Abstract
The associations of the X-ray repair cross complementing group 1 (XRCC1) gene single nucleotide polymorphisms (SNPs) Arg194Trp, Arg280His, Arg399Gln with the risk of gliomas have been studied recently, but contradictions exist whether the XRCC1 SNPs were a risk factor. We examined these associations by performing a meta-analyse. Nine studies tested the associations between XRCC1 SNPs and gliomas were retrieved. Overall odds ratios (ORs) and corresponding 95 % confidence intervals were estimated using genetic models. Heterogeneity and publication bias were evaluated. The pooled OR for Arg194Trp TT versus CC were significant, which was 2.208 (95 % CI: 1.099, 4.435; P = 0.026), but it was non-significant after removal of the studies which deviated from the Hardy–Weinberg equilibrium (HWE). The pooled OR for Arg399Gln AA+GA versus GG of genotype methods subgroup and the low study appraisal score subgroup were significant in the stratification analysis, but the meta-regression results were non-significance. No significant associations were found between the Arg280His SNPs and gliomas’ risk. There was no evidence of publication bias. We conclude that SNPs in XRCC1 are not associated with the risk of gliomas. We should do more work on the relevant variants like those in TERT, RTEL1, EGFR, CDKN2A, CCDC26, and PHLDB1 and their products rather than the XRCC1. More GWAS will also need to involve sufficiently larger study populations along with analysis of tumor or gender subtypes in order to assess these risks.
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Abbreviations
- ADP:
-
Poly-adenosine diphosphate-ribose polymerase
- ADPRT:
-
Adenosine diphosphate ribosyl transferase
- BER:
-
Base excision repair
- CI:
-
Confidence interval
- GWAS:
-
Genome-wide association study
- HWE:
-
Hardy–Weinberg equilibrium
- OR:
-
Odds ratios
- PCR:
-
Polymerase chain reaction
- RFLP:
-
Restriction fragment length polymorphism
- SNPs:
-
Single nucleotide polymorphisms
- XPD:
-
Eroderma pigmentosum complementary group D
- XRCC1:
-
X-ray repair cross complementing 1 gene
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Acknowledgments
We would like to express our great gratitude to Professor Ali Khonsary, Department of Veterans Affairs Medical Center, West Los Angeles, U.S.A, for his helpful edition and critically comments.
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Research reported in this article received no funding and We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the review of the manuscript.
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Li, M., Zhou, Q., Tu, C. et al. A meta-analysis of an association between the XRCC1 polymorphisms and gliomas risk. J Neurooncol 111, 221–228 (2013). https://doi.org/10.1007/s11060-012-1022-1
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DOI: https://doi.org/10.1007/s11060-012-1022-1