FLT3 and acute myeloid leukemia: Although FLT3-ITD was more frequently observed in non-biCEBPA mutated AML patients (6), the contribution of FLT3-ITD to risk stratification warrants further investigation because two of the FLT3-ITD patients receiving the consolidation chemotherapy relapsed (LFS, 20.0 months and 16.1 months respectively) eventually.