In Mozaffari et al. and Zhang et al. meta‐analyses on the association of XRCC1 Arg194Trp with oral cancer risk, there were significant increased associations between this polymorphism and oral cancer risk under allelic, heterozygote, and recessive models in Mozaffari et al. meta‐analysis and under dominant model in Zhang et al. met‐analysis.3, 45. This evidence concerns the gene XRCC1 and lip and oral cavity carcinoma.