GSTM1 and acute myeloid leukemia: There was no significant difference in median age, gender distribution, presence of MRF, frequency of therapy-related AML, median peripheral blood blasts, Eastern Cooperative Oncology Group performance status (ECOG PS), IPSS cytogenetic risk group, red blood cell (RBC) and platelet (PLT) transfusion dependence (TD), median haemoglobin (Hb) levels and PLT, white blood cell (WBC) or absolute neutrophil count (ANC) (Table 1).