XRCC1 and coronary artery disorder: Similarly, pooled analysis found evidence of association between the XRCC1 Arg399Gln polymorphism and CAD susceptibility in recessive (AA vs. GA + GG: OR = 1.45, 95% CI = 1.12–1.89), homozygous (AA vs. GG: OR = 1.56, 95% CI = 1.19–2.05), and allele (A vs. G: OR = 1.18, 95% CI = 1.06–1.32) genetic models, but no evidence of association was identified under dominant and heterozygous models of inheritance (Table 2; Fig 3).