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Stroke. 2016 Feb;47(2):307-16. doi: 10.1161/STROKEAHA.115.011328. Epub 2016 Jan 5.

Genome-Wide Association Analysis of Young-Onset Stroke Identifies a Locus on Chromosome 10q25 Near HABP2.

Author information

1
From the Veterans Affairs Maryland Health Care System, Baltimore, MD (Y.-C.C., S.J.K., J.W.C., B.D.M.); University of Maryland School of Medicine, Baltimore (Y.-C.C., H.X., S.J.K., J.W.C., J.R.O., B.D.M.); The University of Gothenburg, Gothenburg, Sweden (T.M.S., C.J.); University of Rostock, Rostock, Germany (A.-K.G., A. Rolfs); University of Nottingham Malaysia Campus, Selangor Darul Ehsa, Malaysia (W.K.H.); University of Cambridge, Cambridge, UK (M.T., J.D., S.B., H.S.M., S.D., D.S.); Institut Pasteur de Lille, F-59000 Lille, France (P.A.); University of Newcastle, Australia (E.G.H.); Ludwig-Maximilians-Universität, Munich, Germany (R.M., K.S., M.D.); Wellcome Trust Sanger Institute, Cambridge, UK (J.D.); Center for Non-Communicable Diseases, Karachi, Pakistan (A. Rasheed, D.S.); University of Pennsylvania (W.Z., D.S.); Basel University Hospital, Switzerland (S.E.); Heidelberg University Hospital, Germany (C.G.-G.); Centre d'Étude du Polymorphisme Humain, Paris, France (Y.K.); RIKEN Center for Integrative Medical Sciences, Yokohama, Japan (Y.K.); National Genotyping Center, Evry, France (M.L.); Genome Quebec, McGill University, Montreal, Canada (M.L.); Lille University Hospital, France (D.L., S.D.); KU Leuven - University of Leuven, Leuven, Belgium (V.T.); Vesalius Research Center, VIB, Leuven, Belgium (V.T.); University Hospitals Leuven, Leuven, Belgium (V.T.); Helsinki University Central Hospital, Helsinki, Finland (T.M.M., T.T.); Università degli Studi di Brescia, Brescia, Italy (A. Pezzini); Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy (E.A.P., G.B.B.); University of Lund, Sweden (B.N.); University of Oxford, John Radcliffe Hospital (P.M.R.); University of Edinburgh, Edinburgh, UK (C.S.); Jagiellonian University Medical College, Krakow, Poland (A.S.); Lund University, Lund, Sweden (A.L.); Skåne University Hospital, Lund, Sweden (A.L.); University of Glasgow, Glasgow, UK (M.R.W.); University of Adelaide, Australia (J.J.); Mount Sinai Hos

Abstract

BACKGROUND AND PURPOSE:

Although a genetic contribution to ischemic stroke is well recognized, only a handful of stroke loci have been identified by large-scale genetic association studies to date. Hypothesizing that genetic effects might be stronger for early- versus late-onset stroke, we conducted a 2-stage meta-analysis of genome-wide association studies, focusing on stroke cases with an age of onset <60 years.

METHODS:

The discovery stage of our genome-wide association studies included 4505 cases and 21 968 controls of European, South-Asian, and African ancestry, drawn from 6 studies. In Stage 2, we selected the lead genetic variants at loci with association P<5×10(-6) and performed in silico association analyses in an independent sample of ≤1003 cases and 7745 controls.

RESULTS:

One stroke susceptibility locus at 10q25 reached genome-wide significance in the combined analysis of all samples from the discovery and follow-up stages (rs11196288; odds ratio =1.41; P=9.5×10(-9)). The associated locus is in an intergenic region between TCF7L2 and HABP2. In a further analysis in an independent sample, we found that 2 single nucleotide polymorphisms in high linkage disequilibrium with rs11196288 were significantly associated with total plasma factor VII-activating protease levels, a product of HABP2.

CONCLUSIONS:

HABP2, which encodes an extracellular serine protease involved in coagulation, fibrinolysis, and inflammatory pathways, may be a genetic susceptibility locus for early-onset stroke.

KEYWORDS:

factor VII; genetics; genome-wide analysis; ischemic stroke; stroke

PMID:
26732560
PMCID:
PMC4729659
DOI:
10.1161/STROKEAHA.115.011328
[Indexed for MEDLINE]
Free PMC Article

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