... the integrity of the genome [15 ,16 ]. The enzyme excision repair cross-complementa-tiongroup1(ERCC1)playsaratelimitingroleinthenucleotide excision repair pathway, and its expression has been ... withadvanced-stage gastric, ovarian, c olorectal, esophageal, and non-small-cell lung cancers [15 ,17 ,19 - 21] . However,there are only few studies to elucidate the relationshipbetween ERCC1 expression and ... found to be involvedin betel nut-related HNSCC [26,27]. However, the rela-tionship between betel nut and ERCC1 expressio n hasnot been reported before. In this study, we find tissuesamples from...