Stratification analysis for associations between ERCC1 and ERCC2 SNPs and overall survival in gastric cancer patients.

*P values were adjusted for age, sex, race, smoking status, alcohol use, stage, histological grade, histological type and treatment in the cox model.†The combined three variant homozygous genotypes were ERCC1 rs3212986 TT, ERCC2 rs13181 GG and rs1799793 AA.(Numbers in bold represent statistically significant findings).