FDA approves new combination treatment for acute myeloid leukemia, Rydapt (midostaurin)

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MIDOSTAURIN

04/28/2017
The U.S. Food and Drug Administration today approved Rydapt (midostaurin) for the treatment of adult patients with newly diagnosed acute myeloid leukemia (AML) who have a specific genetic mutation called FLT3, in combination with chemotherapy. The drug is approved for use with a companion diagnostic, the LeukoStrat CDx FLT3 Mutation Assay, which is used to detect the FLT3 mutation in patients with AML.

April 28, 2017

Release

The U.S. Food and Drug Administration today approved Rydapt (midostaurin) for the treatment of adult patients with newly diagnosed acute myeloid leukemia (AML) who have a specific genetic mutation called FLT3, in combination with chemotherapy. The drug is approved for use with a companion diagnostic, the LeukoStrat CDx FLT3 Mutation Assay, which is used to detect the FLT3 mutation in patients with AML.

AML is a rapidly progressing cancer that forms in the bone marrow and results in an increased number of white blood cells in the bloodstream. The National Cancer Institute estimated that approximately 19,930 people would be diagnosed with AML in 2016 and 10,430 were projected to die of the disease.

“Rydapt is the first targeted therapy to treat patients with AML, in combination with chemotherapy,” said Richard Pazdur, M.D., acting director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research and director of the FDA’s Oncology Center of Excellence. “The ability to detect the gene mutation with a diagnostic test means doctors can identify specific patients who may benefit from this treatment.”

Rydapt is a kinase inhibitor that works by blocking several enzymes that promote cell growth. If the FLT3 mutation is detected in blood or bone marrow samples using the LeukoStrat CDx FLT3 Mutation Assay, the patient may be eligible for treatment with Rydapt in combination with chemotherapy.

The safety and efficacy of Rydapt for patients with AML were studied in a randomized trial of 717 patients who had not been treated previously for AML. In the trial, patients who received Rydapt in combination with chemotherapy lived longer than patients who received chemotherapy alone, although a specific median survival rate could not be reliably estimated. In addition, patients who received Rydapt in combination with chemotherapy in the trial went longer (median 8.2 months) without certain complications (failure to achieve complete remission within 60 days of starting treatment, progression of leukemia or death) than patients who received chemotherapy alone (median three months).

Common side effects of Rydapt in patients with AML include low levels of white blood cells with fever (febrile neutropenia), nausea, inflammation of the mucous membranes (mucositis), vomiting, headache, spots on the skin due to bleeding (petechiae), musculoskeletal pain, nosebleeds (epistaxis), device-related infection, high blood sugar (hyperglycemia) and upper respiratory tract infection. Rydapt should not be used in patients with hypersensitivity to midostaurin or other ingredients in Rydapt. Women who are pregnant or breastfeeding should not take Rydapt because it may cause harm to a developing fetus or a newborn baby. Patients who experience signs or symptoms of lung damage (pulmonary toxicity) should stop using Rydapt.

Rydapt was also approved today for adults with certain types of rare blood disorders (aggressive systemic mastocytosis, systemic mastocytosis with associated hematological neoplasm or mast cell leukemia). Common side effects of Rydapt in these patients include nausea, vomiting, diarrhea, swelling (edema), musculoskeletal pain, abdominal pain, fatigue, upper respiratory tract infection, constipation, fever, headache and shortness of breath.

The FDA granted this application Priority Review, Fast Track (for the mastocytosis indication) and Breakthrough Therapy (for the AML indication) designations.

The FDA granted the approval of Rydapt to Novartis Pharmaceuticals Corporation. The FDA granted the approval of the LeukoStrat CDx FLT3 Mutation Assay to Invivoscribe Technologies Inc.

MIDOSTAURIN

(9S,10R,11R,13R)-2,3,10,11,12,13-Hexahydro-10-methoxy-9-methyl-11-(methylamino)-9,13-epoxy-1H,9H-diindolo[1,2,3-gh:3′,2′,1′-lm]pyrrolo[3,4-j][1,7]benzodiamzonine-1-one

N-[(9S,10R,11R,13R)-2,3,10,11,12,13-Hexahydro-10-methoxy-9-methyl-1-oxo-9,13-epoxy-1H,9H-diindolo[1,2,3-gh:3′,2′,1′-lm]pyrrolo[3,4-j][1,7]benzodiazonin-11-yl]-N-methylbenzamide

N-((9S,10R,11R,13R)-2,3,9,10,11,12-hexahydro-10-methoxy-9-methyl-1-oxo-9,13-epoxy-1H,9H-diindolo(1,2,3-gh:3′,2′,1′-lm)pyrrolo(3,4-j)(1,7)benzodiazonin-11-yl)-N-methyl-,

N-[(2R,4R,5R,6S)-5-methoxy-6-methyl-18-oxo-29-oxa-1,7,17-triazaoctacyclo[12.12.2.12,6.07,28.08,13.015,19.020,27.021,26]nonacosa-8,10,12,14(28),15(19),20(27),21(26),22,24-nonaen-4-yl]-N-methylbenzamide hydrate

N-benzoyl staurosporine

NOVARTIS ONCOLOGY ORIGINATOR

Chemical Formula: C35H30N4O4

Exact Mass: 570.22671

Molecular Weight: 570.63710

Elemental Analysis: C, 73.67; H, 5.30; N, 9.82; O, 11.22

Tyrosine kinase inhibitors

PKC 412。PKC412A。CGP 41251。Benzoylstaurosporine;4′-N-Benzoylstaurosporine;Cgp 41251;Cgp 41 251.

120685-11-2 CAS

PHASE 3

  • 4′-N-Benzoylstaurosporine
  • Benzoylstaurosporine
  • Cgp 41 251
  • CGP 41251
  • CGP-41251
  • Midostaurin
  • PKC 412
  • PKC412
  • UNII-ID912S5VON

Midostaurin is an inhibitor of tyrosine kinase, protein kinase C, and VEGF. Midostaurin inhibits cell growth and phosphorylation of FLT3, STAT5, and ERK. It is a potent inhibitor of a spectrum of FLT3 activation loop mutations.

it  is prepared by acylation of the alkaloid staurosporine (I) with benzoyl chloride (II) in the presence of diisopropylethylamine in chloroform.Production Route of Midostaurin

Midostaurin is a synthetic indolocarbazole multikinase inhibitor with potential antiangiogenic and antineoplastic activities. Midostaurin inhibits protein kinase C alpha (PKCalpha), vascular endothelial growth factor receptor 2 (VEGFR2), c-kit, platelet-derived growth factor receptor (PDGFR) and FMS-like tyrosine kinase 3 (FLT3) tyrosine kinases, which may result in disruption of the cell cycle, inhibition of proliferation, apoptosis, and inhibition of angiogenesis in susceptible tumors.

MIDOSTAURIN

Derivative of staurosporin, orally active, potent inhibitor of FLT3 tyrosine kinase (fetal liver tyrosine kinase 3). In addition Midostaurin inhibits further molecular targets such as VEGFR-1 (Vascular Endothelial Growth Factor Receptor 1), c-kit (stem cell factor receptor), H-and K-RAS (Rat Sarcoma Viral homologue) and MDR (multidrug resistance protein).

Midostaurin inhibits both wild-type FLT3 and FLT3 mutant, wherein the internal tandem duplication mutations (FLT3-ITD), and the point mutation to be inhibited in the tyrosine kinase domain of the molecule at positions 835 and 836.Midostaurin is tested in patients with AML.

Midostaurin, a protein kinase C (PKC) and Flt3 (FLK2/STK1) inhibitor, is in phase III clinical development at originator Novartis for the oral treatment of acute myeloid leukemia (AML).

Novartis is conducting phase III clinical trials for the treatment of aggressive systemic mastocytosis or mast cell leukemia. The National Cancer Institute (NCI) is conducting phase I/II trials with the drug for the treatment of chronic myelomonocytic leukemia (CMML) and myelodysplastic syndrome (MDS).

Massachusetts General Hospital is conducting phase I clinical trials for the treatment of adenocarcinoma of the rectum in combination with radiation and standard chemotherapy.

MIDOSTAURIN

Midostaurin (PKC412) is a multi-target protein kinase inhibitor being investigated for the treatment of acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). It is a semi-synthetic derivative of staurosporine, an alkaloid from the bacterium Streptomyces staurosporeus, and is active in patients with mutations of CD135 (FMS-like tyrosine kinase 3 receptor).[1]

After successful Phase II clinical trials, a Phase III trial for AML has started in 2008. It is testing midostaurin in combination with daunorubicin and cytarabine.[2] In another trial, the substance has proven ineffective in metastatic melanoma.[3]

Midostaurin has also been studied at Johns Hopkins University for the treatment of age-related macular degeneration (AMD), but no recent progress reports for this indication have been made available. Trials in macular edema of diabetic origin were discontinued at Novartis.

In 2004, orphan drug designation was received in the E.U. for the treatment of AML. In 2009 and 2010, orphan drug designation was assigned for the treatment of acute myeloid leukemia and for the treatment of mastocytosis, respectively, in the U.S. In 2010, orphan drug designation was assigned in the E.U. for the latter indication.

MIDOSTAURIN

References

  1.  Fischer, T.; Stone, R. M.; Deangelo, D. J.; Galinsky, I.; Estey, E.; Lanza, C.; Fox, E.; Ehninger, G.; Feldman, E. J.; Schiller, G. J.; Klimek, V. M.; Nimer, S. D.; Gilliland, D. G.; Dutreix, C.; Huntsman-Labed, A.; Virkus, J.; Giles, F. J. (2010). “Phase IIB Trial of Oral Midostaurin (PKC412), the FMS-Like Tyrosine Kinase 3 Receptor (FLT3) and Multi-Targeted Kinase Inhibitor, in Patients with Acute Myeloid Leukemia and High-Risk Myelodysplastic Syndrome with Either Wild-Type or Mutated FLT3”. Journal of Clinical Oncology 28 (28): 4339–4345. doi:10.1200/JCO.2010.28.9678PMID 20733134edit
  2.  ClinicalTrials.gov NCT00651261 Daunorubicin, Cytarabine, and Midostaurin in Treating Patients With Newly Diagnosed Acute Myeloid Leukemia
  3.  Millward, M. J.; House, C.; Bowtell, D.; Webster, L.; Olver, I. N.; Gore, M.; Copeman, M.; Lynch, K.; Yap, A.; Wang, Y.; Cohen, P. S.; Zalcberg, J. (2006). “The multikinase inhibitor midostaurin (PKC412A) lacks activity in metastatic melanoma: a phase IIA clinical and biologic study”British Journal of Cancer 95 (7): 829–834. doi:10.1038/sj.bjc.6603331PMC 2360547PMID 16969355.
    1. Midostaurin product page, Fermentek
    2.  Wang, Y; Yin, OQ; Graf, P; Kisicki, JC; Schran, H (2008). “Dose- and Time-Dependent Pharmacokinetics of Midostaurin in Patients With Diabetes Mellitus”. J Clin Pharmacol 48 (6): 763–775. doi:10.1177/0091270008318006PMID 18508951.
    3.  Ryan KS (2008). “Structural studies of rebeccamycin, staurosporine, and violacein biosynthetic enzymes”Ph.D. Thesis. Massachusetts Institute of Technology.

Bioorg Med Chem Lett 1994, 4(3): 399

US 5093330

EP 0657164

EP 0711556

EP 0733358

WO 1998007415

WO 2002076432

WO 2003024420

WO 2003037347

WO 2004112794

WO 2005027910

WO 2005040415

WO 2006024494

WO 2006048296

WO 2006061199

WO 2007017497

WO 2013086133

WO 2012016050

WO 2011000811

8-1-2013
Identification of potent Yes1 kinase inhibitors using a library screening approach.
Bioorganic & medicinal chemistry letters
 
3-1-2013
Evaluation of potential Myt1 kinase inhibitors by TR-FRET based binding assay.
European journal of medicinal chemistry
2-23-2012
Testing the promiscuity of commercial kinase inhibitors against the AGC kinase group using a split-luciferase screen.
Journal of medicinal chemistry
 
1-26-2012
VX-322: a novel dual receptor tyrosine kinase inhibitor for the treatment of acute myelogenous leukemia.
Journal of medicinal chemistry
1-1-2012
H2O2 production downstream of FLT3 is mediated by p22phox in the endoplasmic reticulum and is required for STAT5 signalling.
PloS one
10-27-2011
Discovery of 3-(2,6-dichloro-3,5-dimethoxy-phenyl)-1-{6-[4-(4-ethyl-piperazin-1-yl)-phenylamino]-pyrimidin-4-yl}-1-methyl-urea (NVP-BGJ398), a potent and selective inhibitor of the fibroblast growth factor receptor family of receptor tyrosine kinase.
Journal of medicinal chemistry
 
6-1-2011
Discovery, synthesis, and investigation of the antitumor activity of novel piperazinylpyrimidine derivatives.
European journal of medicinal chemistry
3-1-2010
Colony stimulating factor-1 receptor as a target for small molecule inhibitors.
Bioorganic & medicinal chemistry
7-18-2012
Staurosporine Derivatives as Inhibitors of FLT3 Receptor Tyrosine Kinase Activity
6-13-2012
Crystal form of N-benzoyl-staurosporine
12-14-2011
COMPOSITIONS FOR TREATMENT OF SYSTEMIC MASTOCYTOSIS
7-6-2011
Staurosporine derivatives as inhibitors of flt3 receptor tyrosine kinase activity
7-6-2011
Staurosporine Derivatives for Use in Alveolar Rhabdomyosarcoma
12-10-2010
Pharmaceutical Compositions for treating wouds and related methods
11-5-2010
COMBINATIONS OF JAK INHIBITORS
7-23-2010
COMBINATIONS COMPRISING STAUROSPORINES
3-5-2010
COMBINATION OF IAP INHIBITORS AND FLT3 INHIBITORS
1-29-2010
ANTI-CANCER PHOSPHONATE ANALOGS
1-13-2010
Therapeutic phosphonate compounds
11-20-2009
Use of Staurosporine Derivatives for the Treatment of Multiple Myeloma
7-17-2009
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6-19-2009
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3-20-2009
Use of Midostaurin for Treating Gastrointestinal Stromal Tumors
11-21-2008
PHARMACEUTICAL COMPOSITIONS COMPRISING A POORLY WATER-SOLUBLE ACTIVE INGREDIENT, A SURFACTANT AND A WATER-SOLUBLE POLYMER
11-19-2008
Anti-cancer phosphonate analogs
9-12-2008
Multi-Functional Small Molecules as Anti-Proliferative Agents
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Sensitization of Drug-Resistant Lung Caners to Protein Kinase Inhibitors
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4-25-2008
Treatment Of Gastrointestinal Stromal Tumors With Imatinib And Midostaurin
12-28-2007
Pharmaceutical Uses of Staurosporine Derivatives
12-7-2007
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8-17-2007
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10-13-2006
Staurosporine derivatives for hypereosinophilic syndrome
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MIDOSTAURIN HYDRATE

Midostaurin according to the invention is N-[(9S,10R,11R,13R)-2,3,10,11,12,13-hexahydro-10-methoxy-9-methyl-1-oxo-9,13-epoxy-1H,9H-diindolo[1,2,3-gh:3′,2′,1′-lm]pyrrolo[3,4-j][1,7]benzodiazonin-11-yl]-N-methylbenzamide of the formula (II):

Figure US20090075972A1-20090319-C00002

or a salt thereof, hereinafter: “Compound of formula II or midostaurin”.

Compound of formula II or midostaurin [International Nonproprietary Name] is also known as PKC412.

Midostaurin is a derivative of the naturally occurring alkaloid staurosporine, and has been specifically described in the European patent No. 0 296 110 published on Dec. 21, 1988, as well as in U.S. Pat. No.  5093330 published on Mar. 3, 1992, and Japanese Patent No. 2 708 047.

………………….

https://www.google.co.in/patents/EP0296110B1

The nomenclature of the products is, on the complete structure of staurosporine ([storage]-NH-CH ₃derived, and which is designated by N-substituent on the nitrogen of the methylamino group

Figure imgb0028

Example 18:

     N-Benzoyl-staurospor

  • A solution of 116.5 mg (0.25 mmol) of staurosporine and 0.065 ml (0.38 mmol) of N, N-diisopropylethylamine in 2 ml of chloroform is added at room temperature with 0.035 ml (0.3 mmol) of benzoyl chloride and 10 stirred minutes.The reaction mixture is diluted with chloroform, washed with sodium bicarbonate, dried over magnesium sulfate and evaporated. The crude product is chromatographed on silica gel (eluent methylene chloride / ethanol 30:1), mp 235-247 ° with brown coloration.
  • cut paste may not be ok below

Staurosporine the formula [storage]-NH-CH ₃ (II) (for the meaning of the rest of [storage] see above) as the basic material of the novel compounds was already in 1977, from the cultures of Streptomyces staurosporeus AWAYA, and TAKAHASHI

O ¯

Figure imgb0003

MURA, sp. nov. AM 2282, see Omura, S., Iwai, Y., Hirano, A., Nakagawa, A.; awayâ, J., Tsuchiya, H., Takahashi, Y., and Masuma, R. J. Antibiot. 30, 275-281 (1977) isolated and tested for antimicrobial activity. It was also found here that the compound against yeast-like fungi and microorganisms is effective (MIC of about 3-25 mcg / ml), taking as the hydrochloride = having a LD ₅ ₀ 6.6 mg / kg (mouse, intraperitoneal). Stagnated recently it has been shown in extensive screening, see Tamaoki, T., Nomoto, H., Takahashi, I., Kato, Y, Morimoto, M. and Tomita, F.: Biochem. and Biophys. Research Commun. 135 (No. 2), 397-402 (1986) that the compound exerts a potent inhibitory effect on protein kinase C (rat brain)

…………………

https://www.google.co.in/patents/US5093330

EXAMPLE 18 N-benzoyl-staurosporine

0.035 ml (0.3 mmol) of benzoyl chloride is added at room temperature to a solution of 116.5 mg (0.25 mmol) of staurosporine and 0.065 ml (0.38 mmol) of N,N-diisopropylethylamine in 2 ml of chloroform and the whole is stirred for 10 minutes. The reaction mixture is diluted with chloroform, washed with sodium bicarbonate solution, dried over magnesium sulphate and concentrated by evaporation. The crude product is chromatographed on silica gel (eluant:methylene chloride/ethanol 30:1); m.p. 235

…………………….

Bioorg Med Chem Lett 1994, 4(3): 399

http://www.sciencedirect.com/science/article/pii/0960894X94800049

Full-size image (2 K)

……………………

http://www.google.com/patents/WO1998007415A2

A variety of PKC inhibitors are available in the art for use in the invention. These include bryostatin (U.S. Patent 4,560,774), safinogel (WO 9617603), fasudil (EP 187371), 7- hydoxystaurosporin (EP 137632B), various diones described in EP 657458, EP 657411 and WO9535294, phenylmethyl hexanamides as described in WO9517888, various indane containing benzamides as described in WO9530640, various pyrrolo [3,4-c]carbazoles as described in EP 695755, LY 333531 (IMSworld R & D Focus 960722, July 22, 1996 and Pharmaprojects Accession No. 24174), SPC-104065 (Pharmaprojects Accession No. 22568), P-10050 (Pharmaprojects Accession No. 22643), No. 4432 (Pharmaprojects Accession No. 23031), No. 4503 (Pharmaprojects Accession No. 23252), No. 4721 (Pharmaprojects Accession No. 23890), No. 4755 (Pharmaprojects Accession No. 24035), balanol (Pharmaprojects Accession No. 20376), K-7259 (Pharmaprojects Accession No. 16649), Protein kinase C inhib, Lilly (Pharmaprojects Accession No. 18006), and UCN-01 (Pharmaprojects Accession No. 11915). Also see, for example, Tamaoki and Nakano (1990) Biotechnology 8:732-735; Posada et al. (1989) Cancer Commun. 1:285-292; Sato et al. (1990) Biochem Biophys. Res. Commun. 173:1252-1257; Utz et al. (1994) Int. J. Cancer 57:104-110; Schwartz et al. (1993) J. Na . Cancer lnst. 85:402-407; Meyer et al. (1989) Int. J. Cancer 43:851-856; Akinaga et al. (1991) Cancer Res. 51:4888-4892, which disclosures are herein incorporated by reference. Additionally, antisense molecules can be used as PKC inhibitors. Although such antisense molecules inhibit mRNA translation into the PKC protein, such antisense molecules are considered PKC inhibitors for purposes of this invention. Such antisense molecules against PKC inhibitors include those described in published PCT patent applications WO 93/19203, WO 95/03833 and WO 95/02069, herein incorporated by reference. Such inhibitors can be used in formulations for local delivery to prevent cellular proliferation. Such inhibitors find particular use in local delivery for preventing rumor growth and restenosis.

N-benzoyl staurosporine is a benzoyl derivative of the naturally occurring alkaloid staurosporine. It is chiral compound ([a]D=+148.0+-2.0°) with the formula C35H30R1O4 (molecular weight 570.65). It is a pale yellow amorphous powder which remains unchanged up to 220°C. The compound is very lipophilic (log P>5.48) and almost insoluble in water (0.068 mg/1) but dissolves readily in DMSO.

……………………….

staurosporine

Staurosporine (antibiotic AM-2282 or STS) is a natural product originally isolated in 1977 from the bacterium Streptomyces staurosporeus. It was the first of over 50 alkaloids to be isolated with this type of bis-indole chemical structure. The chemical structure of staurosporine was elucidated by X-ray analysis of a single crystal and the absolute stereochemical configuration by the same method in 1994.

Staurosporine was discovered to have biological activities ranging from anti-fungal to anti-hypertensive. The interest in these activities resulted in a large investigative effort in chemistry and biology and the discovery of the potential for anti-cancer treatment

Synthesis of Staurosporine

Staurosporine is the precursor of the novel protein kinase inhibitor midostaurin(PKC412). Besides midostaurin, staurosporine is also used as a starting material in the commercial synthesis of K252c (also called staurosporine aglycone). In the natural biosynthetic pathway, K252c is a precursor of staurosporine.

Indolocarbazoles belong to the alkaloid sub-class of bisindoles. Of these carbazoles the Indolo(2,3-a)carbazoles are the most frequently isolated; the most common subgroup of the Indolo(2,3-a)carbazoles are the Indolo(2,3-a)pyrrole(3,4-c)carbazoles which can be divided into two major classes – halogenated (chlorinated) with a fully oxidized C-7 carbon with only one indole nitrogen containing a β-glycosidic bond and the second class consists of both indole nitrogen glycosilated, non-halogenated, and a fully reduced C-7 carbon. Staurosporine is part of the second non-halogenated class.

The biosynthesis of staurosporine starts with the amino acid L-tryptophan in its zwitterionic form. Tryptophan is converted to an imineby enzyme StaO which is an L-amino acid oxidase (that may be FAD dependent). The imine is acted upon by StaD to form an uncharacterized intermediate proposed to be the dimerization product between 2 imine molecules. Chromopyrrolic acid is the molecule formed from this intermediate after the loss of VioE (used in the biosynthesis of violacein – a natural product formed from a branch point in this pathway that also diverges to form rebeccamycin. An aryl aryl coupling thought to be catalyzed by a cytochrome P450enzyme to form an aromatic ring system occurs

Staurosporine 2

This is followed by a nucleophilic attack between the indole nitrogens resulting in cyclization and then decarboxylation assisted by StaC exclusively forming staurosporine aglycone or K252c. Glucose is transformed to NTP-L-ristoamine by StaA/B/E/J/I/K which is then added on to the staurosporine aglycone at 1 indole N by StaG. The StaN enzyme reorients the sugar by attaching it to the 2nd indole nitrogen into an unfavored conformation to form intermediated O-demethyl-N-demethyl-staurosporine. Lastly, O-methylation of the 4’amine by StaMA and N-methylation of the 3′-hydroxy by StaMB leads to the formation of staurosporine

US4107297 * 28 Nov 1977 15 Aug 1978 The Kitasato Institute Antibiotic compound
US4735939 * 27 Feb 1987 5 Apr 1988 The Dow Chemical Company Insecticidal activity of staurosporine
ZA884238A * Title not available
////////FDA 2017, acute myeloid leukemia, Rydapt, midostaurin, Novartis Pharmaceuticals Corporation, LeukoStrat CDx FLT3 Mutation Assay,  Invivoscribe Technologies Inc, Priority Review, Fast Track, (for the mastocytosis indication, Breakthrough Therapy
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