GSTM1 and hyperuricemia: WBC count was 10.301/mm3 (78% neutrophils), Hb 12.6 g/dl, mean cellular volume 71.9 fl, platelets 413.000/mm3, ferritin 10 ng/ml (n.v. 15–155 ng/ml), ESR 75 mm (< 17), C-reactive protein 1.30 mg/dl (< 0.80) and hyperuricemia (8.0 mg/dl; n.v. < 5.7 mg/dl), total serum protein, liver, kidney, thyroid function tests were normal.