Preoperative abnormalities: Hypoalbuminemia (Alb < 35 g/L; n = 39, 19.0%), anemia (Hb < 100 g/L; n = 51, 24.9%), elevated DBIL (>6 μmol/L; n = 24, 12.0%). The gene discussed is GSTM1; the disease is anemia.