ERCC5 and neoplasm: XPG expression levels were also significantly correlated with drinking (P = 0.031) (75.0%), depth of tumour invasion (pT stage, P = 0.012), macroscopic type (P = 0.032) (Table 4), H. pylori infection status (P = 0.039) and family history of cancer (P = 0.019) (Table S1).