GSTP1 and chronic atrophic gastritis: Compared with the wild-type Ile/Ile genotype, the variant Ile/Val + Val/Val genotypes of GSTP1 Ile105Val gene polymorphism were significantly associated with a decreased risk of gastric atrophy/intestinal metaplasia (adjusted OR = 0.60, 95% CI: [0.37, 0.98]) after adjusting for age and sex.