Except for age, HCC status, and MELD score, there were no statistical difference between the two groups for sex, HE grade, ascites amount, EV grade, EVB, SBP, HRS, DM, ESRD, heart failure, serum ammonia, INR, WBC, Hb, PLT, creatinine, bilirubin total, AST/ALT, or albumin. This evidence concerns the gene GSTM1 and hepatocellular carcinoma.