GSTM1 and hyperuricemia: Routine blood tests revealed renal insufficiency (serum creatinine [Scr], 257 μmol/L; CCR 10.8 mL/min), hyperuricemia (serum uric acid 589.5 μmol/L, urine uric acid excretion 6.9%), and anemia (Hb 85 g/L).