Discovery of imatinib-responsive FIP1L1-PDGFRA mutation during refractory acute myeloid leukemia transformation of chronic myelomonocytic leukemia

Shilpan Shah, Sanam Loghavi, Guillermo Garcia-Manero, Joseph D. Khoury

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The FIP1L1-PDGFRA rearrangement results in constitutive activation of the tyrosine kinase PDGFRA. Neoplasms harboring this rearrangement are responsive to imatinib mesylate at doses much lower than those recommended for the treatment of chronic myelogenous leukemia. Only a single report has described the identification of FIP1L1-PDGFRA in chronic myelomonocytic leukemia (CMML). Herein, we present a case report of a patient in whom the FIP1L1-PDGFRA was discovered as he evolved from CMML to acute myeloid leukemia (AML). The presence of a dominant neoplastic clone with FIP1L1-PDGFRA rearrangement was suspected on the basis of sudden onset of peripheral and bone marrow eosinophilia and confirmed by fluorescence in situ hybridization and molecular diagnostic tests. Whereas the patient was initially refractory to chemotherapy before the rearrangement was detected, subsequent therapy with imatinib led to complete remission.

Original languageEnglish (US)
Article number26
JournalJournal of Hematology and Oncology
Volume7
Issue number1
DOIs
StatePublished - Mar 27 2014

Keywords

  • Chronic myelomonocytic leukemia
  • FIP1L1-PDGRFA
  • Imatinib mesylate

ASJC Scopus subject areas

  • Hematology
  • Molecular Biology
  • Oncology
  • Cancer Research

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