Complete blood cell count showed normal white blood cell count (6.600/μL) with severe neutropenia (220 cells/μL), monocytosis (3,400 cells/μL), mild anemia (Hb 8.6 g/dl, MCV 78 fl) and thrombocytosis (610 × 109/L). This evidence concerns the gene GSTM1 and anemia (phenotype).