Hematologic abnormalities included mild, normocytic anemia (Hb 119 g/L; RI: 131–205 g/L) and discrepancies in mean corpuscular volume (MCV 73.7 fL; RI: 61.6–73.5) and mean corpuscular hemoglobin concentration (MCHC 260 g/L; RI: 320–379). The gene discussed is GSTM1; the disease is anemia.