Blood test revealed a normocytic normochromic anemia (Hb 8.4 g/dL (>12), VCM 75 fL (70–115), HCM 27 pg (23–35), with normal leucocytes, thrombocytes and reticulocytes), metabolic hypochloremic alkalosis (pH 7.51 (7.35-7.45), pCO2 35 mmHg (27–40), HCO3- 29.3 mmol/L (16–24), Cl- 85 mmol/L (95–106)), renal failure with disproportionately higher urea than creatinine (creatinine 1.01 mg/dL (0.35–0.5), urea, 159 mg/dL (20–48), estimated creatinine clearance of 42 mL/min/1.73 m2 (>60)) and hyperuricemia (uric acid 11 mg/dL (2.2–7)). Here, GSTM1 is linked to anemia (phenotype).