We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov Menu

Genetic Epidemiology of CVD Risk Factors

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00053521
Recruitment Status : Completed
First Posted : January 31, 2003
Last Update Posted : November 7, 2016
Information provided by:

Study Description
Brief Summary:
To determine the role of genetic factors influencing risk factors for cardiovascular disease, ultimately identifying specific genes influencing the age-related progression of cardiovascular disease risks.

Condition or disease
Cardiovascular Diseases Heart Diseases

Detailed Description:


Understanding the genetic basis of common multifactorial diseases such as cardiovascular disease (CVD) remains an elusive goal, but the great advances in molecular genetic technology, statistical genetic methods, and phenotypic assessment of CVD risk factors in recent years have facilitated more sophisticated genetic studies of risks for heart disease.

The study is a follow-up to one conducted in the 1970's and 1980's. The availability of 5 large kindreds first identified and recruited as part of the "High Blood Pressure in the Young" program is an important resource. The investigators have an extensive array of baseline data that was collected in the late 1970s and early 1980s on 750 participants stemming from that project, although some data are available only on a subset of participants. The present study population centers on 764 individuals in five large, multigenerational, extended families (four white and one African-American) originally examined 25 years ago. Data collected from the original participants include hundreds of biochemical, medical, physiological, behavioral, physical, psychological, genetic and demographic traits.


The study consists of four specific aims: 1) Collect 25-year follow-up data from approximately 500 of the original participants, and new data from approximately 500 of their relatives not examined in the original study. The cardiovascular disease risk factor phenotypes to be collected include hemodynamic measures, carotid intima-media thickness, and measures of cardiopulmonary function. 2) Obtain DNA samples from these 1,000 individuals and use modern high-throughput molecular genotyping methods to create a 10 cM genetic marker map. 3) Quantify and characterize the nature of genetic influences on CVD risk factors using quantitative genetic methods suited for cross-sectional and serial (follow-up) data from relatives in large extended families. 4) Conduct linkage analyses to identify chromosomal regions (QTLs) harboring genes that influence individual variation in cardiovascular disease risk factors. Following these linkage analyses, the investigators will examine more closely the strongest linkage signals with fine mapping linkage analysis in order to narrow chromosomal regions of interest. The study is a collaboration between Wright State University and the Southwest Foundation for Biomedical Research.

Study Design

Study Type : Observational
Study Start Date : January 2003
Primary Completion Date : November 2007
Study Completion Date : November 2007
Groups and Cohorts

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
No eligibility criteria
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00053521

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Shelley Cole Southwest Foundation for Biomedical Research
OverallOfficial: Roger Siervogel Wright State University
More Information

ClinicalTrials.gov Identifier: NCT00053521     History of Changes
Other Study ID Numbers: 1206
R01HL070167-01 ( U.S. NIH Grant/Contract )
R01HL069995-01 ( U.S. NIH Grant/Contract )
First Posted: January 31, 2003    Key Record Dates
Last Update Posted: November 7, 2016
Last Verified: January 2008

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases