CClinicalTrials.gg
CompletedNCT00108940SWISSUpdated Sep 27, 2011

Siblings With Ischemic Stroke Study

An observational study in Stroke, sponsored by Mayo Clinic. Completed at 32 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2011-09-27.

Sponsored by Mayo Clinic · Observational

Study type
Observational
Model
Family-based
Time perspective
Prospective
Enrollment
900
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to find the genes that increase the risk of developing an ischemic stroke using DNA samples collected from concordant (stroke-affected) sibling pairs.

Read the detailed description

Stroke is the third leading cause of death in the United States and a leading cause of acquired disability in adults. Each year, about 700,000 people experience stroke in the country. Ischemic stroke, which constitutes about 80 percent of all strokes, is a complex genetic disorder--the result of interactions between multiple genes and multiple environmental exposures. Genes affecting cholesterol, blood pressure, clotting, and other factors may increase the risk of ischemic stroke.

In this clinical study, investigators are studying groups of siblings in which at least two of the siblings have had an ischemic stroke. The goal of this multi-center study is to find the genes that increase the risk of developing an ischemic stroke.

To accomplish the aims of the study, researchers are using DNA samples collected from concordant (stroke-affected) sibling pairs to determine if there are regions in the human genome associated with ischemic stroke or that may harbor stroke susceptibility genes.

Two teaspoons of blood will be collected from each participant and submitted for genetic analysis. Understanding the genetic predisposition to stroke could have major benefits for public health.

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Conditions studied

  • Stroke

Keywords

  • stroke
  • ischemic stroke
  • siblings
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In context

Stroke

7,283 studies on the registry are indexed under Stroke; 2,013 are open to participants now.

This study's planned enrollment of 900 is above the median of 160 across 1,692 observational studies indexed under Stroke.

Browse Stroke studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,217 studies on the registry; 669 are open to participants now.

Of its 445 completed or terminated interventional studies of FDA-regulated products, 313 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

in-patient or out-patient clinics, local community

Inclusion criteria

  • Subject diagnosed by a study neurologist as having had a symptomatic ischemic stroke in the past.
  • Head Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) done within 7 days of symptom onset confirms absence of etiology other than ischemic stroke.
  • Subject reports having at least one living sibling with a stroke.
  • Subject is 18 years of age or older.

Exclusion criteria

Exclusion Criteria:

  • The index ischemic stroke occurred within 48 hours after a cardiovascular or cerebrovascular procedure.
  • The index ischemic stroke occurred within 60 days after a non-traumatic subarachnoid hemorrhage.
  • The subject has brain biopsy-proven central nervous system vasculitis.
  • The subject is known to have any one of the following genetic disorders: CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy), Fabry's disease, homocystinuria, MELAS (Mitochondrial myopathy, Encephalopathy, Lactic Acidosis, Stroke), or sickle cell anemia.
  • The subject has a mechanical aortic valve or mechanical mitral valve.
  • The subject had untreated or actively treated bacterial endocarditis at the time of the index ischemic stroke.
05

Study design

Observational model
Family-based
Time perspective
Prospective
Enrollment
900 participants (estimated)
Biospecimen retention
Samples with dna
06

Study locations

32 sites
  • University of South Alabama
    Mobile, Alabama 36617, United States
  • Mayo Clinic Arizona
    Scottsdale, Arizona 85054, United States
  • East Bay Region Assoc.
    Berkeley, California 94705, United States
  • Scripps Clinic
    La Jolla, California 92039, United States
  • University of California, Davis
    Sacramento, California 95817, United States
  • Mercy General Hospital
    Sacramento, California 95819, United States
  • Shands Jacksonville
    Jacksonville, Florida 32209, United States
  • Mayo Clinic College of Medicine Jacksonville
    Jacksonville, Florida 32224, United States
  • Florida Neurovascular Institute
    Tampa, Florida 33606, United States
  • Cleveland Clinic - Florida
    Weston, Florida 33331, United States
  • OSF St. Francis Medical Center
    Peoria, Illinois 61637, United States
  • Indiana University/Clarian Health Partners
    Indianapolis, Indiana 46202, United States
  • Mercy Medical Center
    Sioux City, Iowa 51101, United States
  • University of Maryland
    Baltimore, Maryland 21201, United States
  • Mayo Clinic
    Rochester, Minnesota 55905, United States
  • Washington University School of Medicine
    St. Louis, Missouri 63110, United States
  • Rochester General Hospital
    Rochester, New York, United States
  • Helen Hayes Hospital
    West Haverstraw, New York 10994, United States
  • Wake Forest University School of Medicine
    Winston-Salem, North Carolina 27157, United States
  • University of Cincinnati
    Cincinnati, Ohio 45267-0525, United States
  • Metro Health
    Cleveland, Ohio 44109, United States
  • Ohio State University
    Columbus, Ohio 43210, United States
  • University of Penn. Med. Center
    Philadelphia, Pennsylvania 19104, United States
  • Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania 19107, United States
  • Vanderbilt University Medical Center
    Nashville, Tennessee 37232, United States
  • University of Virginia
    Charlottesville, Virginia 22908, United States
  • St. Mary's Medical Center
    Huntington, West Virginia 25702, United States
  • Luther Midelfort Clinic
    Eau Claire, Wisconsin 54703, United States
  • University of Wisconsin, Madison
    Madison, Wisconsin 53792, United States
  • Froedtert Memorial Lutheran
    Milwaukee, Wisconsin 53226, United States
  • Hospital Charles Le Moyne
    Greenfield Park, Quebec J4V2H1, Canada
  • L'Enfant-Jesus Hospital
    Quebec City, Quebec, Canada
07

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 27, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00108940
Lead sponsor
Mayo Clinic
Collaborators
National Institute of Neurological Disorders and Stroke (NINDS)
First posted
Apr 21, 2005
Start date
Dec 2000
Primary completion
Jun 2009
Completion
Jun 2011
Last update
Sep 27, 2011

Study contacts

James F. Meschia, M.D.
principal investigator · Mayo Clinic

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2011. You cannot join it, but the record below documents what was studied.

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