Some novel features of IDH1-mutated acute myeloid leukemia revealed in Chinese patients

Mutations of isocitrate dehydrogenase 1 (IDH1) have recently been reported in acute myeloid leukemia (AML). However, the characteristics of IDH1-mutated AML are still not known clearly. We analyzed 416 Chinese AML patients and found 28 patients (6.7%) carried this mutation. One homozygous IDH1 mutant in AML was found. The IDH1 mutations were associated with NPM1 mutations (P = 0.043) and could coexist with recurrent transcription factor aberrations including AML1-ETO (6/50), PML-RARα (3/77) and CBFβ-MYH11 (1/15). For AML with AML1-ETO fusion gene, IDH1mut patients may have worse disease-free survival (DFS) than IDH1wild-type patients.