WT1 and acute myeloid leukemia: Also the rate of patients who transformed into AML was higher in those exhibiting a WT1-mRNA overexpression compared to patients with normal pB WT1-mRNA expression (patients with normal WT1-mRNA expression: 2 of 13 patients, 15% vs. WT1-mRNA overexpressing patients: 18 of 37 patients, 48.6%; p = 0.0498).