GSTP1 and hepatocellular carcinoma: In the younger group, aged ≤ 57 years, individuals with AG or GG alleles of GSTP1 had a 2.18-fold risk (95% CI: 1.09-4.36, p = 0.02) and 5.64-fold risk (95% CI: 1.02-31.18, p = 0.04), respectively, of developing HCC compared to individuals with AA alleles, after adjustment for other confounders, but no association was found in the older group, aged > 57 years (Table 2).