Initial laboratory studies showed normocytic and normochromic anemia (Hb 10.5 g/dL), mild thrombocytopenia with normal lactate dehydrogenase, serum creatinine of 7.64 mg/dL (ten days before the value was 4 mg/dL), with normal anion-gap metabolic acidosis, C reactive protein of 4.1 mg/dL, and erythrocyte sedimentation rate (ESR) of 100 mm/h. The gene discussed is GSTM1; the disease is anemia (phenotype).