Overall survival according to overexpression of FLT3. Overall survival according to the overexpression of FLT3 in all AML cases (A) and in 91 AML cases without FLT3/ITD (B) are indicated. In the total cases, overexpression of the FLT3 transcript tended to indicate a worse prognosis, although not significantly. However, it was a poor prognostic factor within the cases without FLT3/ITD. Statistical difference was evaluated using the log-rank test.