Blood tests and a complete blood count revealed trilinear pancytopenia with severe neutropenia (0.6 × 103/mm3), lymphopenia (1.17 × 103/mm3), thrombocytopenia (115 × 103/mm3) and anemia (Hb 7.1 g/dL, RBC 3.48 × 103/mm3, Hct 21.2%, RDW-CV 23.4%, RDW-SD 51.6 fL). Here, GSTM1 is linked to anemia (phenotype).