BRCA2 Variants and cardiovascular disease in a multi-ethnic study

BMC Medical Genetics

Research Article

Robin Young¹  John Danesh¹  Danish Saleheen²  James C Engert³  Mahyar Heydarpour⁴  Kevin Zbuk⁵  Guillaume Pare⁶  Changchun Xie⁷  Salim Yusuf⁷  Sonia S Anand⁸  Matthew B Lanktree⁹  Robert A Hegele⁹  A Darlene Davis^1,10  Ruby Miller^1,10 

[1] Department of Public Health and Primary Care, Cambridge University, Cambridge, UK;Department of Public Health and Primary Care, Cambridge University, Cambridge, UK;Center for Non-Communicable Diseases, Karachi, Pakistan;Department of Biostatistics and Epidemiology and Department of Medicine, University of Pennsylvania, Karachi, Pakistan;Departments of Medicine and Human Genetics, McGill University, Montreal, QC, Canada;Population Health Research Institute, Hamilton Health Sciences, Hamilton, ON, Canada;Population Health Research Institute, Hamilton Health Sciences, Hamilton, ON, Canada;Department of Oncology, McMaster University, Hamilton, ON, Canada;Population Health Research Institute, Hamilton Health Sciences, Hamilton, ON, Canada;Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada;Population Health Research Institute, Hamilton Health Sciences, Hamilton, ON, Canada;Departments of Medicine and Epidemiology, McMaster University, Hamilton, ON, Canada;Population Health Research Institute, Hamilton Health Sciences, Hamilton, ON, Canada;Departments of Medicine and Epidemiology, McMaster University, Hamilton, ON, Canada;Population Health Research Institute, McMaster University Hamilton General Hospital Campus, DB-CVSRI, 237 Barton Street East, Rm. C3102, L8L 2X2, Hamilton, ON, Canada;Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada;Six Nations Health Services, Ohsweken, ON, Canada;

关键词: Myocardial Infarction;    Aboriginal People;    Male Breast Cancer;    Wellcome Trust Case Control Consortium;    Share Study;   

DOI  :  10.1186/1471-2350-13-56

 received in 2011-09-29, accepted in 2012-07-18,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundGermline mutations of BRCA1/2 are associated with hereditary breast and ovarian cancer. Recent data suggests excess mortality in mutation carriers beyond that conferred by neoplasia, and recent in vivo and in vitro studies suggest a modulatory role for BRCA proteins in endothelial and cardiomyocyte function. We therefore tested the association of BRCA2 variants with clinical cardiovascular disease (CVD).MethodsUsing data from 1,170 individuals included in two multi-ethnic population-based studies (SHARE and SHARE-AP), the association between BRCA2 variants and CVD was evaluated. 15 SNPs in BRCA2 with minor allele frequencies (MAF) > 0.01 had been previously genotyped using the cardiovascular gene-centric 50 k SNP array. 115 individuals (9.8%) reported a CVD event, defined as myocardial infarction (MI), angina, silent MI, stroke, and angioplasty or coronary artery bypass surgery. Analyses were adjusted for age and sex. The SNPs rs11571836 and rs1799943 were subsequently genotyped using the MassARRAY platform in 1,045 cases of incident MI and 1,135 controls from the South Asian subset of an international case-control study of acute MI (INTERHEART), and rs11571836 was imputed in 4,686 cases and 4500 controls from the Pakistan Risk of Myocardial Infarction Study (PROMIS).ResultsTwo BRCA2 SNPs, rs11571836 and rs1799943, both located in untranslated regions, were associated with lower risk of CVD (OR 0.47 p = 0.01 and OR 0.56 p = 0.03 respectively) in the SHARE studies. Analysis by specific ethnicities demonstrated an association with CVD for both SNPs in Aboriginal People, and for rs11571836 only in South Asians. No association was observed in the European and Chinese subgroups. A non-significant trend towards an association between rs11571836 and lower risk of MI was observed in South Asians from INTERHEART [OR = 0.87 (95% CI: 0.75-1.01) p = 0.068], but was not evident in PROMIS [OR = 0.96 (95% CI: 0.90-1.03) p = 0.230]. Meta-analysis of both case-control studies resulted in a combined OR of 0.94 (95% CI: 0.89-1.004, p = 0.06).ConclusionsAlthough there was an association between two SNPs in BRCA2 and CVD in a multi-ethnic population, these results were not replicated in two South Asian case-control studies of incident MI. Future studies exploring the association between BRCA variants and cardiovascular disorders are needed to clarify the role, if any, for BRCA variants in CVD pathogenesis.

【 授权许可】

Unknown   
© Zbuk et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.