ERCC2 and gastric cancer: When gastric cancer was classified into non-cardia (or distal) and cardia subtypes, a statistically significant finding was found among non-cardia type but not among cardia type for XPD Lys751Gln polymorphism on the grounds that the pooled ORs (95% CIs, p value) were 2.03 (1.16–3.54, p = 0.013) among non-cardia type and 0.88 (0.66–1.18, p = 0.403) among cardia type.