In Fig. 1, the full line indicated the estimated risk of incident recurrence, and the vacant lines represented a point-wise 95% confidence interval, adjusted for age, sex, smoking, HCC family history, operation time, lymphovascular invasion, allogeneic blood, HB, AST, ALP, HBsAg, tumor number, tumor size, AFP. This evidence concerns the gene GSTM1 and hepatocellular carcinoma.