Upfront intensive treatment analysis of the Italian Cohort Study on FLT3-mutated AML patients (FLAM): The impact of a FLT3 inhibitor addition to standard chemotherapy in the real-life setting.
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BACKGROUND: The addition of a FLT3 inhibitor (FLT3i) to standard chemotherapy to treat fit newly diagnosed (ND) patients with FLT3-mutated acute myeloid leukemia (AML) represents the standard of care resulting from clinical trial results. However, evidence regarding FLT3i adoption in routine clinical practice is still scarce. METHODS: Clinical data are reported from 394 ND patients with FLT3-mutated AML enrolled in the retrospective observational Italian Cohort Study on FLT3-mutated patients with AML and treated with an upfront intensive regimen with (FLT3i group, n = 92) or without (CT group, n = 302) the addition of a FLT3i. RESULTS: With a median follow-up time of 34.5 months, an effectiveness benefit obtained by FLT3i incorporation both in terms of overall survival (median, 34.9 in the FLT3i vs 12.7 months in the CT group, p < .01) and relapse-free survival (median, 18.9 in the FLT3i vs 7.6 months in the CT group, p = .01) was documented, with a higher composite complete remission rate (75.4% in the FLT3i vs 62.4% in the CT group, p = .052). FLT3i benefit seemed to be independent from the transplant rate. CONCLUSIONS: In conclusion, the benefit of FLT3i addition to upfront intensive treatment in newly diagnosed FLT3-mutated AML patients was confirmed in a large, real-life cohort study.