Therapeutic Response

FLT3-ITD status confers therapeutic sensitivity to Gilteritinib in patients with Acute Myeloid Leukemia.

Statements

Source and description
Gilteritinib Therapy. NCCP National SACT Regimen. HSE. The Republic of Ireland's Health Service Executive (HSE) has approved gilteritinib as a treatment option for the treatment of adult patients who have relapsed or refractory acute myeloid leukaemia (AML) with a FLT3 mutation. In the event that patients re-initiate gilteritinib post haematopoietic stem cell transplant (HSCT) as maintenance therapy, gilteritinib treatment should be restricted to patients who are minimal residual disease (MRD)-positive post-transplant.
Xospata (gilteritinib) [product information]. EMA. The European Medicines Agency (EMA) has authorized gilteritinib for the treatment of adult patients with relapsed or refractory acute myeloid leukemia (AML) with a FLT3 mutation. Gilteritinib's product information states that, before taking gilteritinib, relapsed or refactory AML patients must have confirmation of FMS-like tyrosine kinase 3 (FLT3) mutation (internal tandem duplication [ITD] or tyrosine kinase domain [TKD]) using a validated test. The product information describes the mechanism of action for gilteritinib as inhibiting FLT3 receptor signaling and proliferation in cells exogenously expressing FLT3 including FLT3-ITD, FLT3-D835Y, and FLT3-ITD-D835Y, and that it induces apoptosis in leukemic cells expressing FLT3-ITD.