Siblings With Ischemic Stroke Study Results of a Genome-Wide Scan for Stroke Loci

被引：28

作者：

Meschia, James F. ^{[1
]}

Nalls, Michael ^{[5
]}

Matarin, Mar ^{[12
]}

Brott, Thomas G. ^{[1
]}

Brown, Robert D., Jr. ^{[2
]}

Hardy, John ^{[3
]}

Kissela, Brett ^{[4
]}

Rich, Stephen S. ^{[9
]}

Singleton, Andrew ^{[5
]}

Hernandez, Dena ^{[5
]}

Ferrucci, Luigi ^{[5
]}

Pearce, Kerra ^{[6
,7
]}

Keller, Margaret ^{[8
]}

Worrall, Bradford B. ^{[10
,11
]}

机构：

[1] Mayo Clin, Dept Neurol, Jacksonville, FL 32224 USA

[2] Mayo Clin, Dept Neurol, Rochester, MN USA

[3] UCL, Dept Mol Neurosci, Inst Neurol, London, England

[4] Univ Cincinnati, Dept Neurol, Cincinnati, OH USA

[5] NIA, Bethesda, MD 20892 USA

[6] Univ Coll London Genom, London, England

[7] Inst Child Hlth, London, England

[8] Coriell Inst Med Res, Camden, NJ USA

[9] Univ Virginia, Ctr Publ Hlth Genom, Charlottesville, VA USA

[10] Univ Virginia, Dept Neurol, Charlottesville, VA USA

[11] Univ Virginia, Dept Publ Hlth Sci, Charlottesville, VA USA

[12] UCL Inst Neurol, Dept Clin & Expt Epilepsy, London, England

来源：

STROKE | 2011年 / 42卷 / 10期

基金：

美国国家卫生研究院;

关键词：

cerebral infarct; genetics; ATRIAL-FIBRILLATION; BRAIN INFARCTS; ASSOCIATION; VARIANTS; RISK; CLASSIFICATION; POPULATION; GENETICS;

D O I：

10.1161/STROKEAHA.111.620484

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

100204 [神经病学];

摘要：

Background and Purpose-Ischemic stroke has a strong familial component to risk. The Siblings With Ischemic Stroke Study (SWISS) is a genome-wide, family-based analysis that included use of imputed genotypes. The Siblings With Ischemic Stroke Study was conducted to examine the associations between single-nucleotide polymorphisms (SNPs) and risk of stroke and stroke subtypes within pairs. Methods-The Siblings With Ischemic Stroke Study enrolled 312 probands with ischemic stroke from 70 US and Canadian centers. Affected siblings were ascertained by centers and confirmed by central record review; unaffected siblings were ascertained by telephone contact. Ischemic stroke was subtyped according to Trial of Org 10172 in Acute Stroke Treatment criteria. Genotyping was performed with an Illumina 610 quad array (probands) and an Illumina linkage V array (affected siblings). SNPs were imputed by using 1000 Genomes Project data and MACH software. Family-based association analyses were conducted by using the sibling transmission-disequilibrium test. Results-For all pairs, the correlation of age at stroke within pairs of affected siblings was r = 0.83 (95% CI, 0.78-0.86; P < 2.2 x 10(-16)). The correlation did not differ substantially by subtype. The concordance of stroke subtypes among affected pairs was 33.8% (kappa = 0.13; P = 5.06 x 10(-4)) and did not differ by age at stroke in the proband. Although no SNP achieved genome-wide significance for risk of ischemic stroke, there was clustering of the most associated SNPs on chromosomes 3p (neuronal nitric oxide synthase) and 6p. Conclusions-Stroke subtype and age at stroke in affected sibling pairs exhibit significant clustering. No individual SNP reached genome-wide significance. However, 2 promising candidate loci were identified, including 1 that contains neuronal nitric oxide synthase, although these risk loci warrant further examination in larger sample collections. (Stroke. 2011; 42: 2726-2732.)

引用

页码：2726 / U83

页数：12

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