Dynamin2 mutations in newly diagnosed acute myeloid leukemia: clinical characteristics, and prognostic significance.

Abstract

Acute myeloid leukemia (AML) is a highly heterogeneous myeloid malignancy which can be classified by genetic aberrations. To evaluate the impact of the dynamin 2 mutation in AML, we systematically assessed the characteristics and prognostic of DNM2 mutated patients in AML. In 912 AML patients, 20 somatic mutations in the DNM2 gene were identified among the 18 DNM2 mutated AML patients (2%). Of the mutation events, 60% (12/20) were in the dynamin central region of DNM2. DNM2mutations were preferentially occurred in AML with CEBPA mutation (11/18, 61.1%), or RUNX1::RUNX1T1 fusion gene (6/18, 33.3%). DNM2 mutations were associated with better overall survival (P = 0.028), event-free survival (P = 0.0093) and trends towards better relapse-free survival (P = 0.08), which seems potentially attribute to its coexisting with CEBPA mutation and RUNX1::RUNX1T1 fusion gene. Our study demonstrated the clinical characteristics and the role of DNM2 mutations in AML, which might facilitate understanding the pathogenesis of AML.