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Common Genetic Variants on Chromosome 9p21 Confers Risk of Ischemic Stroke A Large-Scale Genetic Association Study

Författare

Summary, in English

Background-Epidemiological studies indicate a genetic contribution to ischemic stroke risk, but specific genetic variants remain unknown, with the exception of a few rare variants. Recent genome-wide association studies identified and replicated common genetic variants on chromosome 9p21 to confer risk of coronary heart disease. We examined whether these variants are associated with ischemic stroke. Methods and Results-We genotyped 6 common genetic variants on chromosome 9p21, previously associated with coronary artery disease in genome-wide association studies, in 2 population-based studies in southern Sweden, the Lund Stroke Register (n = 1837 cases, 947 controls) and the Malmo Diet and Cancer study (MDC; n = 888 cases, 893 controls). We examined association in each study and in the pooled dataset. Adjustments were made for cardiovascular risk factors and further for previous myocardial infarction in MDC. We found a modest increase in ischemic stroke risk for 2 common (minor allele frequencies 0.46 to 0.49) variants, rs2383207 (P = 0.04 in Lund Stroke Register, P = 0.01 in MDC) and rs10757274 (P = 0.03 in Lund Stroke Register, P = 0.03 in MDC), in each sample independently. The strength of the association increased when samples were pooled with an odds ratio of 1.15 (95% CI, 1.05 to 1.25; P = 0.002) for the strongest variant rs2383207. Results were similar after adjustment for clinical covariates. rs1333049 also showed significant association in MDC, which increased in the pooled sample (P = 0.004). Conclusions-In this large sample (n = 4565), we detected common genetic determinants for ischemic stroke on chromosome 9p21. Our findings indicate that ischemic stroke shares pathophysiological determinants with coronary heart disease and other arterial diseases and highlight the need for large sample sizes in stroke genetics. (Circ Cardiovasc Genet. 2009; 2: 159-164.)

Publiceringsår

2009

Språk

Engelska

Sidor

159-164

Publikation/Tidskrift/Serie

Circulation: Cardiovascular Genetics

Volym

2

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

American Heart Association

Ämne

  • Cardiac and Cardiovascular Systems

Nyckelord

  • infarction
  • cerebral
  • cardiovascular diseases
  • genetics
  • atherosclerosis
  • stroke

Status

Published

Forskningsgrupp

  • Cardiovascular Research - Hypertension
  • Cardiovascular Research - Epidemiology
  • Internal Medicine - Epidemiology

ISBN/ISSN/Övrigt

  • ISSN: 1942-325X