Improved Lyophilized Formulations

Abstract

Provided herein are improved formulations of tagraxofusp for lyophilization, which are used to produce stable formulations of tagraxofusp for intravenous injection.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to U.S. Provisional Application No. 63 / 123,589, filed December 10, 2020, the disclosure of which is incorporated by reference in its entirety herein.

[0002] Improved lyophilized formulations of tagraxofusp with enhanced stability and methods for making same.

[0003] Sequence Listing This application contains a Sequence Listing that has been submitted electronically in ASCII format via EFS-Web and is hereby incorporated by reference in its entirety. The ASCII copy created on December 7, 2021 is named 2021-12-07_01214-0022-00PCT_Seq_List_ST25.txt and is 4,806 bytes in size. [Background technology]

[0004] Intravenous therapy (IV) or drug delivery delivers fluids directly into a vein. The intravenous route of administration can be used for both injections using a syringe at higher pressure, as well as infusions that typically use only gravity-fed pressure (also called drip). The intravenous route delivers drugs rapidly throughout the body by introducing the therapeutic agent directly into the circulation. This introduction of the drug formulation directly into the bloodstream makes 100% of the formulation bioavailable, but it also means that the formulation must immediately match the subject's physiology, limiting the acceptable ingredients within the formulation. Injectable products can be sterile, pyrogen-free, free of particulate matter when in solution, and isotonic. In addition, the ingredients must be able to withstand terminal sterilization or aseptic manufacturing processes.

[0005] Provided herein are stable, pharma- ceutically acceptable formulations for intravenous injection of tagraxofusp, as well as formulations and methods for making same. Summary of the Invention

[0006] Provided herein are stable, pharma- ceutically acceptable formulations for intravenous injection of tagraxofusp, as exemplified by the non-limiting list of embodiments below.

[0007] Embodiment 1 is a stable solution for lyophilization in a pharma- ceutically acceptable aqueous carrier, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; At least one buffering agent at 5-25 mM, and having a pH of 6.5-9.0; The surfactant has 3% or less peroxide.

[0008] Embodiment 2 is the lyophilization solution according to embodiment 1, wherein the lyophilization solution further comprises at least one bulking agent at 2-10% w / v.

[0009] Embodiment 3 is a lyophilized solution according to any one of the preceding embodiments, comprising 0.6-1.4 mg / mL tagraxofusp.

[0010] Embodiment 4 is a lyophilized solution according to any one of the preceding embodiments, comprising 0.7-1.3 mg / mL tagraxofusp.

[0011] Embodiment 5 is a lyophilized solution according to any one of the preceding embodiments, comprising 0.8-1.2 mg / mL tagraxofusp.

[0012] Embodiment 6 is a lyophilized solution according to any one of the preceding embodiments, comprising 1 mg / mL tagraxofusp.

[0013] Embodiment 7 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is present in an amount of 0.07-1.5% w / v.

[0014] Embodiment 8 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is present in an amount of 0.1-1.3% w / v.

[0015] Embodiment 9 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is present in an amount of 0.15-1.2% w / v.

[0016] Embodiment 10 is the lyophilized solution of any one of the preceding embodiments, wherein the surfactant is present in an amount of 0.25-1% w / v.

[0017] Embodiment 11 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is present in an amount of 0.24-0.26% w / v.

[0018] Embodiment 12 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is selected from a polysorbate or a poloxamer.

[0019] Embodiment 13 is a lyophilized solution according to any one of the preceding embodiments, wherein the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80.

[0020] Embodiment 14 is a lyophilization solution of any one of the preceding embodiments, wherein the surfactant is polysorbate 80.

[0021] Embodiment 15 is a lyophilized solution of any one of the preceding embodiments, wherein the disaccharide sugar is present in an amount of 2-8% w / v.

[0022] Embodiment 16 is a lyophilized solution of any one of the preceding embodiments, wherein the disaccharide sugar is present in an amount of 2-6% w / v.

[0023] Embodiment 17 is a lyophilized solution according to any one of the preceding embodiments, wherein the disaccharide sugar is present in an amount of 2-4% w / v.

[0024] Embodiment 18 is a lyophilized solution of any one of the preceding embodiments, wherein the disaccharide sugar is present in an amount of 2-3% w / v.

[0025] Embodiment 19 is a lyophilized solution according to any one of the preceding embodiments, wherein the disaccharide sugar is present in an amount of 2.45-2.55% w / v.

[0026] Embodiment 20 is a lyophilized solution according to any one of the preceding embodiments, wherein the disaccharide sugar is selected from trehalose, lactose, and sucrose.

[0027] Embodiment 21 is a lyophilized solution according to any one of the preceding embodiments, wherein the disaccharide sugar is sucrose.

[0028] Embodiment 22 is a lyophilized solution of any one of the preceding embodiments, wherein the bulking agent is present in an amount of 2-8% w / v.

[0029] Embodiment 23 is a lyophilized solution according to any one of the preceding embodiments, wherein the bulking agent is present in an amount of 2-6% w / v.

[0030] Embodiment 24 is a lyophilized solution of any one of the preceding embodiments, wherein the bulking agent is present in an amount of 2-4% w / v.

[0031] Embodiment 25 is a lyophilized solution according to any one of the preceding embodiments, wherein the bulking agent is present in an amount of 2-3% w / v.

[0032] Embodiment 26 is a lyophilized solution according to any one of the preceding embodiments, wherein the bulking agent is present in an amount of 2.45-2.55% w / v.

[0033] Embodiment 27 is a lyophilization solution according to any one of the preceding embodiments, wherein the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol.

[0034] Embodiment 28 is a lyophilized solution according to any one of the preceding embodiments, wherein the bulking agent is mannitol.

[0035] Embodiment 29 is a lyophilized solution according to any one of the preceding embodiments, wherein at least one buffering agent is at a concentration of 5 to 15 mM.

[0036] Embodiment 30 is a lyophilized solution of any one of the preceding embodiments, wherein the at least one buffering agent is at a concentration of 7 to 12 mM.

[0037] Embodiment 31 is a lyophilized solution according to any one of the preceding embodiments, wherein the at least one buffering agent is at a concentration of 10 mM.

[0038] Embodiment 32 is a lyophilization solution according to any one of the preceding embodiments, wherein the buffering agent is selected from phosphate, arginine, histidine, and Tris HCl.

[0039] Embodiment 33 is a lyophilized solution according to any one of the preceding embodiments, wherein the buffer is Tris HCl.

[0040] Embodiment 34 is a lyophilized solution according to any one of the preceding embodiments, wherein the pH is between 6.5 and 8.

[0041] Embodiment 35 is a lyophilized solution according to any one of the preceding embodiments, wherein the pH is between 7 and 8.

[0042] Embodiment 36 is a stable pharma- ceutically acceptable lyophilized solution in a pharma-ceutically acceptable aqueous medium, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl, It has a pH of 6.5 to 9. Polysorbate 80 has less than 3% peroxide.

[0043] Embodiment 37 is the lyophilized solution of embodiment 36, wherein the lyophilized solution further comprises 2-10% w / v mannitol.

[0044] Embodiment 38 is a lyophilized solution according to embodiment 36, 1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 9 to 11 mM Tris HCl; It has a pH of 6.5 to 9. Polysorbate 80 has less than 3% peroxide.

[0045] Embodiment 39 is a lyophile prepared from the lyophilization solution of any one of the preceding embodiments.

[0046] Embodiment 40 is a lyophilisate according to embodiment 41, wherein the relative abundance (%) of oxidized species of tagraxofusp does not increase to more than 2% or more than 1% over a period of 12 to 36 months.

[0047] Embodiment 41 is a lyophilisate according to embodiment 41, wherein the relative abundance (%) of the oxidized species of Tagraxofusp does not increase to more than 2% or more than 1% over a period of 18 to 24 months.

[0048] Embodiment 42 is a lyophilisate according to embodiment 41, wherein the relative abundance (%) of acidic species of tagraxofusp will not increase over the relative abundance (%) of the same acidic species of tagraxofusp in a liquid tagraxofusp formulation during storage for 18, 24 or 36 months.

[0049] Embodiment 43 is a lyophilizate according to embodiment 42, wherein the formulation provides a required dose of 1 to 1.5 mg on a dry weight basis.

[0050] Embodiment 44 is a lyophilisate according to embodiment 42 or 43, wherein the lyophilised dry product is stable at a storage temperature of 2° C. to 8° C. for at least 24 months.

[0051] Embodiment 45 is the lyophilized product according to any one of embodiments 42 to 44, wherein the lyophilized dry product is stable at a storage temperature of 2°C to 8°C for 24 months to 5 years.

[0052] Embodiment 46 is a lyophilizate according to any one of embodiments 42 to 45, having less than 2% or less than 1% oxidation impurities as determined by reversed phase ultra-performance chromatography (RP-UPLC).

[0053] Embodiment 47 is the lyophilisate according to any one of embodiments 42 to 46, wherein the oxidized impurity is measurable by mass spectrometry as a single peak at +16 Da from the tagraxofusp peak.

[0054] Embodiment 48 is a lyophilized product described in any one of embodiments 42 to 47, wherein in RP-UPLC analysis, the oxidized impurities are eluted before tagraxofusp, and the peak of the oxidized impurities in the RP-UPLC chromatogram is the peak closest to the peak of tagraxofusp.

[0055] Embodiment 49 is a stable lyophilisate, 1 mg of tagraxofusp, 25 mg of at least one disaccharide sugar; 25 mg of at least one surfactant; 2.4 mg of at least one buffering agent; The lyophilisate has less than 2% oxidation impurities as determined by reversed phase ultra-performance chromatography (RP-UPLC) for at least 24 months.

[0056] Embodiment 50 is a stable lyophilizate according to embodiment 49, further comprising 25 mg of at least one bulking agent.

[0057] Embodiment 51 is a stable lyophilisate according to embodiment 49 or 50, wherein the relative abundance (%) of the oxidized species of Tagraxofusp will not increase to more than 2% or more than 1% over a period of 18 to 24 months.

[0058] Embodiment 52 is a method for preparing a tagraxofusp lyophilisate, comprising the steps of: a) providing a lyophilized solution according to any one of embodiments 1 to 41; b) freeze-drying the solution to form a lyophilisate.

[0059] Embodiment 53 is the method according to embodiment 52, wherein the freeze-drying is carried out at a temperature of -40°C to 25°C for 2 to 7 days.

[0060] Embodiment 54 is the method of embodiment 52 or 53, wherein the freeze-drying comprises a loading step, at least one freezing step, at least one annealing step, and at least one drying step.

[0061] Embodiment 55 is the method of any one of embodiments 52 to 54, wherein the freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps, and at least one drying step.

[0062] Embodiment 56 is a method according to any one of embodiments 52 to 55, wherein the freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps carried out over a period of one day or less, and at least one drying step carried out over a period of one to five days.

[0063] Embodiment 57 is the method of any one of embodiments 52 to 56, wherein the lyophilization comprises the following lyophilization cycle: a) loading a sample containing a freeze-drying solution into a freeze-dryer, the sample being pre-cooled by lowering the temperature of the freeze-dryer to 10° C. for 10 minutes at ambient freeze-dryer pressure; b) freezing the sample in a first freezing step, where the temperature of the freeze-dryer is changed from 10° C. to −40° C. over a period of 180 minutes at ambient pressure in the freeze-dryer; c) freezing the sample in a second freezing step, in which the temperature of the freeze-dryer is held at -40°C for 60 minutes at ambient pressure of the freeze-dryer; d) annealing the sample in a first annealing step, in which the temperature of the freeze-dryer is changed from −40° C. to −15° C. over a period of 60 minutes at ambient pressure in the freeze-dryer; e) annealing the sample in a second annealing step, in which the temperature of the freeze-dryer is held at -15°C for 60 minutes at ambient pressure of the freeze-dryer; f) annealing the sample in a third annealing step, in which the temperature of the freeze-dryer is changed from −15° C. to −40° C. over a period of 60 minutes at ambient pressure in the freeze-dryer; g) annealing the sample in a fourth annealing step, wherein the temperature of the freeze-dryer is held at -40°C for about 60 minutes at ambient pressure of the freeze-dryer; h) drying the sample in a first primary drying step, wherein the freeze-dryer temperature is held at -40°C and the freeze-dryer pressure is held at 0.133 mBar for 10 minutes; i) drying the sample in a second primary drying step, where the freeze-dryer temperature is changed from -40°C to -25°C and the freeze-dryer pressure is held at 0.133mBar for 60 minutes; j) drying the sample in a third primary drying step, wherein the freeze-dryer temperature is held at -25°C and the freeze-dryer pressure is held at 0.133mBar for 2400 minutes; k) drying the sample in a fourth primary drying step, wherein the freeze-dryer temperature is changed from -25°C to 25°C and the freeze-dryer pressure is held at 0.133mBar for 840 minutes; l) drying the sample in a secondary drying step, wherein the freeze-dryer temperature is held at 25° C. and the freeze-dryer pressure is held at 0.133 mBar for 1390 minutes.

[0064] Embodiment 58 is a pharma- ceutically acceptable formulation reconstituted in an aqueous medium for intravenous injection, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; and 5 to 25 mM of at least one buffering agent.

[0065] Embodiment 59 is a stable lyophilisate according to embodiment 58, wherein the relative abundance (%) of oxidized species of Tagraxofusp does not increase to more than 2% or more than 1% over a period of 18 to 24 months.

[0066] Embodiment 60 is a reconstituted formulation for intravenous injection according to embodiment 58 or 59, wherein the lyophilized solution further comprises at least one bulking agent at 2-10% w / v.

[0067] Embodiment 61 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 60, comprising 0.5 to 1.5 mg / mL tagraxofusp, or 0.6 to 1.4 mg / mL tagraxofusp, or 0.7 to 1.3 mg / mL tagraxofusp, 0.8 to 1.2 mg / mL tagraxofusp, or 1 mg / mL tagraxofusp.

[0068] Embodiment 62 is a reconstituted formulation for intravenous injection according to embodiment 58 or 61, wherein the surfactant is present in an amount of 0.07-1.5% w / v, or 0.1-1.3% w / v, or 0.15-1.2% w / v, or 0.25-1.0% w / v, or 0.24-0.26% w / v.

[0069] Embodiment 63 is a reconstituted formulation for intravenous injection according to embodiment 58 or 62, wherein the surfactant is selected from polysorbates or poloxamers.

[0070] Embodiment 64 is a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 63, wherein the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80.

[0071] Embodiment 65 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 64, wherein the surfactant is polysorbate 80.

[0072] Embodiment 66 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 65, wherein the disaccharide sugar is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v.

[0073] Embodiment 67 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 66, wherein the disaccharide sugar is selected from trehalose, lactose, and sucrose.

[0074] Embodiment 68 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 67, wherein the disaccharide sugar is sucrose.

[0075] Embodiment 69 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 68, wherein the bulking agent is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v.

[0076] Embodiment 70 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 69, wherein the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol.

[0077] Embodiment 71 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 70, wherein the bulking agent is mannitol.

[0078] Embodiment 72 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 71, to which at least one buffering agent is added at 5 to 15 mM, or 7 to 12 mM, or 9 to 11 mM, or 10 mM.

[0079] Embodiment 73 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 72, wherein the buffer is selected from phosphate, arginine, histidine, and Tris HCl.

[0080] Embodiment 74 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 73, wherein the buffer is Tris HCl.

[0081] Embodiment 75 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 74, wherein the pH is 6.5 to 9.

[0082] Embodiment 76 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 75, wherein the pH is 7 to 8.

[0083] Embodiment 77 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 76, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl, It has a pH of 6.5 to 9.

[0084] Embodiment 78 is a reconstituted formulation of embodiment 77, wherein the reconstituted formulation further comprises 2-10% w / v mannitol.

[0085] Embodiment 79 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 78, 0.9 to 1.1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 9-11 mM Tris HCl, It has a pH of 6.5 to 9.

[0086] Embodiment 80 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 79, wherein the aqueous medium is water for injection (WFI).

[0087] Embodiment 81 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 80, which, when diluted in an infusion fluid bag, provides a fluid in the infusion fluid bag, the fluid being essentially free of particulate matter.

[0088] Embodiment 82 is a reconstituted formulation for intravenous injection described in embodiment 81, wherein the infusion bag is a 50cc infusion bag.

[0089] Embodiment 83 is a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 82, which when diluted in an infusion solution bag provides a fluid in the infusion solution bag, the fluid being essentially free of particulate matter, and further wherein the fluid in the infusion solution bag comprises saline or 5% (w / v) dextrose.

[0090] Embodiment 84 is a method for treating myeloproliferative neoplasms (MPN) with monocytosis, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0091] Embodiment 85 is a method for treating myeloproliferative neoplasms (MPN), comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection according to any one of embodiments 58 to 83, wherein the MPN is polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF), chronic myelomonocytic leukemia (CMML), chronic neutrophilic leukemia, chronic eosinophilic leukemia, systemic mastocytosis (SM), symptomatic hypereosinophilic disorder, or other bone marrow disease causing excess production of red blood cells, white blood cells, and / or platelets, or primary eosinophilic disorder (PED).

[0092] Embodiment 86 is a method for treating acute myeloid leukemia (AML), comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0093] Embodiment 87 is a method for treating chronic myelomonocytic leukemia (CMML), comprising administering to a subject in need of a reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 78.

[0094] Embodiment 88 is a method for treating myelodysplastic syndrome (MDS), comprising administering to a subject in need of a reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0095] Embodiment 89 is a method for treating multiple myeloma in a subject in need of treatment, comprising administering to a subject in need of the reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0096] Embodiment 90 is a method for treating blastic plasmacytoid dendritic cell neoplasm (BPDCN), comprising administering to a subject in need of the reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0097] Embodiment 91 is a method of treating an autoimmune disease, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0098]

[0081] Embodiment 92 is the method of embodiment 91, wherein the autoimmune disease is lupus (e.g., systemic lupus erythematosus, cutaneous lupus, discoid lupus), Sjogren's syndrome, inflammatory arthritis, systemic sclerosis (SSc), morphea, psoriasis, lichen planus, dermatomyositis, lichen sclerosus, and cutaneous graft-versus-host disease (GVHD), adrenergic drug resistance, alopecia areata, ankylosing spondylitis, antiphospholipid syndrome, autoimmune Addison's disease, autoimmune diseases of the adrenal gland, allergic encephalomyelitis, autoimmune hemolytic anemia, autoimmune hepatitis, and autoimmune inflammatory bowel disease. autoimmune inflammatory eye disease, autoimmune neonatal thrombocytopenia, autoimmune neutropenia, autoimmune oophoritis and orchitis, autoimmune thrombocytopenia, autoimmune thyroiditis, Behçet's disease, bullous pemphigoid, cardiomyopathy, open-heart syndrome, celiac sprue dermatitis, chronic active hepatitis, chronic fatigue immune deficiency syndrome (CFIDS), chronic inflammatory demyelinating polyneuropathy, Churg-Strauss syndrome, cicatricial pemphigoid, CREST syndrome, cold agglutinin disease, Crohn's disease, dense deposit disease, essential mixed Crohn's disease Oglobulinemia, fibromyalgia / fibromyositis, glomerulonephritis (e.g., IgA nephropathy), gluten-sensitive enteropathy, Goodpasture's syndrome, Graves' disease, Guillain-Barré, hyperthyroidism (Hashimoto's thyroiditis), idiopathic pulmonary fibrosis, idiopathic Addison's disease, idiopathic thrombocytopenic purpura (ITP), IgA neuropathy, juvenile arthritis, Meniere's disease, mixed connective tissue disease, multiple sclerosis, myasthenia gravis, myocarditis, type I or immune-mediated diabetes mellitus, neuritis, other endocrine glandular deficiencies, pemphigus vulgaris, pernicious anemia, polyarteriovenous purpura In one embodiment, the patient is selected from the group consisting of rheumatism, polychondritis, polyendocrinopathy, polyglandular syndrome, polymyalgia rheumatica, polymyositis, post-MI, primary agammaglobulinemia, primary biliary cirrhosis, psoriatic arthritis, Raynaud's phenomenon, relapsing polychondritis, Reiter's syndrome, rheumatic heart disease, rheumatoid arthritis, sarcoidosis, stiff man syndrome, Takayasu's arteritis, temporal arteritis-giant cell arteritis, ulcerative colitis, urticaria, uveitis, uveitis ophthalmia, vasculitis (e.g., dermatitis herpetiformis type vasculitis), vitiligo, and Wegener's granulomatosis.

[0099] Embodiment 93 is a method for treating or inhibiting a solid tumor, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 58 to 83.

[0100] Embodiment 94 is the method of embodiment 93, wherein the solid tumor is selected from a sarcoma, a carcinoma, and a lymphoma.

[0101] Embodiment 95 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 4 μg / kg to 20 μg / kg.

[0102] Embodiment 96 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 6 μg / kg to 16 μg / kg.

[0103] Embodiment 97 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 7 μg / kg.

[0104] Embodiment 98 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 9 μg / kg.

[0105] Embodiment 99 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 12 μg / kg.

[0106] Embodiment 100 is the method of any one of embodiments 84 to 94, wherein tagraxofusp is administered at a dose of 12 μg / kg over 15 minutes.

[0107] Embodiment 101 is the method of any one of embodiments 84 to 100, wherein tagraxofusp is administered at a dose that is the maximum tolerated dose.

[0108] Embodiment 102 is the method of any one of embodiments 84 to 101, wherein tagraxofusp is administered once daily for five days.

[0109] Embodiment 103 is the method of any one of embodiments 84 to 101, wherein tagraxofusp is administered once daily for three days.

[0110] Embodiment 104 is the method of any one of embodiments 84 to 103, wherein tagraxofusp is administered in multiple cycles.

[0111] Embodiment 105 is the method of any one of embodiments 84 to 102, wherein tagraxofusp is administered on days 1 to 5 of a 21-day cycle.

[0112] Embodiment 106 is the method of any one of embodiments 84 to 102, wherein tagraxofusp is administered on days 1 to 5 of a 28-day cycle.

[0113] Embodiment 107 is the method of any one of embodiments 84-101 and 103, wherein tagraxofusp is administered on days 1-3 of a 21-day cycle.

[0114] Embodiment 108 is the method of any one of embodiments 84 to 101, wherein tagraxofusp is administered for 5 days on any one of the first 10 days of a 21-day cycle.

[0115] Embodiment 109 is a stable pharma- ceutically acceptable lyophilized solution according to any one of embodiments 1 to 41 in a vial.

[0116] Embodiment 110 is a stable pharma- ceutically acceptable lyophilized solution according to embodiment 38 or 40 in a vial.

[0117] Embodiment 111 is a lyophilisate according to any one of embodiments 42 to 51 in a vial.

[0118] Embodiment 112 is a lyophilisate according to embodiment 49 or 50 in a vial.

[0119] Embodiment 113 is a lyophilisate according to embodiment 111 or 112 containing water.

[0120] Embodiment 114 is a vial containing a reconstituted solution according to any one of embodiments 58 to 80.

[0121] Embodiment 115 is a vial containing a reconstituted solution according to any one of embodiments 58, 60, 77, or 79.

[0122] Embodiment 116 is a solution, lyophilisate, or vial according to any one of embodiments 109 to 115, wherein the vial is a 2 mL or 3 mL vial.

[0123] Embodiment 117 is a stable solution for lyophilization in a pharma- ceutically acceptable aqueous carrier, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; At least one buffering agent at 5 to 25 mM; pH 6.5 to 9.0, The surfactant has 3% or less peroxide.

[0124] Embodiment 118 is a lyophilization solution according to embodiment 117, wherein the lyophilization solution further comprises at least one bulking agent at 2-10% w / v.

[0125] Embodiment 119 is a lyophilized solution according to embodiment 117 or 118, comprising 0.6 to 1.4 mg / mL tagraxofusp, or 0.7 to 1.3 mg / mL tagraxofusp, or 0.8 to 1.2 mg / mL tagraxofusp, or 1 mg / mL tagraxofusp.

[0126] Embodiment 120 is a lyophilized solution according to any one of embodiments 117 to 119, wherein the surfactant is present in an amount of 0.07 to 1.5% w / v, or 0.1 to 1.3% w / v, or 0.15 to 1.2% w / v, or 0.25 to 1% w / v, or 0.24 to 0.26% w / v.

[0127] Embodiment 121 is a lyophilized solution according to any one of embodiments 117 to 120, wherein the surfactant is selected from polysorbates or poloxamers, or the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80, or the surfactant is polysorbate 80.

[0128] Embodiment 122 is a lyophilized solution according to any one of embodiments 117 to 121, wherein the disaccharide sugar is present in an amount of 2 to 8% w / v, or 2 to 6% w / v, or 2 to 4% w / v, or 2 to 3% w / v, or 2.45 to 2.55% w / v.

[0129] Embodiment 123 is a lyophilized solution according to any one of embodiments 117 to 122, wherein the disaccharide sugar is selected from trehalose, lactose and sucrose, or the disaccharide sugar is sucrose.

[0130] Embodiment 124 is a lyophilized solution according to any one of embodiments 117 to 123, wherein the bulking agent is present in an amount of 2 to 8% w / v, or 2 to 6% w / v, or 2 to 4% w / v, or 2 to 3% w / v, or 2.45 to 2.55% w / v.

[0131] Embodiment 125 is a lyophilized solution according to any one of embodiments 117 to 124, wherein the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol, or the bulking agent is mannitol.

[0132] Embodiment 126 is a lyophilized solution according to any one of embodiments 117 to 125, wherein at least one buffering agent is at a concentration of 5 to 15 mM, or 7 to 12 mM, or 10 mM.

[0133] Embodiment 127 is a lyophilized solution according to any one of embodiments 117 to 126, wherein the buffer is selected from phosphate, arginine, histidine, and Tris HCl, or the buffer is Tris HCl.

[0134] Embodiment 128 is a lyophilized solution according to any one of embodiments 117 to 127, wherein the pH is 6.5 to 8, or the pH is 7 to 8.

[0135] Embodiment 129 is a stable pharma- ceutically acceptable lyophilized solution in a pharma-ceutically acceptable aqueous medium, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl, It has a pH of 6.5 to 9. Polysorbate 80 has less than 3% peroxide.

[0136] Embodiment 130 is a lyophilized solution according to embodiment 129, wherein the lyophilized solution further comprises 2-10% w / v mannitol.

[0137] Embodiment 131 is a lyophilized solution according to embodiment 130, 1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 9 to 11 mM Tris HCl; It has a pH of 6.5 to 9. Polysorbate 80 has less than 3% peroxide.

[0138] Embodiment 132 is a lyophilisate prepared from the lyophilisation solution according to any one of embodiments 117 to 131.

[0139] Embodiment 133 is a lyophilisate according to embodiment 132, (a) the relative abundance (%) of the oxidized species of tagraxofusp does not increase by more than 2% or more than 1% over a period of 12 to 36 months, or the relative abundance (%) of the oxidized species of tagraxofusp does not increase by more than 2% or more than 1% over a period of 18 to 24 months; (b) the relative abundance (%) of the acidic species of tagraxofusp does not increase over the relative abundance (%) of the same acidic species of tagraxofusp in a liquid tagraxofusp formulation during storage for 18, 24, or 36 months; (c) the formulation provides a required dose of 1 to 1.5 mg on a dry weight basis; (d) the lyophilized dry product is stable at a storage temperature of 2°C to 8°C for at least 24 months, or the lyophilized dry product is stable at a storage temperature of 2°C to 8°C for 24 months to 5 years, and / or (e) the oxidized impurity is 2% or less, or 1% or less, as determined by reversed-phase ultra-performance chromatography (RP-UPLC), and / or the oxidized impurity is measurable as a single peak at +16 Da from the tagraxofusp peak in mass spectrometry analysis, and / or the oxidized impurity elutes before the tagraxofusp peak in RP-UPLC analysis and the peak of the oxidized impurity on the RP-UPLC chromatogram is the closest peak to the tagraxofusp peak.

[0140] Embodiment 134 is a stable lyophilisate, 1 mg of tagraxofusp, 25 mg of at least one disaccharide sugar; 25 mg of at least one surfactant; 2.4 mg of at least one buffering agent; The lyophilisate has less than 2% oxidation impurities as determined by reversed phase ultra-performance chromatography (RP-UPLC) for at least 24 months.

[0141] Embodiment 135 is a stable lyophilizate of embodiment 134, (a) further comprising 25 mg of at least one bulking agent; (b) the relative abundance (%) of oxidized species of Tagraxofusp does not increase to more than 2% or more than 1% over a period of 18 to 24 months;

[0142] Embodiment 136 is a method for preparing a tagraxofusp lyophilisate, comprising the steps of: a) providing a lyophilized solution according to any one of embodiments 117 to 131; b) freeze-drying the solution to form a lyophilisate.

[0143] Embodiment 137 is the method according to embodiment 136, wherein the freeze-drying is carried out at a temperature between 40° C. and 25° C. for a period of 2 to 7 days; and / or The freeze-drying comprises a loading step, at least one freezing step, at least one annealing step and at least one drying step; and / or The freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps and at least one drying step; and / or The freeze-drying includes a loading step, at least two freezing steps, at least two annealing steps carried out over a period of one day or less, and at least one drying step carried out over a period of one to five days.

[0144] Embodiment 138 is the method according to embodiment 136 or 137, wherein the lyophilization comprises the following lyophilization cycle: a) loading a sample containing a freeze-drying solution into a freeze-dryer, the sample being pre-cooled by lowering the temperature of the freeze-dryer to 10° C. for 10 minutes at ambient freeze-dryer pressure; b) freezing the sample in a first freezing step, where the temperature of the freeze-dryer is changed from 10° C. to −40° C. over a period of 180 minutes at ambient pressure in the freeze-dryer; c) freezing the sample in a second freezing step, in which the temperature of the freeze-dryer is held at 40° C. for 60 minutes at ambient pressure of the freeze-dryer; d) annealing the sample in a first annealing step, in which the temperature of the freeze-dryer is changed from 40° C. to −15° C. over a period of 60 minutes at ambient pressure in the freeze-dryer; e) annealing the sample in a second annealing step, in which the temperature of the freeze-dryer is held at -15°C for 60 minutes at ambient pressure of the freeze-dryer; f) annealing the sample in a third annealing step, in which the temperature of the freeze-dryer is changed from 15° C. to −40° C. over a period of 60 minutes at ambient pressure in the freeze-dryer; g) annealing the sample in a fourth annealing step, wherein the temperature of the freeze-dryer is held at 40° C. for about 60 minutes at ambient pressure of the freeze-dryer; h) drying the sample in a first primary drying step, wherein the freeze-dryer temperature is held at 40° C. and the freeze-dryer pressure is held at 0.133 mBar for 10 minutes; i) drying the sample in a second primary drying step, where the freeze-dryer temperature is changed from 40° C. to −25° C. and the freeze-dryer pressure is held at 0.133 mBar for 60 minutes; j) drying the sample in a third primary drying step, wherein the freeze-dryer temperature is held at -25°C and the freeze-dryer pressure is held at 0.133mBar for 2400 minutes; k) drying the sample in a fourth primary drying step, wherein the freeze-dryer temperature is varied from 25° C. to 25° C. and the freeze-dryer pressure is held at 0.133 mBar for 840 minutes; l) drying the sample in a secondary drying step, wherein the freeze-dryer temperature is held at 25° C. and the freeze-dryer pressure is held at 0.133 mBar for 1390 minutes.

[0145] Embodiment 139 is a pharma- ceutically acceptable formulation reconstituted in an aqueous medium for intravenous injection, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; and 5 to 25 mM of at least one buffering agent.

[0146] Embodiment 140 is a reconstituted formulation for intravenous injection according to embodiment 139, (a) the relative abundance (%) of the oxidized species of Tagraxofusp did not increase by more than 2% or more than 1% over a period of 18 to 24 months; (b) the lyophilization solution further comprises at least one bulking agent at 2-10% w / v; (c) the formulation contains 0.5 to 1.5 mg / mL tagraxofusp, or 0.6 to 1.4 mg / mL tagraxofusp, or 0.7 to 1.3 mg / mL tagraxofusp, 0.8 to 1.2 mg / mL tagraxofusp, or 1 mg / mL tagraxofusp, (d) the surfactant is present in an amount of 0.07-1.5% w / v, or 0.1-1.3% w / v, or 0.15-1.2% w / v, or 0.25-1.0% w / v, or 0.24-0.26% w / v; (e) the surfactant is selected from polysorbates or poloxamers, or the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80, or the surfactant is polysorbate 80; (f) disaccharide sugars are present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v; (g) the disaccharide sugar is selected from trehalose, lactose, and sucrose, or the disaccharide sugar is sucrose; (h) the bulking agent is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v; (i) the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol, or the bulking agent is mannitol; (j) adding at least one buffering agent at a concentration of 5 to 15 mM, or 7 to 12 mM, or 9 to 11 mM, or 10 mM; (k) the buffer is selected from phosphate, arginine, histidine, and Tris HCl, or the buffer is Tris HCl; and / or (l) The pH is 6.5 to 9, or the pH is 7 to 8.

[0147] Embodiment 141 is a reconstituted formulation for intravenous injection according to embodiment 139 or 140, 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl; It has a pH of 6.5 to 9. The aqueous medium is water for injection (WFI).

[0148] Embodiment 142 is a reconstituted formulation of embodiment 141, wherein the reconstituted formulation further comprises 2-10% w / v mannitol.

[0149] Embodiment 143 is a reconstituted formulation for intravenous injection according to any one of embodiments 139 to 142, 0.9 to 1.1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; It contains 9-11 mM Tris HCl and has a pH of 6.5-9.

[0150] Embodiment 144 is a reconstituted formulation for intravenous injection according to any one of embodiments 139 to 143, which, when diluted in an infusion bag, provides a fluid in the infusion bag, the fluid being essentially free of particulate matter.

[0151] Embodiment 145 is a method for treating a disease, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection according to any one of embodiments 139 to 144, wherein the disease is a) Myeloproliferative neoplasms (MPN) with monocytosis, b) Myeloproliferative neoplasms (MPNs), which are polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF), chronic myelomonocytic leukemia (CMML), chronic neutrophilic leukemia, chronic eosinophilic leukemia, systemic mastocytosis (SM), symptomatic eosinophilic disorders, or other bone marrow diseases that cause excess production of red blood cells, white blood cells, and / or platelets, or primary eosinophilic disorders (PEDs); c) acute myeloid leukemia (AML), d) chronic myelomonocytic leukemia (CMML), e) myelodysplastic syndromes (MDS), f) multiple myeloma, g) blastic plasmacytoid dendritic cell neoplasm (BPDCN), h) autoimmune diseases; i) Autoimmune diseases, including but not limited to lupus (e.g., systemic lupus erythematosus, cutaneous lupus, discoid lupus), Sjogren's syndrome, inflammatory arthritis, systemic sclerosis (SSc), morphea, psoriasis, lichen planus, dermatomyositis, lichen sclerosus, and cutaneous graft-versus-host disease (GVHD), adrenergic drug resistance, alopecia areata, ankylosing spondylitis, antiphospholipid syndrome, autoimmune Addison's disease, autoimmune diseases of the adrenal gland, allergic encephalomyelitis, autoimmune hemolytic anemia, autoimmune hepatitis, autoimmune inflammatory eye diseases, and autoimmune inflammatory disorders of the adrenal gland. Diseases, Autoimmune Neonatal Thrombocytopenia, Autoimmune Neutropenia, Autoimmune Oophoritis and Orchitis, Autoimmune Thrombocytopenia, Autoimmune Thyroiditis, Behçet's Disease, Bullous Pemphigoid, Cardiomyopathy, Open Heart Syndrome, Celiac Sprue Dermatitis, Chronic Active Hepatitis, Chronic Fatigue Immune Deficiency Syndrome (CFIDS), Chronic Inflammatory Demyelinating Polyneuropathy, Churg-Strauss Syndrome, Cicatricial Pemphigoid, CREST Syndrome, Cold Agglutinin Disease, Crohn's Disease, Dense Deposit Disease, Essential Mixed Cryoglobulinemia, Fibroblastic Myelopathy, Myalgia / fibromyositis, glomerulonephritis (e.g. IgA nephropathy), gluten-sensitive enteropathy, Goodpasture's syndrome, Graves' disease, Guillain-Barré, hyperthyroidism (Hashimoto's thyroiditis), idiopathic pulmonary fibrosis, idiopathic Addison's disease, idiopathic thrombocytopenic purpura (ITP), IgA neuropathy, juvenile arthritis, Meniere's disease, mixed connective tissue disease, multiple sclerosis, myasthenia gravis, myocarditis, type I or immune-mediated diabetes mellitus, neuritis, other endocrine glandular deficiencies, pemphigus vulgaris, pernicious anemia, polyarteritis nodosa, polychondritis, polyglandular malformations, and an autoimmune disease selected from: chronic endocrinopathy, polyglandular syndromes, polymyalgia rheumatica, polymyositis, post-MI, primary agammaglobulinemia, primary biliary cirrhosis, psoriatic arthritis, Raynaud's phenomenon, relapsing polychondritis, Reiter's syndrome, rheumatic heart disease, rheumatoid arthritis, sarcoidosis, stiff-man syndrome, Takayasu's arteritis, temporal arteritis-giant cell arteritis, ulcerative colitis, urticaria, uveitis, uveitis ophthalmia, vasculitis (e.g., dermatitis herpetiformis type vasculitis), vitiligo, and Wegener's granulomatosis.

[0152] Embodiment 146 is a method for treating or inhibiting a solid tumor, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection described in any one of embodiments 139-144, optionally wherein the solid tumor is selected from a sarcoma, a carcinoma, and a lymphoma.

[0153] Embodiment 147 is a stable pharma- ceutically acceptable lyophilized solution according to any one of embodiments 117 to 131 in a vial.

[0154] Embodiment 148 is a lyophilisate according to any one of embodiments 132 to 135 in a vial.

[0155] Embodiment 149 is a vial containing a reconstituted solution according to any one of embodiments 139 to 144.

[0156] Embodiment 150 is a solution, lyophilisate, or vial according to any one of embodiments 147 to 149, wherein the vial is a 2 mL or 3 mL vial. [Brief description of the drawings]

[0157] [Figure 1A] 1 provides DSC data from the evaluation of stabilizing excipients detailed in Example 2.

[0158] [Figure 1B] 1 provides DSC data from the evaluation of stabilizing excipients detailed in Example 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0159] I. Definition As used herein, the terms "administer" and "administered" refer to the delivery of a composition to a subject by a method or route that results in at least partial localization of the composition at a desired site. The composition may be administered by any suitable route that results in effective treatment in the subject, i.e., administration results in delivery to a desired location in the subject, and at least a portion of the composition is delivered to the desired site for a period of time. Modes of administration include injection, infusion, infusion, or ingestion. "Injection" includes, but is not limited to, intravenous, intramuscular, intraarterial, intrathecal, intraventricular, intracapsular, intraorbital, intracardiac, intradermal, intraperitoneal, transtracheal, subcutaneous, subcuticular, intraarticular, subcapsular, subarachnoid, intraspinal, intracerebrospinal, and intrasternal injection and infusion. In some examples, the route is intravenous.

[0160] As used herein, the term "agent" refers to any molecule, compound, and / or substance for use in the prevention, treatment, management and / or diagnosis of disease, including tagraxofusp as disclosed herein.

[0161] As used herein, the term "buffer" or "buffering agent" refers to one or more components that, when added to an aqueous solution, when an acid or alkali is added, or when diluted with a solvent, can protect the solution from pH fluctuations. In addition to phosphate buffers, glycine buffers, carbonate buffers, citrate buffers, etc. can be used, in which sodium, potassium, or ammonium ions can function as counterions.

[0162] As used herein, the term "bulking agent" refers to one or more components that form the majority of the lyophilized product and provide the cake with the appropriate structure. They are generally used for low dose (high potency) drugs that do not have the bulk necessary to support their own structure.

[0163] As used herein, the term "carrier" refers to a diluent, adjuvant, or excipient with which the compositions disclosed herein are administered. In some embodiments, the carrier is sterile. Water can be a carrier. Saline solutions and aqueous dextrose and glycerol solutions can also be used as liquid carriers.

[0164] As used herein, the term "charge variant profile" refers to the relative amounts of various species of a protein that differ in net charge. Proteins are large molecules that contain numerous chemical entities that are subject to various post-translational enzymatic and chemical modifications that can change the overall charge of the molecule. In addition, chemical modifications such as oxidation or deamination can occur during the manufacturing process and storage. The charge state can affect the structure, stability, binding affinity, efficacy, and safety of a biotherapeutic. Analysis of charge variants is usually a regulatory requirement for biotherapeutic proteins and can be accomplished using isoelectric focusing or ion exchange chromatography. Changes in the relative amounts of various charge variants due to process inconsistencies and / or stability-related events can adversely affect the safety and efficacy of a biotherapeutic protein.

[0165] As used herein, the term "excipient" refers to a substance used to formulate a therapeutic agent into a pharmaceutical preparation and can be any solid, liquid, or semi-solid additive such as diluents, solubilizers, stabilizers, adjuvants, thickeners, lubricants, bulking agents, buffers, enhancers, antibacterial agents, wetting agents, and surfactants.

[0166] The term "effective amount" or "sufficient amount" as used herein refers to an amount of a therapeutic composition or therapy sufficient to cause prevention of the onset, recurrence, or onset of a disease or disorder and one or more symptoms thereof, reduce the severity or duration of a disease or disorder, alleviate one or more symptoms of a disease or disorder, prevent the progression of a disease or disorder, cause regression of a disease or disorder, and / or enhance or improve the therapeutic effect of another therapy. In embodiments, an "effective amount" or "therapeutically effective amount" refers to an amount of a composition sufficient to cause a beneficial or desired outcome. A therapeutically effective amount may vary depending on one or more of the subject and disease condition being treated, the weight and age of the subject, the severity of the disease condition, the method of administration, and the like, which can be readily determined by one of skill in the art. In certain embodiments, a "sufficient amount" of a therapeutic composition refers to the amount of the composition necessary to prevent, reduce, or alleviate at least one or more signs or symptoms of a disease. Thus, the term "effective amount" refers to an amount of a composition that is sufficient to promote a particular effect when administered to a typical subject (such as a subject having or at risk for cancer or, for example, an autoimmune disease). An effective amount would also include an amount sufficient to delay the onset of, alter the course of, or reverse a disease symptom (such as, but not limited to, slowing the progression of a disease symptom). It will be understood that for any given case, an appropriate "effective amount" may be determined by one of ordinary skill in the art using routine experimentation.

[0167] As used herein, the term "isotonic" refers to a formulation that has essentially the same osmotic pressure as human blood. Isotonic formulations generally have an osmotic pressure of 250-350 mOsmol / KgH2O. Isotonicity can be measured, for example, using a vapor pressure or ice osmometer.

[0168] As used herein, the terms "lyophilization" and "lyophilized" refer to a process in which the material to be dried is first frozen and then the ice or frozen solvent is removed by sublimation in a vacuum environment.

[0169] As used herein, the term "lyophilized solution" refers to a formulation that undergoes the lyophilization process.

[0170] As used herein, the term "lyophile" refers to any solid material obtained by lyophilization of a lyophilization solution (i.e., freeze-drying of an aqueous solution).

[0171] As used herein, the term "lyoprotectant" refers to a molecule that, when combined with a protein of interest, prevents or reduces chemical and / or physical instability of the protein before or during lyophilization or freeze-drying, and during subsequent storage. Lyoprotection is defined as the stabilization of a therapeutic agent and prevention of its degradation both during and after lyophilization.

[0172] As used herein, in the context of administering a therapy to a subject, the terms "manage," "managing," and "management" do not result in a cure of the disease or disorder, but refer to the beneficial effects that a subject derives from a therapy (e.g., a prophylactic or therapeutic composition) or combination of therapies. In certain embodiments, a subject is administered one or more therapies (e.g., one or more prophylactic or therapeutic compositions) to "manage" a disease, to prevent the progression or worsening of the condition.

[0173] As used herein, the term "peroxide" or "peroxides" refers to any of a class of chemical compounds in which two oxygen atoms are linked together by a single covalent bond. Organic peroxides are compounds with the bonds COOC or COOH. An example is tert-butyl hydroperoxide. Peroxides are known to readily decompose into highly reactive free radical-containing moieties (CO· or HO·) that can cause further degradation or destabilization of pharmaceutical formulations.

[0174] As used herein, the term "pharmacologically acceptable" refers to compounds, materials, compositions, formulations, and / or dosage forms that are suitable for use in contact with the tissues of a subject, human, or animal without undue toxicity, irritation, allergic response, or other problem or complication, within the scope of sound medical judgment, commensurate with a reasonable benefit / risk ratio.

[0175] As used herein, in the context of administration of a therapy to a subject, the terms "prevent", "preventing", and "prevention" refer to the prevention or inhibition of recurrence, onset, and / or development of a disease or disorder or a symptom thereof in a subject resulting from administration of a therapy (e.g., a prophylactic or therapeutic agent) or combination of therapies (e.g., a combination of prophylactic or therapeutic agents). In certain embodiments, such terms refer to one, two, three, or more of the following outcomes following administration of one or more therapies: (1) delaying the onset of disease symptoms, (2) altering the course of disease symptoms (e.g., but not limited to, delaying the progression of disease symptoms), (3) reversing disease symptoms, (4) reducing the rate of disease recurrence, (5) extending the time to disease recurrence, (6) increasing the disease-free, recurrence-free, progression-free, and / or overall survival of a patient, and (7) improving disease-related symptoms and / or quality of life. In certain embodiments, such terms refer to a reduction in mortality and / or an increase in survival rate of a patient population. In further embodiments, such terms refer to an increase or improvement in the quality of life of a patient population. In certain embodiments, such terms refer to a reduction in the rate of hospitalization of a patient population and / or a reduction in the length of hospitalization of a patient population.

[0176] As used herein, the term "reconstituted" or "reconstituted formulation" refers to a formulation prepared by dissolving a lyophilisate in an aqueous carrier. In some embodiments, the reconstituted formulation is suitable for intravenous injection (IV) in a patient in need thereof.

[0177] As used herein, the term "stable" refers to a formulation or composition in which the therapeutic agent contained therein essentially retains its physical and chemical stability and integrity during processing and storage. The stability of a formulation can be measured at a selected temperature after a selected period of time. For example, the increase in particles, the formation of aggregates, or the presence of other impurities after lyophilization and storage are indicators of instability of a lyophilized formulation. In addition to the formation of aggregates, the retention of original clarity, color, and odor throughout the shelf life are indicators that can be used to monitor a stable solution.

[0178] As used herein, the terms "subject" and "patient" are used interchangeably and refer to a human subject, although it is to be understood that the methods described herein are effective with respect to all vertebrate species intended to be encompassed by the term "subject." Thus, a "subject" can include a human subject for medical purposes, such as for the treatment of an existing condition or disease, or prophylactic treatment to prevent the onset of a condition or disease, or an animal subject for medical, veterinary, or development purposes. Suitable animal subjects include mammals, including but not limited to primates, humans, monkeys, apes, etc., bovine (e.g., cattle, bulls, etc.), ovine (e.g., sheep, etc.), caprine (e.g., goat, etc.), porcine (e.g., pig, boar, etc.), equine (e.g., horse, donkey, zebra, etc.), feline (including wild and domestic cats), canine (including dog), lagomorph (including rabbit, hare, etc.), and rodents (including mouse, rat, etc.). The animal may be a transgenic animal. In certain embodiments, the subject is a human (e.g., an infant, juvenile, or adult). Furthermore, a "subject" can include a patient suffering from or suspected of suffering from a condition or disease.

[0179] As used herein, the term "surfactant" refers to a surface-active molecule that contains both a hydrophobic portion (e.g., an alkyl chain) and a hydrophilic portion (e.g., a carboxyl group and a carboxylic acid group). Surfactants can be added to the formulations disclosed herein. Surfactants suitable for use in the formulations herein include polysorbates (e.g., polysorbate 20, 60, or 80), poloxamers (e.g., poloxamer 144, 168, or 188), sorbitan esters and derivatives, Triton sodium lauryl sulfate, sodium octyl glycoside, lauryl-, myristyl-, linoleyl-, or stearyl-sulfobetamine, lauryl-, myristyl-, linoleyl-, or stearyl-sarcosine, linole ... Examples of suitable oleyl taurate copolymers include, but are not limited to, oleyl taurate copolymers such as oleyl taurate copolymers, ...

[0180] As used herein, the terms "therapies" and "therapy" can refer to any method, composition, and / or agent that can be used in the prevention, treatment, and / or management of a disease, disorder, or condition, or one or more symptoms thereof. In certain embodiments, the terms "therapies" and "therapy" refer to steroid therapy, physical therapy, gene therapy, chemotherapy, small molecule therapy, radioimmunotherapy, toxin therapy, prodrug-activated enzyme therapy, biological therapy, antibody therapy, surgical therapy, hormonal therapy, immunotherapy, antiangiogenic therapy, targeted therapy, epigenetic therapy, demethylation therapy, histone deacetylase inhibitor therapy, differentiation therapy, radiation therapy, or combinations of the aforementioned therapies, and / or other therapies useful in the prevention, management, and / or treatment of a disease, disorder, or condition, or one or more symptoms thereof.

[0181] As used herein, in the context of administration of a therapeutic composition to a subject, the terms "treat," "treatment," and "treating" refer to the reversal, reduction, or inhibition of disease progression and / or duration, prevention or reduction in the likelihood of disease, reduction or amelioration of severity, and / or amelioration of one or more symptoms of the disease, disorder, or condition to which such terms apply, resulting from the administration of one or more therapies.

[0182] II. Improved Formulations ELZONRIS® is a CD123-directed cytotoxin currently approved for use in the United States for the treatment of blastic plasmacytoid dendritic cell neoplasms (BPDCN) in adult and pediatric patients aged 2 years and older. ELZONRIS® is a commercial formulation of the therapeutic agent tagraxofusp (sold in the United States under the generic name tagraxofusp-erzs). Tagraxofusp is a diphtheria toxin-IL-3 fusion protein that targets the IL-3 receptor and can be found in DrugBank using the accession number DB14731 and is described in U.S. Patent Nos. 7,763,242, 8,470,307, 9,181,317, 9,631,006, and 10,259,853.

[0183] Embodiments disclosed herein provide a stable pharma- ceutically acceptable lyophilized solution comprising 0.5-1.5 mg / mL tagraxofusp. In other embodiments, the lyophilized solution comprises 0.6-1.4 mg / mL tagraxofusp. In other embodiments, the lyophilized solution comprises 0.7-1.3 mg / mL tagraxofusp. In other embodiments, the lyophilized solution comprises 0.8-1.2 mg / mL tagraxofusp. In other embodiments, the lyophilized solution comprises 0.9-1.1 mg / mL tagraxofusp. In other embodiments, the lyophilized solution comprises 1 mg / mL tagraxofusp. Embodiments disclosed herein provide a stable pharma-ceutically acceptable lyophilized solution comprising 1 mg / vial tagraxofusp. In other embodiments, the lyophilized solution comprises 1.5 mg / vial tagraxofusp.

[0184] The embodiments disclosed herein provide a stable pharma- ceutically acceptable lyophilized solution containing low levels of charge variants over its shelf life compared to non-lyophilized formulations according to the formulations and methods described herein. In some embodiments, the charge variant profile may be determined or approximated based on the amount of acidic species impurity measured. In some embodiments, the relative abundance (%) of the acidic species impurity will increase during storage of the tagraxofusp drug product. In some embodiments, the reported relative abundance (%) of the acidic species impurity will increase by 3-8 percentage points in a liquid product formulation of tagraxofusp, while the relative abundance (%) of the same acidic species impurity will increase by 0-2, or 0-1, or 0-0.5 percentage points in a lyophile drug product formulation described herein. In some embodiments, the drug product is stored for 12, 18, 24, or 36 months. In some embodiments, the drug product is stored for 24 months. In some embodiments, the relative abundance (%) of acidic species of tagraxofusp in a lyophilisate described herein will not increase over the relative abundance (%) of the same acidic species of tagraxofusp in a liquid tagraxofusp formulation during 18, 24, or 36 months of storage.

[0185] Without wishing to be bound by theory, it is believed that judicious selection of the surfactant type and purity used in the preparation of the lyophilized solution can prevent the formation of particulates and / or impurities during manufacturing, storage throughout the shelf life, and during the process of reconstitution and administration to a patient.

[0186] In some embodiments, the lyophilization solution comprises tagraxofusp, at least one disaccharide sugar, at least one surfactant having 3% or less peroxide, and at least one buffering agent. In some embodiments, the lyophilization solution further comprises at least one bulking agent.

[0187] In some embodiments, in the lyophilization solutions disclosed herein, the disaccharide sugar is present in an amount of 2-10% w / v of the lyophilization solution. In other embodiments, the disaccharide sugar is present in an amount of 2-8% w / v. In other embodiments, the disaccharide sugar is present in an amount of 2-6% w / v. In other embodiments, the disaccharide sugar is present in an amount of 2-4% w / v. In other embodiments, the disaccharide sugar is present in an amount of 2-3% w / v. In other embodiments, the disaccharide sugar is present in an amount of 2.45-2.55% w / v. In some embodiments, the disaccharide sugar is selected from trehalose, lactose, and sucrose. In other embodiments, the disaccharide sugar is sucrose.

[0188] In some embodiments, the lyophilization solutions disclosed herein include a surfactant. In some embodiments, the surfactant is present in an amount of 0.05-1.5% w / v of the lyophilization solution. In other embodiments, the surfactant is present in an amount of 0.07-1.5% w / v. In other embodiments, the surfactant is present in an amount of 0.1-1.3% w / v. In other embodiments, the surfactant is present in an amount of 0.15-1.2% w / v. In other embodiments, the surfactant is present in an amount of 0.25-1.0% w / v. In other embodiments, the surfactant is present in an amount of 0.24-0.26% w / v. In some embodiments, the surfactant is selected from polysorbates and poloxamers. In other embodiments, the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80. In other embodiments, the surfactant is polysorbate 80.

[0189] The lyophilized solutions disclosed herein are prepared from commercially available ultra-purified or super-refined surfactants. The ultra-purification process is a process that removes impurities (including primary and secondary oxidation products) from excipients without altering their chemical composition, helping to reduce interactions and degradation of the API.

[0190] In some embodiments, the surfactant has 3%, or 2.5%, or 2%, or 1.5%, or 1% or less peroxide. The peroxide content is assessed using potentiometric titration according to the European Pharmacopoeia (EP) 2.5.5 peroxide value when the container is first opened after receipt from the manufacturer. To prevent peroxide formation, in some embodiments, the surfactant is used within 6 months from this test date and / or if testing by the manufacturer is not completed but a surfactant with low peroxide is obtained, it is used within 6 months of receipt. In some embodiments, the manufacturer can use the container only for one manufacturing procedure, rather than using it partially and then storing it for use in the preparation of additional lyophilized formulations at a later date.

[0191] In some embodiments, the lyophilization solutions disclosed herein include at least one buffering agent. In some embodiments, the buffering agent is selected from phosphate, arginine, histidine, and Tris HCl. In other embodiments, the buffering agent is Tris HCl. In some embodiments, 5-25 mM of at least one buffering agent is added. In other embodiments, 5-15 mM of at least one buffering agent is added. In other embodiments, 7-12 mM of at least one buffering agent is added. In other embodiments, 9-11 mM of at least one buffering agent is added. In other embodiments, 10 mM of at least one buffering agent is added.

[0192] In some embodiments, the lyophilization solutions disclosed herein further comprise at least one bulking agent at 2-10% w / v. In other embodiments, the bulking agent is present in an amount of 2-8% w / v. In other embodiments, the bulking agent is present in an amount of 2-6% w / v. In other embodiments, the bulking agent is present in an amount of 2-4% w / v. In other embodiments, the bulking agent is present in an amount of 2-3% w / v. In other embodiments, the bulking agent is present in an amount of 2.45-2.55% w / v. In some embodiments, the bulking agent is at least one disaccharide sugar. In some embodiments, the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol. In some embodiments, the bulking agent is mannitol.

[0193] The lyophilization solutions disclosed herein are prepared to have a pH of 6.5 to 9. In other embodiments, the pH is 7 to 8.

[0194] Embodiments disclosed herein provide a stable pharma- ceutically acceptable lyophilized solution in a pharma-ceutically acceptable aqueous carrier, comprising 0.5-1.5 mg / mL tagraxofusp, 2-10% w / v of at least one disaccharide sugar, 0.05-1.5% w / v of at least one surfactant, and 5-25 mM of at least one buffering agent, wherein the surfactant has 3% or less peroxide. In other embodiments, the lyophilized solution disclosed herein further comprises 2-10% w / v of at least one bulking agent.

[0195] In some embodiments, the disclosure provides a stable pharma- ceutically acceptable lyophilized solution in a pharma- ceutically acceptable aqueous carrier, comprising 0.5-1.5 mg / mL tagraxofusp, 2-10% w / v sucrose, 0.05-1.5% w / v polysorbate 80, and 5-25 mM tris HCl, having a pH of 6.5-9, and the polysorbate 80 having 3% or less peroxide. In other embodiments, the pharma-ceutically acceptable lyophilized solution further comprises 2-10% w / v mannitol.

[0196] In some embodiments, the disclosure provides a stable pharma- ceutically acceptable lyophilized solution in a pharma-ceutically acceptable aqueous carrier comprising 0.9-1.1 mg / mL tagraxofusp, 2.45-2.55 w / v sucrose, 2.45-2.55 w / v mannitol, 0.24-0.26 w / v polysorbate 80, and 9-11 mM Tris HCl, having a pH of 6.5-9, and the polysorbate 80 having no more than 3% peroxide.

[0197] In some embodiments, the present disclosure provides lyophilizates prepared from various pharmaceutical compositions described herein. In some embodiments, the lyophilizate formulations provide a requisite dose of 1-1.5 mg on a dry weight basis.

[0198] In some embodiments, the lyophilized dry product is stable for at least 24 months at a storage temperature of 2° C. to 8° C. In some embodiments, the lyophilized dry product is stable for 24 months to 5 years at a storage temperature of 2° C. to 8° C.

[0199] In some embodiments, the disclosure provides a method of preparing a tagraxofusp lyophilisate, comprising the steps of a) providing a lyophilisation solution as disclosed throughout, and b) lyophilising the solution to form a lyophilisate.

[0200] In some embodiments, the lyophilization cycle includes a freezing step, an annealing step, a primary drying step, and a secondary drying step.

[0201] In some embodiments, the lyophilization cycle is carried out at a temperature between -40°C and 25°C.

[0202] In some embodiments, the lyophilization cycle is carried out over a period of 3-4 days.

[0203] In some embodiments, the lyophilization comprises a loading step, at least one freezing step, at least one annealing step, and at least one drying step.

[0204] In some embodiments, the lyophilization comprises a loading step, at least two freezing steps, at least two annealing steps, and at least one drying step.

[0205] In some embodiments, the freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps carried out over a period of one day or less, and at least one drying step carried out over a period of one to five days.

[0206] In some embodiments, lyophilization comprises the following method: i. The product-filled vials are semi-stoppered with elastomeric closures and loaded onto shelves of a lyophilization chamber maintained at 10° C. for pre-cooling; ii. in a step designated as heat treatment or annealing, the shelf temperature is ramped from 10° C. to −40° C. in 3 hours, held at −40° C. for 1 hour, ramped to −10° C. in 1 hour, held at −10° C. for 1 hour, ramped back to −40° C. in 1 hour, and held at −40° C. for an additional 1 hour; iii. After the above steps, cool the condenser to below -60°C and prime the vacuum pump; iv. The chamber pressure is then reduced to 0.133 mBar to initiate sublimation of the ice, also known as the primary drying step; v. In the primary drying step, the shelf temperature is increased from -40°C to -25°C in 1 hour and maintained at this temperature for 40 hours, then the shelf temperature is increased to +25°C in 14 hours; vi. This is followed by maintaining the shelf temperature for an additional 23.3 hours in the secondary drying stage to complete the drying cycle; vii. The chamber is evacuated to 900 mBar atmosphere with nitrogen and the vial is then completely stoppered under nitrogen and removed from the chamber.

[0207] In some embodiments, the disclosure provides a method of reconstituting a lyophilisate, the method comprising adding the lyophilisate to a sterile vial, adding a first aqueous medium to the vial to create a reconstituted lyophilisate, and further diluting the reconstituted lyophilisate with a second aqueous medium to a dosage appropriate for administration to a patient.

[0208] In some embodiments of the method for reconstituting a lyophilisate, the first aqueous medium is water, saline, or 5% dextrose in water. In some embodiments of the method for reconstituting a lyophilisate, the first aqueous medium is water. In some embodiments of the method for reconstituting a lyophilisate, the second aqueous medium is water, saline, or 5% dextrose in water. In some embodiments of the method for reconstituting a lyophilisate, the second aqueous medium is water.

[0209] Some embodiments of the method of reconstituting a lyophilisate include adding 1.0 to 1.5 mL of the first aqueous medium.

[0210] In some embodiments, the disclosure provides a pharma- ceutically acceptable formulation reconstituted in an aqueous medium for intravenous injection, comprising 0.5-1.5 mg / mL tagraxofusp, 2-10% w / v of at least one disaccharide sugar, 0.05-1.5% w / v of at least one surfactant, and 5-25 mM buffer.

[0211] In some embodiments, the reconstituted formulation for intravenous injection further comprises 2-10% w / v of at least one bulking agent. In some embodiments of the reconstituted formulation for intravenous injection, the surfactant is selected from polysorbates and poloxamers. In other embodiments, the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80. In some embodiments, the surfactant is polysorbate 80.

[0212] In some embodiments of the reconstituted formulation for intravenous injection, the disaccharide sugar is selected from trehalose, lactose, and sucrose. In some embodiments, the disaccharide sugar is sucrose.

[0213] In some embodiments of the reconstituted formulation for intravenous injection, the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol, hi some embodiments, the bulking agent is mannitol.

[0214] In some embodiments of the reconstituted formulation for intravenous injection, the buffering agent is selected from phosphate, arginine, histidine, and tris HCl. In some embodiments, the buffering agent is tris HCl.

[0215] In some embodiments of the reconstituted formulation for intravenous injection, the pH is 6.5 to 9. In some embodiments, the pH is 7 to 8. In some embodiments, the pH is 7.5.

[0216] In some embodiments of the reconstituted formulation for intravenous injection, the aqueous medium is water for injection (WFI).

[0217] In some embodiments of the reconstituted formulation for intravenous injection, upon dilution into the infusion solution bag, the reconstituted formulation in the infusion solution bag is essentially free of particulate matter.

[0218] In some embodiments of the reconstituted formulation for intravenous injection, when diluted in the infusion fluid bag, the reconstituted formulation in the infusion fluid bag is essentially free of particulate matter, and the fluid in the infusion fluid bag further comprises saline or 5% (w / v) dextrose.

[0219] In some embodiments, provided herein is a vial containing a stable pharma- ceutically acceptable lyophilized solution as disclosed herein. In other embodiments, provided herein is a vial containing a stable lyophilized product as disclosed herein. In other embodiments, provided herein is a vial containing a reconstituted solution containing a reconstituted lyophilized product as disclosed herein. In some embodiments, the vial is a 2 mL vial or a 3 mL vial.

[0220] III. Impurities Although several trace impurities are present in tagraxofusp or tagraxofusp formulations, one impurity is associated with a single oxidation of the drug. By mass spectrometry, the intact mass of the oxidized impurity is presented as a single peak at +16 Da from tagraxofusp. Although the impurity is a single peak, peptide mapping shows that it represents several species, each with a single oxidation at one of several sites on tagraxofusp. In forced degradation studies of tagraxofusp using peroxide treatment, the amount of oxidized species of tagraxofusp increases. The oxidized impurity can be separated from tagraxofusp and other impurities using reversed-phase ultra-performance chromatography (RP-UPLC), for example, using the method disclosed in Example 2. In RP-UPLC, the oxidized impurity elutes before tagraxofusp elutes. The oxidized impurity peak on the RP-UPLC chromatogram is the closest prominent impurity peak to the tagraxofusp peak.

[0221] Without wishing to be bound by any particular theory, it is believed that the peroxide levels in commercially available surfactants contribute to the amount of oxidation impurities found in tagraxofusp or tagraxofusp formulations.

[0222] In some embodiments, the disclosure provides a lyophilisate having 2% or less oxidized species of tagraxofusp as determined by reversed phase ultra-performance chromatography (RP-UPLC), or 1% or less. In other embodiments, the oxidized species of tagraxofusp is 2% or less for at least 24 months as determined by reversed phase ultra-performance chromatography (RP-UPLC). In other embodiments, the oxidized species of tagraxofusp is 2% or less for at least 12, 18, 24, or 36 months as determined by reversed phase ultra-performance chromatography (RP-UPLC). In other embodiments, the oxidized species of tagraxofusp is 2% or less for at least 12, 18, 24, or 36 months as determined by reversed phase ultra-performance chromatography (RP-UPLC).

[0223] In some embodiments, the relative abundance (%) of the oxidized species of Tagraxofusp in the lyophilisate does not increase to more than 2% or more than 1% over a period of 12-36 months or over a period of 18-24 months.

[0224] In some embodiments, the relative abundance (%) of the oxidized species of tagraxofusp in the lyophilisate will change less than the relative abundance (%) of the oxidized species of tagraxofusp in the liquid pharmaceutical formulation over a period of 18, 24, or 36 months.

[0225] In some embodiments, the disclosure provides a stable lyophilizate comprising 1.0 mg tagraxofusp, 25 mg of at least one disaccharide sugar, 2.5 mg of at least one surfactant, and 2.4 mg of at least one buffering agent, wherein the lyophilizate has less than or equal to 0.03 mg, or less than or equal to 0.02 mg, or less than or equal to 0.01 mg of oxidation impurities for at least 24 months as determined by reversed-phase ultra-performance chromatography (RP-UPLC). In some embodiments, the lyophilizate further comprises 25 mg of at least one bulking agent.

[0226] IV. Treatment method In some embodiments, the disclosure provides a method for treating blastic plasmacytoid dendritic cell neoplasm (BPDCN), comprising administering to a subject in need of the reconstituted formulation an effective amount of the reconstituted formulation for intravenous injection.

[0227] In some embodiments, the disclosure provides a method for treating or inhibiting myeloproliferative neoplasms (MPNs), comprising administering to a subject in need of the reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection. In some embodiments, the disclosure provides a method for inhibiting or treating myeloproliferative neoplasms associated with or developing monocytosis, comprising administering to a subject in need of the reconstituted formulation an effective amount of a reconstituted formulation for intravenous injection. In some embodiments, the MPNs are polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF), chronic myelomonocytic leukemia (CMML), chronic neutrophilic leukemia, chronic eosinophilic leukemia, systemic mastocytosis (SM), symptomatic eosinophilic disorder, or other bone marrow diseases (which cause excess production of red blood cells, white blood cells, and / or platelets), or primary eosinophilic disorder (PED).

[0228] In some embodiments, the disclosure provides a method for treating or inhibiting acute myeloid leukemia (AML), comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection.

[0229] In some embodiments, the disclosure provides a method for treating or inhibiting chronic myelomonocytic leukemia (CMML), comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection.

[0230] In some embodiments, the disclosure provides a method for treating or inhibiting myelodysplastic syndrome (MDS), comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection.

[0231] In some embodiments, the disclosure provides a method for treating or inhibiting multiple myeloma in a subject in need thereof, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection.

[0232] In some embodiments, the disclosure provides a method of treating an autoimmune disease, comprising administering to a subject in need of the reconstituted formulation an effective amount of the reconstituted formulation for intravenous injection. In some embodiments, the autoimmune disease is selected from the group consisting of lupus (e.g., systemic lupus erythematosus, cutaneous lupus, discoid lupus), Sjogren's syndrome, inflammatory arthritis, systemic sclerosis (SSc), morphea, psoriasis, lichen planus, dermatomyositis, lichen sclerosus, and cutaneous graft-versus-host disease (GVHD), adrenergic drug resistance, alopecia areata, ankylosing spondylitis, antiphospholipid syndrome, autoimmune Addison's disease, autoimmune disease of the adrenal gland, allergic encephalomyelitis, autoimmune hemolytic anemia, autoimmune hepatitis, autoimmune inflammation. Autoimmune eye disease, autoimmune neonatal thrombocytopenia, autoimmune neutropenia, autoimmune oophoritis and orchitis, autoimmune thrombocytopenia, autoimmune thyroiditis, Behçet's disease, bullous pemphigoid, cardiomyopathy, open-heart syndrome, celiac sprue dermatitis, chronic active hepatitis, chronic fatigue immune deficiency syndrome (CFIDS), chronic inflammatory demyelinating polyneuropathy, Churg-Strauss syndrome, cicatricial pemphigoid, CREST syndrome, cold agglutinin disease, Crohn's disease, dense deposit disease, essential mixed cryoglobulinemia hypertension, fibromyalgia / fibromyositis, glomerulonephritis (e.g., IgA nephropathy), gluten-sensitive enteropathy, Goodpasture's syndrome, Graves' disease, Guillain-Barré, hyperthyroidism (Hashimoto's thyroiditis), idiopathic pulmonary fibrosis, idiopathic Addison's disease, idiopathic thrombocytopenic purpura (ITP), IgA neuropathy, juvenile arthritis, Meniere's disease, mixed connective tissue disease, multiple sclerosis, myasthenia gravis, myocarditis, type I or immune-mediated diabetes mellitus, neuritis, other endocrine glandular deficiencies, pemphigus vulgaris, pernicious anemia, polyarteritis nodosa, polyarteritis nodosa In one embodiment, the primary inflammatory disease is selected from relapsing chondritis, polyendocrinopathy, polyglandular syndrome, polymyalgia rheumatica, polymyositis, post-MI, primary agammaglobulinemia, primary biliary cirrhosis, psoriatic arthritis, Raynaud's phenomenon, relapsing polychondritis, Reiter's syndrome, rheumatic heart disease, rheumatoid arthritis, sarcoidosis, stiff man syndrome, Takayasu's arteritis, temporal arteritis-giant cell arteritis, ulcerative colitis, urticaria, uveitis, uveitis ophthalmia, vasculitis (e.g., dermatitis herpetiformis type vasculitis), vitiligo, and Wegener's granulomatosis.

[0233] In some embodiments, the disclosure provides a method for treating or inhibiting a solid tumor, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection, hi some embodiments, the solid tumor is a sarcoma, carcinoma, or lymphoma.

[0234] V. Dosage and Cycle / Timing The treatment regimens disclosed herein include administration of tagraxofusp or a pharmaceutical composition thereof to a subject in need thereof. Generally, the dosage based on weight is between 4 μg / kg and 20 μg / kg. In other embodiments, tagraxofusp is administered at a dose between 7 μg / kg and 16 μg / kg. In some embodiments, tagraxofusp is administered at a dose of 7 μg / kg. In some embodiments, tagraxofusp is administered at a dose of 9 μg / kg. In some embodiments, tagraxofusp is administered at a dose of 12 μg / kg. In other embodiments, tagraxofusp is administered at a dose of 12 μg / kg over 15 minutes. In other embodiments, tagraxofusp is administered at a dose that is the maximum tolerated dose.

[0235] The treatment regimens disclosed herein include administration of tagraxofusp or a pharmaceutical composition thereof to a subject in a single dose of 4 μg / kg to 20 μg / kg or in multiple doses (e.g., 2, 3, 4, 5, 6, 7, 8, 10 or more doses). For example, tagraxofusp is administered at a dose of 1 μg / kg, 4 μg / kg, 7 μg / kg, 8 μg / kg, 9 μg / kg, 12 μg / kg, 16 μg / kg, or 20 μg / kg.

[0236] In certain embodiments, the methods of treatment provided herein include administering tagraxofusp or a pharmaceutical composition thereof in a single or multiple doses. When administered in multiple doses, tagraxofusp or a pharmaceutical composition is administered at a frequency and in an amount sufficient to treat and / or manage the disease being treated. In certain embodiments, the frequency of administration ranges from once per day to once every 8 weeks. In certain embodiments, the conjugate is administered once per day. For example, in certain embodiments, tagraxofusp is administered once per day at a dose of 4 μg / kg / day to 20 μg / kg / day. For example, tagraxofusp is administered at a dose of 1 μg / kg / day, 4 μg / kg / day, 7 μg / kg, 8 μg / kg / day, 9 μg / kg, 12 μg / kg / day, 16 μg / kg / day, or 20 μg / kg / day. In certain embodiments, tagraxofusp is administered once daily at a dose of 7 μg / kg / day. In certain embodiments, tagraxofusp is administered once daily at a dose of 9 μg / kg / day. In certain embodiments, tagraxofusp is administered once daily at a dose of 12 μg / kg / day. In certain embodiments, tagraxofusp is administered once daily at a dose of 16 μg / kg / day. In certain embodiments, the conjugate is administered more than once daily, e.g., twice daily, three times daily, four times daily, five times daily or more.

[0237] The daily dose disclosed herein can be administered on consecutive days and / or non-consecutive days.In a specific embodiment, the daily dose is administered on non-consecutive days throughout a week, for example, Monday, Wednesday, and Friday.In another specific embodiment, the daily dose is administered on consecutive days throughout a week, for example, Monday through Sunday, or on fewer consecutive days (for example, 5 days).

[0238] In certain embodiments, tagraxofusp is administered once a day for one or more consecutive days. For example, tagraxofusp is administered once a day for 1, 2, 3, 4, 5, 6, or 7 days. In some embodiments, tagraxofusp is administered once a day for 3 days. In other embodiments, tagraxofusp is administered once a day for 5 days. In certain embodiments, the conjugate is administered once a week, twice a week, three times a week, four times a week, five times a week, six times a week, or seven times a week. In certain embodiments, tagraxofusp is administered at least twice a week (e.g., two, three, four, five or more times) or during a treatment cycle.

[0239] In certain embodiments, tagraxofusp is administered in a cycle, e.g., a treatment cycle is at least one week (e.g., one week, two weeks, three weeks, four weeks, five weeks or more). In certain embodiments, tagraxofusp is administered in multiple cycles, such that each treatment cycle is at least one week (e.g., one week, two weeks, three weeks, four weeks, five weeks or more). For example, in one embodiment, administration of tagraxofusp is repeated by administering tagraxofusp for multiple treatment cycles of two weeks, three weeks, four weeks, five weeks, six weeks, seven weeks, or eight weeks or more. In certain embodiments, administration of tagraxofusp is repeated by administering tagraxofusp at least one dose per treatment cycle (e.g., one dose, two doses, three doses, four doses, five doses, six doses, or seven or more doses). In certain embodiments, administration of tagraxofusp is repeated by administering tagraxofusp at 1-5 (e.g., 1, 2, 3, 4, 5) doses per treatment cycle. In certain embodiments, tagraxofusp is administered once daily for 1-5 consecutive days. In other embodiments, tagraxofusp is administered for 5 days on any day during the first 10 days of a 21-day cycle. In other embodiments, tagraxofusp is administered for 3 days during a 21-day cycle. In other embodiments, tagraxofusp is administered for 5 days during a 28-day cycle.

[0240] Tagraxofusp may be administered repeatedly for an unlimited number of cycles. For example, in certain embodiments, tagraxofusp is administered for as many cycles as deemed warranted by the attending physician. In certain embodiments, tagraxofusp is administered for 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 or more cycles.

[0241] In certain embodiments, the dose of tagraxofusp is administered as an intravenous infusion over, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 120, 180, or 240 minutes. In certain embodiments, tagraxofusp is administered as an intravenous infusion over 15 minutes.

[0242] VI. Combination Therapy The present disclosure also provides methods for treating and / or managing disease by administering to a subject a therapeutically effective amount of tagraxofusp and one or more additional therapies. In certain embodiments, the combination therapy comprises a pharmaceutical composition according to the present disclosure and at least one other therapy having the same mechanism of action as the conjugate. In another specific embodiment, the combination therapy comprises a pharmaceutical composition identified according to the methods of the present disclosure and at least one other therapy (e.g., a prophylactic or therapeutic agent) having a different mechanism of action than the conjugate.

[0243] The pharmaceutical compositions disclosed herein and the additional therapy may be administered separately, simultaneously, or sequentially. The drug combination may act additively or synergistically. The combination therapy of the present disclosure may reduce side effects associated with the therapy (e.g., prophylactic or therapeutic agent).

[0244] The therapeutic agents of the combination therapy can be administered to a subject in the same pharmaceutical composition. Alternatively, the therapeutic agents of the combination therapy can be administered simultaneously to a subject in separate pharmaceutical compositions. The prophylactic or therapeutic agents can be administered to a subject by the same or different routes of administration.

[0245] Unless otherwise indicated, all numbers recited throughout are modified by the term about, thereby including values ​​not more than 10% above or below the modified value.

[0246] Throughout this application, when a composition is described as having, including, or comprising particular components, or a process is described as having, including, or comprising particular process steps, it is contemplated that the compositions of the present teachings also consist essentially of or consist of the recited components, and that the processes of the present teachings also consist essentially of or consist of the recited process steps.

[0247] It is to be understood that, in this application, when an element or component is said to be included in and / or selected from a list of recited elements or components, the element or component may be any one of the recited elements or components, or the element or component may be selected from a group consisting of two or more of the recited elements or components. Furthermore, it is to be understood that the elements and / or features of the compositions, devices, or methods described herein may be combined in various ways, whether expressly or implied herein, without departing from the spirit and scope of the present teachings.

[0248] The phrase "at least one" should be understood to include each of the listed items following the phrase individually, and various combinations of two or more of the listed items, unless otherwise understood from context and usage.

[0249] Use of the terms "include," "includes," "including," "have," "has," "having," "contain," "contains," or "containing" (including grammatical equivalents thereof) should generally be understood to be open-ended and non-limiting, e.g., not excluding additional, unrecited elements or steps, unless otherwise specified or understood from the context. The use of any and all examples or exemplary language (e.g., "such as," "including," "for example") provided herein is intended merely to better illustrate embodiments and does not limit the scope of the invention unless otherwise stated in the claims. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the present teachings.

[0250] Use of the singular forms herein, e.g., "a," "an," or "the," includes the plural forms (and vice versa) unless specifically stated otherwise.

[0251] It should be understood that the order of steps or order for performing certain actions is immaterial so long as the present teachings remain operable. Moreover, two or more steps or actions may be conducted simultaneously.

[0252] At various places in this specification, values ​​are disclosed in groups or ranges. It is to be understood that such range formats are used merely for convenience and brevity and are to be interpreted flexibly. The description is specifically intended to include each and every individual subcombination of the members of such groups and ranges, as well as any combination of the various endpoints of such groups or ranges. For example, an integer in the range of 0 to 40 is specifically intended to disclose 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, and 40 individually, and an integer in the range of 1 to 20 is specifically intended to disclose 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 individually. EXAMPLES

[0253] In order that the invention described herein may be more fully understood, the following examples are presented. It should be understood that these examples are included only to illustrate certain aspects and embodiments of the present disclosure, and should not be construed as limiting the present invention in any manner. Reasonable variations as may occur to a person of ordinary skill in the art can be made herein without departing from the scope of the present disclosure.

[0254] Tagraxofusp is a fusion protein produced by fermentation in E. coli constructs genetically engineered to produce the target protein in inclusion bodies. The tagraxofusp protein is a CD123-directed cytotoxin composed of a fusion protein of human IL-3 and a truncated diphtheria toxin (DT) that targets CD123-expressing cells. It has an N-terminal methionine, and the DT portion contains the first 388 amino acids of diphtheria toxin (DT), including the catalytic and translocation domains. The amino acid sequence of tagraxofusp is as follows: (SEQ ID NO: 1).

[0255] Example 1: Baseline Aqueous Formulation The baseline aqueous formulation of tagraxofusp for injection was not a lyophilized formulation, and this formulation did not exhibit the desired shelf life at the preferred storage temperatures, as illustrated in this example.

[0256] Tagraxofusp for Injection, 1 mg / mL (1 mL / vial), was provided as a liquid drug product in a clear, colorless 2 cc glass vial. The composition of the drug product solution was 1.0 mg / mL tagraxofusp in 75 mM NaCl (USP, EP), 5% (w / w) sorbitol (USP / NF, EP), and 20 mM Tris buffer (USP, EP), pH 7.5. The formulation was intended to be stable under refrigerated storage conditions (5±3° C.), however, during generation of long-term stability data, it was found that storage at −20° C. was beneficial in achieving the desired shelf life. Stability studies, including evaluation by various analytical techniques such as reversed-phase ultra-high performance chromatography (RP-UPLC), size-exclusion high performance chromatography (SEC-HPLC), sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), AEX-UPLC, and potency by cytotoxicity bioassay, showed that the product began to fall outside the desired acceptance criteria within 12-18 months at 5±3°C, but met all acceptance criteria up to 36 months of testing without any significant decrease in purity or potency when stored at -20°C.

[0257] A lyophilized formulation of Tagraxofusp was developed to obtain the desired shelf life at the preferred storage temperature. Examples 2-5 below provide some of the experimental processes and procedures used to arrive at the final improved formulation for lyophilization, an example of which is shown in Example 6.

[0258] Example 2: Evaluation of Surfactants for Use in Improved Formulations for Lyophilization To address the tendency of proteins to form particulates, especially at the lower protein concentrations used for dose delivery, a suitable surfactant is added to the formulation as a precaution.

[0259] Table 1 shows the results of a study in which lyophilized tagraxofusp was added to a 50 cc saline infusion bag and stirred with various amounts of surfactant for 6 hours.

[0260] The freeze-drying step was carried out as follows: the product-filled vials were semi-stoppered with elastomeric stoppers and loaded onto the shelves of the freeze-drying chamber, which were maintained at 10° C. for pre-cooling. In the step designated as heat treatment or annealing, the shelf temperature was ramped down from 10° C. to −40° C. in 3 hours, held at −40° C. for 1 hour, ramped up to −10° C. in 1 hour, held at −10° C. for 1 hour, ramped down to −40° C. in 1 hour, and held at −40° C. for an additional hour. Following the procedure above, the condenser was cooled to below −60° C. and the vacuum pump was primed. The chamber pressure was then reduced to 0.133 mBar to initiate sublimation of the ice (also known as the primary drying step). In the primary drying stage, the shelf temperature was ramped up from −40° C. to −25° C. in 1 hour and held at this temperature for 40 hours. The shelf temperature was then ramped up to +25° C. in 14 hours. After this, the shelf temperature was maintained for an additional 23.3 hours in the secondary drying step to complete the drying cycle. Finally, the chamber was evacuated with nitrogen to an atmosphere of 900 mBar, and the vials were then fully stoppered under nitrogen and removed from the chamber.

[0261] The results showed that a small amount of surfactant was sufficient to prevent loss of product due to aggregation (as seen from recovery studies using SEC-HPLC) as well as the formation of visible particles. It was found that while both Polysorbate 80 and Poloxamer 188 were able to reduce particle formation, Polysorbate 80 was able to achieve this at a lower concentration than that of Poloxamer 188. Based on these results, Polysorbate 80 was selected as the surfactant and was included in all subsequent development studies. [Table 1]

[0262] Studies have shown a correlation between the amount of peroxide in the surfactant and the amount of impurity identified as an oxidized species of Tagraxofusp measured in the drug product upon release and during stability studies. Higher levels of peroxide in the surfactant (e.g., peroxide value >2 meqO2 / kg) result in higher levels of this impurity in the final drug product (e.g., >1%). The peroxide content of the surfactant was assessed using potentiometric titration according to the peroxide values ​​of the European Pharmacopoeia (EP) 2.5.5.

[0263] Quantification of oxidized species of tagraxofusp by RP-UPLC The purity of Tagraxofusp liquid drug product (DP) was determined using reversed phase ultra-performance liquid chromatography (RP-UPLC). The method was performed on a reversed phase ultra-performance liquid chromatography system (RP-UPLC) using an Agilent Zorbax 300SB-C3, 2.1×100 mm, 1.8 μm column. The column was eluted using a discontinuous gradient of water and acetonitrile with 0.1% TFA. Detection was performed at A280. The peak areas (%) of the main peak and major impurities relative to the total peak area are reported.

[0264] Equipment: A liquid chromatography system capable of handling 1.8 μm particle size reversed-phase columns equipped with an ultraviolet (UV) detector, a degassing module, a thermostatically controlled column compartment, and a refrigerated autosampler (e.g., a Waters Acquity H class UPLC with a 250 μL mixer and a 50 μL injection loop).

[0265] Solutions: Mobile phase A: purified water containing 0.1% trifluoroacetic acid (TFA), Mobile phase B: acetonitrile (ACN) containing 0.1% TFA.

[0266] Reference Standards and Sample Preparation: Reference substances were tested undiluted. The injection volume was calculated to deliver a target amount of 4.0 μg. For reference substances, the target load was 4.0 μg (2.7 μL of 1.5 mg / mL reference substance injected). The target load for drug substance was 4.0 μg (4.0 ul of 1 mg / mL DP injected).

[0267] Equipment setup: analysis-specific conditions (injection loop size: 50 μL) [Table 2]

[0268] Sample Setup: Run sequence for sample analysis [Table 3] *Sample volume determined by calculating a sample injection load of 4.0 μg (4 μL for DP of 1.0 mg / mL).

[0269] Before sample analysis, a blank injection was performed followed by five injections of a reference standard for system suitability. After nine sample injections, a bracket injection of a reference material (system suitability) was performed after the final sample injection. Each sample was injected in triplicate.

[0270] Peak Integration: The identity of the peaks in the samples was confirmed by comparison with the most recently injected reference material. The main peak retention time, impurity 1 RRT, and impurity 2 RRT of the tagraxofusp reference material were within the ranges specified under system suitability.

[0271] System Suitability. The chromatograms of the reference material were visually comparable to the exemplary chromatograms. The bracketed reference material injections had main peak purity within ±2.0% of the average purity (%) of the first five system suitability injections of the reference material. The main peak purity CV of the system suitability injections of the reference material was 2% or less. The USP theoretical plate criteria of the main peak of each system suitability injection was 11000 or greater. The USP tailing of the system suitability injections of the reference material was 2.2 or less. The main peak of the reference material varied between 13.9 and 16.0 minutes. The RRT of impurity 1 in the reference material was 0.91-0.92. The RRT of impurity 2 in the reference material was 0.93-0.95.

[0272] Assay acceptance criteria: All samples were run before and after bracketing standards. For triplicate injections of samples, the purity column volume (CV) (%) was ≤ 2% (n=3) for the purity of the main peak. For triplicate injections of samples, the CV was ≤ 2% (n=3) for the main peak retention time.

[0273] Example 3: Evaluation of stabilizers for use in improved formulations for lyophilization The thermal stability of Tagraxofusp bulk drug substance (BDS) was evaluated in the presence of various generally recognized as safe (GRAS) stabilizers by differential scanning calorimetry (DSC) studies and among the excipients evaluated, sucrose was found to provide the greatest increase in melting temperature (Tm). Table 2 and Figure 1 present these results. A high Tm value indicates that the excipient provides protection to the Tagraxofusp molecule by increasing the denaturation temperature, which is an indication that the excipient better stabilizes the molecule. As seen in Table 2, sucrose and mannitol rank highest among the excipients evaluated. Sucrose can also act as a cryoprotectant that protects against denaturation during the lyophilization process, both in the freezing and drying stages of the lyophilization cycle. Furthermore, mannitol can also act as a caking agent, providing structure to the cake and aiding in the removal of moisture during the sublimation and secondary drying processes. These tests were performed on non-lyophilized samples. [Table 4]

[0274] Example 4: Evaluation of buffers for improved formulations for lyophilization Four different buffers suitable for adjustment to the desired pH of 7.5 were evaluated in short-term stability studies of lyophilized Tagraxofusp samples. All formulations were prepared by diafiltration of bulk drug substance (including Tris buffer) into 10 mM buffer (either phosphate, arginine, histidine, or Tris buffer at pH 7.5). Sucrose (10% w / v) and polysorbate 80 (0.25% w / v) were added to these solutions. The solutions were filtered through a 0.22 μM low protein binding filter. 1.1 mL of the filtered solution was added to a clean 3 cc glass vial. The solution-filled vials were semi-stoppered with coated stoppers and placed in the lyophilizer chamber (model: Epsilon 2-6D, Ima Life, Italy). The lyophilization cycle used was as follows: shelf cooling to -40°C for 3 hours, followed by heat treatment at -15°C for 1 hour. The shelves were then cooled back to -45°C and the vacuum was started. Once the pressure was below 0.133 mBar, primary drying was carried out for approximately 16 hours at a shelf temperature of -30°C. The shelf temperature was then increased to 25°C over 14 hours and maintained at 25°C for an additional 12 hours during secondary drying. At the end of the cycle, the chamber was vented with dry air and the vials were stoppered in the chamber. The stoppered vials were removed and crimped with aluminum crimps.

[0275] Cake quality was assessed by appearance and reconstituted solutions were tested by SEC-HPLC for clarity and area (%) of tagraxofusp monomer. Tests were performed immediately after lyophilization and after 4 weeks of storage at 50°C. Table 3 summarizes the results. It shows that each buffer performed similarly. Use of Tris buffer can simplify the manufacturing process since it is also the buffer for the bulk drug substance. Therefore, it was selected as the buffer for subsequent testing. [Table 5] PT = phosphate buffer containing polysorbate 80, AT = arginine buffer containing polysorbate 80 HT = histidine buffer with polysorbate 80, TT = Tris buffer with polysorbate 80

[0276] Example 5: Evaluation of bulking agents for improved formulations for lyophilization Initial freeze-drying trials conducted in a laboratory-scale freeze-dryer utilizing sucrose (10% w / v) as a bulking agent / stabilizer yielded good cakes and demonstrated acceptable stability of freeze-dried tagraxofusp. However, in scale-up trials in larger freeze-dryer units, it was observed that the cake appearance was not consistently acceptable, with failures due to issues such as shrinkage. To address this, additional freeze-drying experiments were conducted in the laboratory where mannitol, another excipient commonly used in injectable products, was used as a bulking agent along with sucrose. The purpose of the mannitol was for the sucrose to act as an amorphous freeze / lyoprotectant during the freeze-drying process to protect the protein from the stresses of freezing and / or dehydration while providing a stiffer cake structure that ensured the cake would not shrink.

[0277] After modifying the formulation to include mannitol as a bulking agent, additional lyophilization experiments were performed to identify the amount of surfactant required to ensure control of fine particles in the new mannitol / sucrose matrix. Dried samples were evaluated for cake appearance, reconstitution time, pH, appearance after reconstitution, percent monomer by RP-HPLC, and residual water by Karl Fischer analysis. The results of these studies are summarized in Table 4 and concluded that polysorbate 80 surfactant at a level of 0.25% w / v remained adequate for acceptable stability of tagraxofusp lyophilized drug product for up to 11 months at room temperature storage. [Table 6] * After storage at room temperature for approximately 11 months.

[0278] Example 6: Final composition of the solution for lyophilization: Based on the above results and confirmation results from the formulation development run, a formulation of Tagraxofusp solution (1 mg / mL) for lyophilization was recommended for the proposed clinical trial as shown in Table 5. The formulation was consistently scaled for all materials when presenting at 1.5 mg. The table lists the composition of the solution for lyophilization as well as the rationale for the addition of each component. [Table 7] *This amount does not include 4% overfill by weight **Removed during freeze-drying

[0279] Physicochemical and biological properties: The pH of the drug product was set at 7.5, close to the physiological pH of 7.4, and consistent with the pH of both the drug product (DS) and conventional liquid drug formulations. This pH provides security against the known physical instability / loss of activity (potency) of DS at pH below 6.5. When the lyophilisate is reconstituted with Water for Injection (WFI), a clear, colourless liquid containing 1 mg / mL of Tagraxofusp is delivered, essentially free of particulates. The presence of low levels of surfactant prevents protein aggregation, a known attribute of DS, at lower dilutions such as those used for infusion.

[0280] The following is an example of a procedure for making one of the formulations disclosed herein.

[0281] Example 7: Preparation of injectable tagraxofusp The manufacturing process for Tagraxofusp for injection (1 mg / vial) consists of the following standard unit operations: compounding the solution for lyophilization, filtration through a grade 0.22 μm sterile filter, filling of the filtered sterile solution into glass vials, and lyophilization of the filled vials to obtain the final drug product cake.

[0282] Formula: The formulation of the lyophilized product was established as outlined herein above. In-process specifications were established to verify the pH, density, and Tagraxofusp concentration of the formulated drug product solution prior to proceeding to the sterilization procedure.

[0283] Sterilized through a 0.22 μm membrane filter: The bulk solution of Tagraxofusp for injection, like all protein therapeutics, cannot be terminally sterilized due to the heat sensitivity of the protein molecule. Thus, a standard sterile filtration operation was designed to perform sterilization of the formulated bulk solution by membrane filtration through one 0.45 μm pre-filter sterile filter and then through two 0.22 μm hydrophilic polyvinylidene fluoride (PVDF) membranes contained in a polycarbonate housing. The formulated bulk is passed through two sterile membranes in series, as is typical in sterile filtration operations, to provide redundant sterilization capacity.

[0284] Aseptic filling of sterile solutions: The vial and stopper combination selected for Tagraxofusp for injection was previously qualified on the contract manufacturer's production line. For each vial, 1.04 mL (1.06 grams) or 1.56 mL (1.59 grams) of membrane filtered sterile solution of Tagraxofusp is filled into a Type I pyrogen-free glass vial and the vial is semi-stoppered with a sterile rubber stopper. The filled vial is then transferred to a shelf in the lyophilizer chamber for lyophilization.

[0285] Overfill: The clinical drug product has a labeling of either 1 mg / vial and a target fill of 1.06 gm (1.04 mL) per vial or 1.5 mg / vial and a target fill of 1.59 gm (1.56 mL) per vial. Each vial contains a 4% overfill of tagraxofusp to allow for cake displacement during reconstitution and to ensure that the product has a concentration of exactly 1.0 mg / mL after reconstitution with 1.0 mL / 1.5 mL WFI during dose preparation. This overfill allows for accurate dose preparation on a dose / kg basis.

[0286] Freeze-drying cycle development: The main excipients of the injectable Tagraxofusp solution, sucrose and mannitol, are present at 25 mg / mL each and therefore in considerably larger amounts compared to the active ingredient, which is present at 1 mg / mL. The thermal properties of the frozen solution are therefore mainly determined by the properties of the frozen state of these two components. The freezing behavior of the Tagraxofusp solution for lyophilization by differential scanning calorimetry (DSC) showed minor endothermic events even at about 32°C. The lyophilization parameters during primary drying were selected such that the temperature of the product remained below -32°C during the sublimation stage of drying. A heat treatment step during freezing at -15°C for about 1 hour was included to ensure complete crystallization of mannitol and other metastable phases. Once the primary (sublimation) drying is complete, the shelf temperature is increased to 25°C and maintained at 25°C for the remainder of the drying cycle to ensure that the secondary (desorption) drying stage is completed and the dried product is obtained with low residual water levels.

[0287] After several experimental trials using various combinations of shelf temperature, chamber pressure, and duration of each stage, a freeze-drying cycle was finally determined that consistently yielded a well-formed cake with low residual water.

[0288] Table 6 summarizes the finalized process parameters used for the lyophilization of Tagraxofusp for injection. In addition to the cycle parameters listed above, additional specified loading times and extended freezing times were included in the final cycle as required for standard operation of the production scale equipment. Upon completion of the lyophilization process, the dried vials are fully stoppered in the lyophilization chamber, unloaded, sealed with aluminum crimps, and then rinsed. The crimped vials are then subjected to 100% visual inspection, quality testing, labeling, and packaging. [Table 8]

[0289] Density of tagraxofusp bulk solution for freeze-drying: The density of the tagraxofusp bulk solution for lyophilization was determined using an Anton-Paar densitometer at room temperature and found to be 1.02 g / mL.

[0290] Determination of the displacement volume of lyophilisates The displacement volume of the lyophilisate is the volume of reconstituted solution in milliliters displaced by 1.0 g or 1.5 g of lyophilized dry material. The displacement volume is required to determine the overfill required to achieve a 1 mg / mL solution when reconstituted with exactly 1.0 mL or 1.5 mL of WFI. The displacement volume of lyophilized tagraxofusp for injection was determined by placing 1000 mg of lyophilized material in a 10 mL volumetric flask and then adding 10.0 mL of water. The volume of solution over 10.0 mL caused by the displacement due to the solid content was then measured. It was found that when 1 gm of lyophilized material was dissolved, approximately 0.73 mL of water was displaced.

[0291] Using this relationship, the displacement value of the lyophilized cake was calculated as follows: total weight of active pharmaceutical ingredient (API) + excipients added per mL of drug product (DP) solution is 55.94 mg. Thus, for a fill volume of 1.0 mL at 1.0 mg / mL tagraxofusp, the displacement value of the dry material is 0.04 mL, resulting in a total volume of 1.04 mL or 0.96 mg / mL active substance. To account for this discrepancy caused by the displacement volume, approximately 1.04 mL or 1.56 mL of solution must be filled and lyophilized for the 1.0 mg / vial fill and 1.5 mg / vial fill, respectively. The resulting dry product then contains sufficient tagraxofusp active substance to deliver the target concentration in the reconstituted solution. The present application provides the following aspects of the invention. (Aspect 1) A stable solution for lyophilization in a pharma- ceutically acceptable aqueous carrier, comprising: 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; At least one buffering agent at 5-25 mM, and having a pH of 6.5-9.0; A stable solution for lyophilization, wherein the surfactant has less than 3% peroxide. (Aspect 2) The lyophilized solution according to embodiment 1, wherein the lyophilized solution further comprises 2-10% w / v of at least one bulking agent. (Aspect 3) 2. The lyophilized solution of any one of the preceding aspects, comprising 0.6-1.4 mg / mL tagraxofusp, or 0.7-1.3 mg / mL tagraxofusp, or 0.8-1.2 mg / mL tagraxofusp, or 1 mg / mL tagraxofusp. (Aspect 4) 5. The lyophilized solution according to any one of the preceding aspects, wherein the surfactant is present in an amount of 0.07-1.5% w / v, or 0.1-1.3% w / v, or 0.15-1.2% w / v, or 0.25-1% w / v, or 0.24-0.26% w / v. (Aspect 5) 4. The lyophilized solution of any one of the preceding aspects, wherein the surfactant is selected from a polysorbate or a poloxamer, or the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80, or the surfactant is polysorbate 80. (Aspect 6) 5. The lyophilized solution according to any one of the preceding aspects, wherein the disaccharide sugar is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v. (Aspect 7) 4. The lyophilization solution of any one of the preceding aspects, wherein the disaccharide sugar is selected from trehalose, lactose, and sucrose, or the disaccharide sugar is sucrose. (Aspect 8) 5. The lyophilized solution according to any one of the preceding aspects, wherein the bulking agent is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v. (Aspect 9) 4. The lyophilization solution of any one of the preceding aspects, wherein the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol, or the bulking agent is mannitol. (Aspect 10) The lyophilized solution of any one of the preceding aspects, wherein the at least one buffering agent is at a concentration of 5-15 mM, or 7-12 mM, or 10 mM. (Aspect 11) 4. The lyophilization solution of any one of the preceding aspects, wherein the buffering agent is selected from phosphate, arginine, histidine, and Tris HCl, or the buffering agent is Tris HCl. (Aspect 12) 4. The lyophilized solution according to any one of the preceding aspects, wherein the pH is from 6.5 to 8, or the pH is from 7 to 8. (Aspect 13) A stable lyophilized solution in a pharma- ceutically acceptable aqueous medium, comprising: 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl; It has a pH of 6.5 to 9. A lyophilized solution, wherein the polysorbate 80 has 3% or less peroxide. (Aspect 14) 14. The lyophilization solution according to aspect 13, further comprising 2-10% w / v mannitol. (Aspect 15) 1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 9 to 11 mM Tris HCl; It has a pH of 6.5 to 9. 14. The lyophilized solution of embodiment 13, wherein the polysorbate 80 has 3% or less peroxide. (Aspect 16) 2. A lyophilisate prepared from the lyophilisation solution of any one of the preceding aspects. (Aspect 17) (a) the relative abundance (%) of the oxidized species of tagraxofusp does not increase by more than 2% or more than 1% over a period of 12 to 36 months, or the relative abundance (%) of the oxidized species of tagraxofusp does not increase by more than 2% or more than 1% over a period of 18 to 24 months; (b) the relative abundance (%) of the acidic species of tagraxofusp does not increase over the relative abundance (%) of the same acidic species of tagraxofusp in a liquid tagraxofusp formulation during storage for 18, 24, or 36 months; (c) the formulation provides a required dose of 1 to 1.5 mg on a dry weight basis; (d) the lyophilized dry product is stable at a storage temperature of 2°C to 8°C for at least 24 months, or the lyophilized dry product is stable at a storage temperature of 2°C to 8°C for 24 months to 5 years, and / or (e) The lyophilisate according to aspect 16, wherein the oxidized impurity is less than or equal to 2%, or less than or equal to 1%, as determined by reversed-phase ultra-performance chromatography (RP-UPLC), and / or the oxidized impurity is measurable as a single peak at +16 Da from the tagraxofusp peak in mass spectrometry analysis, and / or the oxidized impurity elutes before the tagraxofusp peak in RP-UPLC analysis and the peak of the oxidized impurity on the RP-UPLC chromatogram is the closest peak to the tagraxofusp peak. (Aspect 18) A stable lyophilisate comprising: 1 mg of tagraxofusp, 25 mg of at least one disaccharide sugar; 25 mg of at least one surfactant; 2.4 mg of at least one buffering agent; A stable lyophilisate having less than 2% oxidative impurities as determined by reversed phase ultra-performance chromatography (RP-UPLC) for at least 24 months. (Aspect 19) (a) further comprising 25 mg of at least one bulking agent; and / or (b) A stable lyophilisate according to embodiment 18, wherein the relative abundance (%) of oxidized species of Tagraxofusp does not increase to more than 2% or more than 1% over a period of 18 to 24 months. (Aspect 20) 1. A method for preparing a lyophilisate of tagraxofusp, comprising the steps of: a) providing a lyophilized solution according to any one of aspects 1 to 15; b) lyophilizing the solution to form a lyophilisate. (Aspect 21) The freeze-drying is carried out at a temperature between −40° C. and 25° C. for a period of 2 to 7 days, and / or the freeze-drying comprises a loading step, at least one freezing step, at least one annealing step and at least one drying step; and / or the freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps and at least one drying step; and / or 21. The method of claim 20, wherein the freeze-drying comprises a loading step, at least two freezing steps, at least two annealing steps performed over a period of less than one day, and at least one drying step performed over a period of one to five days. (Aspect 22) The freeze-drying process comprises the following freeze-drying cycle: a) loading the sample containing the freeze-drying solution into a freeze-dryer, the sample being pre-cooled by lowering the temperature of the freeze-dryer to 10° C. for 10 minutes at ambient freeze-dryer pressure; b) freezing the sample in a first freezing step, wherein the temperature of the freeze-dryer is changed from 10° C. to −40° C. over a period of 180 minutes at ambient freeze-dryer pressure; c) freezing the sample in a second freezing step, wherein the temperature of the freeze-dryer is held at -40°C for 60 minutes at ambient freeze-dryer pressure; d) annealing the sample in a first annealing step, in which the temperature of the freeze-dryer is changed from −40° C. to −15° C. over a period of 60 minutes at ambient freeze-dryer pressure; e) annealing the sample in a second annealing step, in which the temperature of the freeze-dryer is held at −15° C. for 60 minutes at ambient freeze-dryer pressure; f) annealing the sample in a third annealing step, in which the temperature of the freeze-dryer is changed from −15° C. to −40° C. over a period of 60 minutes at ambient freeze-dryer pressure; g) annealing the sample in a fourth annealing step, wherein the temperature of the freeze-dryer is held at -40°C for about 60 minutes at ambient freeze-dryer pressure; h) drying the sample in a first primary drying step, wherein the freeze-dryer temperature is held at -40°C and the freeze-dryer pressure is held at 0.133 mBar for 10 minutes; i) drying the sample in a second primary drying step, wherein the freeze-dryer temperature is changed from -40°C to -25°C and the freeze-dryer pressure is held at 0.133mBar for 60 minutes; j) drying the sample in a third primary drying step, wherein the freeze-dryer temperature is held at -25°C and the freeze-dryer pressure is held at 0.133mBar for 2400 minutes; k) drying the sample in a fourth primary drying step, wherein the freeze-dryer temperature is varied from -25°C to 25°C and the freeze-dryer pressure is held at 0.133mBar for 840 minutes; 22. The method according to aspect 20 or 21, comprising: l) drying the sample in a secondary drying step, wherein the freeze-dryer temperature is held at 25° C. and the freeze-dryer pressure is held at 0.1333 mBar for 1390 minutes. (Aspect 23) A pharma- ceutically acceptable formulation reconstituted in an aqueous medium for intravenous injection, comprising: 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v of at least one disaccharide sugar; 0.05-1.5% w / v of at least one surfactant; and 5-25 mM of at least one buffering agent. (Aspect 24) (a) the relative abundance (%) of the oxidized species of Tagraxofusp did not increase by more than 2% or more than 1% over a period of 18 to 24 months; (b) the lyophilization solution further comprises at least one bulking agent at 2-10% w / v; (c) the formulation contains 0.5 to 1.5 mg / mL tagraxofusp, or 0.6 to 1.4 mg / mL tagraxofusp, or 0.7 to 1.3 mg / mL tagraxofusp, 0.8 to 1.2 mg / mL tagraxofusp, or 1 mg / mL tagraxofusp, (d) the surfactant is present in an amount of 0.07-1.5% w / v, or 0.1-1.3% w / v, or 0.15-1.2% w / v, or 0.25-1.0% w / v, or 0.24-0.26% w / v; (e) the surfactant is selected from polysorbates or poloxamers, or the surfactant is poloxamer 188, poloxamer 168, poloxamer 144, polysorbate 20, polysorbate 60, or polysorbate 80, or the surfactant is polysorbate 80; (f) the disaccharide sugar is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v; (g) the disaccharide sugar is selected from trehalose, lactose, and sucrose, or the disaccharide sugar is sucrose; (h) the bulking agent is present in an amount of 2-8% w / v, or 2-6% w / v, or 2-4% w / v, or 2-3% w / v, or 2.45-2.55% w / v; (i) the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol, or the bulking agent is mannitol; (j) adding at least one buffering agent at a concentration of 5 to 15 mM, or 7 to 12 mM, or 9 to 11 mM, or 10 mM; (k) the buffer is selected from phosphate, arginine, histidine, and Tris HCl, or the buffer is Tris HCl; and / or (l) The reconstituted formulation for intravenous injection according to aspect 23, wherein the pH is from 6.5 to 9, or the pH is from 7 to 8. (Aspect 25) 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5 to 25 mM Tris HCl; It has a pH of 6.5 to 9. 25. The reconstituted formulation for intravenous injection according to aspect 23 or 24, wherein said aqueous medium is water for injection (WFI). (Aspect 26) 26. The reconstituted formulation of aspect 25, wherein the reconstituted formulation further comprises 2-10% w / v mannitol. (Aspect 27) 0.9 to 1.1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 9 to 11 mM Tris HCl; 27. The reconstituted formulation for intravenous injection according to any one of aspects 23 to 26, having a pH of 6.5 to 9. (Aspect 28) 28. The reconstituted formulation for intravenous injection of any one of aspects 23-27, which, when diluted in an infusion solution bag, provides a substantially particulate matter free fluid in said infusion solution bag. (Aspect 29) A method for treating a disease, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection according to any one of aspects 23-28, wherein the disease is a) Myeloproliferative neoplasms (MPN) with monocytosis, b) Myeloproliferative neoplasms (MPNs), which are polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF), chronic myelomonocytic leukemia (CMML), chronic neutrophilic leukemia, chronic eosinophilic leukemia, systemic mastocytosis (SM), symptomatic eosinophilic disorders, or other bone marrow diseases that cause excess production of red blood cells, white blood cells, and / or platelets, or primary eosinophilic disorders (PEDs); c) acute myeloid leukemia (AML), d) chronic myelomonocytic leukemia (CMML), e) myelodysplastic syndromes (MDS), f) multiple myeloma, g) blastic plasmacytoid dendritic cell neoplasm (BPDCN), h) autoimmune diseases; i) Autoimmune diseases, the autoimmune diseases being lupus (e.g., systemic lupus erythematosus, cutaneous lupus, discoid lupus), Sjogren's syndrome, inflammatory arthritis, systemic sclerosis (SSc), morphea, psoriasis, lichen planus, dermatomyositis, lichen sclerosus, and cutaneous graft-versus-host disease (GVHD), adrenergic drug resistance, alopecia areata, ankylosing spondylitis, antiphospholipid syndrome, autoimmune Addison's disease, autoimmune diseases of the adrenal gland, allergic encephalomyelitis, autoimmune hemolytic anemia, autoimmune hepatitis, autoimmune inflammatory eye diseases, and the like. Diseases, Autoimmune Neonatal Thrombocytopenia, Autoimmune Neutropenia, Autoimmune Oophoritis and Orchitis, Autoimmune Thrombocytopenia, Autoimmune Thyroiditis, Behçet's Disease, Bullous Pemphigoid, Cardiomyopathy, Open Heart Syndrome, Celiac Sprue Dermatitis, Chronic Active Hepatitis, Chronic Fatigue Immune Deficiency Syndrome (CFIDS), Chronic Inflammatory Demyelinating Polyneuropathy, Churg-Strauss Syndrome, Cicatricial Pemphigoid, CREST Syndrome, Cold Agglutinin Disease, Crohn's Disease, Dense Deposit Disease, Essential Mixed Cryoglobulinemia, Fibromyalgia fibromyositis, glomerulonephritis (e.g. IgA nephropathy), gluten-sensitive enteropathy, Goodpasture's syndrome, Graves' disease, Guillain-Barré, hyperthyroidism (Hashimoto's thyroiditis), idiopathic pulmonary fibrosis, idiopathic Addison's disease, idiopathic thrombocytopenic purpura (ITP), IgA neuropathy, juvenile arthritis, Meniere's disease, mixed connective tissue disease, multiple sclerosis, myasthenia gravis, myocarditis, type I or immune-mediated diabetes mellitus, neuritis, other endocrine glandular deficiencies, pemphigus vulgaris, pernicious anemia, polyarteritis nodosa, polychondritis, polyglandular endocrine deficiency The autoimmune disease is selected from: secretory disorders, polyglandular syndromes, polymyalgia rheumatica, polymyositis, post-MI, primary agammaglobulinemia, primary biliary cirrhosis, psoriatic arthritis, Raynaud's phenomenon, relapsing polychondritis, Reiter's syndrome, rheumatic heart disease, rheumatoid arthritis, sarcoidosis, stiff man syndrome, Takayasu's arteritis, temporal arteritis-giant cell arteritis, ulcerative colitis, urticaria, uveitis, uveitis ophthalmia, vasculitis (e.g., dermatitis herpetiformis type vasculitis), vitiligo, and Wegener's granulomatosis. (Aspect 30) A method for treating or inhibiting a solid tumor, comprising administering to a subject in need thereof an effective amount of a reconstituted formulation for intravenous injection of any one of aspects 23-28, optionally wherein the solid tumor is selected from a sarcoma, a carcinoma, and a lymphoma. (Aspect 31) 16. A stable pharma- ceutically acceptable lyophilized solution according to any one of aspects 1 to 15, in a vial. (Aspect 32) 20. The lyophilisate according to any one of aspects 16 to 19, in a vial. (Aspect 33) A vial comprising a reconstituted solution according to any one of aspects 23 to 28. (Aspect 34) 34. The solution, lyophilisate, or vial according to any one of aspects 31 to 33, wherein the vial is a 2 mL or 3 mL vial.

Claims

1. A stable solution in a pharma- ceutically acceptable aqueous carrier, comprising: 0.5 to 1.5 mg / mL tagraxofusp; 2-10% w / v sucrose; 0.05-1.5% w / v polysorbate 80; 5-25 mM Tris HCl; and having a pH of 6.5 to 9.0; The stable solution, wherein the polysorbate 80 has less than 3% peroxide.

2. 10. The stable solution of claim 1, further comprising 2-10% w / v of at least one bulking agent.

3. A stable solution described in claim 1 or 2 containing 0.7 to 1.3 mg / mL tagraxofusp.

4. 4. The stable solution of any one of claims 1 to 3, wherein the polysorbate 80 is present in an amount of 0.1 to 1.3% w / v.

5. 5. The stable solution of any one of claims 1 to 4, wherein the sucrose is present in an amount of 2 to 6% w / v.

6. A stable solution described in any one of claims 2 to 5, wherein the bulking agent is present in an amount of 2 to 8% w / v.

7. 7. The stable solution of claim 2 or 6, wherein the bulking agent is selected from glycine, maltose, glucose, mannitol, and sorbitol.

8. 8. The stable solution according to any one of claims 1 to 7, wherein the pH is from 6.5 to 8, or the pH is from 7 to 8.

9. The stable solution of claim 7, wherein the bulking agent is mannitol.

10. 1 mg / mL tagraxofusp; 2.45-2.55% w / v sucrose; 2.45-2.55% w / v mannitol; 0.24-0.26% w / v polysorbate 80; 5-25 mM Tris HCl; and having a pH of 6.5 to 9; 2. The stable solution of claim 1, wherein the polysorbate 80 has no more than 3% peroxide.

11. The stable solution of any one of claims 1 to 10, which is frozen.

12. 12. The stable solution of any one of claims 1 to 11, wherein the stable solution is at a temperature below 0°C.

13. 13. The stable solution of any one of claims 1 to 12, which when diluted in an infusion solution bag provides a substantially particulate matter free fluid in said infusion solution bag.

14. A formulation for intravenous injection comprising one part of the stable solution of any one of claims 1 to 13 and 50 parts water for injection in an infusion bag.

15. 15. The formulation for intravenous injection of claim 14, wherein the formulation is essentially free of particulate matter and further wherein the water for injection in the infusion solution bag comprises saline or 5% (w / v) dextrose.

16. A stable solution according to any one of claims 1 to 13 or a formulation for intravenous injection according to claims 14 or 15 for use in the treatment of a disease, said disease being a) myeloproliferative neoplasms (MPNs) with monocytosis; b) Myeloproliferative neoplasms (MPNs), wherein the MPNs are polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF), chronic myelomonocytic leukemia (CMML), chronic neutrophilic leukemia, chronic eosinophilic leukemia, systemic mastocytosis (SM), symptomatic eosinophilic disorder, or other bone marrow diseases that cause excess production of red blood cells, white blood cells, and / or platelets, or primary eosinophilic disorder (PED); c) acute myeloid leukemia (AML); d) chronic myelomonocytic leukemia (CMML), e) myelodysplastic syndrome (MDS), f) multiple myeloma, g) blastic plasmacytoid dendritic cell neoplasm (BPDCN); h) autoimmune diseases; i) Autoimmune diseases, wherein the autoimmune disease is lupus (e.g., systemic lupus erythematosus, cutaneous lupus, discoid lupus), Sjogren's syndrome, inflammatory arthritis, systemic sclerosis (SSc), morphea, psoriasis, lichen planus, dermatomyositis, lichen sclerosus, and cutaneous graft-versus-host disease (GVHD), adrenergic drug resistance, alopecia areata, ankylosing spondylitis, antiphospholipid syndrome, autoimmune Addison's disease, autoimmune diseases of the adrenal gland, allergic encephalomyelitis, autoimmune hemolytic anemia, autoimmune hepatitis, autoimmune inflammatory eye diseases, autoimmune inflammatory disorders ... Neonatal immune thrombocytopenia, autoimmune neutropenia, autoimmune oophoritis and orchitis, autoimmune thrombocytopenia, autoimmune thyroiditis, Behçet's disease, bullous pemphigoid, cardiomyopathy, open-heart syndrome, celiac sprue dermatitis, chronic active hepatitis, chronic fatigue immune deficiency syndrome (CFIDS), chronic inflammatory demyelinating polyneuropathy, Churg-Strauss syndrome, cicatricial pemphigoid, CREST syndrome, cold agglutinin disease, Crohn's disease, dense deposit disease, essential mixed cryoglobulinemia, fibromyalgia / fibromyositis, glomerular Nephritis (e.g., IgA nephropathy), gluten-sensitive enteropathy, Goodpasture's syndrome, Graves' disease, Guillain-Barre, hyperthyroidism (i.e., Hashimoto's thyroiditis), idiopathic pulmonary fibrosis, idiopathic Addison's disease, idiopathic thrombocytopenic purpura (ITP), IgA neuropathy, juvenile arthritis, Meniere's disease, mixed connective tissue disease, multiple sclerosis, myasthenia gravis, myocarditis, type I or immune-mediated diabetes mellitus, neuritis, other endocrine glandular deficiencies, pemphigus vulgaris, pernicious anemia, polyarteritis nodosa, polychondritis, polyendocrinopathy, polyglandular syndrome, leukemia ... The stable solution or formulation for intravenous injection is an autoimmune disease selected from polymyalgia umatica, polymyositis, post-MI, primary agammaglobulinemia, primary biliary cirrhosis, psoriatic arthritis, Raynaud's phenomenon, relapsing polychondritis, Reiter's syndrome, rheumatic heart disease, rheumatoid arthritis, sarcoidosis, stiff man syndrome, Takayasu's arteritis, temporal arteritis-giant cell arteritis, ulcerative colitis, urticaria, uveitis, uveitis ophthalmia, vasculitis (e.g., dermatitis herpetiformis type vasculitis), vitiligo, and Wegener's granulomatosis.

17. The stable solution according to any one of claims 1 to 13 or the formulation for intravenous injection according to claim 14 or 15 for use in treating or inhibiting a solid tumor, optionally wherein the solid tumor is selected from sarcoma, carcinoma, and lymphoma.

18. A vial comprising a stable solution according to any one of claims 1 to 13 or a formulation for intravenous injection according to claim 14.

19. 19. The vial of claim 18, wherein the vial is a 2 mL or 3 mL vial.

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