WT1 and acute myeloid leukemia: The following WT1 mutations were found: frameshift insertion c.1145_1146insTCGG (p.A382fs) in AML#4 (detected only at diagnosis with a MF of 27.6%) and frameshift insertion c.1139_1140insTCTTGTAC (p.R380fs) in AML#3 [detected both at diagnosis (MF 13.9%) and at relapse (MF 4,2%)].