GSTM1 and anemia: A percentage of 22.5% of patients presented with leukocytosis ≥ 25 × 109/L in the combination group, whereas moderate or severe anemia (Hb < 10 g/dL) and thrombocytopenia (<100 × 109/L) were present in 87.5% and 62.5% of patients at diagnosis, respectively.