GSTM1 and myelodysplastic syndrome: The recommended cytopenia thresholds for defining MDS are hemoglobin (Hb) < 100 g/L, absolute neutrophil count (ANC) < 1.8 × 109/L, and platelet count < 100 × 109/L [6], but it is important to consider that blood counts above these thresholds do not exclude MDS [7].