GSTM1 and Pancytopenia: The treatment resulted in severe pancytopenia (WBC: 0.75 x 109/L; absolute neutrophil count [ANC]: 0.45 x 109/L; haemoglobin [Hb]: 66 g/L; platelets [PLT]: 28 x 109/L) complicated by miliary tuberculosis four months after dasatinib initiation.