Tan et al found an association between the A allele of rs11615 ERCC1 gene and shorter OS.31 Similar effect was shown by Yang et al and Xu et al. They shown shorter OS in patients with the A allele of rs11615 ERCC1 gene.32, 33 Li et al conducted a study to investigate the gene polymorphisms in the prognosis of gastric cancer. Here, ERCC1 is linked to gastric cancer.