As shown in Table 2, univariate survival analysis showed no significant correlation between protein expressed levels of ERCC8 and GC prognosis (P = 0.211), while a significant correlation was observed between ERCC6 protein expressed levels and GC prognosis (P = 0.047, HR =3.416, 95% CI [1.017–11.475]). This evidence concerns the gene ERCC6 and gastric cancer.