Diet, Genetics, and CVD Risk Factor Response in Blacks

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. Identifier: NCT00079703
Recruitment Status : Completed
First Posted : March 15, 2004
Last Update Posted : July 29, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To test the hypothesis that the responsiveness of major and emerging cardiovascular disease risk factors to changes in diet composition clusters within families depending on genetic susceptibility factors.

Condition or disease
Cardiovascular Diseases Heart Diseases

Detailed Description:


Reduction in risk of cardiovascular disease (CVD) through dietary change has considerable potential for a beneficial impact on public health. On a population basis, moderation of both lipid profiles and blood pressure can be accomplished readily with a prudent diet. Nevertheless, individual response to dietary impact on CVD risk factors varies widely, presumably as a result of genetic differences. In particular, Blacks who constitute a subpopulation with documented increased risk of morbidity and mortality from CVD would disproportionately benefit from interventions designed to maximize the impact of dietary change tailored to individual genetic makeup. Therefore, study of the influence of diet on CVD risk factors, along with enhanced understanding of the genetic components involved, would greatly potentiate chronic disease interventions.

The study is conducted in response to a Request for Applications issued in October, 2001 on the Interaction of Genes and the Environment in Shaping Risk Factors for Heart, Lung, Blood, and Sleep Disorders.


Two-generational family lines will be identified in Blacks with elevated low density lipoprotein-C (LDLC) in probands. The population will be fed a controlled diet contrasting an established heart healthy regimen with a typical American one. Concomitant rigorous genetic, anthropometric, and behavioral evaluation will provide data with which to analyze individual differences in response to consistent dietary intake. In Specific Aim 1, Black, two-generational, families will be recruited and provided interventional diets designed to reduce (or not) LDL-C and blood pressure. In Specific Aim 2, non-genetic predictors of CVD risk factor response will be identified through extensive assessments of baseline behavioral characteristics, anthropometric features, and metabolic factors. In Specific Aim 3, the underlying genetic factors that predispose to response (or the lack of) to dietary interventions will be identified through the examination of polymorphisms in candidate genes and the identification of susceptibility loci by linkage analyses. In Specific Aim 4, interactions between diet, CVD risk factor response and genetic factors will be dissected through measures of potential mediating metabolic pathways.

Study Type : Observational
Study Start Date : September 2002
Actual Primary Completion Date : August 2007
Actual Study Completion Date : August 2007

Information from the National Library of Medicine

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

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 identifier (NCT number): NCT00079703

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Michael LeFevre LSU Pennington Biomedical Research Center Identifier: NCT00079703     History of Changes
Other Study ID Numbers: 1245
U01HL072510 ( U.S. NIH Grant/Contract )
First Posted: March 15, 2004    Key Record Dates
Last Update Posted: July 29, 2016
Last Verified: January 2008

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases