GSTM1 and Pancytopenia: At diagnosis, 11 patients had pancytopenia, and 15 bicytopenia of whom four had neutropenia (<1,500 neutrophils/μl) and thrombocytopenia (<150,000 platelets/μl), nine had anemia (Hb < 10.0 g/dl) and thrombocytopenia, and two had anemia and neutropenia (Table 2).