GSTM1 and myeloproliferative neoplasm: In 190 patients with AML-MRC, univariate analysis suggested that LDH (p=0.031) and age (p<0.001) were prognostic factors, while WBC count, Hb, platelet count, history of MDS or MDS/MPN, MDS-related cytogenetic abnormalities, and MLD were not related to prognosis.