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We read with great interest the paper (Ji et al., 2012). The author conducted a meta-analysis of eight case– control studies (3,892 cancer cases and 4,287 controls) to estimate the association of Ala499Val and Lys939Gln polymorphisms in XPC gene with skin cancer. His meta-analysis suggested no significant differences for association of Ala499Val and Lys939Gln polymorphisms with skin cancer. It is a valuable study. Nevertheless, careful examination of the data provided by the author (Table 1 in the original text) revealed an issue that is worth noticing. There is one data is inconsistent with the original study (Blankenburg et al., 2005). The original text never referred to Lys939Gln polymorphism. However, another site Arg492His (exon 8) was used as Lys939Gln for data analysis. LETTER to the EDITOR

Note of Clarification of Data in the Meta-analysis of XPC 939A>C and 499C>T Polymorphisms in Skin Cancer