ERCC6 and gastric cancer: Among the SNPs from our group investigated during our candidate gene association study, ERCC6 single-locus showed a weak effect for gastric cancer risk (OR = 1.46) [16]; the three PGC single-locus demonstrated a weak protective effect for atrophic gastritis risk (OR for rs4711690 = 0.75; OR for rs6458238 = 0.73; OR for rs9471643 = 0.69) [4].