The genotype frequency distribution analysis showed a statistically significant difference in genotypes of ERCC1 rs11615 in terms of tumor differentiation (p = 0.039), XPC rs2228000 in terms of vascular invasion (p = 0.045), ERCC1 rs3212986 and XPA rs10817938 in terms of lymphatic invasion (p = 0.046 and 0.033, respectively), XPC rs2228001 in terms of pathologic TNM stage (p = 0.039), and ERCC5 rs17655 in terms of DFS (p = 0.049) (Table S1). Here, XPC is linked to neoplasm.