TY - JOUR T1 - Shared genetic susceptibility to ischemic stroke and coronary artery disease: a genome-wide analysis of common variants. JF - Stroke Y1 - 2014 A1 - Dichgans, Martin A1 - Malik, Rainer A1 - König, Inke R A1 - Rosand, Jonathan A1 - Clarke, Robert A1 - Gretarsdottir, Solveig A1 - Thorleifsson, Gudmar A1 - Mitchell, Braxton D A1 - Assimes, Themistocles L A1 - Levi, Christopher A1 - O'Donnell, Christopher J A1 - Fornage, Myriam A1 - Thorsteinsdottir, Unnur A1 - Psaty, Bruce M A1 - Hengstenberg, Christian A1 - Seshadri, Sudha A1 - Erdmann, Jeanette A1 - Bis, Joshua C A1 - Peters, Annette A1 - Boncoraglio, Giorgio B A1 - März, Winfried A1 - Meschia, James F A1 - Kathiresan, Sekar A1 - Ikram, M Arfan A1 - McPherson, Ruth A1 - Stefansson, Kari A1 - Sudlow, Cathie A1 - Reilly, Muredach P A1 - Thompson, John R A1 - Sharma, Pankaj A1 - Hopewell, Jemma C A1 - Chambers, John C A1 - Watkins, Hugh A1 - Rothwell, Peter M A1 - Roberts, Robert A1 - Markus, Hugh S A1 - Samani, Nilesh J A1 - Farrall, Martin A1 - Schunkert, Heribert KW - Brain Ischemia KW - Coronary Artery Disease KW - Data Interpretation, Statistical KW - Genetic Predisposition to Disease KW - Genome-Wide Association Study KW - Humans KW - Phenotype KW - Polymorphism, Single Nucleotide KW - Reproducibility of Results KW - Risk Factors KW - Stroke AB -

BACKGROUND AND PURPOSE: Ischemic stroke (IS) and coronary artery disease (CAD) share several risk factors and each has a substantial heritability. We conducted a genome-wide analysis to evaluate the extent of shared genetic determination of the two diseases.

METHODS: Genome-wide association data were obtained from the METASTROKE, Coronary Artery Disease Genome-wide Replication and Meta-analysis (CARDIoGRAM), and Coronary Artery Disease (C4D) Genetics consortia. We first analyzed common variants reaching a nominal threshold of significance (P<0.01) for CAD for their association with IS and vice versa. We then examined specific overlap across phenotypes for variants that reached a high threshold of significance. Finally, we conducted a joint meta-analysis on the combined phenotype of IS or CAD. Corresponding analyses were performed restricted to the 2167 individuals with the ischemic large artery stroke (LAS) subtype.

RESULTS: Common variants associated with CAD at P<0.01 were associated with a significant excess risk for IS and for LAS and vice versa. Among the 42 known genome-wide significant loci for CAD, 3 and 5 loci were significantly associated with IS and LAS, respectively. In the joint meta-analyses, 15 loci passed genome-wide significance (P<5×10(-8)) for the combined phenotype of IS or CAD and 17 loci passed genome-wide significance for LAS or CAD. Because these loci had prior evidence for genome-wide significance for CAD, we specifically analyzed the respective signals for IS and LAS and found evidence for association at chr12q24/SH2B3 (PIS=1.62×10(-7)) and ABO (PIS=2.6×10(-4)), as well as at HDAC9 (PLAS=2.32×10(-12)), 9p21 (PLAS=3.70×10(-6)), RAI1-PEMT-RASD1 (PLAS=2.69×10(-5)), EDNRA (PLAS=7.29×10(-4)), and CYP17A1-CNNM2-NT5C2 (PLAS=4.9×10(-4)).

CONCLUSIONS: Our results demonstrate substantial overlap in the genetic risk of IS and particularly the LAS subtype with CAD.

VL - 45 IS - 1 U1 - http://www.ncbi.nlm.nih.gov/pubmed/24262325?dopt=Abstract ER -