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  • Title: Assessment of the association between XRCC1 Arg399Gln polymorphism and glioma susceptibility.
    Author: Zhu W, Yao J, Li Y, Xu B.
    Journal: Tumour Biol; 2014 Apr; 35(4):3061-6. PubMed ID: 24258108.
    Abstract:
    The Arg399Gln polymorphism, located in the region of the BRCT-I interaction domain of XRCC1, has been extensively explored in its function and association with glioma risk. However, these studies generated contradictory instead of conclusive results. A meta-analysis was performed to derive a more precise evaluation of the relationship between XRCC1 Arg399Gln polymorphism and glioma risk. We searched the PubMed, EMBASE, and Web of Science and extracted 12 eligible studies with 4,062 glioma cases and 5,302 glioma-free controls for this meta-analysis. The pooled odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the strength of the association. In the overall analysis, we found that the XRCC1 Arg399Gln polymorphism was statistically associated with the risk of glioma (OR(GG vs. AG + AA) = 0.90, 95% CI = 0.84-0.97, P(heterogeneity) = 0.020; OR(allele G vs. allele A )= 0.96, 95% CI = 0.91-1.00, P(heterogeneity) = 0.110). We also observed significant association between this polymorphism and glioma risk in Asian populations. The results of the meta-analysis suggest a potential decreased susceptibility to glioma in association with the XRCC1 Arg399Gln polymorphism, especially in Asians. Yet, it is necessary to conduct future prospective explorations to gain a better insight into the impact of XRCC1 Arg399Gln polymorphism on glioma risk.
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