ERCC5 and cancer: The XPG rs2296147T>C polymorphism was significantly associated with the PFS of cancer patients (CC+CT vs. TT, HR = 0.70, 95% CI, 0.50-0.98, P = 0.035; T vs. C, HR = 0.50, 95% CI, 0.38-0.66, P <0.001, Table 3).