NDLI: Polymorphisms of the XPC gene may contribute to the risk of head and neck cancer: a meta-analysis

Content Provider	Springer Nature Link
Author	Zhang, Yang Li, Zufei Zhong, Qi Zhou, Weiguo Chen, Xuejun Chen, Xiaohong Fang, Jugao Huang, Zhigang
Copyright Year	2013
Abstract	Polymorphisms of the XPC gene have been reported to be associated with an increased risk of head and neck cancer (HNC), though the exact biological effect is still unclear. Genetic association studies (GAS) investigating the associations between three common polymorphisms (PAT, Lys939Gln, and Ala499Val) of the XPC gene and HNC risk have produced contradictory and inconclusive results. The aim of this meta-analysis is to evaluate the contributions of these polymorphisms to the risk of HNC. A literature search was conducted in the PubMed, Embase, Web of Science, Cochrane Library, and China National Knowledge Infrastructure databases to indentify eligible studies. Pooled odds ratios (ORs) and 95 % confidence intervals (95 % CIs) were used to evaluate the strength of the associations under a fixed- or random-effect model according to heterogeneity test. Twelve case-control studies were included in this meta-analysis with a total of 3,078 HNC patients and 4,311 healthy controls. For XPC PAT, a significant overall association was found under all major genetic models. Stratified analyses further indicated significant associations in the Caucasian, population-based, non-PCR-RFLP, esophageal cancer and oral cancer subgroups. For XPC Lys939Gln, few significant results were found in either the overall analysis or stratified analyses. For XPC Ala499Val, the combined results revealed a significantly increased risk of HNC for carriers of the 499Val allele. This meta-analysis shows that the XPC PAT and Ala499Val polymorphisms may be associated with an increased risk of HNC, while XPC Lys939Gln may not be associated with HNC risk. Despite some limitations, this meta-analysis establishes solid statistical evidence for an association between XPC genetic polymorphisms and HNC risk that warrants further validation.
Starting Page	3917
Ending Page	3931
Page Count	15
File Format	PDF
ISSN	10104283
Journal	Tumor Biology
Volume Number	35
Issue Number	4
e-ISSN	14230380
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-12-13
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	XPC Head and neck cancer Polymorphisms Meta-analysis Cancer Research
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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