ERCC2 and gastric cancer: However, subgroup analysis by ethnicity revealed a positive correlation with clinical response to platinum-based chemotherapy in the Caucasian gastric cancer patients (for AA vs. GG + GA: OR = 1.79, 95% CI = 1.24–2.57, P = 0.002, Figure 3; all the other P values > 0.05, Table 4), but the results showed no associations between the ERCC2 rs1799793 polymorphisms and ORR in Asian patients (P > 0.05, Table 4).