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Systematic review and meta-analysis of candidate gene association studies of lower urinary tract symptoms in men

Cartwright, Rufus and Mangera, Altaf and Tikkinen, Kari A. O. and Rajan, Prabhakar and Pesonen, Jori and Kirby, Anna C. and Thiagamoorthy, Ganesh and Ambrose, Chris and Gonzalez-Maffe, Juan and Bennett, Phillip R. and Palmer, Tom and Walley, Andrew and Järvelin, Marjo-Riitta and Khullar, Vik and Chapple, Chris (2014) Systematic review and meta-analysis of candidate gene association studies of lower urinary tract symptoms in men. European Urology, 66 (4). pp. 752-768. ISSN 0302-2838

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Abstract

CONTEXT: Although family studies have shown that male lower urinary tract symptoms (LUTS) are highly heritable, no systematic review exists of genetic polymorphisms tested for association with LUTS. OBJECTIVE: To systematically review and meta-analyze studies assessing candidate polymorphisms/genes tested for an association with LUTS, and to assess the strength, consistency, and potential for bias among pooled associations. EVIDENCE ACQUISITION: A systematic search of the PubMed and HuGE databases as well as abstracts of major urologic meetings was performed through to January 2013. Case-control studies reporting genetic associations in men with LUTS were included. Reviewers independently and in duplicate screened titles, abstracts, and full texts to determine eligibility, abstracted data, and assessed the credibility of pooled associations according to the interim Venice criteria. Authors were contacted for clarifications if needed. Meta-analyses were performed for variants assessed in more than two studies. EVIDENCE SYNTHESIS: We identified 74 eligible studies containing data on 70 different genes. A total of 35 meta-analyses were performed with statistical significance in five (ACE, ELAC2, GSTM1, TERT, and VDR). The heterogeneity was high in three of these meta-analyses. The rs731236 variant of the vitamin D receptor had a protective effect for LUTS (odds ratio: 0.64; 95% confidence interval, 0.49-0.83) with moderate heterogeneity (I(2)=27.2%). No evidence for publication bias was identified. Limitations include wide-ranging phenotype definitions for LUTS and limited power in most meta-analyses to detect smaller effect sizes. CONCLUSIONS: Few putative genetic risk variants have been reliably replicated across populations. We found consistent evidence of a reduced risk of LUTS associated with the common rs731236 variant of the vitamin D receptor gene in our meta-analyses. PATIENT SUMMARY: Combining the results from all previous studies of genetic variants that may cause urinary symptoms in men, we found significant variants in five genes. Only one, a variant of the vitamin D receptor, was consistently protective across different populations.

Item Type: Article
Journal or Publication Title: European Urology
Additional Information: Copyright © 2014 The Authors. Published by Elsevier B.V. All rights reserved.
Subjects:
Departments: Faculty of Science and Technology > Mathematics and Statistics
ID Code: 73935
Deposited By: ep_importer_pure
Deposited On: 18 Jun 2015 06:56
Refereed?: Yes
Published?: Published
Last Modified: 23 Oct 2017 04:21
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/73935

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