Publication: Megakaryocytic Expansion in Gilteritinib-Treated Acute Myeloid Leukemia Patients Is Associated With AXL Inhibition
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Issued Date
2020-12-09
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2234943X
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2-s2.0-85098157954
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Mahidol University
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SCOPUS
Bibliographic Citation
Frontiers in Oncology. Vol.10, (2020)
Suggested Citation
Kran Suknuntha, Yoon Jung Choi, Ho Sun Jung, Aditi Majumder, Sujal Shah, Igor Slukvin, Erik A. Ranheim Megakaryocytic Expansion in Gilteritinib-Treated Acute Myeloid Leukemia Patients Is Associated With AXL Inhibition. Frontiers in Oncology. Vol.10, (2020). doi:10.3389/fonc.2020.585151 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/60871
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Title
Megakaryocytic Expansion in Gilteritinib-Treated Acute Myeloid Leukemia Patients Is Associated With AXL Inhibition
Abstract
© Copyright © 2020 Suknuntha, Choi, Jung, Majumder, Shah, Slukvin and Ranheim. Numerous recurrent genetic mutations are known to occur in acute myeloid leukemia (AML). Among these common mutations, Fms-like tyrosine kinase 3 remains as one of the most frequently mutated genes in AML. We observed apparent marrow expansion of megakaryocytes in three out of six patients with Flt3-mutated AML following treatment with a recently FDA-approved Flt3 inhibitor, gilteritinib which possesses activity against internal tandem duplication and tyrosine kinase domain Flt3 mutations and also inhibits tyrosine kinase AXL. To assess whether biopsy findings can be attributed to promotion of megakaryocytic (Mk) differentiation with gilteritinib, we devised a cellular assay by overexpressing double mutated Flt3-ITDY591F/Y919F in chronic myeloid leukemia cell line K562 to study Mk differentiation in the presence of Flt3 and AXL inhibitors with non-mutually exclusive mechanisms. These experiments demonstrated the lack of direct effect Flt3 inhibitors gilteritinib and quizartinib on megakaryocytic differentiation at either transcriptional or phenotypic levels, and highlighted antileukemic effects of AXL receptor tyrosine kinase inhibitor and its potential role in megakaryocytic development.