Genetic polymorphisms of xeroderma pigmentosum group D gene Asp312Asn and Lys751Gln and susceptibility to prostate cancer: A systematic review and meta-analysis |
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Authors: | Qingtong Ma Can Qi Chong Tie Zhanjun Guo |
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Institution: | 1. Department of Urology, Tianjin First Central Hospital, Tianjin 300192, China;2. Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin 300211, China;3. Department of Urology, the Second Affiliated Hospital, Xi''an Jiaotong University, Xi''an 710004, China |
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Abstract: | Many studies have reported the role of xeroderma pigmentosum group D (XPD) with prostate cancer risk, but the results remained controversial. To derive a more precise estimation of the relationship, a meta-analysis was performed. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated to assess the association between XPD Asp312Asn and Lys751Gln polymorphisms and prostate cancer risk. A total of 8 studies including 2620 cases and 3225 controls described Asp312Asn genotypes, among which 10 articles involving 3230 cases and 3582 controls described Lys751Gln genotypes and were also involved in this meta-analysis. When all the eligible studies were pooled into this meta-analysis, a significant association between prostate cancer risk and XPD Asp312Asn polymorphism was found. For Asp312Asn polymorphism, in the stratified analysis by ethnicity and source of controls, prostate cancer risk was observed in co-dominant, dominant and recessive models, while no evidence of any associations of XPD Lys751Gln polymorphism with prostate cancer was found in the overall or subgroup analyses. Our meta-analysis supports that the XPD Asp312Asn polymorphism contributed to the risk of prostate cancer from currently available evidence. However, a study with a larger sample size is needed to further evaluate gene–environment interaction on XPD Asp312Asn and Lys751Gln polymorphisms and prostate cancer risk. |
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