Abstract

Acute promyelocytic leukemia (APL) represents a subset of AML with t(15;17), responsiveness to ATRA, and a favorable prognosis, yet the impact of FLT3ITD mutations over wild-type (wt)FLT3 remains unclear. We retrospectively analyzed the outcome of 26 APL patients treated at our center according to their FLT3 receptor mutation status. We show that APL patients with an ITD mutation (n = 9) have a lower fibrinogen at presentation (103.5 vs. 235 mg/dl, p = 0.04) and a worse disease free survival (DFS) (p = 0.0114) but similar overall survival (OS) compared to patients with a wt FLT3 (n = 13). Our data suggests that APL with FLT3ITD represents a subset of APL patients who have a higher risk of relapse and should be treated with aggressive therapies upfront, possibly by including targeted therapy in the form of FLT3 inhibitors.

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