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
Open accessAbstract
Purpose: Mutations leading to constitutive activation of the FMS-like tyrosine kinase 3 receptor (FLT3) occur in blasts of 30% of patients with acute myeloid leukemia (AML). Midostaurin (PKC412; N-benzoylstaurosporin) is a multitargeted tyrosine kinase inhibitor, with demonstrated activity in patients with AML/myelodysplastic syndrome (MDS) with FLT3 mutations. Patients and Methods: Ninety-five patients with AML or MDS with either wild-type (n = 60) or mutated (n = 35) FLT3 were randomly assigned to receive oral midostaurin at 50 or 100 mg twice daily. The drug was discontinued in the absence of response at 2 months, disease progression, or unacceptable toxicity. Response was defined as complete response, partial response (PR), hematologic improvement, or reduction in peripheral blood or bone marrow blasts by ≥ 50% (BR). Results: The rate of BR for the population in whom efficacy could be assessed (n = 92) was 71% in patients with FLT3-mutant and 42% in patients with FLT3 wild-type. One PR occurred in a patient with FLT3-mutant receiving the 100-mg dose regimen. Both doses were well-tolerated; there were no differences in toxicity or response rate according to the dose of midostaurin. Conclusion: These results suggest that midostaurin has hematologic activity in both patients with FLT3-mutant and wild-type. The degree of clinical activity observed supports additional studies that combine midostaurin and other agents such as chemotherapy especially in FLT3-mutant AML.
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In a newly diagnosed FLT3-mutated acute myeloid leukemia patient sample, midostaurin showed no significant change in mass accumulation rate distribution compared with a DMSO control.
“Cells in midostaurin showed no significant change in their distribution of MAR as compared to a DMSO control, consistent with the limited activity of single-agent midostaurin in FLT3-mutated AML27.”
From Drug sensitivity of single cancer cells is predicted by changes in mass accumulation rate (2016) · cites this paper as [27]
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- Authors
- 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.
- Affiliations
- Memorial Sloan Kettering Cancer Center (US)
- ORCID
- Venue
- Journal of Clinical Oncology
- Published
- 2010-10-01
- Volume
- 28
- Issue
- 28
- Pages
- 4339-4345
- ISSN
- 0732-183X (ISSN-L)
- 1527-7755
- PMC
- PMC4135183
- OpenAlex
- W2154625299
- Cited by
- 504
- References
- 26
- Citations by year
- 2026: 7 · 2025: 16 · 2024: 20 · 2023: 31 · 2022: 35 · 2021: 35 · 2020: 44 · 2019: 44 · 2018: 29 · 2017: 48 · 2016: 21 · 2015: 41 · 2014: 45 · 2013: 30 · 2012: 36
- FWCI
- 17.63
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Clinical Oncology (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Celgene
- National Cancer Institute (P01CA066996)
- Topics
- Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinoids in leukemia and cellular processes
- Health Sciences › Medicine › Hematology › Chronic Myeloid Leukemia Treatments
- Keywords
- midostaurin, FLT3 mutation, acute myeloid leukemia, myelodysplastic syndrome, tyrosine kinase inhibitors, hematologic response, dose comparison, drug toxicity, combination chemotherapy
- MeSH terms
- Administration, Oral, Aged, Antineoplastic Agents, Female, Humans, Male, Mutation, Myelodysplastic Syndromes, Leukemia, Myeloid, Acute, Treatment Outcome, Staurosporine, Receptor Protein-Tyrosine Kinases, fms-Like Tyrosine Kinase 3
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