Therapeutic Response

FLT3 p.D835Y status confers therapeutic sensitivity to Gilteritinib in patients with Acute Myeloid Leukemia.

Statements

Source and description
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.
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.