ERCC6 and gastric cancer: And the results suggested that double lower ERCC6 and ERCC8 mRNA expression was not significantly associated with GC prognosis neither in univariate model (P = 0.242; HR = 1.364; 95% CI [0.810–2.297]) nor in multivariate model (P = 0.197; HR = 1.426; 95% CI [0.832 –2.446]).