Association between 17q25.3-rs6465657 polymorphism and prostate cancer susceptibility: a meta-analysis based on 19 studies
Authors Jiang X, Zhang M, Bai X, Li S, Wu H
Received 21 January 2016
Accepted for publication 24 April 2016
Published 22 July 2016 Volume 2016:9 Pages 4491—4503
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Triparna Sen
Peer reviewer comments 2
Editor who approved publication: Dr William Cho
Xiao Jiang,1,2 Mei Zhang,3 Xiao-Yan Bai,1 Shujing Li,1 Huijian Wu1
1Laboratory of Molecular Medicine & Pharmacy, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People’s Republic of China; 2Department of Gastroenterology, Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, People’s Republic of China; 3Department of Biochemistry and Molecular Biology, Heilongjiang University of Chinese Medicine, Haerbin, People’s Republic of China
Background: Genome-wide association studies have identified rs6465657 polymorphism at chromosome 17q25.3 as a new prostate cancer (PCa) susceptibility locus in people of European descent. However, subsequent replication studies have yielded inconsistent results among different ethnicities. In this study, a comprehensive meta-analysis was conducted to systematically evaluate the relationship between rs6465657 polymorphism and PCa risk.
Methods: All the articles involved were identified from PubMed, EMBASE, Web of Science, EBSCO databases, and Google Scholar before December 2015. The odds ratios (ORs) with corresponding 95% confidence internals (95% CIs) were pooled under the allele model. Fourteen eligible articles with 19 studies were finally included.
Results: In the overall population, the 17q25.3-rs6465657C allele was found to be significantly associated with increased risk of PCa compared to the T allele (OR =1.097; 95% CI: 1.061–1.134; P<0.001). In the subgroup analysis stratified by ethnicity, significantly increased risk was found in the Caucasian population (OR =1.120; 95% CI: 1.078–1.162; P<0.001), while the difference of OR did not reach the statistical significance in the Asian or African-American population. The analyses of sensitivity indicated the robust stability of the results, and the Begg’s and Egger’s test indicated that no publication bias existed.
Conclusion: The current meta-analysis suggested that the 17q25.3-rs6465657 polymorphism could be associated with PCa susceptibility, especially in the Caucasians, while this association might be different in other ethnicities.
Keywords: rs6465657, LMTK2, polymorphism, prostate cancer, risk, meta-analysis
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