epithelial carcinoma, ependymoma, endotheliosarcoma (e.g., Kaposi’s sarcoma, multiple idiopathic hemorrhagic sarcoma), endometrial cancer (e.g., uterine cancer, uterine sarcoma), esophageal cancer (e.g., adenocarcinoma of the esophagus, Barrett’s adenocarcinoma), Ewing’s sarcoma, eye cancer (e.g., intraocular melanoma, retinoblastoma), familiar hypereosinophilia, gall bladder cancer, gastric cancer (e.g., stomach adenocarcinoma), gastrointestinal stromal tumor (GIST), head and neck cancer (e.g., head and neck squamous cell carcinoma, oral cancer (e.g., oral squamous cell carcinoma (OSCC), throat cancer (e.g., laryngeal 15 cancer, pharyngeal cancer, nasopharyngeal cancer, oropharyngeal cancer)), hematopoietic cancers (e.g., leukemia such as acute lymphocytic leukemia (ALL) - also known as acute lymphoblastic leukemia or acute lymphoid leukemia (e.g., B-cell ALL, T-cell ALL), acute myelocytic leukemia (AML) (e.g., B-cell AML, T-cell AML), chronic myelocytic leukemia (CML) (e.g., B-cell CML, T-cell CML), and chronic lymphocytic leukemia (CLL) (e.g., B-cell CLL, T-cell CLL); 20 lymphoma such as Hodgkin lymphoma (HL) (e.g., B-cell HL, T-cell HL) and non-Hodgkin lymphoma (NHL) (e.g., B-cell NHL such as diffuse large cell lymphoma (DLCL) (e.g., diffuse large B-cell lymphoma (DLBCL)), follicular lymphoma, chronic lymphocytic leukemia / small lymphocytic lymphoma (CLL / SLL), mantle cell lymphoma (MCL), marginal zone B-cell lymphomas (e.g., mucosa-associated lymphoid tissue (MALT) lymphomas, nodal marginal zone 25 B-cell lymphoma, splenic marginal zone B-cell lymphoma), primary’ mediastinal B-cell lymphoma, Burkitt lymphoma, lymphoplasmacytic lymphoma (i.e., “Waldenstrom’s macroglobulinemia”), hairy cell leukemia (HCL), immunoblastic large cell lymphoma, precursor B-lymphoblastic lymphoma and primary central nervous system (CNS) lymphoma, and T-cell NHL such as precursor T-lymphoblastic lymphoma / leukemia, peripheral T-cell lymphoma 30 (PTCL) (e.g., cutaneous T-cell lymphoma (CTCL) (e.g., mycosis fungiodes, Sezary syndrome), angioimmunoblastic T-cell lymphoma, extranodal natural killer T-cell lymphoma, enteropathy 2024205055 . 24 Jul 2024 type T-cell lymphoma, subcutaneous panniculitis-like T-cell lymphoma, anaplastic large cell lymphoma); a mixture of one or more leukemia / lymphoma as described above; and multiple myeloma (MM)), heavy chain disease (e.g., alpha chain disease, gamma chain disease, mu chain disease), hemangioblastoma, inflammatory myofibroblastic tumors, immunocytic amyloidosis, kidney cancer (e.g., nephroblastoma a.k.a. Wilms’ tumor, renal cell carcinoma), liver cancer (e.g., hepatocellular cancer (HCC), malignant hepatoma), lung cancer (e.g., bronchogenic carcinoma, small cell lung cancer (SCLC), non-small cell lung cancer (NSCLC), adenocarcinoma of the lung), leiomyosarcoma (LMS), mastocytosis (e.g., systemic mastocytosis), myelodysplastic syndrome (MDS), mesothelioma, myeloproliferative disorder (MPD) (e.g., polycythemia Vera (PV), essential thrombocytosis (ET), agnogenic myeloid metaplasia (AMM) a.k.a. myelofibrosis (MF), chronic idiopathic myelofibrosis, chronic myelocytic leukemia (CML), chronic neutrophilic leukemia (CNL), hypereosinophilic syndrome (HES)), neurofibroma (e.g., neurofibromatosis (NF) type 1 or type 2, schwannomatosis), neuroendocrine cancer (e.g., gastroenteropancreatic neuroendoctrine tumor (GEP-NET), carcinoid tumor), osteosarcoma, ovarian cancer (e.g., 15 cystadenocarcinoma, ovarian embryonal carcinoma, ovarian adenocarcinoma), papillary adenocarcinoma, pancreatic cancer (e.g., pancreatic andenocarcinoma, intraductal papillary' mucinous neoplasm (IPMN), Islet cell tumors), penile cancer (e.g., Paget’s disease of the penis and scrotum), pinealoma, primitive neuroectodermal tumor (PNT), prostate cancer (e.g., prostate adenocarcinoma), rectal cancer, rhabdomyosarcoma, salivary gland cancer, skin cancer (e.g., 20 squamous cell carcinoma (SCC), keratoacanthoma (KA), melanoma, basal cell carcinoma (BCC)), small bowel cancer (e.g., appendix cancer), soft tissue sarcoma (e.g., malignant fibrous histiocytoma (MEH), liposarcoma, malignant peripheral nerve sheath tumor (MPNST), chondrosarcoma, fibrosarcoma, myxosarcoma), sebaceous gland carcinoma, sweat gland carcinoma, synovioma, testicular cancer (e.g., seminoma, testicular embryonal carcinoma), thyroid 25 cancer (e.g., papillary carcinoma of the thyroid, papillary' thyroid carcinoma (PTC), medullary thyroid cancer), urethral cancer, vaginal cancer and vulvar cancer (e.g., Paget’s disease of the vulva). In another embodiment, the disorder is myelodysplastic syndrome (MDS). In certain embodiments, the cancer is a hematopoietic cancer. In certain embodiments, the 30 hematopoietic cancer is a lymphoma. In certain embodiments, the hematopoietic cancer is a leukemia. In certain embodiments, the leukemia is acute myelocytic leukemia (AML). 2024205055 . 24 Jul 2024 In certain embodiments, the proliferative disorder is a myeloproliferative neoplasm. In certain embodiments, the myeloproliferative neoplasm (MPN) is primary myelofibrosis (PMF). In certain embodiments, the cancer is a solid tumor. A solid tumor, as used herein, refers to an abnormal mass of tissue that usually does not contain cysts or liquid areas. Different types of solid tumors are named for the type of cells that form them. Examples of classes of solid tumors include, but are not limited to, sarcomas, carcinomas, and lymphomas, as described above herein. Additional examples of solid tumors include, but are not limited to, squamous cell carcinoma, colon cancer, breast cancer, prostate cancer, lung cancer, liver cancer, pancreatic cancer, and melanoma. In certain embodiments, the condition treated is a disorder related to abnormal cellular proliferation. Abnormal cellular proliferation, notably hyperproliferation, can occur as a result of a wide variety of factors, including genetic mutation, infection, exposure to toxins, autoimmune disorders, and benign or malignant tumor induction. 15           There are a number of skin disorders associated with cellular hyperproliferation. Psoriasis, for example, is a benign disease of human skin generally characterized by plaques covered by thickened scales. The disease is caused by increased proliferation of epidermal cells of unknown cause. Chronic eczema is also associated with significant hyperproliferation of the epidermis. Other diseases caused by hyperproliferation of skin cells include atopic dermatitis, lichen 20 planus, warts, pemphigus vulgaris, actinic keratosis, basal cell carcinoma and squamous cell carcinoma. Other hyperproliferative cell disorders include blood vessel proliferation disorders, fibrotic disorders, autoimmune disorders, graft-versus-host rejection, tumors and cancers. Blood vessel proliferative disorders include angiogenic and vasculogenic disorders. 25 Proliferation of smooth muscle cells in the course of development of plaques in vascular tissue cause, for example, restenosis, retinopathies and atherosclerosis. Both cell migration and cell proliferation play a role in the formation of atherosclerotic lesions. Fibrotic disorders are often due to the abnormal formation of an extracellular matrix. Examples of fibrotic disorders include hepatic cirrhosis and mesangial proliferative cell disorders. 30 Hepatic cirrhosis is characterized by the increase in extracellular matrix constituents resulting in the formation of a hepatic scar. Hepatic cirrhosis can cause diseases such as cirrhosis of the liver. 2024205055 . 24 Jul 2024 An increased extracellular matrix resulting in a hepatic scar can also be caused by viral infection such as hepatitis. Lipocytes appear to play a major role in hepatic cirrhosis. Mesangial disorders are brought about by abnormal proliferation of mesangial cells. Mesangial hyperproliferative cell disorders include various human renal diseases, such as glomerulonephritis, diabetic nephropathy, malignant nephrosclerosis, thrombotic microangiopathy syndromes, transplant rejection, and glomerulopathies. Another disease with a proliferative component is rheumatoid arthritis. Rheumatoid arthritis is generally considered an autoimmune disease that is thought to be associated with activity of autoreactive T cells, and to be caused by autoantibodies produced against collagen and IgE. Other disorders that can include an abnormal cellular proliferative component include Bechet’s syndrome, acute respiratory distress syndrome (ARDS), ischemic heart disease, postdialysis syndrome, leukemia, acquired immune deficiency syndrome, vasculitis, lipid histiocytosis, septic shock and inflammation in general. The term “neoplasia” or “cancer” is used throughout the specification to refer to the 15 pathological process that results in the formation and growth of a cancerous or malignant neoplasm, i.e., abnormal tissue (solid) or cells (non-solid) that grow by cellular proliferation, often more rapidly than normal and continues to grow after the stimuli that initiated the new growth cease. Malignant neoplasms show' partial or complete lack of structural organization and functional coordination with the normal tissue and most invade surrounding tissues, can metastasize to 20 several sites, are likely to recur after attempted removal and may cause the death of the patient unless adequately treated. As used herein, the term neoplasia is used to describe all cancerous disease states and embraces or encompasses the pathological process associated with malignant hematogenous, ascitic and solid tumors. Exemplary cancers which may be treated with the G1T38 dosing regime described herein either alone or in combination with at least one additional anti-25 cancer agent include squamous-cell carcinoma, basal cell carcinoma, hepatocellular carcinomas, and renal cell carcinomas, cancer of the bladder, bowel, breast, cervix, colon, esophagus, head, kidney, liver, lung, neck, ovary’, pancreas, prostate, and stomach; leukemias; benign and malignant lymphomas, particularly Burkitt's lymphoma and Non-Hodgkin's lymphoma; benign and malignant melanomas; myeloproliferative diseases; sarcomas, including Ewing's sarcoma, 30 hemangiosarcoma, Kaposi's sarcoma, liposarcoma, myosarcomas, peripheral neuroepithelioma, synovial sarcoma, gliomas, astrocytomas, oligodendrogliomas, ependymomas, gliobastomas, 2024205055 . 24 Jul 2024 neuroblastomas, ganglioneuromas, gangliogliomas, medulloblastomas, pineal cell tumors, meningiomas, meningeal sarcomas, neurofibromas, and Schwannomas; bowel cancer, breast cancer, prostate cancer, cervical cancer, uterine cancer, lung cancer, ovarian cancer, testicular cancer, thyroid cancer, astrocytoma, esophageal cancer, pancreatic cancer, stomach cancer, liver cancer, colon cancer, melanoma, carcinosarcoma, Hodgkin's disease, Wilms' tumor and teratocarcinomas. Additional cancers which may be treated using Compound I include, for example, acute granulocytic leukemia, acute lymphocytic leukemia (ALL), acute myelogenous leukemia (AML), adenosarcoma, adrenal cancer, adrenocortical carcinoma, anaplastic astrocytoma, angiosarcoma, astrocytoma, Basal cell carcinoma, B-Cell lymphoma, bile duct cancer, bladder cancer, bone cancer, bone marrow cancer, bowel cancer, brain cancer, brain stem glioma, breast cancer, triple (estrogen, progesterone and HER-2) negative breast cancer, double negative breast cancer (two of estrogen, progesterone and HER-2 are negative), single negative (one of estrogen, progesterone and HER-2 is negative), estrogen-receptor positive, HER2-negative breast cancer, estrogen receptor-negative breast cancer, estrogen receptor positive breast cancer, 15 metastatic breast cancer, luminal A breast cancer, luminal B breast cancer, Her2-negative breast cancer, HER2-positive or negative breast cancer, progesterone receptor-negative breast cancer, progesterone receptor-positive breast cancer, recurrent breast cancer, carcinoid tumors, cervical cancer, cholangiocarcinoma, chondrosarcoma, chronic lymphocytic leukemia (CLL), chronic myelogenous leukemia (CML), colon cancer, colorectal cancer, craniopharyngioma, cutaneous 20 lymphoma, cutaneous melanoma, diffuse astrocytoma, ductal carcinoma in situ (DCIS), ependymoma, epithelioid sarcoma, esophageal cancer, ewing sarcoma, extrahepatic bile duct cancer, fallopian tube cancer, fibrosarcoma, gallbladder cancer, gastrointestinal cancer, gastrointestinal carcinoid cancer, gastrointestinal stromal tumors (GIST), germ cell tumor glioblastoma multiforme (GBM), glioma, hairy cell leukemia, head and neck cancer, 25 hemangioendothelioma, Hodgkin lymphoma, hypopharyngeal cancer, infiltrating ductal carcinoma (IDC), infiltrating lobular carcinoma (ILC), inflammatory breast cancer (IBC), intestinal Cancer, intrahepatic bile duct cancer, invasive / infiltrating breast cancer, Islet cell cancer, jaw cancer, Kaposi sarcoma, kidney cancer, laryngeal cancer, leiomyosarcoma, leptomeningeal metastases, leukemia, lip cancer, liposarcoma, liver cancer, lobular carcinoma in situ, low-grade 30 astrocytoma, lung cancer, lymph node cancer, lymphoma, male breast cancer, medullary carcinoma, medulloblastoma, melanoma, meningioma, Merkel cell carcinoma, mesenchymal 2024205055 . 24 Jul 2024 chondrosarcoma, mesenchymous, mesothelioma metastatic breast cancer, metastatic melanoma metastatic squamous neck cancer, mixed gliomas, monodermal teratoma, mouth cancer mucinous carcinoma, mucosal melanoma, multiple myeloma, Mycosis Fungoides, myelodysplastic syndrome, nasal cavity cancer, nasopharyngeal cancer, neck cancer, neuroendocrine tumors (NETs), non-Hodgkin's lymphoma, non-small cell lung cancer (NSCLC), oat cell cancer, ocular cancer, ocular melanoma, oligodendroglioma, oral cancer, oral cavity cancer, oropharyngeal cancer, osteogenic sarcoma, osteosarcoma, ovarian cancer, ovarian epithelial cancer ovarian germ cell tumor, ovarian primary peritoneal carcinoma, ovarian sex cord stromal tumor, Paget's disease, pancreatic cancer, papillary carcinoma, paranasal sinus cancer, parathyroid cancer, pelvic cancer, penile cancer, peripheral nerve cancer, peritoneal cancer, pharyngeal cancer, pheochromocytoma, pilocytic astrocytoma, pineal region tumor, pineoblastoma, pituitary gland cancer, primary central nervous system (CNS) lymphoma, prostate cancer, rectal cancer, renal cell carcinoma, renal pelvis cancer, rhabdomyosarcoma, salivary gland cancer, soft tissue sarcoma, bone sarcoma, sarcoma, sinus cancer, skin cancer, small cell lung cancer (SCLC), small intestine cancer, spinal cancer, 15 spinal column cancer, spinal cord cancer, squamous cell carcinoma, stomach cancer, synovial sarcoma, T-cell lymphoma, testicular cancer, throat cancer, thymoma,Thymic carcinoma, thyroid cancer, tongue cancer, tonsil cancer, transitional cell cancer, tubal cancer, tubular carcinoma, undiagnosed cancer, ureteral cancer, urethral cancer, uterine adenocarcinoma, uterine cancer, uterine sarcoma, vaginal cancer, vulvar cancer, T-cell lineage acute lymphoblastic leukemia (T-20 ALL), T-cell lineage lymphoblastic lymphoma (T-LL), peripheral T-cell lymphoma, Adult T-cell leukemia, Pre-B ALL, Pre-B lymphomas, large B-cell lymphoma, Burkitts lymphoma, B-cell ALL, Philadelphia chromosome positive ALL, Philadelphia chromosome positive CML, juvenile myelomonocytic leukemia (JMML), acute promyelocytic leukemia (a subtype of AML), large granular lymphocytic leukemia, Adult T-cell chronic leukemia, diffuse large B cell lymphoma, 25 follicular lymphoma; Mucosa-Associated Lymphatic Tissue lymphoma (MALT), small cell lymphocytic lymphoma, mediastinal large B cell lymphoma, nodal marginal zone B cell lymphoma (NMZL); splenic marginal zone lymphoma (SMZL); intravascular large B-cell lymphoma, primary effusion lymphoma; or lymphomatoid granulomatosis;; B-cell prolymphocytic leukemia; splenic lymphoma / leukemia, unclassifiable, splenic diffuse red pulp 30 small B-cell lymphoma, lymphoplasmacytic lymphoma; heavy chain diseases, for example, Alpha heavy chain disease, Gamma heavy chain disease, Mu heavy chain disease, plasma cell myeloma, 2024205055 . 24 Jul 2024 solitary plasmacytoma of bone, extraosseous plasmacytoma; primary cutaneous follicle center lymphoma, T cell / histocyte rich large B-cell lymphoma, DLBCL associated with chronic inflammation; Epstein-Barr virus (EBV)+ DLBCL of the elderly; primary / mediastinal (thymic) large B-cell lymphoma, primary / cutaneous DLBCL, leg type, ALK+ large B-cell lymphoma, plasmablastic lymphoma; large B-cell lymphoma arising in HHV8-associated multicentric, Castleman disease; B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma, or B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and classical Hodgkin lymphoma. Combination Therapy In one embodiment, the dosing regime may include at least one additional therapeutic agent, for example, for treatment of a disorder listed herein. In one embodiment, the G1T38 dosing regime achieves a specific PK and / or PD blood profile as described herein in combination or alternation with at least one additional inhibitor of the CDK4 / 6 pathway or a second active 15 compound with a different biological mechanism of action. In one embodiment, the present invention provides a method of treating Rb-positive CDK4 / 6-dependent cancer by administering to a subject in need thereof G1T38 as described in combination or alternation with an additional therapeutic agent. In one embodiment, the dosing regime described herein is used to treat breast cancer. In 20 one embodiment the breast cancer is HR+ and HER2-. In one embodiment the breast cancer is HR- and HER2+. In one embodiment, the CDK4 / 6 inhibitor is used in combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agent is trastuzumab. In one embodiment the additional therapeutic agent is lapatinib. In one embodiment, the additional therapeutic agents are lapatinib and trastuzumab. In another embodiment, the 25 additional therapeutic agent is fulvestrant. In one embodiment the additional therapeutic agent is goserelin. In one embodiment, the G1T38 dosing regime is used to treat non-small cell lung cancer (NSCLC). In one embodiment the NSCLC has an EGFR mutation. In one embodiment, G1T38 dosing regime is used in combination with one or more additional therapeutic agents. In one 30 embodiment the NSCLC has an EGFR mutation and an EGFR inhibitor failed (e.g. 2nd line 2024205055 . 24 Jul 2024 therapy). In one embodiment the additional therapeutic agent is osimertinib. In one embodiment the additional therapeutic agent is alectinib. In one embodiment the NSCLC has a KRAS mutation. In one embodiment, the G1T38 dosing regime is used in combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agent is a MEK inhibitor. In one embodiment, the G1T38 dosing regime described herein is used to treat prostate cancer. In one embodiment the prostate cancer is castration resistant. In one embodiment, the G1T38 dosing regime is used in combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agent is an androgen receptor-blocker. In one embodiment a prior chemotherapeutic agent already failed (e.g. 2nd line therapy). In one embodiment, a G1T38 dosing regime described herein is used to treat lymphoma. In one embodiment the lymphoma is mantle cell lymphoma (MCL), marginal zone lymphoma (MZL), chronic lymphocytic leukemia (CLL), follicular lymphoma (FL), or diffuse large B-cell lymphoma (DLBCL). In one embodiment, a G1T38 dosing regime described herein is used in 15 combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agent is a BTK inhibitor. In one embodiment a prior chemotherapeutic agent already failed (e.g. 2nd line therapy). In one embodiment, a G1T38 dosing regime described herein is used to treat melanoma. In one embodiment the melanoma has a BRAF mutation. In one embodiment, the CDK4 / 6 inhibitor 20 is used in combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agents are a MEK inhibitor and a RAF inhibitor. In one embodiment, G1T38 dosing regime described herein is used to treat RAS mutated cancer. In one embodiment the RAS mutated cancer is colon cancer (CLC). In one embodiment the RAS mutated cancer is pancreatic cancer. In one embodiment the RAS mutated cancer is 25 cholangiocarcinoma. In one embodiment, the G1T38 dosing regime described herein is used in combination with one or more additional therapeutic agents. In one embodiment the additional therapeutic agent is a RAF inhibitor. In one embodiment, GIT38 dosing regime described herein is used to treat a gastrointestinal stromal tumor (GIST). In one embodiment, the G1T38 dosing regime described 30 herein is used in combination with one or more additional therapeutic agents. In one embodiment, 2024205055 . 24 Jul 2024 the additional therapeutic agent is regorafenib. In one embodiment the treatment with imatinib or sunitinib already failed (e.g. 2nd line therapy). G1T38, or a pharmaceutically acceptable salt thereof, are administered in an oral dosage form alone or in combination with another compound or another bioactive agent to treat a human with a disorder as described herein. The term “bioactive agent” or “therapeutic agent” is used to describe an agent, other than the selected compound according to the present invention, which can be used in combination or alternation with a compound of the present invention to achieve a desired result of therapy. In one embodiment, the compound of the present invention and the bioactive agent are administered in a manner that they are active in vivo during overlapping time periods, for example, have time-period overlapping Cmax, Tmax, AUC or other pharmacokinetic parameter. In another embodiment, the compound of the present invention and the bioactive agent are administered to a host in need thereof that do not have overlapping pharmacokinetic parameter, however, one has a therapeutic impact on the therapeutic efficacy of the other. 15          In one aspect of this embodiment, the bioactive agent is a chemotherapeutic. In another aspect of this embodiment, the bioactive agent is a growth factor. In one aspect of this embodiment, the bioactive agent is an immune modulator, including but not limited to a checkpoint inhibitor, including as non-limiting examples, a PD-1 inhibitor, PD-L1 inhibitor, PD-L2 inhibitor, CTLA-4 inhibitor, LAG-3 inhibitor, TIM-3 inhibitor, V-domain 20 Ig suppressor of T-cell activation (VISTA) inhibitors, small molecule, peptide, nucleotide, or other inhibitor. In certain aspects, the immune modulator is an antibody, such as a monoclonal antibody. Immune checkpoint inhibitors for use in the methods described herein include, but are not limited to PD-1 inhibitors, PD-L1 inhibitors, PD-L2 inhibitors, CTLA-4 inhibitors, LAG-3 inhibitors, TIM-3 inhibitors, and V-domain Ig suppressor of T-cell activation (VISTA) inhibitors, 25 or combinations thereof. In one embodiment, the immune checkpoint inhibitor is a PD-1 inhibitor that blocks the interaction of PD-1 and PD-L1 by binding to the PD-1 receptor, and in turn inhibits immune suppression. In one embodiment, the immune checkpoint inhibitor is a PD-1 immune checkpoint inhibitor selected from nivolumab (Opdivo®), pembrolizumab (Keytruda®), pidilizumab, AMP-30   224 (AstraZeneca and Medlmmune). PF-06801591 (Pfizer), MEDI0680 (AstraZeneca), PDR001 (Novartis), REGN2810 (Regeneron), MGA012 (MacroGenics), BGB-A317 (BeiGene) SHR-12-1 2024205055 . 24 Jul 2024 (Jiangsu Hengrui Medicine Company and Incyte Corporation), TSR-042 (Tesaro), and the PD-Ll / VISTA inhibitor CA-170 (Curis Inc.). In one embodiment, the immune checkpoint inhibitor is the PD-1 immune checkpoint inhibitor nivolumab (Opdivo®) administered in an effective amount for the treatment of Hodgkin lymphoma, melanoma, non-small cell lung cancer, hepatocellular carcinoma, or ovarian cancer. Nivolumab has been approved by the FDA for the use of metastatic melanoma, non-small cell lung cancer, and renal cell carcinoma. In another aspect of this embodiment, the immune checkpoint inhibitor is the PD-1 immune checkpoint inhibitor pembrolizumab (Keytruda®) administered in an effective amount for the treatment of melanoma, non-small cell lung cancer, small cell lung cancer, head and neck cancer, or urothelial cancer. In an additional aspect of this embodiment, the immune checkpoint inhibitor is the PD-1 immune checkpoint inhibitor pidilizumab (Medivation) administered in an effective amount for refractory diffuse large B~cell lymphoma (DLBCL) or metastatic melanoma. In one embodiment, the immune checkpoint inhibitor is a PD-L1 inhibitor that blocks the 15 interaction of PD-1 and PD-L1 by binding to the PD-L1 receptor, and in turn inhibits immune suppression. PD-L1 inhibitors include, but are not limited to, atezolizumab, durvalumab, KN035CA-170 (Curis Inc.), and LY3300054 (Eli Lilly). In one embodiment, thePD-Ll inhibitor is atezolizumab. In one embodiment, the PD-L1 inhibitor blocks the interaction between PD-L1 and CD80 to inhibit immune suppression. 20         In one embodiment, the immune checkpoint inhibitor is the PD-L1 immune checkpoint inhibitor atezolizumab (Tecentriq®) administered in an effective amount for the treatment of metastatic bladder cancer, metastatic melanoma, metastatic non-small cell lung cancer, or metastatic renal cell carcinoma. In another aspect of this embodiment, the immune checkpoint inhibitor is durvalumab (AstraZeneca and Medlmmune) administered in an effective amount for 25 the treatment of non-small cell lung cancer or bladder cancer. In yet another aspect of the embodiment, the immune checkpoint inhibitor is KN035 (Alphamab) administered in an effective amount for the treatment of PD-L1 positive solid tumors. An additional example of a PD-L1 immune checkpoint inhibitor is BMS-936559 (Bristol-Myers Squibb), although clinical trials with this inhibitor have been suspended as of 2015. 30          In one aspect of this embodiment, the immune checkpoint inhibitor is a CTLA-4 immune checkpoint inhibitor that binds to CTLA-4 and inhibits immune suppression. CTLA-4 inhibitors 2024205055 . 24 Jul 2024 include, but are not limited to, ipilimumab, tremelimumab (AstraZeneca and Medlmmune), AGEN1884 and AGEN20M (Agenus). In one embodiment, the CTLA-4 immune checkpoint inhibitor is ipilimumab (Yervoy®) administered in an effective amount for the treatment of metastatic melanoma, adjuvant melanoma, or non-small cell lung cancer. In another embodiment, the immune checkpoint inhibitor is a LAG-3 immune checkpoint inhibitor. Examples of LAG-3 immune checkpoint inhibitors include, but are not limited to, BMS-986016 (Bristol-Myers Squibb), GSK283I781 (GlaxoSmithKline), IMP321 (Prima BioMed), LAG525 (Novartis), and the dual PD-1 and LAG-3 inhibitor MGD013 (MacroGenics). In yet another aspect of this embodiment, the immune checkpoint inhibitor is a TIM-3 immune checkpoint inhibitor. A specific TIM-3 inhibitor includes, but is not limited to, TSR-022 (Tesaro). Other immune checkpoint inhibitors for use in the invention described herein include, but are not limited to, B7-H3 / CD276 immune checkpoint inhibitors such as MGA217, indoleamine 2,3-dioxygenase (IDO) immune checkpoint inhibitors such as Indoximod and INCB024360, killer 15 immunoglobulin-like receptors (KIRs) immune checkpoint inhibitors such as Lirilumab (BMS-986015), carcinoembryonic antigen cell adhesion molecule (CEACAM) inhibitors (e.g., CEACAM-1, -3 and / or -5). Exemplary anti-CEACAM-1 antibodies are described in WO 2010 / 125571, WO 2013 / 082366 and WO 2014 / 022332, e.g., a monoclonal antibody 34B1, 26H7, and 5F4; or a recombinant form thereof, as described in, e.g., US 2004 / 0()47858, U.S. Pat. No. 20   7,132,255 and WO 99 / 052552. In other embodiments, the anti-CEACAM antibody binds to CEACAM-5 as described in, e.g., Zheng et al. PLoS One. 2010 September 2; 5(9). pii: el2529 (DOI:10:1371 / joumal.pone.0021146), or cross-reacts with CEACAM-1 and CEACAM-5 as described in, e.g., WO 2013 / 054331 and US 2014 / 0271618. Still other checkpoint inhibitors can be molecules directed to B and T lymphocyte attenuator molecule (BTLA), for example as 25 described in Zhang et al., Monoclonal antibodies to B and T lymphocyte attenuator (BTLA) have no effect on in vitro B cell proliferation and act to inhibit in vitro T cell proliferation when presented in a cis, but not trans, format relative to the activating stimulus, Clin Exp Immunol. 2011 Jan; 163(1): 77-87. As contemplated herein, G1T38, or a pharmaceutically acceptable salt thereof, is 30 administered in an oral dosage form and can be in combination with any standard 2024205055 . 24 Jul 2024 chemotherapeutic agent treatment modality, in further combination with an immune checkpoint inhibitor. In one embodiment, the chemotherapeutic agent is toxic to immune effector cells. In one embodiment the chemotherapeutic agent inhibits cell growth. In one embodiment, the cytotoxic chemotherapeutic agent administered is a DNA damaging chemotherapeutic agent. In one embodiment, the chemotherapeutic agent is a protein synthesis inhibitor, a DNA-damaging chemotherapeutic, an alkylating agent, a topoisomerase inhibitor, an RNA synthesis inhibitor, a DNA complex binder, a thiolate alkylating agent, a guanine alkylating agent, a tubulin binder, DNA polymerase inhibitor, an anticancer enzyme, RAC1 inhibitor, thymidylate synthase inhibitor, oxazophosphorine compound, integrin inhibitor such as cilengitide, camptothecin or homocamptothecin, antifolate or a folate antimetabolite. In one embodiment the additional therapeutic agent is trastuzumab. In one embodiment the additional therapeutic agent is lapatinib. In one embodiment the compound of the present invention is dosed with 2, 3, or 4 additional therapeutic agents. In one embodiment there are 2 15 additional therapeutic agents. In one embodiment the two additional therapeutic agents are lapatinib and trastuzumab. In one embodiment the additional therapeutic agent is osimertinib. In one embodiment the additional therapeutic agent is alectinib. In one embodiment the additional therapeutic agent is a MEK inhibitor. 20          In one embodiment the additional therapeutic agent is an Androgen Receptor ligand. In one embodiment the additional therapeutic agent is a BTK inhibitor. In one embodiment the additional therapeutic agents are a MEK inhibitor and a RAF inhibitor In one embodiment the additional therapeutic agent is a RAF inhibitor. 25          In one embodiment the additional therapeutic agent is regorafenib. In one embodiment the MEK inhibitor is Binimetinib, Selumetinib, Cl-040, PD-325901, PD035901, or TAK-733. In another embodiment the MEK inhibitor is Tramatenib, U0126-EtOH, PD98059, Pimasertib, BIX 02188, AZD8330, PD318088, SL-327, Refametinib, Myricetin, BI-847325, Cobimetinib, APS-2-79 HC1, or GDC-0623. 2024205055 . 24 Jul 2024 In one embodiment the RAF inhibitor is PLX-4720, Dabrafenib, GDC-0879, Lifrafenib, CCT196969, RAF265, AZ 628, NVP-BHG712, SB590885, ZM 336372, Sorafenib, GW5074, TAK-632, CEP-32496, Encorafenib, PLX7904, LY3009120, ROS 126766, orMLN2480. In one embodiment the BTK inhibitor is CC-292, CNX-774, RN486, LFM-AI3, ONO-4059, Acalabrutinib, or CGI746. In one embodiment the Androgen Receptor ligand is MK-2866, Apalutamide, Andarine, Boldenone, testosterone enanthate, dihydrotestosterone, Galertone, dehydroepiandrosterone, cyproterone acetate, megestrol acetate, epi androsterone, AZD3514, spironolactone, chloromadinone acetate, ODM-201, EPI-001. In one embodiment the EGFR inhibitor is Lapatinib, Afatinib, Neratinib, Catertinib, AG-490, CP-724714, Dacomitnib, WZ4002, Sapitinib, CUDC-101, AG-1478, PD153035 HC1, Pelitinib, AC480, AEE788, AP26113, OSI-420, WZ3146, WZ8040, AST-1306, Rociletinib, Genisten, Varlitinib, Icotinib, TAK-285, WHI-P154, Daphnetin, PD168393, Tyrphostin 9, CNX-2006, AG-18, Cetuximab, Nazartinib, NSC228155, AZ5104, Poziotnib, AZD3759, Lifirafenib, 15   Olmutinib, Erlotinib, Naquotinib, EAI045, or CL-387785. Cytotoxic, DNA-damaging chemotherapeutic agents tend to be non-specific and, particularly at high doses, toxic to normal, rapidly dividing cells such as HSPC and immune effector cells. As used herein the term “DNA-damaging” chemotherapy or chemotherapeutic agent refers to treatment with a cytostatic or cytotoxic agent (i.e., a compound) to reduce or 20 eliminate the growth or proliferation of undesirable cells, for example cancer cells, wherein the cytotoxic effect of the agent can be the result of one or more of nucleic acid intercalation or binding, DNA or RNA alkylation, inhibition of RNA or DNA synthesis, the inhibition of another nucleic acid-related activity (e.g., protein synthesis), or any other cytotoxic effect. Such compounds include, but are not limited to, DNA damaging compounds that can kill cells. “DNA 25 damaging” chemotherapeutic agents include, but are not limited to, alkylating agents, DNA intercalators, protein synthesis inhibitors, inhibitors of DNA or RNA synthesis, DNA base analogs, topoisomerase inhibitors, telomerase inhibitors, and telomeric DNA binding compounds. For example, alkylating agents include alkyl sulfonates, such as busulfan, improsulfan, and piposulfan; aziridines, such as a benzodizepa, carboquone, meturedepa, and uredepa; ethylenimines and 30 methylmelamines, such as altretamine, triethylenemelamine, triethylenephosphoramide, triethylenethiophosphoramide, and trimethylol melamine; nitrogen mustards such as chlorambucil, 2024205055 . 24 Jul 2024 chiomaphazine, cyclophosphamide, estramustine, mechlorethamine, mechlorethamine oxide hydrochloride, melphalan, novembichine, phenesterine, prednimustine, trofosfamide, and uracil mustard, and nitroso ureas, such as carmustine, chlorozotocin, fotemustine, lomustine, nimustine, and ranimustine. Other DNA-damaging chemotherapeutic agents include daunorubicin, doxorubicin, idarubicin, epirubicin, mitomycin, and streptozocin. Chemotherapeutic antimetabolites include gemcitabine, mercaptopurine, thioguanine, cladribine, fludarabine phosphate, fluorouracil (5-FU), floxuridine, cytarabine, pentostatin, methotrexate, azathioprine, acyclovir, adenine p-l-D-arabinoside, amethopterin, aminopterin, 2-aminopurine, aphidicolin, 8-azaguanine, azaserine, 6-azauracil, 2'-azido-2'-deoxynucleosides, 5-bromodeoxycytidine, cytosine P-l-D-arabinoside, di azooxynorleucine, dideoxynucleosides, 5-fluorodeoxycytidine, 5-fluorodeoxyuridine, and hydroxyurea. Chemotherapeutic protein synthesis inhibitors include abrin, aurintricarboxylic acid, chloramphenicol, colicin E3, cycloheximide, diphtheria toxin, edeine A, emetine, erythromycin, ethionine, fluoride, 5-fluorotryptophan, fusidic acid, guanylyl methylene diphosphonate and 15 guanylyl imidodiphosphate, kanamycin, kasugamycin, kirromycin, and O-methyl threonine. Additional protein synthesis inhibitors include modeccin, neomycin, norvaline, pactamycin, paromomycine, puromycin, ricin, shiga toxin, showdomycin, sparsomycin, spectinomycin, streptomycin, tetracycline, thiostrepton, and trimethoprim. Inhibitors of DNA synthesis, include alkylating agents such as dimethyl sulfate, nitrogen 20 and sulfur mustards; intercalating agents, such as acridine dyes, actinomycins, anthracenes, benzopyrene, ethidium bromide, propidium diiodide-intertwining; and other agents, such as distamycin and netropsin. Topoisomerase inhibitors, such as irinotecan, teniposide, coumermycin, nalidixic acid, novobiocin, and oxolinic acid; inhibitors of cell division, including colcemide, mitoxantrone, colchicine, vinblastine, and vincristine; and RNA synthesis inhibitors including 25 actinomycin D, a-amanitine and other fungal amatoxins, cordycepin (3'-deoxyadenosine), dichlororibofuranosyl benzimidazole, rifampicine, streptovaricin, and streptolydigin also can be used as the DNA damaging compound. In one embodiment the chemotherapeutic agent is a DNA complex binder such as camptothecin, or etoposide; a thiolate alkylating agent such as nitrosourea, BCNU, CCNU, ACNU, 30 or fotesmustine; a guanine alkylating agent such as temozolomide, a tubulin binder such as vinblastine, vincristine, vinorelbine, vinflunine, cryptophycin 52, halichondrins, such as 2024205055 . 24 Jul 2024 halichondrin B, dolastatins, such as dolastatin 10 and dolastatin 15, hemiasterlins, such as hemiasterlin A and hemiasterlin B, colchicine, combrestatins, 2-methoxyestradiol, E7010, paclitaxel, docetaxel, epothilone, discodermolide; a DNA polymerase inhibitor such as cytarabine, an anticancer enzyme such as asparaginase; a Rael inhibitor such as 6-thioguanine; a thymidylate synthase inhibitor such as capecitabine or 5-FU; a oxazophosphorine compound such as Cytoxan; a integrin inhibitor such as cilengitide; an antifolate such as pralatrexate; a folate antimetabolite such as pemetrexed, or a camptothecin or homocamptothecin such as diflomotecan. In one embodiment the topoisomerase inhibitor is a type I inhibitor. In another embodiment the topoisomerase inhibitor is a type II inhibitor. Other DNA-damaging chemotherapeutic agents whose toxic effects can be mitigated by the presently disclosed selective CDK4 / 6 inhibitors include, but are not limited to, cisplatin, hydrogen peroxide, carboplatin, procarbazine, ifosfamide, bleomycin, plicamycin, taxol, transplatinum, thiotepa, oxaliplatin, and the like, and similar acting-type agents. In one embodiment, the DNA damaging chemotherapeutic agent is selected from the group consisting of 15 cisplatin, carboplatin, camptothecin, and etoposide. Other suitable chemotherapeutic agents include, but are not limited to, radioactive molecules, toxins, also referred to as cytotoxins or cytotoxic agents, which includes any agent that is detrimental to the viability of cells, agents, and liposomes or other vesicles containing chemotherapeutic compounds. General anticancer pharmaceutical agents include: Vincristine 20 (Oncovin®), liposomal vincristine (Marqibo®), Cytarabine (cytosine arabinoside, ara-C, or Cytosar®), L-asparaginase (El spar®) or PEG-L-asparaginase (pegaspargase or Oncaspar®), Etoposide (VP-16), Teniposide (Vumon®), 6-mercaptopurine (6-MP orPurinethol®), Prednisone, and Dexamethasone (Decadron). Examples of additional suitable chemotherapeutic agents include but are not limited to 5-fluorouracil, dacarbazine, alkylating agents, anthramycin (AMC)), anti-25 mitotic agents, cis-dichlorodiamine platinum (II) (DDP) cisplatin), diamino dichloro platinum, anthracyclines, antibiotics, antimetabolites, asparaginase, BCG live (intravesical), bleomycin sulfate, calicheamicin, cytochalasin B, dactinomycin (formerly actinomycin), daunorubicin HC1, daunorubicin citrate, denileukin diftitox, dihydroxy anthracin dione, Docetaxel, doxorubicin HCI, E. coli L-asparaginase, Erwinia L-asparaginase, etoposide citrovorum factor, etoposide phosphate, 30 gemcitabine HCI, idarubicin HCI, interferon a~2b, irinotecan HCI, maytansinoid, mechlorethamine HCI, melphalan HCI, mithramycin, mitomycin C, mitotane, polifeprosan 20 with 2024205055 . 24 Jul 2024 carmustine implant, procarbazine HO, streptozotocin, teniposide, thiotepa, topotecan HO, valrubicin, vinblastine sulfate, vincristine sulfate, and vinorelbine tartrate. Additional cytotoxic chemotherapeutic agents for use with the present invention include: epirubicin, abraxane, taxotere, epothilone, tafluposide, vismodegib, azacytidine, doxifluridine, vindesine, and vinorelbine. In one embodiment, the chemotherapeutic agent is not an aromatase inhibitor. In one embodiment, the chemotherapeutic agent is not a steroid. In one embodiment, the chemotherapeutic agent is not a BCR-ABL inhibitor. In one embodiment, the chemotherapeutic agent is a DNA complex binder. In one embodiment, the chemotherapeutic agent is a tubulin binder. In one embodiment, the chemotherapeutic agent is an alkylating agent. In one embodiment, the chemotherapeutic agent is a thiolate alkylating agent. Additional chemotherapeutic agents that may be used as described herein may include 2-methoxyestradiol or 2ME2, finasunate, etaracizumab (MEDI-522), HLL1, huN901-DMl, 15 atiprimod, saquinavir mesylate, ritonavir, nelfmavir mesylate, indinavir sulfate, plitidepsin, P27600, tipifamib, lenalidomide, thalidomide, pomalidomide, simvastatin, and celecoxib. Chemotherapeutic agents useful in the present invention include, but are not limited to, Trastuzumab (Herceptin®), Pertuzumab (Perjeta™), Lapatinib (Tykerb®), Gefitinib (Iressa®), Erlotinib (Tarceva®), Cetuximab (Erbitux®), Panitumumab (Vectibix®), Vandetanib 20 (Caprelsa®), Vemurafenib (Zelboraf®), Vorinostat (Zolinza®), Romidepsin (Istodax®), Bexarotene (Targretin®), Alitretinoin (Panretin®), Tretinoin (Vesanoid®), Carfilzomib (KyprolisIM), Pralatrexate (Folotyn®), Bevacizumab (Avastin®), Ziv-aflibercept (Zaltrap®), Sorafenib (Nexavar®), Sunitinib (Sutent®), Pazopanib (Votrient®), Regorafenib (Stivarga®), and Cabozantinib (Cometriq™). 25          Additional chemotherapeutic agents contemplated include, but are not limited to, a calcineurin inhibitor, e.g. a cyclosporin or an ascomycin, e.g. Cyclosporin A (Neoral®), FK506 (tacrolimus), pimecrolimus, a mTOR inhibitor, e.g. rapamycin or a derivative thereof, e.g. Sirolimus (Rapamune®), Everolimus (Certican®), temsirolimus, zotarolimus, biolimus-7, biolimus-9, a rapalog, e.g. ridaforolimus, campath 1H, a SIP receptor modulator, a dual mTORCl 30 and mTORC2 inhibitor, eg. Vistusertib (AZD2014), e.g. fingolimod or an analogue thereof, an anti IL-8 antibody, mycophenolic acid or a salt thereof, e.g. sodium salt, or a prodrug thereof, e.g. 2024205055 . 24 Jul 2024 Mycophenolate Mofetil (CellCept®), OKT3 (Orthoclone OKT3®), Prednisone, ATGAM®, Thymoglobulin®, Brequinar Sodium, OKT4, T10B9.A-3A, 33B3.1, 15-deoxy spergualin, tresperimus, Leflunomide Arava®, anti-CD25, anti-IL2R, Basiliximab (Simulect®), Daciizumab (Zenapax®), mizoribine, dexamethasone, ISAtx-247, SDZ ASM 981 (pimecrolimus, Elidel®), Abatacept, belatacept, LFA31g, etanercept (sold as Enbrel® by ImmuneXcite), adalimumab (Humira®), infliximab (Remicade®), an anti-LFA-1 antibody, natalizumab (Antegren®), Enlimomab, gavilimomab, Golimumab, antithymocyte immunoglobulin, siplizumab, Alefacept, efalizumab, Pentasa, mesalazine, asacol, codeine phosphate, benorylate, fenbufen, naprosyn, diclofenac, etodolac, indomethacin, dasatinib (Sprycel®) nilotinib (Tasigna®), bosutinib (Bosulif®), Imatinib mesylate (Gleevec®) and ponatinib (Iclusig™) amifostine, dolasetron mesylate, dronabinol, epoetin-a, etidronate, filgrastim, fluconazole, goserelin acetate, gramicidin D, granisetron, leucovorin calcium, lidocaine, Mesna, ondansetron HC1, pilocarpine HO, porfimer sodium, vatalanib, 1-dehydrotestosterone, allopurinol sodium, Betamethasone, sodium phosphate and betamethasone acetate, calcium leucovorin, conjugated estrogens, Dexrazoxane, 15 Dibromomannitol, esterified estrogens, estradiol, estramustine phosphate sodium, ethinyl estradiol, flutamide, folinic acid, glucocorticoids, leuprolide acetate, levamisole HC1, medroxyprogesterone acetate, megestrol acetate, methyltestosterone, nilutamide, octreotide acetate, pamidronate disodium, procaine, propranolol, testolactone, tetracaine, toremifene citrate, and sargramostim. 20          In one embodiment, the chemotherapeutic agent is an estrogen receptor ligands such as tamoxifen, raloxifene, fulvestrant, anordrin, bazedoxifene, broparestriol, chlorotrianisene, clomiphene citrate, cyclofenil, lasofoxifene, ormeloxifene, or toremifene; an androgen receptor ligand such as bicalutamide, enzalutamide, apalutamide, cyproterone acetate, chlormadinone acetate, spironolactone, canrenone, drospirenone, ketoconazole, topilutamide, abiraterone acetate, 25 or cimetidine; an aromatase inhibitor such as letrozole, anastrozole, or exemestane; an antiinflammatory such as prednisone; an oxidase inhibitor such as allopurinol; an anticancer antibody, an anticancer monoclonal antibody; an antibody against CD40 such as lucatumumab or dacetuzumab; an antibody against CD20 such as rituximab; an antibody that binds CD52 such as alemtuzumab; an antibody that binds integrin such as volociximab or natalizumab; an antibody 30 against interleukin-6 receptor such as tocilizumab; an interleukin-2 memetic such as aldesleukin, an antibody that targets IGF1 like figitumumab; an antibody that targets DR4 such as 2024205055 . 24 Jul 2024 mapatumumab; an antibody that targets TRAIL-R2 such as lexatumumab or dulanermin; a fusion protein such as atacicept; a B cell inhibitor such as atacicept; a proteasome inhibitor such as carfilzomib, bortezomib, or marizomib; a HSP90 inhibitor such as tanespimycin; a HDAC inhibitor such as vorinostat, belinostat or panobinostat; a MAPK ligand such as talmapimod; a PKC inhibitor such as enzastaurin; a HER2 receptor ligand such as trastuzumab, lapatinib, or pertuzumab; an EGFR inhibitor such as gefitinib, erlotinib, cetuximab, panitumumab, or vandetanib; a natural product such as romidepsin; a retinoid such as bexarotene, tretinoin, or alitretinoin; a receptor tyrosine kinase (RTK) inhibitor such as sunitinib, regorafenib, or pazopanib; or a VEGF inhibitor such as ziv-aflibercept, bevacizumab or dovitinib. In one embodiment, G1T38 is further combined with the use of hematopoietic growth factors including, but not limited to, granulocyte colony stimulating factor (G-CSF, for example, sold as Neupogen® (filgrastim), Neulasta® (peg-filgrastim), or lenograstim), granulocytemacrophage colony stimulating factor (GM-CSF, for example sold as molgramostim and sargramostim (Leukine®)), M-CSF (macrophage colony stimulating factor), Thrombopoietin 15 (megakaryocyte growth development factor (MGDF), for example sold as Romiplostim® and Eltrombopag®) interleukin (IL)-12, interleukin-3, interleukin-11 (adipogenesis inhibiting factor or oprelvekin), SCF (stem cell factor, steel factor, kit-ligand, or KL) and erythropoietin (EPO), and their derivatives (sold as for example epoetin-a as Darbepoetin, Epocept, Nanokine, Epofit, Epogen, Eprex, and Procrit; epoetin-P sold as for example NeoRecormon, Recormon and Micera), 20 epoetin-delta (sold as for example Dynepo), epoetin- omega (sold as for example Epomax), epoetin zeta (sold as for example Sil apo and Retacrit) as well as for exampl e Epocept, Epotrust, Erypro Safe, Repoitin, Vintor, Epofit, Erykine, Wepox, Espogen, Relipoietin, Shanpoietin, Zyrop and EPIAO). Additional chemotherapeutic agents contemplated herein, particularly in the treatment of 25 abnormal tissue of the female reproductive system such as breast, ovarian, endometrial, or uterine cancer include an estrogen inhibitor including but not limited to a SERM (selective estrogen receptor modulator), a SERB (selective estrogen receptor degrader), a complete estrogen receptor degrader, or another form of partial or complete estrogen antagonist. Partial anti-estrogens like raloxifene and tamoxifen retain some estrogen-like effects, including an estrogen-like stimulation 30 of uterine growth, and also, in some cases, an estrogen-like action during breast cancer progression which actually stimulates tumor growth. In contrast, fulvestrant, a complete anti-estrogen, is free 2024205055 . 24 Jul 2024 of estrogen-like action on the uterus and is effective in tamoxifen-resistant tumors. Non-limiting examples of anti-estrogen compounds are provided in WO 2014 / 19176 assigned to Astra Zeneca, WO2013 / 090921, WO 2014 / 203129, WO 2014 / 203132, and US2013 / 0178445 assigned to Olema Pharmaceuticals, and U.S. Patent Nos. 9,078,871, 8,853,423, and 8,703,810, as well as US 2015 / 0005286, WO 2014 / 205136, and WO 2014 / 205138. Additional non-limiting examples of anti-estrogen compounds include: SERMS such as anordrin, bazedoxifene, broparestriol, clomiphene citrate, cyclofenil, lasofoxifene, ormeloxifene, raloxifene, tamoxifen, toremifene, and fulvestrant; aromatase inhibitors such as aminoglutethimide, testolactone, anastrozole, exemestane, fadrozole, formestane, and letrozole; and antigonadotropins such as leuprorelin, cetrorelix, allyl estrenol, chloromadinone acetate, delmadinone acetate, dydrogesterone, medroxyprogesterone acetate, megestrol acetate, nomegestrol acetate, nor ethisterone acetate, progesterone, and spironolactone. Additional chemotherapeutic agents contemplated herein, particularly in the treatment of abnormal tissue of the male reproductive system such as prostate or testicular cancer, include, but 15 are not limited to, an androgen (such as testosterone) inhibitor including but not limited to a selective androgen receptor modulator, a selective androgen receptor degrader, a complete androgen receptor degrader, or another form of partial or complete androgen antagonist. In one embodiment, the prostate or testicular cancer is androgen-resistant. Non-limiting examples of antiandrogen compounds are provided in WO 2011 / 156518 and US Patent Nos. 8,455,534 and 20   8,299,112. Additional non-limiting examples of anti-androgen compounds include: chlormadinone acetate, spironolactone, canrenone, drospirenone, ketoconazole, topilutamide, abiraterone acetate, and cimetidine. The chemotherapeutic agent may include a kinase inhibitor, including but not limited to a phosphoinositide 3-kinase (PI3K) inhibitor, a Bruton’s tyrosine kinase (BTK) inhibitor, or a spleen 25 tyrosine kinase (Syk) inhibitor, or a combination thereof. PI3k inhibitors are well known. Examples of PI3 kinase inhibitors include but are not limited to Wortmannin, demethoxyviridin, perifosine, idelalisib, pictilisib, Palomid 529, ZSTK474, PWT33597, CUDC-907, and AEZS-136, duvelisib, GS-9820, GDC-0032 (2-[4-[2-(2-Isopropyl-5-methyl-l,2,4-triazol-3-yl)-5,6-dihydroimidazo[l,2-d][l,4]benzoxazepin-9- 30 yl]pyrazol-l-yl]-2-methylpropanamide), MLN-1117 ((2R)-l-Phenoxy-2-butanyl hydrogen (S)-methylphosphonate; or Methyl(oxo) {[(2R)-l-phenoxy-2-butanyl]oxy(phosphonium)), BYL-719 2024205055 . 24 Jul 2024 ((2S)-Nl-[4-Methyl-5-[2-(2,2,2-trifluoro-l,l-dimethylethyl)-4-pyridinyl]-2-thiazolyl]-l,2- pyrrolidinedicarboxamide), GSK2126458 (2,4-Difluoro-N-{2-(methyloxy)-5-[4-(4-pyridazinyl)-6-quinolinyl]-3-pyridinyl}benzenesulfonamide), TGX-221 ((±)-7-Methyl-2-(morpholin-4-yl)-9-(l-phenylaminoethyl)-pyrido[l,2-a]-pyrimidin-4-one), GSK2636771 (2-Methyl-l-(2-methyl-3-(trifluoromethyl)benzyl)-6-morpholino4H-benzo[d]imidazole-4-carboxylic                 acid dihydrochloride), KIN-193 ((R)-2-((l-(7-methyl-2-morpholino-4-oxo-4H-pyrido[l,2-a]pyrimidin-9-yl)ethyl)amino)benzoic acid), TGR-1202 / RP5264, GS-9820 ((S)- l-(4-((2-(2-aminopyrimidin-5-yl)-7-methyl-4-mohydroxypropan-1 -one), GS-1101 (5-fluoro-3-phenyl-2-([S)]-l-[9H-purin-6-ylamino]-propyl)-3H-quinazolin-4-one), AMG-319, GSK-2269557, SAR245409 (N-(4-(N-(3-((3,5-dimethoxyphenyl)amino)quinoxalin-2-yl)sulfamoyl)phenyl)-3-methoxy-4 methylbenzamide), BAY80-6946 (2-amino-N-(7-methoxy-8-(3-morpholinopropoxy)-2,3-dihydroimidazo[l,2-c]quinaz), AS 252424 (5-[l-[5-(4-Fluoro-2-hydroxy-phenyl)-furan-2-yl]-meth-(Z)-ylidene]-thiazolidine-2,4-dione), CZ 24832 (5-(2-amino-8-fluoro-[l,2,4]triazolo[l,5-a]pyridin-6-yI)-N-tert-butylpyridine-3-sulfonamide),  buparlisib  (5-(2,6-Di(4-morpholinyl)-4- 15   pyrimidinyl]-4-(trifluoromethyl)-2-pyridinamine),    GDC-0941    (2-(lH-Indazol-4-yl)-6-((4- (methylsulfonyl)-l-piperazinyl]methyl]-4-(4-morpholinyl)thieno[3,2-d]pyrimidine), GDC-0980 ((S)-l-(4-((2-(2-aminopyrimidin-5-yl)-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6 yl)methyl)piperazin-l-yl)-2-hydroxypropan-l-one (also known as RG7422)),   SF1126 ((8S, 14S, 17S)-14-(carboxymethyl)-8-(3-guanidinopropyl)-17-(hydroxymethyl)-3,6,9,12,15-20   pentaoxo-1 -(4-(4-oxo-8-phenyl-4H-chromen-2-yl)morpholino-4-ium)-2-oxa-7,10,13,16- tetraazaoctadecan-18-oate),            PF-052123 84            (N-(4-[(4-(Dimethyl amino)-1 - piperi dinyl]carbonyl]phenyl]-N'-[4-(4,6-di-4-morpholinyl-l,3,5-triazin-2-yl)phenyl]urea), LY3023414, BEZ235 (2-Methyl-2-{4-[3-methyl-2-oxo-8-(quinolin-3-yl)-2,3-dihydro-lH-imidazo[4,5-c]quinolin-l-yl]phenyl}propanenitrile),         XL-765         (N-(3-(N-(3-(3,5- 25 dimethoxyphenylamino)quinoxalin-2-yl)sulfamoyl)phenyl)-3-methoxy-4-methylbenzamide), and GSK1059615 (5-[[4-(4-Pyridinyl)-6-quinolinyl]methylene]-2,4-thiazolidenedione), PX886 ([(3aR,6E,9S,9aR, 10R, 1 laS)-6-[[bis(prop-2-enyl)amino]methylidene]-5-hydroxy-9-(methoxymethyl)-9a, 1 la-dimethyl-1,4,7-triox 0-2,3,3a,9,10,ll-hexahydroindeno[4,5h]isochromen-10-y 1] acetate (also known as sonolisib)), and the structure described in WO2014 / 071109. 30          BTK inhibitors are well known. Examples of BTK inhibitors include ibrutinib (also known as PCI-32765)(ImbruvicaTM)     (1-((3 R)-3-[4-amino-3-(4-phenoxy-phenyl)pyrazolo[3,4- 2024205055 . 24 Jul 2024 d]pyriniidin-l-yl]piperidin-1-yl]prop-2-en-l-one), dianilinopyrimidine-based inhibitors such as AVL-101 and AVL-291 / 292 (N-(3-((5-fluoro-2-((4-(2-methoxyethoxy)phenyl)amino)pyrimidin-4-yl)amino)phenyl)acrylamide) (Avila Therapeutics) (see US Patent Publication No 2011 / 0117073, incorporated herein in its entirety), dasatinib ([N-(2-chloro-6-methylphenyl)-2-(6-(4-(2-hydroxyethyl)piperazin-l-yl)-2-methylpyrimidin-4-ylamino)thiazole-5-carboxamide], LFM-A13 (alpha-cyano-beta-hydroxy-beta-methyl-N-(2,5-ibromophenyl) propenaniide), GDC-0834 ([R-N-(3-(6-(4-(l,4-dimethyl-3-oxopiperazin-2-yl)phenylamino)-4-methyl-5-oxo-4,5-dihydropyrazin-2-yl)-2-methylphenyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide], CGI-560 4-(tert-butyl)-N-(3-(8-(phenylamino)imidazo[l,2-a]pyrazin-6-yl)phenyl)benzamide, CGI-1746                        (4-(tert-butyl)-N-(2-methyl-3-(4-methyl-6-((4-(morpholine-4- carbonyl)phenyl)amino)-5-oxo-4,5-dihydropyrazin-2-yl)phenyl)benzamide), CNX-774 (4-(4-((4-((3-acrylamidophenyl)amino)-5-fluoropyrimidin-2-yl)amino)phenoxy)-N-methylpicolinamide), CTA056 (7-benzyl-l-(3-(piperidin-l-yl)propyl)-2-(4-(pyridin-4-yl)phenyr)-lH-imidazo[4,5-g]quinoxalin-6(5H)-one), GDC-0834   ((R)-N-(3-(6-((4-( 1,4-dimethyl-3-oxopiperazin-2- 15 yl)phenyl)amino)-4-methyl-5-oxo-4,5-dihydropyrazin-2-yl)-2-methylphenyl)-4,5,6,7- tetrahydrobenzo[b]thiophene-2-carboxamide), GDC-0837 ((R)-N-(3-(6-((4-( 1,4-dimethyl-3-oxopiperazin-2-yl)phenyl)amino)-4-methyl-5-oxo-4,5-dihydropyrazin-2-yl)-2-methylphenyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide), HM-71224, ACP-196, ONO-4059 (Ono Pharmaceuticals), PRT062607    (4-((3-(2H-l ,2,3-triazol-2-yl)phenyl)amino)-2-(((lR,2S)-2- 20 aminocyclohexyl)amino)pyrimidine-5-carboxamide hydrochloride), QL-47 (1 -(1 -acryloylindolin- 6-yl)-9-(l -methyl-1 H-pyrazol-4-yl)benzo[h] [ 1,6]naphthyridin-2(lH)-one), and RN486 (6-cyclopropyl-8-fluoro-2-(2-hydroxymethyl-3-{l-methyl-5-[5-(4-methyl-piperazin-l-yr)-pyridin-2-ylamino]-6-oxo-l,6-dihydro~pyridin-3-yl}-phenyl)-2H-isoquinolin-l-one), BGB-3111, and other molecules capable of inhibiting BTK activity, for example those BTK inhibitors disclosed 25 in Akinleye et ah, Journal of Hematology & Oncology, 2013, 6:59, the entirety of which is incorporated herein by reference, Syk inhibitors are well known, and include, for example, Cerdulatinib (4-(cyclopropylamino)-2-((4-(4-(ethylsulfonyl)piperazin-l-yl)phenyl)amino)pyrimidine-5-carboxamide), entospletinib (6-(lH-indazol-6-yl)-N-(4-morpholinophenyl)imidazo[l,2-30 a]pyrazin-8-amine), fostamatinib ([6-({ 5-Fluoro-2~[(3,4,5-trimethoxyphenyl)aniino]-4-pyrimidinyl}amino)-2,2-dimethyl-3-oxo-2,3-dihydro-4H-pyrido[3,2-b][l,4]oxazin-4-yl]methyl 2024205055 . 24 Jul 2024 dihydrogen phosphate), fostamatinib disodium salt (sodium (6-((5-fluoro-2-((3,4,5-trimethoxyphenyl)amino)pyrimidin-4-yl)amino)-2,2-dimethyl-3-oxo-2H-pyrido[3,2-b][l,4]oxazin-4(3H)-yl)methyl phosphate), BAY 61-3606 (2-(7-(3,4-Dimethoxyphenyl)-imidazo[l,2-c]pyrimidin-5-ylamino)-nicotinamide HC1),   RO9021   (6-[(lR,2S)-2-Amino- cyclohexylamino]-4-(5,6-dimethyl-pyridin-2-ylamino)-pyridazine-3-carboxylic acid amide), imatinib (Gleevec; 4-[(4-methylpiperazin-l-yl)methyl]-N-(4-methyl-3-{[4-(pyridin-3-yl)pyrimidin-2-yl]amino}phenyl)benzamide), staurosporine,    GSK143    (2-(((3 R,4R)-3- aminotetrahydro-2H-pyran-4-yl)amino)-4-(p-tolylamino)pyrimidine-5-carboxamide), PP2 (1-(tert-butyl)-3-(4-chlorophenyl)-lH-pyrazolo[3,4-d]pyrimidin-4-amine), PRT-060318    (2- (((lR,2S)-2-aminocyclohexyl)amino)-4-(m-tolylamino)pyrimidine-5-carboxamide), PRT-062607 (4-((3-(2H-l,2,3-triazol-2-yl)phenyl)amino)-2-(((lR,2S)-2-aminocyclohexyl)amino)pyrimidine-5-carboxamide         hydrochloride),         RI 12         (3,3'-((5-fluoropyrimidine-2,4- diyl)bis(azanediyl))diphenol), R348 (3-Ethyl-4-methylpyridine), R406 (6-((5-fluoro-2-((3,4,5-trimethoxyphenyl)amino)pyrimidin-4-yl)amino)-2,2-dimethyl~2H-pyrido[3,2~b][l,4]oxazin~ 15   3(4H)-one), YMI93306(see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643), 7-azaindole, piceatannol, ER-27319 (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chern. 2012, 55, 3614-3643 incorporated in its entirety herein), Compound D (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 20   55, 3614-3643 incorporated in its entirety herein), PRT060318 (see Singh et al. Discovery’ and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in its entirety herein), luteolin (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in its entirety herein), apigenin (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) 25 Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in its entirety herein), quercetin (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in its entirety herein), fisetin (see Singh et al. Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 36143643 incorporated in its entirety herein), myricetin (see Singh et al. Discovery and Development 30 of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in 2024205055 . 24 Jul 2024 its entirety herein), morin (see Singh et ah Discovery and Development of Spleen Tyrosine Kinase (SYK) Inhibitors, J. Med. Chem. 2012, 55, 3614-3643 incorporated in its entirety herein). The chemotherapeutic agent can also be a B-cell lymphoma 2 (Bcl-2) protein inhibitor. BCL-2 inhibitors are known in the art, and include, for example, ABT-199 (4-[4-[[2-(4-Chlorophenyl)-4,4-dimethylcyclohex-l-en-l-yl]methyl]piperazin-l-yl]-N-[[3-nitro-4-[[(tetrahydro-2H-pyran-4-yl)methyl]amino]phenyl]sulfonyl]-2-[(lH- pyrrolo[2,3-b]pyridin-5-yl)oxy]benzamide), ABT-737 (4-[4-[[2-(4-chlorophenyI)phenyl]methyl]piperazin-1 -yl]-N~[4-[[(2R)-4-(dimethylamino)-1 -phenylsulfanylbutan-2-yl]                               amino]-3- nitrophenyl]sulfonylbenzamide), ABT-263 ((R)-4-(4-((4'-chloro-4,4-dimethyl-3,4,5,6-tetrahydro-[1, r-biphenyl]-2-yl)methyl)piperazin-1-yl)-N-((4-((4-morpholino-l-(phenylthio)butan-2-yl)amino)-3((trifluoromethyl)sulfonyl)phenyl)sulfonyl)benzamide), GX15-070 (obatoclax mesylate, (2Z)-2-[(5Z)-5-[(3,5- dimethyl-lH-pyrrol-2-yl)methylidene]-4-methoxypyrrol-2-ylidene]indole; methanesulfonic acid))), 2-methoxy-antimycin A3, YC137 (4-(4,9-dioxo-4,9-dihydronaphtho[2,3-d]thiazol-2-ylamino)-phenyl ester), pogosin, ethyl 2-amino-6-bromo-4-(l-15 cyano-2-ethoxy-2-oxoethyl)-4H-chromene-3-carboxylate, Nilotinib-d3, TW-37 (N-[4-[[2-(l,l- Dimethylethyl)phenyl]sulfonyl]phenyl]-2,3,4-trihydroxy-5-[[2-(l- methylethyl)phenyl]methyl]benzamide), Apogossypolone (ApoG2), or G3139 (Oblimersen). Additional chemotherapeutic agents for use in the methods contemplated herein include, but are not limited to, midazolam, MEK inhibitors, RAS inhibitors, ERK inhibitors, ALK 20 inhibitors, HSP inhibitors (for example, HSP70 and HSP 90 inhibitors, or a combination thereof), RAF inhibitors, apoptotic compounds, topoisomerase inhibitors, AKT inhibitors, including but not limited to, MK-2206, GSK690693, Perifosine, (KRX-0401), GDC-0068, Triciribine, AZD5363, Honokiol, PF-04691502, and Miltefosine, or FLT-3 inhibitors, including but not limited to, P406, Dovitinib, Quizartinib (AC220), Amuvatinib (MP-470), Tandutinib (MLN518), ENMD-2076, and 25   KW-2449, or combinations thereof. Examples of MEK inhibitors include but are not limited to trametinib / GSK1120212 (N-(3-{3-Cyclopropyl-5-[(2-fluoro-4-iodophenyl)amino]-6,8-dimethyl-2,4,7-trioxo-3,4,6,7-tetrahydropyrido[4,3-d]pyrimidin-l(2H-yl}phenyl)acetamide), selumetinib (6-(4-bromo-2-chloroanilino)-7-fluoro-N-(2-hydroxyethoxy)~3-methylbenzimidazole-5- carboxami de), pimasertib / AS703026 / MSC19353 69 ((S)-N-(2,3 -dihydroxypropyl)-3-((2-fluoro-4- 30 iodophenyl)amino)isonicotinamide),    XL-518 / GDC-0973    (l-({3,4-difluoro-2-[(2-fluoro-4- iodophenyl)amino]phenyl }carbonyl)-3-[(2S)-piperi din-2 -yl]azetidin-3-ol), 2024205055 . 24 Jul 2024 refametinib / BAY869766 / RDEA119 (N-(3,4-difluoro-2-(2-fluoro-4-iodophenylamino)-6-methoxyphenyl)-1 -(2,3-dihydroxypropyl)cyclopropane-1 -sulfonamide), PD-0325901 (N-[(2R)-2,3-Dihydroxypropoxy]-3,4-difluoro-2-[(2-fluoro-4-iodophenyl)amino]-benzamide), TAK733 ((R)-3-(2,3-Dihydroxypropyl)-6-fluoro-5-(2-fluoro-4-iodophenylamino)-8- methylpyri do[2,3d]pyrimi dine-4,7(3H, 8 H )-d i one),  MEK162 / ARRY43 8162  (5 -[(4-Bromo-2- fluorophenyl)amino]-4-fluoro-N-(2-hydroxyethoxy)-1 -methyl- lH-benzimidazole-6 carboxamide),    R05126766    (3-[[3-Fluoro-2-(methylsulfamoylamino)-4-pyridyl]methyl]-4- methyl-7-pyrimidin-2-yloxychromen-2-one), WX-554, R04987655 / CH4987655 (3,4-difluoro-2-((2-fluoro-4-iodophenyl)amino)-N-(2-hydroxy ethoxy )-5-((3-oxo-l,2-oxazinan-2 yl)methyl)benzamide), or AZD8330 (2-((2-fluoro-4-iodophenyl)amino)-N-(2-hydroxyethoxy)-l,5-dimethyl-6-oxo-l,6-dihydropyridine-3-carboxamide). Examples of RAS inhibitors include but are not limited to Reolysin and siG12D LODER. Examples of ALK inhibitors include but are not limited to Crizotinib, AP26113, and LDK378. HSP inhibitors include but are not limited to Geldanamycin or 17-N-Allylamino-17-demethoxygeldanamycin (17AAG), and Radicicol. 15         Known ERK inhibitors include SCH772984 (Merck / Schering-Plough), VTX-11 e (Vertex), DEL-22379, Ulixertinib (BVD-523, VRT752271), GDC-0994, FR 180204, XMD8-92, and ERK5-1X-I Raf inhibitors are well known, and include, for example, Vemurafinib (N-[3-[[5-(4-Chlorophenyl)-lH-pyrTolo[2,3-b]pyridin-3-yl]carbonyl]-2,4-difluorophenyl]-l- 20 propanesulfonamide),            sorafenib            tosylate            (4-[4-[[4-chloro-3- (trifluoromethyl)phenyl]carbamoylamino]phenoxy]-N-methylpyridine-2-carboxamide;4-methylbenzenesulfonate), AZ628 (3-(2-cyanopropan-2-yl)-N-(4-methyl-3-(3-methyl-4-oxo-3,4-dihydroquinazolin-6-ylamino)phenyl)benzamide), NVP-BHG712   (4-methy 1-3 -(1 -methy 1-6- (pyridin-3-yl)-lH-pyrazolo[3,4-d]pyrimidin-4-ylamino)-N-(3- 25 (trifluoromethyl)phenyl)benzamide), RAF-265 (l-methyl-5-[2-[5-(trifluoromethyl)-lH-imidazol-2-yl]pyridin-4-yl]oxy-N-[4-(trifluoromethyl)phenyl]benzimidazol-2-amine), 2-Bromoaldisine (2-Bromo-6,7-dihydro-lH,5H-pyrrolo[2,3-c]azepine-4,8-dione), Raf Kinase Inhibitor IV (2-chloro-5-(2-phenyl-5-(pyridin-4-yl)-lH-imidazol-4-yl)phenol), and Sorafenib N-Oxide (4-[4-[[[[4-Chloro-3(trifluoroMethyl)phenyl]aMino]carbonyl]aMino]phenoxy]-N-Methyl- 30 2pyridinecarboxaMide 1-Oxide). 2024205055 . 24 Jul 2024 Known topoisomerase I inhibitors useful in the present invention include (S)-10-[(dimethylamino)methyl]-4-ethyl-4,9-dihydroxy-lH-pyrano[3i,4':6,7]indoiizino[l,2-b]quinoline-3,14(4H, 12H)-di one      monohydrochi ori de      (topotecan),      (S)-4-ethy 1 -4-hy droxy-1H- pyrano[3 ',4': 6,7]indolizino[ 1,2-b]quinoline-3,14-(4H, 12H)-dione   (camptothecin),   (1 S,9 S)-1 - Amino-9-ethyl-5-fluoro-l,2,3,9,12,15-hexahydro-9-hydroxy-4-methyl-10H,13H-benzo(de)pyrano(3', 4!: 6,7)indolizino( 1,2-b)quinoline-10,13 -di one       (exatecan), (7-(4- methylpiperazinomethylene)-10,l l-ethylenedioxy-20(S)-camptothecin (lurtotecan), or (S)-4 J 1-diethyl-3,4,l2,l4-tetrahydro-4-hydroxy-3,l4-dioxo1H-pyrano[3’,4’:6,7]-indolizino[l,2-b]quinolin-9-yl-[l,4’bipiperidine]-r-carboxylate (irinotecan), (R)-5-ethyl-9,10-difluoro-5-hydroxy-4,5-dihydrooxepino[3',4':6,7]indolizino[l,2-b]quinoline-3,15(lH,13H)-dione (diflomotecan),      (4 S)-11 -((E)-(( 1,1 -Dimethyl ethoxy )imino)methyl)-4-ethyl-4-hy droxy-1,12- dihydro-14H-pyrano(3',4':6,7)indolizino(l,2-b)quinoline-3,14(4H)-dione  (gi matecan),   (S)-8- ethyl-8-hydroxy-15-((4-methylpiperazin-l-yl)methyl)-ll,14-dihydro-2H-[l,4]dioxino[2,3-g]pyrano[3', 4': 6,7]indolizino[ 1,2-b]quinoli ne-9,12(3 H, 8H)-di one (lurtotecan), (4S)-4-Ethy 1-415 hydroxy-1 l-[2-[(l-methylethyl)amino]ethyl]-lH-pyrano[3?,4?:6,7]indolizino[l,2-b]quinoline- 3,14(4H, 12H)-dione   (belotecan), 6-((l,3-dihydroxypropan-2-yl)amino)-2,10-dihydroxy-12- ((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-12,13-dihydro-5H-indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7(6H)-dione (edotecarin), 8,9-dimethoxy-5-(2-N,N-dimethylaminoethyl)-2,3-methylenedioxy-5H-dibenzo(c,h)(l,6)naphthyridin-6-one 20 (topovale), benzo[6,7]indolizino[l,2-b]quinolin-l l(13H)-one (rosettacin), (S)-4-ethyl-4-hydroxy-1 l-(2-(trimethylsilyl)ethyl)-lH-pyrano[3',4':6,7]indolizino[l,2-b]quinoline-3,14(4H,12H)-dione (cositecan), tetrakis{(4S)-9-[([l,4'-bipiperidinyl]-r-carbonyl)oxy]-4,ll-diethyl-3,14-dioxo-3,4,12,14- tetrahydro-lH-pyrano[3',4':6,7]indolizino[l,2-b]quinolin-4-yl} N,N’,N",N"'-{methanetetrayltetrakis[methylenepoly(oxyethylene)oxy(l-oxoethylene)]}tetraglycinate 25 tetrahydrochloride (etirinotecan pegol), 10-hydroxy-camptothecin (HOCPT), 9-nitrocamptothecin (rubitecan), SN38 (7-ethyl-10-hy droxy camptothecin), and 10-hydroxy-9-nitrocamptothecin (CPT109), (R)-9-chloro-5-ethyl-5-hydroxy-10-methyl- 12-((4-methylpiperidin-1 -yl)methyl)-4,5-dihydrooxepino[3',4':6,7]indolizino[l,2-b]quinoline-3,15(lH,13H)-dione (elmotecan). In one embodiment, the chemotherapeutic agent is not an aromatase inhibitor. In one 30 embodiment, the chemotherapeutic agent is not an estrogen or androgen receptor agonist or antagonist. 2024205055 . 24 Jul 2024 In one embodiment, G1T38, or a pharmaceutical salt thereof, is administered in an oral dosage form and further combined with the use of hematopoietic growth factors including, but not limited to, granulocyte colony stimulating factor (G-CSF, for example, sold as Neupogen (filgrastim), Neulasta (peg-filgrastim), or lenograstim), granulocyte-macrophage colony stimulating factor (GM-CSF, for example sold as molgramostim and sargramostim (Leukine)), M-CSF (macrophage colony stimulating factor), Thrombopoietin (megakaryocyte growth development factor (MGDF), for example sold as Romiplostim and Eltrombopag) interleukin (IL)-12, interleukin-3, interleukin-11 (adipogenesis inhibiting factor or oprelvekin), SCF (stem cell factor, steel factor, kit-ligand, or KL) and erythropoietin (EPO), and their derivatives (sold as for example epoetin-a as Darbepoetin, Epocept, Nanokine, Epofit, Epogen, Eprex, and Procrit; epoetin-P sold as for example NeoRecormon, Recormon and Micera), epoetin-delta (sold as for example Dynepo), epoetin- omega (sold as for example Epomax), epoetin zeta (sold as for example Silapo and Retacrit) as well as for example Epocept, Epotrust, Erypro Safe, Repoitin, Vintor, Epofit, Erykine, Wepox, Espogen, Relipoietin, Shanpoietin, Zyrop and EPIAO). 15          In one embodiment, G1T38, or a pharmaceutical salt thereof, is administered in an oral dosage form and further combined with a CDK7 inhibitor. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abiraterone acetate (Zytiga) for the treatment of abnormal tissue of the male reproductive system, wherein the administration of Compound II Form B 20 provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abiraterone acetate (Zytiga) for the treatment of abnormal tissue of the male reproductive system, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) 25 ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abiraterone acetate (Zytiga) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-3 0   24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abiraterone 2024205055 . 24 Jul 2024 acetate (Zytiga) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mmJ) ratio of not greater than 1,25. In one embodiment, the mean steady state AUC(o-?.4ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of enzalutamide for the treatment of prostate cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of enzalutamide for the treatment of prostate cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss>(h*ng / mL)) / Absolute Neutrophil Count (cells / mmJ) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 15 combination with an effective amount of afatinib dimaleate (Gilotrif) for the treatment of nonsmall cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / rag dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of afatinib dimaleate (Gilotrif) for the treatment of non-small cell lung cancer, wherein the 20 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(0-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24SS) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alectinib (Alecensa) for the treatment of non-small cell 25 lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alectinib (Alecensa) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 30 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mmJ) ratio of not greater than 1.25. In one embodiment, the mean steady state yWC(o-24ss) is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ceritinib (Zykadia) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ceritinib (Zykadia) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of crizotinib (Xalkori) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of 15 crizotinib (Xalkori) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 20 combination with an effective amount of osimertinib (Tagrisso) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of osimertinib (Tagrisso) for the treatment of non-small cell lung cancer, wherein the administration 25 of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of brigatinib (Alunbrig) for the treatment of non-small cell 30 lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective 2024205055 . 24 Jul 2024 amount of Compound II Form B is administered in combination with an effective amount of brigatinib (Alunbrig) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of lorlatinib for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of lorlatinib for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUG0-24 Ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 15          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of lapatinib ditosylate for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of lapatinib 20 ditosylate for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUG0-24 Ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 25 combination with an effective amount of lapatinib ditosylate for the treatment of HER2+ breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUQo-?4ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of lapatinib ditosylate for the treatment of HER2+ breast cancer, wherein the administration of Compound II 30 Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute 2024205055 . 24 Jul 2024 Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of PF7775 for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of PF7775 for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of solid tumors, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg 15   dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of solid tumors, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC<o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum 20 Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of abnormal tissue of the female reproductive system, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an 25   effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of abnormal tissue of the female reproductive system, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of breast cancer, wherein the 2024205055 . 24 Jul 2024 administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of alpelisib for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUG0-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of copanlisib hydrochloride (Aliqopa) for the treatment of lymphoma, wherein the administration of Compound II Form B provides a (mean steady state ALtC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of copanlisib hydrochloride (Aliqopa) for the treatment of lymphoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC<o-24 15 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of copanlisib hydrochloride (Aliqopa) for the treatment of follicular lymphoma, wherein the administration of Compound II Form B provides a (mean steady 20 state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of copanlisib hydrochloride (.Aliqopa) for the treatment of follicular lymphoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In 25 one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of idelalisib (Zydelig) for the treatment of chronic lymphocytic leukemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an 30   effective amount of Compound II Form B is administered in combination with an effective amount of idelalisib (Zydelig) for the treatment of chronic lymphocytic leukemia, wherein the 2024205055 . 24 Jul 2024 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of idelalisib (Zydelig) for the treatment of Non-Hodgkin lymphoma, including follicular B-cell non-Hodgkin lymphoma or small lymphocytic lymphoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of idelalisib (Zydelig) for the treatment of Non-Hodgkin lymphoma, including follicular B-cell non-Hodgkin lymphoma or small lymphocytic lymphoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUG0-24 Ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 15          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ibrutinib (Imbruvica) for the treatment of chronic lymphocytic leukemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount 20 of ibrutinib (Imbruvica) for the treatment of chronic lymphocytic leukemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 25 combination with an effective amount of ibrutinib (Imbruvica) for the treatment of lymphoma, including small lymphocytic lymphoma, mantle cell lymphoma, marginal zone lymphoma, or Waldenstrom macroglobulinemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective 30 amount of ibrutinib (Imbruvica) for the treatment of lymphoma, including small lymphocytic lymphoma, mantle cell lymphoma, marginal zone lymphoma, or Waldenstrom 2024205055 . 24 Jul 2024 macroglobulinemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mmJ) ratio of not greater than 1.25, In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of binimetinib for the treatment of melanoma, including BRAF-mutant melanoma and NRAS-mutant melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of binimetinib for the treatment of melanoma, including BRAF-mutant melanoma and NRAS-mutant melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 15          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of cobimetinib (Cotellic) for the treatment of melanoma, including BRAF-mutant melanoma and NRAS-mutant melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered 20 in combination with an effective amount of cobimetinib (Cotellic) for the treatment of melanoma, including BRAF-mutant melanoma and NRAS-mutant melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 25         In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of binimetinib for the treatment of ovarian cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of binimetinib for 30 the treatment of ovarian cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUCto-24 ss)(h*ng / mL)) / Absolute Neutrophil Count 2024205055 . 24 Jul 2024 (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of selumetinib for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of selumetinib for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of selumetinib for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) 15 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of selumetinib for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) 20 is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 25 Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of melanoma, 2024205055 . 24 Jul 2024 wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trametinib (Mekinist) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC<o-24 15 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafmlar) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) 20 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafmlar) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 25 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafmlar) for the treatment of melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 30 Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafmlar) for the treatment of melanoma, wherein the administration of Compound II Form B 2024205055 . 24 Jul 2024 provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafinlar) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dabrafenib (Tafinlar) for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of encorafenib for the treatment of melanoma, including 15 BRAF-mutant melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of encorafenib for the treatment of melanoma, including BRAF-mutant melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state 20   AUC(0-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ipatasertib for the treatment of breast cancer, including triple negative breast cancer, wherein the administration of Compound II Form B provides a (mean 25 steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ipatasertib for the treatment of breast cancer, including triple negative breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(0-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. 30 In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of niraparib tosylate monohydrate (Zejula) for the treatment of abnormal tissue of the female reproductive system, including ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of niraparib tosylate monohydrate (Zejula) for the treatment of abnormal tissue of the female reproductive system, including ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of niraparib tosylate monohydrate (Zejula) for the treatment of peritoneal cancer, wherein the administration of Compound II Form B provides a (mean steady 15 state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of niraparib tosylate monohydrate (Zejula) for the treatment of peritoneal cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In 20 one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides a 25   (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean 30 steady state AUG0-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater 2024205055 . 24 Jul 2024 than 1,25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of BRAC1 or BRAC2-mutated breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of oiaparib (Lynparza) for the treatment of BRAC1 or BRAC2-mutated breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of HER2- breast 15 cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of HER2- breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUCfo-24 Ss)(h*ng / mL)) / Ab solute 20 Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of peritoneal cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-25   24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaparib (Lynparza) for the treatment of peritoneal cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUCfo-24 Ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 30 state AUC(o-24ss) is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of rucaparib camsylate (Rubraca) for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effecti ve amount of rucaparib camsylate (Rubraca) for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or fallopian tube cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24SS) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of rucaparib camsylate (Rubraca) for the treatment of 15 peritoneal cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of rucaparib camsylate (Rubraca) for the treatment of peritoneal cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 20 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of talazoparib for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or 25   fallopian tube cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of talazoparib for the treatment of abnormal tissue of the female reproductive system, including breast cancer, ovarian cancer, ovarian epithelial cancer or fallopian tube cancer, wherein the 30 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state 2024205055 . 24 Jul 2024 AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of talazoparib for the treatment of BRAC1 or BRAC2-mutated breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of talazoparib for the treatment of BRAC1 or BRAC2-mutated breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaratumab for the treatment of soft tissue sarcoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> 15 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of olaratumab for the treatment of soft tissue sarcoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) 20 is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 25 Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for seaim Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of non-small cell lung cancer, 2024205055 . 24 Jul 2024 wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of savolitinib for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count 15 (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vistusertib for the treatment of advanced breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) 20 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vistusertib for the treatment of advanced breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 25 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vistusertib for the treatment of advanced breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 30 Compound II Form B is administered in combination with an effective amount of vistusertib for the treatment of advanced breast cancer, wherein the administration of Compound II Form B 2024205055 . 24 Jul 2024 provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abemaciclib (Versenio) for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abemaciclib (Versenio) for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 Ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abemaciclib (Versenio) for the treatment of HR+ HER2-15 breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of abemaciclib (Versenio) for the treatment of HR+ HER2- breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 20 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effecti ve amount of palbociclib (Ibrance) for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) 25 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 Ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 30 state AUC(o-24ss) is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of HR+ HER2-breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of HR+ HER2- breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o~24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib 15 (Ibrance) for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 20   combination with an effective amount of palbociclib (Ibrance) for the treatment of metastatic triple negative breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of metastatic triple negative breast cancer, wherein the 25 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of small cell lung 30 cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 2024205055 . 24 Jul 2024 Compound II Form B is administered in combination with an effective amount of palbociclib (Ibrance) for the treatment of small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of cabozantinib S-malate (Cometriq™) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of cabozantinib S-malate (CometriqIM) for the treatment of thyroid cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 15          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of cabozantinib S-maleate (Cometriq™) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount 20 of cabozantinib S-maleate (Cometriq™) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 25 combination with an effective amount of dasatinib (Sprycel) for the treatment of leukemia, including acute lymphoblastic leukemia or chronic myelogenous leukemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dasatinib (Sprycel) for the treatment 30 of leukemia, including acute lymphoblastic leukemia or chronic myelogenous leukemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady 2024205055 . 24 Jul 2024 state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25, In one embodiment, the mean steady state AUQtxuss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dasatinib (Spry eci) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of dasatinib (Spry cel) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUQo-lu ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of Erlotinib (Tarceva®) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> 15 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of Erlotinib (Tarceva®) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 20 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of Gefitinib (Iressa®) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 25 Compound II Form B is administered in combination with an effective amount of Gefitinib (Iressa®) for the treatment of prostate cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUQtxu ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of imatinib mesylate (Gleevec) for the treatment of 2024205055 . 24 Jul 2024 leukemia, including acute lymphoblastic leukemia, chronic eosinophilic leukemia, hypereosinophilic syndrome, or chronic myelogenous leukemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of imatinib mesylate (Gleevec) for the treatment of leukemia, including acute lymphoblastic leukemia, chronic eosinophilic leukemia, hypereosinophilic syndrome, or chronic myelogenous leukemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trastuzumab (Herceptin) for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective 15 amount of Compound II Form B is administered in combination with an effective amount of trastuzumab (Herceptin) for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 20         In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of trastuzumab (Herceptin) for the treatment of breast cancer, including HER2+ breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an 25 effective amount of trastuzumab (Herceptin) for the treatment of breast cancer, including HER2+ breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of imatinib mesylate (Gleevec) for the treatment of tumors, 2024205055 . 24 Jul 2024 including but not limited to dermatofibrosarcoma protuberans and gastrointestinal stromal tumors, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24SS) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of imatinib mesylate (Gleevec) for the treatment of tumors, including but not limited to dermatofibrosarcoma protuberans and gastrointestinal stromal tumors, wherein the administration of Compound II Form B provi des on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm5) ratio of not greater than 1,25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of imatinib mesylate (Gleevec) for the treatment of myelodysplastic / myeloproliferative neoplasms, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an 15 effective amount of imatinib mesylate (Gleevec) for the treatment of myelodysplastic / myeloproliferative neoplasms, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mmJ) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 20         In one embodiment, an effective amount of Compound II Form B is administered in combinati on with an effecti ve amount of imatinib mesylate (Gleevec) for the treatment of systemi c mastocytosis, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of 25 imatinib mesylate (Gleevec) for the treatment of systemic mastocytosis, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mmJ) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 30 combination with an effective amount of nilotinib (Tasigna) for the treatment of chronic myelogenous leukemia, including Philadelphia chromosome positive chronic myeloid leukemia 2024205055 . 24 Jul 2024 (Ph+ CML), wherein the administration of Compound II Form B provides a (mean steady state ALtC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of nilotinib (Tasigna) for the treatment of chronic myelogenous leukemia, including Philadelphia chromosome positive chronic myeloid leukemia (Ph+ CML), wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ssj is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of pazopanib hydrochloride (Votrient) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of pazopanib hydrochloride (Votrient) for the treatment of renal cell carcinoma, wherein the 15 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state ALtC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of pazopanib hydrochloride (Votrient) for the treatment of 20 soft tissue sarcoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of pazopanib hydrochloride (Votrient) for the treatment of soft tissue sarcoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state 25   AUC(0-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of regorafenib (Stivarga) for the treatment of colorectal cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-3 0   24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of regorafenib 2024205055 . 24 Jul 2024 (Stivarga) for the treatment of colorectal cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mmJ) ratio of not greater than 1,25. In one embodiment, the mean steady state AUC(o-?.4ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of regorafenib (Stivarga) for the treatment of gastrointestinal stromal tumor, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of regorafenib (Stivarga) for the treatment of gastrointestinal stromal tumor, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24SS) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 15 combination with an effective amount of regorafenib (Stivarga) for the treatment of hepatocellular carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of regorafenib (Stivarga) for the treatment of hepatocellular carcinoma, wherein the administration 20 of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state .AUQo-crss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sorafenib Tosylate (Nexavar) for the treatment of 25 carcinoma, including hepatocellular carcinoma or renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sorafenib Tosylate (Nexavar) for the treatment of carcinoma, including hepatocellular carcinoma or renal cell carcinoma, wherein the 30 administration of Compound II Form B provides on Day 22 after first dosing a mean steady state 2024205055 . 24 Jul 2024 AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of gastrointestinal stromal tumor, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of gastrointestinal stromal tumor, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides a (mean steady state A.UC(0-15   24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 20 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective 25 amount of Compound II Form B is administered in combination with an effective amount of sunitinib malate (Sutent) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vemurafenib (Zelboraf) for the treatment of Erdheim- 2024205055 . 24 Jul 2024 Chester disease, wherein the administration provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vemurafenib (Zelboraf) for the treatment of Erdheim-Chester disease, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC<o-24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vemurafenib (Zelboraf) for the treatment of melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of vemurafenib (Zelboraf) for the treatment of melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute 15 Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of bosutinib (Bosulif®) for the treatment of chronic myelogenous leukemia (CML), wherein the administration of Compound II Form B provides a 20 (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of bosutinib (Bosulif®) for the treatment of chronic myelogenous leukemia (CML), wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater 25 than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ponatinib hydrochloride (Iclusig) for the treatment of leukemia, including acute lymphoblastic leukemia and chronic myelogenous leukemia, wherein 30 the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of 2024205055 . 24 Jul 2024 Compound II Form B is administered in combination with an effective amount of ponatinib hydrochloride (Iclusig) for the treatment of leukemia, including acute lymphoblastic leukemia and chronic myelogenous leukemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss> is measured for seaim Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm') ratio of not greater than 1.25. In one embodiment, the mean steady 15 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of HR+, HER2-breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective 20 amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of HR+, HER2- breast cancer, wherein the admini stration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUQo-24ss) is measured for serum Compound I. 25         In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides a (mean steady state AUQo-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus 30 (Afinitor) for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute 2024205055 . 24 Jul 2024 Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of gastrointestinal cancer, wherein the administration of Compound II Form B provides a (mean steady state A.UC(0-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of gastrointestinal cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state ALtC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss> 15 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady 20 state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective 25 amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of renal cell carcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. 30          In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of astrocytoma, 2024205055 . 24 Jul 2024 including subependymal giant cell astrocytoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of everolimus (Afinitor) for the treatment of astrocytoma, including subependymal giant cell astrocytoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of fulvestrant (Faslodex) for the treatment of breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24SS) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of fulvestrant (Faslodex) for the treatment of breast cancer, wherein the administration of Compound II Form B 15 provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of fulvestrant (Faslodex) for the treatment of HR+, HER2-20 breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of fulvestrant (Faslodex) for the treatment of HR+, HER2- breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 25 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state A.UC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ramucirumab for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) 30 (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ramucirumab 2024205055 . 24 Jul 2024 for the treatment of adenocarcinoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss>(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1,25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ramucirumab for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ramucirumab for the treatment of non-small cell lung cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Ab solute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-?.4ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 15 combination with an effective amount of ramucirumab for the treatment of colorectal cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24SS) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ramucirumab for the treatment of colorectal cancer, wherein the administration of Compound II Form B provides 20 on Day 22 after first dosing a mean steady state AUC(o-24 ss>(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ribociclib (Kisqali) for the treatment of breast cancer, 25 wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24SS) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ribociclib (Kisqali) for the treatment of breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute 30 Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-?.4ss) is measured for serum Compound I. 2024205055 . 24 Jul 2024 In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ribociclib (Kisqali) for the treatment of HR+ and HER2-breast cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ribociclib (Kisqali) for the treatment of HR+ and HER2- breast cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o~24 SS)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of enasidenib mesylate (Idhifa) for the treatment of acute myeloid leukemia, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of 15 enasidenib mesylate (Idhifa) for the treatment of acute myeloid leukemia, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm5) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 20 combination with an effective amount of SCH772984 for the treatment of melanoma, including BRAF-mutant melanoma or NRAS-mutant melanoma, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of SCH772984 for the treatment of melanoma, including 25 BRAF-mutant melanoma or NRAS-mutant melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in 30 combination with an effective amount of ulixertinib for the treatment of melanoma, including uveal melanoma, wherein the administration of Compound II Form B provides a (mean steady 2024205055 . 24 Jul 2024 state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5, In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ulixertinib for the treatment of melanoma, including uveal melanoma, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured for serum Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ulixertinib for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of ulixertinib for the treatment of pancreatic cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) 15 is measured for seaim Compound I. In one embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of erdafitinib for the treatment of urothelial cancer, including metastatic urothelial cancer, wherein the administration of Compound II Form B provides a (mean steady state AUC(o-24ss) (h*ng / mL)) / mg dose ratio of not greater than 5. In one 20 embodiment, an effective amount of Compound II Form B is administered in combination with an effective amount of erdafitinib for the treatment of urothelial cancer, including metastatic urothelial cancer, wherein the administration of Compound II Form B provides on Day 22 after first dosing a mean steady state AUC(o-24 ss)(h*ng / mL)) / Absolute Neutrophil Count (cells / mm3) ratio of not greater than 1.25. In one embodiment, the mean steady state AUC(o-24ss) is measured 25 for serum Compound I. EXAMPLES Example L Collection of Compound I and Compound HI Plasma Concentration Versus 30 Time Data for Once a Day (QD) and Twice a Day (BID) Dosing Cohorts of Form B of Compound II 2024205055 . 24 Jul 2024 Patients were enrolled into I of 2 parallel, independently operating, dose-escalation dosing cohorts with Form B of Compound II administered continuously either once daily (QD) or twice daily (BID) with food with fixed-dose fulvestrant (intramuscularly every' 14 days for the first three injections and then every' 28 days). Pre- or perimenopausal patients also received goserelin for the duration of study treatment. A LHR2 agonist was started at least 28 days before the first dose of Form B, and those patients who were taking another LHRH agonist ’were switched to goserelin on Day 1. Patients were split into six cohorts providing once a day (QD) dosing of 200 mg, 300 mg, 400 mg, 500 mg, or 650 mg of Form B, or twice a day (BID) dosing of 100 mg, 150 mg, or 200 mg of Form B. The second dose in BID cohorts was not administered in the evening until at least 12 hours after the initial morning dose of Form B. The dosing cohorts for Form B of Compound II are provided in Table 1. Table 1. Compound II Dosing Cohorts of Form B of Compound II Cohort Number of Subjects (N) Dosage 1             6          200 mg QD 2 3 300 mg QD 3 3 400 mg QD 4 3 500 mg QD 5 3 650 mg QD 6              6           100 mg BID 7              3           150 mg BID 8             3           200 mg BID 15          Blood samples were collected at the following time points relative to the morning dose of Form B at Day I and at Day 29: pre-dose (0 hour) and 1, 2, 3, 4, 6, 8, 10, 12 (prior to the evening dose in the BID cohorts), and 24 (prior to the next day’s morning dose) hours after dosing. A ± 5-minute time window' was allowed for samples collected between the predose and 3 hours after Form B dosing. A ± 15-minute window' w'as allowed for samples collected between 4 to 12 hours 20 after Form B dosing. A ± 1-hour window was allowed for the sample collected 24 hours after Form B dosing. Blood samples for Compound IPK trough levels were collected pre-dose at Day 2024205055   24 Jul 2024 8, Day 15, and Day 22 prior to the morning administration of Compound I. Plasma concentrations of Compound I and its metabolite, Compound III, were measured using validated methods. Compound III 5          Analysis of plasma concentration versus time data for calculation of standard pharmacokinetic (PK) parameters following oral administration was conducted using Phoenix WinNonlin version 6.3 using actual blood sampling times. The Day 1 Concentration-Time Data of Compound I for all cohorts is provided in Tables 10    2 to 9. Table 2. Compound I Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B) on Day 1. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 200 mg QD N = 6 Concentration (ng / mL) Mean 0.00 8.42 13.6 20.2 25.0 16.8 11.6 8.28 6.29 3.61 SD 0.00 9.94 12.0 12.4 11.7 6.98 4.23 2.68 2.15 1.89 Min 0.00 0.828 0.896 4.34 5.47 8.26 5.96 4.59 3.47 1.71 Median 0.00 3.65 12.3 18.1 27.0 17.7 12.2 9.13 6.43 3.24 Max 0.00 26.0 36.0 40.0 39.7 24.8 17.2 11.0 8.88 6.67 CV% 118.1 87.9 61.4 46.7 41.5 36.6 32.4 34.2 52.2 15 2024205055   24 Jul 2024 Table 3. Compound I Concentration (ng / mL) Summary for Cohort 2 (300 mg QD of Form B) on Day 1. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 300 mg QD N = 3 Concentration (ng / mL) Mean 0.00 22.9 16.9 27.1 32.0 31.6 22.7 19.9 15.5 8.09 SD 0.00 35.7 19.0 29.3 29.8 21.0 15.3 16.0 12.1 6.21 Min 0.00 0.834 5.84 7.16 10.2 7.41 5.51 4.83 4.48 1.69 Median 0.00 3.73 5.96 13.4 19.8 43.1 28.1 18.1 13.5 8.48 Max 0.00 64.1 38.8 60.8 66.0 44.3 34.6 36.7 28.4 14.1 / GJ M 2 / -. 108.2 9.-.2 66.3 "672"' 86 / '"76.8 5 Table 4. Compound I Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B) on Day 1. Compound I                                      Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 400 mg QD N = 3 Concentration (ng / mL) Mean 0.00 5.32 5.67 9.21 14.0 20.1 15.5 10.6 7.69 3.27 SD 0.00 6.43 3.72 5.78 3.29 5.16 3.87 1.85 1.95 0.851 Min "00"' 0.990 2.45 3.. / H.2 14.4 114 94s 555 2.40 Median 0.00 2.26 4.83 9.38 13.1 21.6 16.0 9.56 8.13 3.31 Max""" 0.60 12.- 9.“4 14.9 ”24 / "" 194 " 12.“ 9.38 4.10 CV% 120.9 65.5 62.7 23.5 25.6 25.0 17.5 25.4 26.0 2024205055   24 Jul 2024 Table 5. Compound I Concentration (ng / mL) Summary for Cohort 4 (500 mg QD of Form B) on Day 1. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 500 mg QD N = 4 Concentration (ng / mL) Mean 0.00 10.4 18.5 34.3 35.4 46.5 40.6 32.2 27.8 8.93 SD 0.00 6.22 6.43 15.7 6.94 17.6 9.53 6.59 7.63 4.07 Min 0.00 3.84 11.6 24.8 27.7 26.3 27.7 23.3 18.9 6.38 Median 0.00 10.2 18.1 27.4 35.3 45.6 42.3 33.4 28.3 7.17 — Max CV% 0.00 17.2 =77 26.3 CuV 57.7 45.6 43.4 ""[ / Tg" 68.7 '"37 / 7""' 50.2 275 38.7 20.=- 35.7 '"27?5"' 15.0 45.6 5 Table 6. Compound I Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B) on Day 1. Compound I                                     Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.(1 10.0 12.0 24.0 Day 1 650 mg QD N = 6 Concentration (ng / mL) Mean 0.00 12.7 24.8 30.9 43.7 52.7 59.6 48.4 37.4 17.1 SD 0.00 10.7 19.1 12.4 15.6 14.3 17.3 21.8 13.5 7.37 Min 0.00 2.83 799 14.1 2i7 35.2 38.2 20.6 2.'.9 8.7, Median 0.00 9.68 19.1 31.6 43.5 49.8 60.3 47.9 37.3 16.0 Max "33T 57.6 711 66.3 70.3 X0.7 78.5 53.6 28.4 CV% 84.0 76.8 39.9 35.6 27.2 29.0 45.0 36.1 43.0 2024205055   24 Jul 2024 Table 7. Compound I Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B) on Day 1. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 100 mg BID N = 6 Concentration (ng / mL) Mean 0.00 2.80 6.21 8.72 8.98 5.70 4.07 3.29 2.93 SD 0.00 2.09 1.68 3.07 4.14 2.97 1.90 1.43 1.63 Min 0.00 0.00 4.90 5.87 4.31 2,97 2.27 1.92 1.49 Median 0.00 2.60 5.71 8.09 7.47 5.12 3.71 2.91 2.20 Max 0.00 6.42 9.57 14.7 14.5 11.0 6.93 5.26 5.26 CV% 74.4 27.1 35.2 46.1 52.2 46.7 43.6 55.5 5 Table 8. Compound I Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B) on Day L Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 150 mg BID N = 3 Concentration (ng / mL) Mean 0.00 4.63 11.0 14.4 20.7 12 2 10.1 8.98 7.73 SD 0.00 4.43 7.02 8.85 8.08 4.48 2.64 2.33 2.22 Min 0.00 0.00 3.69 8.48 12.2 8.89 7.53 6.65 5.71 Median 0.00 5.06 11.6 10.2 21.5 10.4 9.95 8.98 7.38 Max 0.00 8.82 17.7 24.6 28.3 17.3 12.8 11.3 10.1 CV% 95.7 63.9 61.4 39.1 36.8 26.1 25.9 28.7 2024205055   24 Jul 2024 Table 9. Compound I Concentration (ng / mL) Summary for Cohort 8 (200 mg BID of Form B) on Day 1. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 200 mg BID N = 4 Concentration (ng / mL) Mean 0.00 5.79 9.42 12.8 15.5 15.5 8.94 6.61 5.64 SD 0.00 4.81 5.41 6.83 10.7 8.34 3.71 3.43 2.40 Min 0.00 0.00 1.37 3.14 3.07 5,28 4.49 2.77 3.83 Median 0.00 6.13 11.8 14.8 14.9 17.1 9.13 6.33 4.89 Max 0.00 10.9 12.7 18.4 29.0 22.6 13.0 11.0 8.94 83.1 v.5 5\5 69.2 53.8 "41'5"' 51.9 42.6 5 The Day 1 Concentration-Time Data for Metabolite Compound III for all cohorts is provided in Tables 10 to 17. Table 10. Compound HI Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B) on Day 1. Compound! Ill Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 200 mg QD N = 6 Concentration (ng / mL) Mean 0.00 1.51 2.79 3.50 4.11 2.30 1.33 0.693 0.390 0.123 SD 0.00 2.03 2.10 2.02 2.48 1.79 0.846 0.576 0.448 0.300 Min 0.00 0.00 0.00 0.800 1.02 0.00 0.00 0.00 0.00 0.00 Median 0.00 0.665 2.74 3.51 3.79 2.03 1.31 0.830 0.273 0.00 Max 0.00 5.02 6.43 6.83 7.82 5.23 2.47 1.32 0.962 0.736 CV% 134.4 75.3 57 7 60.4 77.8 63.8 83.1 114.9 244.9 10 2024205055   24 Jul 2024 Table 11. Compound HI Concentration (ng / mL) Summary for Cohort 2 (300 mg QI) of Form B) on Day 1. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 300 mg QD N = 3 Concentration (ng / mL) Mean 0,00 2,41 2.52 3.40 4.00 4,04 2,80 2.27 1.30 0.455 SD 0.00 3.33 2.37 2.35 2.15 2.64 2.36 2.21 1.47 0.432 Min 0.00 0.00 0.974 1,78 1.82 1.19 0.643 0.517 0,00 0.00 Median 0.00 1.01 1.33 2.33 4.08 4.53 2.44 1.54 1.01 0.506 Max 0,00 6,21 5.25 6.09 6.11 6,40 5,33 4.75 2.89 0.859 CV% 138.5 94.2 69.0 53.6 65.3 84.3 97.3 112.8 94.9 5   Table 12. Compound III Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B) on Day 1. Compound HI Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 400 mg QD N = 3 Concentration (ng / mL) Mean 0.00 2.61 1.33 2.46 3.02 3.83 2.33 1.13 0.668 0.00 SD 0.00 3.72 0.548 1,20 0.922 0.820 0.522 0,345 0.138 0.00 Min 0.00 0.00 0.719 1.15 1.96 3.02 1.79 0.728 0.546 0.00 Median 0.00 0,960 1.49 2.70 3.51 3,81 2.38 1.31 0.640 0,00 Max 0.00 6.87 1.78 3.52 3.60 4.66 2.83 1.34 0.818 0.00 CV% 142.5 41.2 49.0 30.5 21,4 22.4 30.6 20,7 2024205055   24 Jul 2024 Table 13. Compound HI Concentration (ng / mL) Summary for Cohort 4 (500 mg QI) of Form B) on Day 1. Compound III                                     Time (h) "(U)........L0........2.6..........3.6..........4.6........6.6........8.6........16.6........12J........24«"" Day 1 500 mg QD N = 4                        Concentration (ng / mL) Mean 0.00 2.76 4.47 6.14 6.86 7.69 5.62 3.71 2.49 0.806 SD 0.00 1.10 1.57 0.751 1.34 1.50 1.59 0.836 0.702 0.211 Min 0.00 1.31 3.12 5.22 5.12 6.00 4.11 2.59 1.62 0.611 Median 0.00 2.97 4.26 6.15 6.99 7.86 5.31 3.83 2.57 0.787 Max 0.00 3.81 6.24 7.03 8.36 9.03 7.77 4.58 3.21 1.04 CV% 39.8 35.1 12.2 19.5 19.6 28.2 22.6 28.2 26.1 5 Table 14. Compound III Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B) on Day 1. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 1 650 mg QD N = 6 Concentration (ng / mL) Mean 0.00 2.73 4.01 6.13 8.35 9.69 10.1 6.63 5.12 2.17 SD 0.00 1.70 1.93 2.28 2.44 2.49 3.98 3.05 2.42 1.87 Min 0.00 0.516 1.75 2.76 3.46 5.29 5.56 4.06 2.91 0.609 Median 0.00 2.77 3.81 6.43 9.22 10.0 8.66 5.32 4.41 1.51 Max 0.00 5.50 6.90 9.24 9.92 12.8 16.5 11.4 8.45 5.60 CV% 62.4 48.2 37.2 29.3 25.7 39.4 46.0 47.2 86.1 2024205055   24 Jul 2024 Table 15, Compound HI Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B) on Day 1. Compound III Time (h) 0.0 1.0 2,0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 100 mg BID N = 6 Concern ration (ng / mL) Mean 0.00 0.248 1.04 1.41 1.25 0.471 0.219 0.00 0.0917 SD 0.00 0.412 0.281 0.260 0.577 0.540 0.340 0.00 0.225 Min 0.00 0.00 0.723 111 0.616 0.00 0.00 0.00 0.00 Median 0.00 0.00 1.00 1.42 1.13 0.382 0.00 0.00 0.00 Max 0.00 0.977 1.49 1.70 2.12 1.23 0.692 0.00 0.550 CV% 165.9 26.9 18.4 46.2 114.7 155.3 244.9 5 Table 16, Compound III Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B) on Day 1. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 150 nig BID N = 3 Concentration (ng / mL) Mean 0.00 1.03 2.33 2.60 2.47 1.59 1.02 0.730 0.503 SD 0.00 0.892 0.687 1.02 0.669 । 0.313 0.137 0.169 0.453 Min 0.00 0.00 1.58 1.63 1.72 1.24 0.870 0.543 0.00 Median 0.00 1.52 2.48 2.50 2.70 1.67 1.05 0.776 0.628 Max 0.00 1.57 2.93 3.67 3.00 1.85 1.14 0.872 0.880 CV% 86.6 29.5 39.4 27.1 19.8 13.5 23.2 90.2 2024205055   24 Jul 2024 Table 17, Compound HI Concentration (ng / mL) Summary for Cohort 8 (200 mg BID of Form B) on Day 1. Compound III Time (h) 0,0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 1 200 mg BID  N = 4 Concern ration (ng / mL) Mean 0.00 1.15 1.66 2.27 2.43 2.39 1.27 0.663 0.357 SD 0.00 0.969 1.12 0.972 1.11 1.25 0.503 0.521 0.415 Min 0.00 0.00 0.00 0.908 1.03 1.40 0.822 0.00 0.00 Median 0.00 1.30 2.11 2.49 2.57 2.04 1.16 0.702 0.328 Max 0.00 2.00 2.42 3.21 3.56 4.07 1.94 1.25 0.771 cv%"" 84.3 '"67 / 7"' 42.8 45.8 52.5 ""396"" HO.2 5 The Day 29 Concentration-Time Data of Compound I for all Cohorts is provided in Tables 18 to 25. Table 18. Compound I Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B) on Day 29. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 29 200 mg QD N = 5 Concentration (ng / mL) N 5 5 5 5 5 5 5 5 5 3 Mean 4.05 5.12 6.92 12.5 17.5 18.5 14.6 11.1 8.46 6.01 SD 1.93 2.13 2.17 4.48 7.18 10.3 11.2 7.97 5.45 4.14 Min 2.06 2.04 3.30 5.90 5.46 4.35 3.50 3.14 2.29 2.54 Median 4.10 5.35 7.27 11.8 18.8 17.9 12.1 8.70 8.32 4.90 Max 6.06 7.83 9.12 16.7 24.2 32.0 31.8 23.1 17.0 10.6 CV% 47.7 41.6 31.4 35.7 41.1 55.6 76.8 71.9 64.4 68.9 2024205055   24 Jul 2024 Table 19. Compound I Concentration (ng / mL) Summary for Cohort 2 (300 mg QD of Form B) on Day 29. Compound I                                      Time (h) .....d.o.........si........id........Id........4.0........6.0........Id.......idl.....iid.....20" Day 29 300 mg QD N = 3                       Concentration (ng / mL) Mean 13.9 16.2 22.6 31.0 44.9 35.9 31.5 25.6 26.4 14.4 SD 10.8 8.32 15.9 21.3 24.6 10.2 9.73 12.9 11.7 8.29 Min 7.16 8.32 8.50 12.5 27.5 24.5 21.0 17.5 18.8 8.50 Median 8.24 15.4 19.5 26.3 34.2 39.2 33.3 18.9 20.5 10.9 Max 26.3 24.9 39.9 54.3 73.0 44.0 40.2 40.5 39.8 23.9 cv%"' "tIT" 51.3 '^.4 68.6 54." 28.3 '0.9 593 44.2 5".4 5 Table 20. Compound I Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B) on Day 29. Compound I                                      Time (h) .....Id.........iii........io........Id........Id........6.0........Io.......idl......iid.....20" Day 29 400 mg QD N = 3 Concentration (ng / mL) Mean 6.80 8.07 11.1 14.2 17.0 18.9 17.0 14.2 11.8 6.26 SD 4.11 4.05 5.87 6.51 9.37 10.5 9.48 6.54 6.30 2.97 Min 2.37 3.43 4.38 6.69 6.24 6.94 6.25 6.66 4.84 2.98 Median 7.52. 9.88 13.4 17.2 21.2 23.2 20.5 17.1 13.5 7.04 Max 10.5 10.9 15.4 18.6 23.5 26.7 24.2 18.7 17.1 8.77 CV% 60.5 50.2 53.1 46.0 55.2 55.7 55.8 46.2 53.3 47.5 2024205055   24 Jul 2024 Table 21. Compound I Concentration (ng / mL) Summary for Cohort 4 (SOO mg QD of Form B) on Day 29. Compound I Time (h) 0.0 1.0 2.0 3.0 4.0    6.0 8.0 10.0 12.0 24.0 Day 29 500 mg QD N = 3 Concentration (ng / mL) Mean 14.4 21.2 34.2 40.3 41.8 41.5 34.1 26.7 24.4 12.5 SD 2.14 7.15 9.16 6.86 8.45 4.54 4.43 2.17 2.08 1.90 Min 12.0 16.5 25.3 33.0 32.2 36.4 30.0 25.3 22.0 10.4 Median 15.3 17.6 33.8 41.4 44.9 43.2 33.5 25.6 25.2 13.0 — Max CV% 16.0 ‘4.8 29.4 yys 43.6 46,6 ‘“.0 48.2 45.0 20.2 38.8 ru; 29.2 S.l 25.9 8.5 14.1 15.2 5 Table 22. Compound I Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B) on Day 29. Compound I                                      Time (h) BJ!........L0........2.6........3.6........L0........6.0........8.0.......10.6......12.0......20 " Day 29 650 mg QD N = 3                       Concentration (ng / mL) N = 3 2 2 2 2 2 2, 2 2 2 Mean 20.9 20.9 25.9 28.4 33.1 58.8 66.0 58.1 46.3 24.3 SD 8.85 12.4 12.8 15.8 15.2 29.1 32.2 2.8.5 23.9 5.02. Min 11.4 12.1 16.8 17.2 22.3 38.2 43.2 37.9 29.4 20.7 Median 22.5 20.9 25.9 28.4 33.1 58.8 66.0 58.1 46.3 24.3 Max 28.9 29.6 34.9 39.5 43.8 79.3 88.7 78.2 63.2 27.8 CV% 42.3 59.3 49.5 55.6 46.0 49.5 48.8 49.1 51.6 20.7 2024205055   24 Jul 2024 Table 23. Compound I Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B) on Day 29. Compound 1 Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 29 100 mg BID N = 5 Concentration (ng / mL) Mean 4.35 9.25 11.0 10.5 10.5 8.82 7.45 6.23 7.16 SD 3.13 6.42 6.48 6.12 5.55 4.47 3.80 3.17 3.43 Min 1.54 1.79 2.94 4.40 5.14 4.10 3.61 2.88 2.37 Median 4.13 9.34 11.8 8.31 9.26 8.11 6.57 5.44 8.36 Max 9.20 15.7 19.6 20.5 19.8 16.2 13.8 11.4 10.1 cv%"" "72.0 (,9.4 "5O" 'S3 5L0 50 / 7" ^1.0 50.9 4".9 5 Table 24. Compound I Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B) on Day 29. Compound I                                    Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 29 150 mg BID N = 3 Mean 26.2 ?".6 4 l ' Concentration (ng / mL) 460 50.2 38.0 36." "322" 28.5 — SD 22.1 Min 03"' 16.9 27.0 21.0 24.6 27.0 25." 28.8 30.5 25.5 20.3 27.2 15.8 24.4 yy 25.9 10.2 — Median 18.5 Maa 51.1 28.7 '".O 34.3 64.9 35.6 76.6 36.9 yyy 26,5 67 2~' 26.9 6".4 23.8 59.7 17.3 ^8.1 CV% 84.2 44.9 51.0 58.7 57.3 67.0 74.0 76,0 90.6 2024205055   24 Jul 2024 Table 25. Compound I Concentration (ng / mL) Summary for Cohort 8 (200 mg BID of Form B) on Day 29. Compound 1                                    Time (h) 0.0    1.0   2.0   3.0   4.0   6.0   8.0   10.0 12.0 Day 29 200 mg BID N = 3                     Concentration (ng / mL) Mean 9.74 9.23 12.0 15.2 21.1 19.0 14.6 18.6 19.8 SD 6.49 4.10 5.84 7.51 11.9 10.4 7.17 17.6 18.4 Min 5.47 5.10 5.56 7.49 7.69 7.60 7.36 5.61 6.32 Median 6.54 9.29 13.3 15.6 25.1 21.1 14.8 11.7 12.4 Max 17.2 13.3 17.0 22.5 30.5 28.1 21.7 38.6 40.8 The Day 29 Concentration-Time Data for Metabolite Compound III for all cohorts is provided in 5 Tables 26 to 33. Table 26. Compound III Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 29 200 mg QD N = 5 Concentration (ng / mL) N 5 5 5 5 5 5 5 5 5 3 Mean 0.343 0.968 1.43 2.39 2.82 2.35 1.73 1.12 0.803 0.670 SD 0.511 0.868 0.624 1.06 1.47 2.26 1.90 1.07 0.903 0.708 Min 0.00 0.00 0.685 0.856 0.864 0.00 0.00 0.00 0.00 0.00 Median ----- "oJw" 2.28 2.52 L99 1.11 0.89: 0.89(1 0.600 Max 1.14 2.34 2.30 3.80 4.84 6.11 4.96 2.85 2.20 1.41 ----- ''''897'" ----- i i.l 51.9 ----- no" 90.1 ------ :05.6 2024205055   24 Jul 2024 Table 27. Compound HI Concentration (ng / mL) Summary for Cohort 2 (300 mg QI) of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0     6.0 8.0 10.0 12.0 24.0 Day 29 300 mg QD N = 3 Concentration (ng / mL) Mean 1.66 2.01 3.28 4.08 5.23    4.39 4.00 3.06 2.47 1.45 SD 1.45 0.985 0.677 0.797 0.466 0.900 1.89 1.79 1.51 0.991 Min 0.677 L01 2.50 3.17 4.70   3.64 2.31 1.56 1.13 0.782 Median 0.976 2.03 3.63 4.44 5.44   4.15 3.65 2.58 2.18 0.983 Max 3.32 2.98 3.71 4.64 5.56   5.39 6.05 5.05 4.11 2.59 CV% 87.3 49.1 20.6 19.5 8.9    20.5 47.3 58.6 61.1 68.3 5   Table 28. Compound III Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B) on Day 29. Compound HI Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day-29 400 mg QD N = 3 Concentration (ng / mL) Mean 0.914 1.67 2.23 2.77 3.05 3.31 2.48 1.98 1.59 0.815 SD 0.202 0.465 0.903 0.612 0.707 1.08 0.748 0.424 0.597 0.105 Min 0.681 1.32 1.64 2.26 2.24 2.55 1.84 1.50 1.02 0.707 Median 1.02 1.50 1.78 2.61 3.40 2.84 2.29 2.12 1.54 0.821 Max 1.04 2.20 3.27 3.45 3.52 4.54 3.30 2.31 2.21 0.916 CV% 22.1 27.8 40.5 22.1 23.2 32.5 30.2 21.4 37.5 12.8 2024205055   24 Jul 2024 Table 29. Compound HI Concentration (ng / mL) Summary for Cohort 4 (500 mg QI) of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 24.0 Day 29 500 mg QD N = 3 Concentration (ng / mL) Mean 1.76 2.98 4.39 5.90 5.77 4.18 3.56 2.66 2.33 1.24 SD 0.522 0.820 0.847 1.66 1.97 0.686 0.251 0.191 0.225 0.316 Min 1.41 2.06 3.61 4.66 4.04 3.55 3.30 2.52 2.10 0.959 Median 1.51 3.23 4.26 5.25 5.37 4.07 3.58 2.59 2.34 1.17 Max 2.36 3.64 5.29 7.79 7.91 4.91 3.80 2.88 2.55 1.58 29." yy re 2 S3 34 1 10..4 yy yy yy 2\5 5 Table 30. Compound Hl Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0   6.0 8.0 10.0 12.0 24.0 Day 29 650 mg QD N = 3 Concentration (ng / mL) N = 3 2 2 2 2     2 2 2 2 2 Mean 2.22 2.49 3.14 3.89 4.78 7.57 8.64 8.02 6.06 3.04 SD 1.01 1.70 1.82 1.80 1.92 3.20 4.89 4.78 3 73 0.778 Min 1.30 1.28 1.85 2.61 3.42 5.30 5.18 4.64 3.42 2.49 Median 2.06 2.49 3.14 3.89 4.78 7.57 8.64 8.02 6.06 3.04 Max 3.30 3.69 4.42 5.16 6.14 9.83 12.1 11.4 8.69 3.59 CV% 45.5 68.6 58.0 46.4 40.2 42.3 56.6 59.6 61.5 25.6 2024205055   24 Jul 2024 Table 31. Compound HI Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 29 100 mg BID N = 5 Concentration (ng / mL) Mean 0.451 1.26 1.79 1.60 1.50 1.15 0.837 0.676 0.840 SD 0.473 1.27 1.08 0.737 0.658 0.533 0.585 0.491 0.845 Min 0.00 0.00 0.740 0.838 0.855 0.608 0.00 0.00 0.00 Median 0.542 1.37 1.56 1.30 1.14 1.07 0.824 0.643 1.03 Max 1.13 2.90 3.11 2.47 2.43 1.83 1.55 1.33 1.97 CV% 104.7 100.9 60.6 46.2 44.0 46.2 69.8 72.6 100.6 5 Table 32. Compound III Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B) on Day 29. Compound III Time (h) 0.0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 29 150 mg BID N = 3 Concentration (ng / mL) Mean 2.90 4.64 5.31 5.87 5.76 3.89 3.32 2.76 2.22 SD 4.01 3.49 3.67 4.96 5.58 3.82 3.58 3.15 2.62 Min 0.00 2.33 2.85 2.93 2.37 1.43 0.928 0.597 0.506 Median 1.23 2.93 3.55 3.09 2.72 1.94 1.59 1.30 0.914 Max 7.48 8.66 9.53 11.6 12.2 8.29 7.44 6.37 5.23 CV% 138.1 75.3 69.1 84.5 96.8 98.3 108.0 114.3 118.1 2024205055   24 Jul 2024 Table 33, Compound HI Concentration (ng / mL) Summary for Cohort 7 (200 mg BID of Form B) on Day 29. Compound III Time (h) 0,0 1.0 2.0 3.0 4.0 6.0 8.0 10.0 12.0 Day 29 200 mg BID N = 3 Concentration (ng / mL) Mean 0.940 1.19 1.61 1.85 2.25 2.19 1.58 2.01 2.03 SD 0.824 0.185 0.436 0.606 0.682 0.856 0.519 1.70 1.83 Min 0.00 1.00 1.35 1.49 1.48 1.28 1.10 0.986 0.746 Median 1.28 1.20 1.36 1.51 2.51 2.31 1.51 1.06 1.21 Max 1.54 1.37 2.11 2.55 2.77 2.98 2.13 3.97 4.12 CV% 87.7 15.6 27.1 32.8 30.3 39.1 32.8 84.9 90.3 5          The Day 8, 15, and 22 Trough Concentration Data of Compound I for all cohorts is provided in Tables 34 to 41. Table 34. Trough Compound I Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B). Day .......8............15.........22..... 200 mg QD   Analyte = N = 6 Concentration Compound I            (ng / mL) ............................................................................Mean........4.03......756.....6.24 ................................................................................SD...........2.31......-L37.....3.82 ..............................................................................Min..........2.80......1.86.....2.43 .........................................................................Median.....422......429.....532 " .............................................................................Max'.........879......115......1171'" ............................................................................CV%........463......78.6.....612'" 10                      ................................................................................................................................................... 2024205055   24 Jul 2024 Table 35. Trough Compound I Concentration (ng / mL) Summary for Cohort 2 (300 mg QD of Form B). Day 8    15   22 300 mg QD Analyte = N = 3 Concentration Compound I (ng / mL) Mean 7.01 9.50 12.2 Min Median 17.3 19.9 10.9 Max 18.7 24.1 30.4 CV% 50.2 57.0 74.4 Table 36. Trough Compound I Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B). Day 8 15 22 400 mg QD Analyte = N ::: 3 Concentration Compound I (ng / mL) Mean 5.63 6.66 9.34 SD 1.56 3.09 3.04 Min 3.87 4.46 5.91 Median 6.16 5.33 10.4 Max 6.85 10.2 11.7 CV% 27.7 46.4 32.5 2024205055   24 Jul 2024 Table 37. Trough Compound I Concentration (ng / mL) Summary for Cohort 4 (500 mg QD of Form B). Day .......8............15..........22..... 500 mg QD   Analyte =    N = 4   Concentration Compound I             (ng / mL) N 3 4 3 Mean 17.1 23.8 19.8 SD 6.45 8.76 6.70 Min 10.6 14.5 14.4 Median 17.2 23.9 17.7 Max 23.5 32.8 27.3 CV% 37.7 36.8 33.8 5 Table 38. Trough Compound I Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B). Day 8 15 22 650 mg QD Analyte =    N = 6 Compound I Concentration (ng / mL) N = 6 3 3 Mean 28.9 25.7 30.3 SD 10.6 5.98 11.6 Min 17.0 19.1 23.3 Median 28.3 27.4 24.0 Max 43.9 43 7 36.8 23.2 38 2 2024205055   24 Jul 2024 Table 39. Trough Compound I Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B). Day 8 15 22 100 mg BID Analyte = N = 6 CLoneenii*ai ion Compound I (ng / mL) Mean 8.78 8.92 5.70 SD 7.81 7.07 3.45 Min 3.29 3.31 2.34 Median 5.49 6.34 4.42 Max 23.7 22.0 10.9 CV% 88.9 79.3 60.5 5 Table 40. Trough Compound I Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B). Day 8 15 22 150 mg BID Analyte :::: N ::: 3 Concentration Compound I (ng / mL) Mean 26.8 24.8 20.6 SD 13.5 10.2 8.55 Mm 17.4 15.5 15.5 Median 20.6 23.3 15.9 Max 42.3 35.7 30.5 CV% 50.6 41.0 41.4 2024205055   24 Jul 2024 Table 41. Trough Compound I Concentration (ng / mL) Summary for Cohort 8 (200 mg BID of Form B). Day 8    15 22 200 mg BID Analyte == N = 3 Concentration Compound I (ng / mL ) """"3       2 Mean 9.41 11.0 7.11 SD 9.27 7.49 7.83 Min 1.72 5.71 0.00 Median 6.82 11.0 5.83 Max 19.7 16.3 15.5 CV% 98.4 68.0 110.0 5          The Day 8, 15, and 22 Trough Concentration Data of metabolite Compound III for all cohorts is provided in Tables 42 to 49. Table 42. Trough Compound III Concentration (ng / mL) Summary for Cohort 1 (200 mg QD of Form B). Day 8 15 22 200 mg QD Analyte =    N = 6 Concentration Compound III (ng / mL' Mean 0.453 0 554 0.628 0.588 0 575 0693 Min 0.00 0.00 0.00 Median 0.285 0.572 0.555 Max 1.48 1.57 1.37 CV% 129.9 103.8 110.4 2024205055   24 Jul 2024 Table 43. Trough Compound III Concentration (ng / mL) Summary for Cohort 2 (300 mg QD of Form B). Day 8 15 22 300 mg QD Analyte = N = 3 Concentration Compound III (ng / mL) Mean 1J9 1 SO L72 0 435 1.09 L34 Min 0.742 0.835 0.924 Median 1.22 1.57 0.975 Max 1.61 2.98 3.27 CV% 36.5 60.7 77.8 Table 44. Trough Compound III Concentration (ng / mL) Summary for Cohort 3 (400 mg QD of Form B). Day ........8...............is..............22....... 400 mg QD Analyte ::::     N = 3 Concentration Compound III (ng / mL) Mean 0.406 0.435 0.729 SD 0.364 0.377 0.210 Min 0.00 0.00 0.515 Median 0.515 0.640 0.736 Max 0.702 0.665 0.935 CV% 89.6 86.7 28.8 2024205055   24 Jul 2024 Table 45, Trough Compound III Concentration (ng / mL) Summary for Cohort 4 (500 mg QD of Form B). Day 8 15 22 500 mg QD Analyte = Compound III N = 4 Concentration (ng / mL) Mean 1.71 2.07 1.73 SD 0.238 0.636 0.332 Min 1.53 1.33 1.50 Median 1.62 2.15 1.58 Max 1.98 2.66 2.11 CV% 13.9 30.7 19.2 5 Table 46. Trough Compound III Concentration (ng / mL) Summary for Cohort 5 (650 mg QD of Form B). Day 8 15 22 650 mg QD Analyte =     N = 6 Compound III Concentration (ng / mL) N = 6 3 3 Mean 3.55 3.13 3.70 SD 1.48 0.740 1.73 Min 1.65 2.28 2.34 Median 3.79 3.52 3.11 Max 4 96 5.65 ^^7 418 46.8 2024205055   24 Jul 2024 Table 47. Trough Compound HI Concentration (ng / mL) Summary for Cohort 6 (100 mg BID of Form B). Day .........8...............15..............22....... 100 mg BID Analyte = N = 6 Concentration Compound III (ng / mL) Mean 1.17 0.898 0.734 SD 1.94 0.849 0.883 Min 0.00 0.00 0.00 Median 0.481 0.895 0.403 Max 4.99 1.98 1.83 CV% 165.7 94.5 120.2 5 Table 48. Trough Compound III Concentration (ng / mL) Summary for Cohort 7 (150 mg BID of Form B). Day .......8..............15.........22....... 150 mg BID Analyte =:     IN == 3 Concentration Compound III (ng / mL) Mean 2.62 2.34 2.17 SD 2.08 1.66 1.81 Min 1.35 0.962 1.02 Median 1.48 1.88 1.23 Max 5.02 4.18 4.26 CV% 79.6 70.8 83.6 2024205055   24 Jul 2024 Table 49. Trough Compound HI Concentration (ng / mL) Summary for Cohort 8 (200 mg BID of Form B). Day 8 15 22 200 mg BID Analyte =    N = 3 Concentration Compound III (ng / mL) 9 3 Mean 1.03 1.50 1.05 SD 1.36 0.952 1.02 Min 0.00 0.823 0.00 Median 0.518 1.50 1.12 Max 2.57 2.17 2.04 CV% 132.0 63,6 97.0 Example 2. Calculation of Pharmacokinetic Parameters for Compound I in Once a Day (QD) 5 and Twice a Day (BID) Dosing Cohorts of Form B of Compound II The following pharmacokinetic parameters were calculated from the concentration versus time data obtained in Example 1 for each of the above QD (200 mg, 300 mg, 400 mg, 500 mg, or 650 mg dosed) and BID (100 mg, 150 mg, or 200 mg doses) Form B of Compound II dosage cohorts: 10          Cmax --- the observed peak plasma concentration determined from the plasma concentration versus time data obtained on Day 1 and Day 29, as applicable; Tmax - the time to reach the observed peak plasma concentration from the plasma concentration versus time data obtained on Day 1 and Day 29, as applicable; AUC - area under the plasma concentration versus time curve during a dosing interval on 15                 Day 1 and Day 29, as applicable; and Race - accumulation ratio calculated as AUCoay 29 / A.UCDay 1. The Day 1 pharmacokinetic parameters for Compound I for all cohorts is provided in Tables 50 to 57, 2024205055   24 Jul 2024 Table 50. Noncompartmental Pharmacokinetic Parameters of Compound I for Cohort 1 (200 mg QD of Form B) on Day 1. Compound I Day 1 200 mg QD N = 6 Cmax (ng / mL) Tmax (h) AUClasl (h*ng / mL) Mean 25.5 4.17 215 SD 10.8 0.983 91.5 Min 8.26 3.00 98.9 Median 27.0 4.00 232 Max 40.0 6.00 355 CV% 42.5 23.6 42.5 5   Table 51. Noncompartmental Pharmacokinetic Parameters of Compound I for Cohort 2 (300 mg QD of Form B) on Day 1. Compound I Day 1 300 mg QD N ::: 3 Mean Cmax 40.2a I max 4.67 AUC!ast (h* ng / mL) ........413a.......... SD 28.1 1.15 266 Min 10.2 4.00 106 Median 44.3 4.00 554 Max 66.0 6.00 580 CV% 70.0 24.7 64.4 aCmax of 55.2 and AUCiasi of 567 obtained upon exclusion of data for patient that vomited immediately after dosing. Table 52. Noncompartmental Pharmacokinetic Parameters of Compound I for Cohort 3 (400 mg QD of Form B) on Day 1. Compound I Day 1 400 mg QD N = 3    Cmax   Tmai   AUCiast (ng / mL) (h) (h*ng / mL) ....................................................................................................Mean............20J............6.00..............202.......... SD 5.16 0.00 39.2 Min 14.4 6.00 177 Median 21.6 6.00 183 Max 24.4 6.00 248 CV% 25.6 0.0 19.4 2024205055   24 Jul 2024 Table 53, Noncomparmental Pharmacokinetic Parameters of Compound I for Cohort 4 (500 mg QD of Form B) on Day 1. Compound I Day 1 500 mg QD N = 4 Mean Cm ax 48.9 Tmax (h) 5.75 AUClast (h*ng / mL) 577 SD 16.7 2.06 121 Min 27.8 3.00 403 Median 49.6 6.00 611 Max 68.7 8.00 684 CV% 34.2 35.9 21.0 5 Table 54, Noncomparmental Pharmacokinetic Parameters of Compound I for Cohort 5 (650 mg QD of Form B) on Day 1. Compound I Day 1 650 mg QD N ::: 6 Mean Cmax Jng / mLL 62.5 I max 7.67 AUClast (h*ng / mL) .........799".......... SD 17.8 1.97 224 Min 38.2 4.00 482 Median 67.0 8.00 805 Max 80.7 10.0 1040 CV% 28.5 25.6 28.0 Table 55, Noncompartmental Pharmacokinetic Data of Compound I for Cohort 6 (100 mg 10 BID of Form B) on Day 1. Compound I Day 1 100 mg BID N = 6 Mean Cm ax ...w™y... 10.2 I max (h) 3.17 AUClast (h*ng / mL) 59.7 SD 3.15 0.753 20.1 Min 7.25 2.00 42.8 Median 8.95 3.00 53.1 Max 14,7 4.00 92.6 CV% 30.8 23.8 33.6 2024205055   24 Jul 2024 Table 56. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 7 (150 mg BID of Form B) on Day 1. Compound I Day 1 150 mg BID N = 3 Cm ax (ng / mL) Tmax (h) AUClast (h* ng / mL) Mean 21.7 3.67 130 SD 8.43 0.577 23.7 Min 12.2 3.00 103 Median 24.6 4.00 141 Max 28.3 4.00 146 CV% 38.9 15.7 18.2 5 Table 57. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 7 (200 mg BID of Form B) on Day 1. Compound I Day 1 200 mg BID N = 4 Cm ax Tmax (h) AUClast Mean 17.3 5.00 118 SD 10.3 1.15 62.1 Min 5.28 4.00 37.9 Median 17.6 5,00 .125 Mux 29.0 6.00 185 CV% 59.6 23.1 52.6 The Day 29 pharmacokinetic parameters for compound I for all cohorts is provided in 10 Tables 58 to 65. Table 58. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 1 (200 mg QD of Form B) on Day 29. 200 mg QD N = 5 Cm ax Tmax (h) AUC!asS (h*ng / mL) Race ((h * ng / m L) / (h * ng / m L)) Mean 20.4 4.20 229 1.17 SD 9.52 1.10 126 0.362 Min 5.90 3.00 73.2 0.740 Median 21.3 4.00 227 1.15 Max 32.0 6.00 407 1.72 CV% 46.6 26.1 55.0 31.1 2024205055   24 Jul 2024 Table 59. Ntmcompartmental Pharmacokinetic Data of Compound I for Cohort 2 (300 mg QD of Form B) on Day 29. 300 mg QD N = 3 Cmax Tmax AUCiast Race Mean 47.0a _______w_______ 6.00 O’ ug / ms.j pn 592 2.03 SD 23.4 3.46 203 1.39 Min 27.5 4.00 384 1.04 Median 40.5 4.00 604 1.42 Max 73.0 10.0 789 3.62 CV% 49.9 57.7 34.2 68.6 5 Table 60. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 3 (400 mg QD of Form B) on Day 29. 400 mg QD N = 3 Cmax Tmax (h) AUCiast (h*ng / mL) Race ((h * ng / m L) / (h * ng / m L)) Mean 19.0 5.33 278 1.35 SD 10.6 1.15 142 0.639 Min 6.94 4.00 115 0.653 Median 23,5 6.00 348 1.50 Max 26.7 6.00 371 1.90 CV% 55.7 21.7 50.9 47.2 Table 61. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 4 (500 mg 10 QD of Form B) on Day 29. 500 mg QD N === 3 Mean Cmax 43.2 I max A 5.33 AL Clast (h*ng / mL) 607"'......... Race ((h * ng / mL) / (h * ng / mL)) . .................... SD 6.10 1.15 47.3 0.300 Min 36.4 4.00 570 0.932 Median 45.0 6.00 591 0.965 Max 48.2 6.00 660 1.47 CV% 14.1 21.7 7.8 26.7 2024205055   24 Jul 2024 Table 62. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 5 (650 mg QD of Form B) on Day 29. 650 mg QD N = 2 Cmax Tmax (h) AUCiast (h*ng / mL) ...((h.*Pg / mL) / (h*ng / mL)) Mean 43.2 5.33 607 1.12 SD 6.10 1.15 47.3 0.300 Min 36.4 4.00 570 0.932 Median 45.0 6.00 591 0.965 Max 48.2 6.00 660 1.47 CV% 14.1 21.7 7.8 26.7 5 Table 63. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 6 (100 mg BID of Form B) on Day 29. 100 mg BID N = 5 Cmax Tmax (h) AUCiast (h*ng / mL) Race ((h*ng / mL) / (h*ng / mL)) Mean 12.3 4.40 101 1.90 SD 6.01 4.39 51.8 0.851 Min 5.14 1.00 41.1 0.931 Median 11.8 3,00 88,2 2,06 Max 20.5 12.0 183 2.96 CV% 49.0 99.8 51.5 44.7 Table 64. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 7 (150 mg 10 BI D of Form B) on Day 29. 150 mg BID N === 3 Mean Cmax 50.2 I max 4.00 AUCiast (h*ng / mL) 455......... Race. ((h * ng / m L) / £h * ng / mL)) "    3 38..................... SD 28.8 0.00 299 3.33 Min 30.5 4.00 235 1.66 Median 36.9 4.00 334 2.28 Max 83.2 4.00 795 7.71 CV% 57.3 0.0 65.7 85.7 2024205055   24 Jul 2024 Table 65. Noncompartmental Pharmacokinetic Data of Compound I for Cohort 8 (200 mg BID of Form B) on Day 29. 200 mg BID N = 3 Cmax Tmax AUCiast Race Mean ...yg / ^y... (h) (h*ng / mL) ((h*ng / mL) / (h*ng / m L)) 26.3 6.67 197 2.06 SD 16.9 4.62 113 0.128 Min 7.69 4.00 79.8 1.91 Median 30.5 4.00 205 2.11 Max 40.8 12.0 306 2.15 CV% 64.4 69.3 57.5 6.2 The Day 1 pharmacokinetic parameters for Compound III for all cohorts is provided in Tables 66 to 73, Table 66. Noncompartmental Pharmacokinetic Data of Componnd III for Cohort 1 (200 mg QD of Form B) on Day 1. Compound III Day 1 200 mg QD N ::: 6 Mean Cm ax ..w™y... 4.18 fmax (h) 4.17 AUCiast (h*ng / mL) 23.7 SD 2.41 0.983 19.6 Min 1.27 3.00 5.29 Median 3.88 4.00 21.3 Max 7.82 6.00 58.5 CV% 57.6 23.6 82.7 Table 67. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 2 (300 mg QD of Form B) on Day 1. Compound III Day 1 300 mg QD N = 3 Cma Tmax AUCiast ............................................................................................................................... 01)........(h*ng / n?L). Mean 4.81 3.67 43.1 SD 2.59 2.52 28.5 Min 1.82 1.00 10.9 Median 6.21 4.00 53.1 Max 6.40 6.00 65.2 CV% 53.9 68.6 66.1 2024205055   24 Jul 2024 Table 68. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 3 (400 mg QD of Form B) on Day 1. Compound III Day 1 400 mg QD N = 3 Mean Cmax I max (h) AUCiast (h*ng / mL) 25.6 4.85 4.33 SD 1.93 2.89 6.81 Min 3.02 1.00 17.8 Median 4.66 6.00 29.2 Max 6.87 6.00 29.8 CV% 39.8 66.6 26.6 Table 69. Noncompartmental Pharmacokinetic Data of Compound HI for Cohort 4 (500 mg QD of Form B) on Day 1. Compound III Day 1 500 mg QD N = 4 Mean Cmax ,.w™y... I max (h) AUCiast (h*ng / mL) 77.7 7.98 5.50 SD 1.13 1.00 12.9 Min 6.84 4.00 61.6 Median 8.03 6.00 79.0 Max 9.03 6.00 91.4 CV% 14.2 18.2 16.7 Table 70. Noncompartmental Pharmacokinetic Data of Compound HI for Cohort 5 (650 10 mg QD of Form B) on Day 1. Compound III Day 1 650 mg QD N ::: 6 Mean Cmax 10.9 fmax 6.67 AUCiast (h*ng / mL) ..........123 SD 3.71 1.63 40.1 Min 5.56 4.00 61.8 Median 10.4 7.00 125 Max 16.5 8.00 174 CV% 34.2 24.5 32.6 2024205055   24 Jul 2024 Table 71. Noncompartmental Pharmacokinetic Data of Compound HI for Cohort 6 (100 mg BID of Form B) on Day 1. Compound III Day 1 100 mg BID N = 6 Cmax Tmax (h) AUCfast (h*ng / mL) Mean 1.59 3.17 5.37 SD 0.343 0.753 2.32 Min 1.11 2.00 2.87 Median 1.60 3.00 5.18 Max 2.12 4.00 8.61 CV% 21.6 23.8 43.3 Table 72. Noncompartmental Pharmacokinetic Data of Compound HI for Cohort 7 (150 mg BID of Form B) on Day 1. Compound III Day 1 150 mg BID N = 3 Tmax (h) AUClast (h*ng / mL) Mean 3.20 3.00 16.5 SD 0.409 1.00 0.929 Min 2.93 2.00 15.7 Median 3.00 3.00 16.3 Max 3.67 4.00 17.5 CV% 12.8 33.3 5.6 Table 73. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 8 (200 10  mg BID of Form B) on Day 1. Compound III Day 1 200 mg BID N = 4 CL max Tmax (h) AUClast (h*ng / mL) Mean 2.87 4.75 17.2 SD 1.19 1.50 8.49 Min 1.40 3.00 6.18 Median 3.00 5.00 18.6 Max 4.07 6.00 25.4 CV% 41.6 31.6 49.5 The Day 29 pharmacokinetic parameters for Compound III for all cohorts is provided in Tables 74 to 81. 2024205055   24 Jul 2024 Table 74. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 1 (200 mg QD of Form B) on Day 29. Compound III Day 29 200 mg QD N = 5 Cmax (ng / mL) Tmax (h) AUCiast (h*ng / mL) Mean 3.14 4.20 27.9 SD 1.96 1.10 23.5 Min 0.864 3.00 1.97 Median 2.52 4.00 25.4 Max 6.11 6.00 64.2 CV% 62.3 26.1 84.3 Table 75. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 2 (300 mg QD of Form B) on Day 29. Compound III Day 29 300 mg QD N = 3 Cmax (ng / mL) Ts!!ax (h) AUCiast (h*ng / mL) Mean 5.44 5.33 66.2 SD 0.683 2.31 27.6 Min 4.70 4.00 45.1 Median 5.56 4.00 56.1 Max 6.05 8.00 97.5 CV% 12.6 43.3 41.7 10 Table 76. Noncompartmental Pharmacokinetic Data of Compound HI for Cohort 3 (400 mg QD of Form B) on Day 29. Compound III Day 29 400 mg QD N ::: 3 Umax I max AUCiast (h*ng / mL) Mean 3.50 5.33 42.6 SD 0.999 1.15 11.4 Min 2.55 4.00 32.2 Median 3.40 6.00 40.9 Max 4.54 6.00 54.7 CV% 28.6 21.7 26.7 2024205055   24 Jul 2024 Table 77. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 4 (500 mg QD of Form B) on Day 29. Compound III Day 29 500 mg QD N = 3 Cniax I max (h) AUCIast (h*ng / mL) Mean 5.98 3.67 66.4 SD 1.71 0.577 5.73 Min 4.66 3.00 59.8 Median 5.37 4.00 69.6 Max 7.91 4.00 69.8 CV% 28.6 15.7 8.6 5 Table 78. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 5 (650 mg QD of Form B) on Day 29. Compound III Day 29 650 mg QD N = 2 Cmax (ng / mL) Tmax (h) AUCiast (h*ng / mL) Mean 8.70 7.00 125 SD 4.81 1.41 62.2 Min 5.30 6.00 80.6 Median 8.70 7.00 125 Max 12.1 8.00 169 CV% 55.3 20.2 49.9 Table 79. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 6 (100 10 mg BID of Form B) on Day 29. Compound III Day 29 100 mg BID N = 5 Cmax (ng / mL) I max (h) AUClast (h* ng / mL) Mean 1.89 4.40 13.0 SD 0.977 4.34 7.91 Min 0.855 2.00 3.45 Median 1.56 2.00 9.86 Max 3.11 12.0 21.6 CV% 51.8 98.5 60.8 2024205055   24 Jul 2024 Table 80. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 7 (150 mg BID of Form B) on Day 29. Compound III Day 29 150 mg BID N = 3 Cmax Tmax AUCiast (ng / mL) (h) (h*ng / mL) Mean 6.23 3.00 47.9 SD 5.18 1.00 46.0 Min 2.93 2.00 19.4 Median 3.55 3.00 23.3 Max 12.2 4.00 101 CV% 83.2 33.3 96.1 5 Table 81. Noncompartmental Pharmacokinetic Data of Compound III for Cohort 8 (200 mg BID of Form B) on Day 29. Compound III Day 29 200 mg BID N = 3 Cmax Tmax AUCiast (ng / mL) (h) (h*ng / mL) Mean 2.79 6.33 22.0 SD 1.32 4.93 8.01 Min 1.49 3.00 15.2 Median 2.77 4.00 20.1 Max 4.12 12.0 30.8 CV% 47.1 77.9 36.4 2024205055   24 Jul 2024 Tables 82A, 82B, and 82C provide baseline characteristics and patient disposition for all dosage cohorts studied. 5 Table 82A. Baseline Characteristics Dose (mg) Age, median years (range) ECOG PS, n (%) Menopausal status, n (%) Visceral metastasis, n (%) 0 1 Pre / peri menopausal postmenopausal 200 QD 58 4 2 1 5 4 (n 6) (44, 69) (67) (33) (17) (83) (67) 300 QD 46 1 2 0 3 3 (n=3) (45, 72) (33) (67) (100) (100) 400 QD 55 0 1 3 (n=3) (50, 59) (100) (33) (67) (100) 500 QD 54 0 1 2 3 (n 3) (25, 63) (100) (33) (67) (100) 650 QD 63 5 1 0 6 6 (n=6) (56, 65) (83) (17) (100) (100) 100 BID 61 5 1 1 5 5 (n 6) (47, 67) (83) (17) (17) (83) (83) 150 BID 55 2 1 1 2 2 (n 3) (40, 59) (67) (33) (33) (67) (67) 200 BID 53 3 0 1 2 2 (n=3) (47, 63) (100) (33) (67) (67) All cohorts 59 26 7 6 27 25 (n 33) (25, 72) (79) (21) (18) (82) (76) 2024205055   24 Jul 2024 Table 82B. Baseline Characteristics, Continued Dose (mg) Prior Lines of Therapy, median (range) Prior Aromatase Inhibitor Therapy, n (%) Total Endocrine Chemotherapy 200 QD 2 2 0.5 5 (n=6) (2-4) (1-2) (0-2) (83) 300 QD 3 1 2 1 (n=3) (1-3) (1-3) (0-2) (33) 400 QD 3 2 1 (n 3) (3-4) (1-3) (1-2) (100) 500 QD 3 2 ] 2 (n=3) (2-3) (1-2) (1-1) (67) 650 QD 3.5 2 3 (n=6) (3-8) (1-5) (1-3) (75) 100 BID 2 1 1 2 (n=6) (1-3) (0-2) (1-3) (33) 150 BID 5 3 2 3 (n=3) (5-6) (3-3) (2-3) (100) 200 BID 5.5 3.5 1.5 1 0= 3) (3-8) (2-5) (1-2) (50) All cohorts 3 2 1 20 (n 33) (1-8) (0-5) (1-3) (67) 2024205055   24 Jul 2024 Table 82C. Patient Disposition Dose (mg) Ongoing Treatment Discontinued Total Adverse Event Disease Progression Patient Decision 200 QD (11=6) 3(50) 3 (50) 0 2 1 300 QD (11=3) 2(67) 1 (33) 0 1 0 400 QD (n=3) 2(67) 1 (33) 0 1 0 500 QD (n=3) 2(67) 1 (33) 0 1 0 650 QD (11=6) 6(100) 0 0 0 0 100 BID (n=6) 3 (50) 3 (50) 0 2 ] 150 BID (11=3) 3(50) 3 (50) 0 2 1 200 BID (n 3) 3 (50) 3 (50) 0 0 0 All cohorts (n=33) 22 (67) 11 (33) 0 10 1 2024205055   24 Jul 2024 Table 83 provides a summary of adverse events for all dosing cohorts by CTCAE grade and frequency. Table 83. Adverse Events by CTCAE Grade and Frequency Dose (mg) Neutropenia Leukopenia Nausea Diarrhea Vomiting Anemia Fatigue Thrombocytopenia Hematuria ALT increase SCr increased BUN increased AST increased Febrile neutropenia GGT increased Lymphopenia Metrorrhagia Stomatitis 200 QD 4 4 0 1 0 3 0 0 1 0 0 1 0 0 0 1 0 0 300 QD 9 2 2 2 2 1 1 1 1 0 0 1 0 0 0 0 o 0 400 QD 3 0 3 2 3 2 2 1 1 1 0 0 1 0 1 0 0 0 500 QD 3 1 3 1 1 2 1 3 0 1 1 0 0 o 0 0 0 0 650 QD 2 2 3 4 5 0 1 0 0 0 0 0 0 0 0 0 0 0 too BID 4 3 9 1 0 2 1 1 1 0 1 0 0 0 0 0 0 0 150 BID 3 3 1 2 1 1 1 1 1 0 0 0 0 1 0 0 1 1 200 BID 2 1 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 Total Grade 1 6 4 8 6 5 9 5 5 5 1 2 9 0 0 0 0 0 0 Grade 2 7 9 7 8 3 2 3 2 0 1 0 0 1 0 1 1 1 1 Grade 9 3 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 Grade 4 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 All Grades 24 16 15 14 12 11 8 / 5 2 2 9 1 1 1 1 1 1 Example 3. Calculation of Pharmacokinetic Parameters for Compound I for Adminis tration of a Single Dose of Form B of Compound II in Healthy Volunteers Table 84 provides the pharmacokinetic parameters of Compound I upon administration of 10 a single dose of Form B of Compound II (48, 100, 200, 300, 400, or 600 mg) in healthy volunteers. 2024205055   24 Jul 2024 Blood samples for analysis of Compound I were collected pre-dose and 0.25, 0.5, I, 1.5, 2, 3, 4, 6, 8, 12, 24, 36, 48, 72, and 96 hours post-dose. Table 84. Pharmacokinetics of Compound I in Healthy Volunteers After a Single Dose of 5 Form B of Compound II (CV%) CMC L / h (CV%) v / f, (CV%) Dose (mg) n Tmax, h (min, max) Cmax, ng / mL (CV%) AUCo-inf, ng*h / mL (CV%) 48 3 2.0 (1.97, 3.0) 3.65 (64.6) 20.4 (116.1) 3.07 (57.5) 2354 (116.1) 10427 (40.6) 100 3 2.0 (2.0, 4.0) 9.23 (51.0) 60.2 (18.8) 4.71 (10.8) 1660 (18.8) 11277 (27.8) 200 6 3.0 (2.0, 3.0) 29.3 (21.6) 275 (19.7) 13.8 (17.5) 727 (19.7) 14514 (23.1) ""300”'" 6 (3.0, 6.0) 27 0 (38.6) (51.2) (24.3) (51.2) 19130 (47.0) 400 6 5.0 (1.5, 6.0) 26.3 (70.6) 432 (92.0) 14.9 (36.3) 926 (92.0) 19915 (63.8) 600 4 6.0 (6.0, 8.0) 59.0 (49.5) 886 (43.4) 17.2 (27.2) 677 (43.4) 16822 (45.1) Example 4. Comparison of Steady-State Pharmacokinetic Parameters of Compound I, Palbociclib, and Ribociclib. The mean steady-state AUC (AUCo-24,ss) and (mean AUCo-24,ss) / dose (mg) was determined 10 for compound I from Day 29 concentration versus time data obtained in Example 1 and compared to published steady state AUC data for palbociclib (see Flaherty et al. Clin. Cancer Res. 2012, 18, 568-576; FDA Clin. Pharm. Review, Appl. No. 2071030rigls000, submitted August 13, 2014), ribociclib (see FDA Multi-Discipline Review, Appl. No. 2090920rigls000, submitted August 29, 2016), and abemaciclib (see Patnaik et al., Cancer Discov. 2016, 7, 740-53). The time to reach 15 steady state was defined as five half-lives (97% steady state achieved). A summary of time to steady-state for Compound I, palbociclib, and ribociclib is provided in Table 85. 2024205055   24 Jul 2024 Table 85. Mean Half-Life and Time to Steady-State for Compound I, Palbociclib, and Ribociclib. Compound Mean Half-Life (hr) Time to Steady-State (hr) Time to Steady State (days) Compound I 200 mg QD of Form B of Compound II 15.2 76 3.2 Palbociclib 125 mga QD 26.5 132.5 5.5 Ribociclib 600 mga QD 32.5 162.5 6.8 aFDA labeled doses of each drag. The (mean AUCo-24,ss) / dose was calculated for Compound I from Day 29 pharmacokinetic parameters for QD dosing of 200 mg, 300 mg, 400 mg, 500 mg, and 650 mg of Form B of Compound II as summarized in Table 86. Table 86. Steady State Pharmacokinetic Parameters of Compound I for QD Dosing of Form B of Compound II. QD Dose (mg) N = Mean Cmax (ng / mL) Mean AUCo-24,ss (h* ng / mL) (Mean AUCo-24,ss) / Dose (mg) 200        5 20.4 229 1.15 300        3 47.0 592 1.97 400        3 ----- ------ 66.0 2024205055   24 Jul 2024 The steady-state AUC0-24 for various doses of palbociclib provided in Table 87 was extrapolated from the above provided AUC0-10 data from previous published studies by the following formula: AUCo-24=(AUCo-io)*2.49655.The AUC data are presented as the arithmetic mean. 5 Table 87. Steady State AUC of Palbociclib for QD Dosing. QD Dose (mg) N = AUCo-io,ss Extrapolated Extrapolated (ng*h / mL) AUCo-24,ss (AUCo-24,ss) (ng*h / mL) / dose (mg) 25 3       119          297          11.88 50 3      274          684          13.68 7      492         1228         1637 3       592         1478          14.78 22 150 3      1084         2706          18.04 The steady-state AUC0-24 for various doses of ribociclib provided in Table 88 was obtained from the above cited prior published studies. The AUC data are presented as the geometric mean. 10 2024205055   24 Jul 2024 Table 88. Steady-State AUC of Ribociclib for QD Dosing. QD Dose (mg) N == AUCo-24,ss (h*ng / mL) (A UCo-24,ss) / dose (mg) 50 2-3 770 15.40 70 2 1000 14.29 140 3 2490 17.79 260 4 5990 23.04 280 3 6600 23.57 350 4 15300 43.71 400 4 14700 36.75 1244 26600 750 4-6 2953 48.33 1200 1 51800 43.17 The steady-state AUC0-24 for various BID doses of abemaciclib provided in Table 89 was 5 obtained from the above cited prior published studies. The AUC data are presented as the geometric mean. Table 89. Steady-State AUC for Abemaciclib for BID Dosing. BID Dose (mg) N = AUC«-24,ss (AUCo-24,ss)' (h*ng / mL) Dose (mg) 200 52 5520 27.60 2024205055   24 Jul 2024 Compound I consistently had (AUCo-24,ss) / Dose values not greater than 5, while those reported for palbociclib, ribociclib, and abemaciclib are consistently above 5. The apparent volume of distribution (Vd / F) was calculated from the terminal rate constant (ke) derived from the plasma concentration-versus-time data provided for Compound I in Example 5   1 when dosed with 200 mg QD of Form B of Compound II. A comparison of apparent volume of distribution (Vd / F) for Compound I, palbociclib, and ribociclib is provided in Table 90. Table 90. Apparent Volume of Distribution (Vd / F) for Compound I, Palbociclib, and 10 Ribociclib. Drug                              Mean Vd / F (L) Compound I, (200 mg QD of compound II) 15200 Palbociclib, (125 mg QD)                 2583 Ribociclib, (600 mg QD)                  1090 Example 5. Calculation of (AUCo-24,ss) / ANC of Compound I for QD Dosing of Form B of Compound II and Analysis of Mean Percent Change in ANC. 15          Absolute neutrophil count (ANC) ’was determined from the blood sample obtained from subjects described in Example 1 on day 22 using standard methods. The steady-state AUC (AUCo-24,ss) was calculated as described in Example 3 for 200 mg, 300 mg, 400 mg, and 500 mg once a day (QD) doses of Form B of Compound II. As shown in Table 91, (AUCo-24,ss) / ANC was consistently less than 1.25 for all the doses examined. The Mean ANC (1()9 cells / L) combined for 20 all dosing cohorts over 89 weeks of dosing showed vary little variation as provided in Table 92. 2024205055   24 Jul 2024 Table 91. (AU Co-24,ss) / ANC Ratio of Compound I for QI) Dosing of Form B of Compound II. QD Dose (mg) N ::: Mean AUCo-24,ss (h*ng / mL) Day 22 ANC, Mean (AUCo-24,ss) (eells / mm3)         / ANC 200        5 229 2260            0.10 300        3 592 1267            0.47 400       6 / 3* 278 1802            0.15 500       6 / 3* 607 1338            0.45 650       6 / 3* 956 1077            0.89 ’number of patients with available ANC data / number of patients with available AUC data Table 92. Mean / INC Over Time for All Dosing Cohorts of Form B of Compound IL Week N = Mean ANC (109 cells / L) 4 (Day 22) 79 1.53 8 63 1.79 12 44 1.87 17 36 1.87 21 31 1.53 25 £ ! 1.55 29 ----- 41 18 1.88 45 16 1.99 49 14 1.72 53 13 1.82 57 12 1.76 61 10 1.63 65 9 1.86 69 8 1.80 73 5 1.96 2024205055   24 Jul 2024 Week N = Mean ANC (109 cells / L) 77 5 1.84 81 3 1.91 85 3 2.00 89 3 2.52 Absolute neutrophil count (ANC) was also determined for blood samples obtained from subjects in all dosing cohorts (200 mg QD, 300 rag QD, 400 mg QD, 500 mg QD, 100 mg BID, and 150 mg BID dosage of Form B of Compound II). The mean ANC results over time for the 5 different dosing cohorts is shown in Figure 1. The mean ANC percent change for different dosing cohorts is shown in Figure 2. Table 93 show's the mean ANC percentage change on Day 29 for all QD dosing cohorts. Table 93. Day 29 Mean ANC Percentage Change from Baseline by QD Dose of Form B of 10 Compound IL QD Dose (mg) N = Day 29 Mean ANC % Change 200 6 -48% 300 -66% 400 -50% 500 3 -74% Example 6. Evaluation of Efficacy of Combination of Form B of Compound II and Fulvestrant in Patients with HR+, HER2- Locally Advanced or Metastatic Breast Cancer. Target lesions in subjects from Example 1 were evaluated every 8 weeks using the 15 RECIST, Version 1.1 criteria (Eisenhower 2009) as follows: Complete Response (CR): Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to < 10 mm. Partial Response (PR): At least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. 2024205055 . 24 Jul 2024 Progressive Disease (PD): At least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions was also considered progression. Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum of diameters while on study. A response category of not evaluable (NE) was used when there was inadequate information to otherwise categorize the response status. Non-target lesions were evaluated using the following criteria: Complete Response (CR): Disappearance of all nontarget lesions and normalization of tumor marker level. All lymph nodes must be < 10 mm short axis. Non-CR / Non-PD: Persistence of 1 or more nontarget lesions and / or maintenance of tumor marker level above the normal limits. 15          Progressive Disease (PD): Unequivocal progression of existing nontarget lesions or the appearance of at least one new7 lesion. The overall response (OR) was determined by evaluation of the combination of target and nontarget lesion responses as outlined in Table 94. 20 Table 94. Evaluation of Overall Response at Each Time Point Target Lesions Nontarget Lesions New Lesions Overall Response CR CR No CR CR Non-CR / Non-PD No PR CR Not evaluated No PR PR Non-PD / not evaluated No PR SD Non-PD / not evaluated No SD NE Non-PD NO NE PD Any Yes or No PD Any PD Yes or No PD Any Any "Yes PD 2024205055   24 Jul 2024 The clinical efficacy of the combination of Form B of Compound II and fulvestrant for QD dosing for the subjects from Example 1 was evaluated using the above criteria. The clinical efficacy results are outlined in Table 95. The clinical benefit rate (CBR) was determined by evaluating the sum of patients with an overall response of CR, PR, and SD after more than 24 5 weeks of continuous treatment. The median time to response was 12 weeks. Table 95. Clinical Efficacy of a Combination of Form B of Compound II and Fulvestrant Overall Response (OR) Response Level (%) PR 4 / 20 (20%) SD 13 / 20 (65%) PD 3 / 20 (15%) CBR (> 24 weeks) 8 / 14 (57%) A waterfall plot of the best percentage change from baseline for target lesions per patient 10 is provided in Figure 3. A spider plot of the percent change from baseline over time for target lesions by patient every 8 weeks is provided in Figure 4. Both of these plots demonstrate the effective anti-tumor activity of Form B. Example 7. Compoun...

Claims

1. Use of a cyclin dependent kinase 4 / 6 (CDK4 / 6) inhibitor compound of structure:(Compound I), or a pharmaceutically acceptablecomposition, salt or isotopic analog thereof,in the manufacture of a medicament for treating a CDK4 / 6 replication dependent cancer in a human, wherein the medicament is to be orally administered in a dosing regime which provides a (mean AUC(0-24)ss (h*ng / mL)) / (dose (mg)) ratio of Compound I in humans of less than 5, and wherein Compound I is to be administered in a dose selected from about 100 mg, about 150 mg, or about 200 mg twice a day.

2. The use of claim 1, wherein the dosing regime provides a (mean AUC(0-24)ss (h*ng / mL)) / (dose (mg)) ratio in humans of less than 3.

3. Use of a CDK4 / 6 inhibitor compound of structure:(Compound I), or a pharmaceutically acceptablecomposition, salt or isotopic analog thereof,in the manufacture of a medicament for treating a CDK4 / 6 replication dependent cancer in ahuman, wherein the medicament is to be orally administered in a dosing regime which provides a (mean AUC(0-24)ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio of Compound I in2024205055   16 Jul 2026humans of less than 1.25 on day 22 of dosing, and wherein Compound I is to be administered in a dose selected from about 100 mg, about 150 mg, or about 200 mg twice a day.

4. A method of treating a human with a CDK4 / 6 replication dependent cancer comprising administering a dosing regime comprising oral administration of a solid dosage form comprising a CDK4 / 6 inhibitor compound of structure:nh'---'       (Compound I), or a pharmaceutically acceptablecomposition, salt or isotopic analog thereof, wherein the dosing regime provides a (mean AUC(0-24)ss (h*ng / mL)) / (dose (mg)) ratio in humans of less than 5, and wherein Compound I is administered in a dose selected from about 100 mg, about 150 mg, or about 200 mg twice a day.

5. The method of claim 4, wherein the dosing regime provides a (mean AUC(0-24)ss (h*ng / mL)) / (dose (mg)) ratio in humans of less than 3.

6. The method of claim 4, wherein the dosing regime provides a Vd / F in humans of greater than about 10,000 L.

7. A method of treating a human with a CDK4 / 6 replication dependent cancer comprising administering a dosing regime comprising oral administration of a solid dosage form comprising a CDK4 / 6 inhibitor compound of structure:2024205055   16 Jul 2026(Compound I), or a pharmaceutically acceptablecomposition, salt or isotopic analog thereof,wherein the dosing regime provides a (mean AUC(0-24)ss (h*ng / mL)) / (Absolute Neutrophil Count (cells / mm3)) ratio in humans of less than 1.25 on day 22 of dosing, and whereinCompound I is administered in a dose selected from about 100 mg, about 150 mg, or about 200 mg twice a day.

8. The method of any one of claims 4-7, wherein the cancer is selected from the group consisting of breast cancer, non-small cell cancer, liver cancer, prostate cancer, hematological cancer, liposarcoma, melanoma, colon cancer, endometrial cancer, sarcoma, pancreatic cancer, and gastrointestinal stromal tumor (GIST).

9. The method of any one of claims 4-8, wherein the dosing regime is administered for at least 28 days.

10. The method of any one of claims 4-9, wherein one or more additional therapeutic agents are administered to the human.

11. The method of any one of claims 4-10, wherein the cancer is selected from the group consisting of HR+ / HER2- breast cancer, HR- / HER2+ breast cancer, EGFR mutant non-small cell carcinoma, KRAS mutant non-small cell lung carcinoma, hepatocellular carcinoma, uterine cancer, castrate resistant prostate cancer, mantle cell lymphoma, marginal zone lymphoma, chronic lymphocytic leukemia, follicular lymphoma, diffuse large B-cell lymphoma, BRAF mutant melanoma, RAS mutant colorectal cancer, RAS mutant pancreatic cancer, RAS mutant cholangiocarcinoma, and gastrointestinal stromal tumor (GIST).2024205055   16 Jul 202612. The method of claim 11, wherein the cancer is HR+ / HER2- breast cancer and an additional therapeutic agent is administered to the human, wherein the additional therapeutic agent is an anti estrogen compound selected from the group consisting of tamoxifen, raloxifene, fulvestrant, letrozole, anastrozole, and exemestane.

13. The method of claim 12, wherein the anti-estrogen compound is letrozole.

14. The method of claim 12, wherein the anti-estrogen compound is fulvestrant.

15. The method of any one of claims 12-14, wherein Compound I and anti-estrogen compoundare administered after endocrine therapy failure.

16. The method of any one of claims 4-15, wherein Compound I is administered in a dose of about 100 mg.

17. The method of any one of claims 4-15, wherein Compound I is administered in a dose of about 150 mg.

18. The method of any one of claims 4-15, wherein Compound I is administered in a dose of about 200 mg.

19. The use of any one of claims 1-3, or the method of any one of claims 4-18, wherein theCDK4 / 6 inhibitor compound is of structure:(Compound II).

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