Feasibility of an affected sibling pair study in ischemic stroke: Results of a 2-center family history registry

James F. Meschia, Robert D. Brown, Thomas G. Brott, John Hardy, Elizabeth J. Atkinson, Peter C. O'Brien

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Background and Purpose - We sought to determine pedigree availability for a concordant sibling pair study of genetic risk factors in ischemic stroke. Methods - Probands with confirmed ischemic stroke were prospectively enrolled. Family histories were obtained by systematic interview. A study neurologist prospectively assigned stroke subtype. Results - Of 310 probands (median age, 75 years; range, 26 to 97 years; 48% women), 75% had at least 1 living sibling; 10%, at least 1 concordant living sibling; 2%, at least 1 concordant sibling living in the same city; and 7%, at least 1 concordant living and 1 discordant living sibling. Likelihood of having a concordant sibling increased significantly with proband age, even after adjustment for sibship size (P=0,002), Positive family history of stroke was not related to either proband stroke subtype or risk factor profile. Conclusions - Approximately 10 probands were screened to find 1 potentially concordant living sibling, A concordant sibling pair study should be multicentered and enable enrollment of siblings from diverse geographic areas.

Original languageEnglish (US)
Pages (from-to)2939-2941
Number of pages3
Issue number12
StatePublished - 2001


  • Cerebral infarction
  • Feasibility studies
  • Pedigree research
  • Risk factors, genetic
  • Stroke classification
  • Stroke, ischemic

ASJC Scopus subject areas

  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine
  • Advanced and Specialized Nursing


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