Objective:To explore the clinical implications of CD13 expression level and the mutation of FLT3-ITD and NPM1 gene in72 acute myeloid leukemia(AML)patients. Methods:Clinical features(blood routine and CR rate)of 72 AML patients were collected.The CD13 expression level was analyzed by flow cytometry and the mutations of FLT3-ITD and NPM1 were detected by polymerase chain reaction(PCR) as well as Sanger sequencing. Results:Totally 68(94.44%) out of 72 AML cases had CD13 expression in leukemia cells;44(64.71%)...