XRCC1 and head and neck squamous cell carcinoma: In the three meta‐analyses conducted by Lou et al.,1 Wu et al.,42 and Zhou et al.,43 there were not significant association between XRCC1 Arg194Trp polymorphism and the HNSCC risk under different genetic models; these findings are inconsistent with results of present meta‐analysis; the reason for these inconsistencies can be attributed to the smaller number of studies and the smaller number of cases and controls in their meta‐analysis.