Abstract
Objective
Xeroderma pigmentosum complementation group C (XPC) participates in the initial recognition of DNA damage during nucleotide excision repair process in global genomic repair. Our meta-analysis was performed to evaluate the association between three polymorphisms (Lys939Gln, PAT+/- and Ala499Val) of XPC gene and risk of digestive system cancers.
Methods
All the relevant case-control studies published to April 2011 were identified through searching PubMed. Digestive system cancer risk with the three polymorphisms was estimated for each study by odds ratio (OR) with its 95% confidence interval (95% CI).
Results
We found an increased overall risk for digestive system cancers in all three models of Lys939Gln A>C (AC/CC vs. AA: OR, 1.20; 95% CI, 1.11–1.30; CC vs. AC/AA: OR, 1.24; 95% CI, 1.11–1.39; CC vs. AA: OR, 1.36; 95% CI, 1.21–1.53). When stratified by ethnicity, results remained significant in Asian population (AC/CC vs. AA: OR, 1.18; 95% CI, 1.02–1.37; CC vs. AC/AA: OR, 1.32; 95% CI, 1.1–1.51; CC vs. AA: OR, 1.35; 95% CI, 1.08–1.70), but not for Caucasians. However for Ala499Val C>T, a significant protective effect of T allele was only observed in the dominant model. Otherwise, no significant results were observed for PAT+/-.
Conclusion
XPC Lys939Gln A>C polymorphism may play an important role in digestive system cancer susceptibility.
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This work was supported by the National Natural Science Foundation of China (No.81072356).
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Jiang, X., Zhou, Lt., Zhang, Sc. et al. XPC polymorphism increases risk of digestive system cancers: Current evidence from a meta-analysis. Chin. J. Cancer Res. 24, 181–189 (2012). https://doi.org/10.1007/s11670-012-0181-0
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DOI: https://doi.org/10.1007/s11670-012-0181-0