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- Title
DNA repair gene XRCC3 polymorphisms and cancer risk: a meta-analysis of 48 case–control studies.
- Authors
Shizhong Han; Hong-Tao Zhang; Zhentian Wang; Yi Xie; Tang, Rong; Yumin Mao; Yao Li
- Abstract
The X-ray repair cross-complementing group 3 (XRCC3) is a highly suspected candidate gene for cancer susceptibility. However, association studies on the XRCC3 polymorphisms (4541A>G, Thr241Met, 17893A>G) in cancer have shown conflicting results. Therefore, we performed a meta-analysis to better assess the purported associations. Forty eight eligible case–control studies including 24 975 cancer patients and 34 209 controls were selected for our meta-analysis. Overall, individuals carrying the XRCC3 Met/Met genotype showed a small cancer risk under a recessive genetic model. The subgroup and meta-regression analysis demonstrated different scenarios concerning the XRCC3 Met/Met genotype's role in cancer susceptibility for different subgroups. Specially, there was a significantly increased risk of breast cancer (OR, 1.14; P=0.0004; 95% CI, 1.06–1.23; P=0.37 for heterogeneity), elevated but not significant risk of cancer for head and neck, bladder, surprisingly, a significantly decreased risk of non-melanoma skin cancer (OR, 0.76; P=0.007; 95% CI, 0.62–0.93; P=0.61 for heterogeneity). A significantly elevated risk of cancer was observed in population-based case–control studies but not in nested or hospital based studies. Similarly, we found a significantly increased risk of cancer for A4541G and a decreased risk for A17893G under dominant genetic models. Our meta-analysis results support that the XRCC3 might represent a low-penetrance susceptible gene especially for cancer of breast, bladder, head and neck, and non-melanoma skin cancer. A single larger study should be required to further evaluate gene–gene and gene–environment interactions on XRCC3 polymorphisms and tissue-specific cancer risk in an ethnicity specific population.European Journal of Human Genetics (2006) 14, 1136–1144. doi:10.1038/sj.ejhg.5201681; published online 21 June 2006
- Subjects
GENETIC polymorphisms; DNA repair; GENES; CANCER patients; BREAST cancer; META-analysis
- Publication
European Journal of Human Genetics, 2006, Vol 14, Issue 10, p1136
- ISSN
1018-4813
- Publication type
Article
- DOI
10.1038/sj.ejhg.5201681