Gene Mapping for Quantitative Traits

This study has been completed.

Sponsor:

Information provided by:

National Heart, Lung, and Blood Institute (NHLBI)

ClinicalTrials.gov Identifier:

NCT00005535

First received: May 25, 2000

Last updated: June 23, 2005

Last verified: October 2002

History of Changes

Purpose

To conduct gene mapping studies for quantitative traits.

Condition
Cardiovascular Diseases Heart Diseases

Study Type:	Observational
Study Design:	Observational Model: Natural History

Resource links provided by NLM:

MedlinePlus related topics: Heart Diseases

U.S. FDA Resources

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date:	September 1995
Estimated Study Completion Date:	August 2000

Detailed Description:

DESIGN NARRATIVE:

The study built upon existing sib-pair methods for multipoint mapping of Quantitative Trait Loci (QTL)s. It greatly expanded upon the statistical methodology to identify and localize QTLs for complex traits by merging sib-pair methods with a powerful twin design which used phenotypic data on monozygotic (identical) and dizygotic (fraternal) twins to resolve phenotypic variability into genetic and non-genetic components, and partition human quantitative genetic variation into effects due to loci on specific chromosomal regions. This quantitative methodology was applied to risk factors for cardiovascular disease -- one of the most pressing health problems in Western society. Population-based samples of Dutch, Swedish, and Australian twins had been identified in previous studies, phenotypic measures on lipids, lipoproteins, and other important cardiovascular risk factors had been obtained, and blood had been banked in a valuable resource which was available for use in this study. In 500 DZ twin pairs, a series of 175 highly polymorphic microsatellite markers were detected using an automated process for detecting fluorescent signals. These data were analyzed using the new statistical methods both to confirm the effects of a series of candidate loci and to test for the effects of previously unknown QTLs.

Eligibility

Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

No eligibility criteria

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00005535

Sponsors and Collaborators

National Heart, Lung, and Blood Institute (NHLBI)

Investigators

Investigator:

George Vogler

Penn State University

More Information

Publications:

Nelson TL, Vogler GP, Pedersen NL, Miles TP. Genetic and environmental influences on waist-to-hip ratio and waist circumference in an older Swedish twin population. Int J Obes Relat Metab Disord. 1999 May;23(5):449-55.

Vogler GP, Tang W, Nelson TL, Hofer SM, Grant JD, Tarantino LM, Fernandez JR. A multivariate model for the analysis of sibship covariance structure using marker information and multiple quantitative traits. Genet Epidemiol. 1997;14(6):921-6.

McClearn GE, Vogler GP. Genetics and behavioral medicine: the error of the error term. Behav Med. 1997 Winter;22(4):150-1. No abstract available.

Vogler GP, McClearn GE, Snieder H, Boomsma DI, Palmer R, de Knijff P, Slagboom PE. Genetics and behavioral medicine: risk factors for cardiovascular disease. Behav Med. 1997 Winter;22(4):141-9. Review.

Beekman M, Lakenberg N, Cherny SS, de Knijff P, Kluft CC, van Ommen GJ, Vogler GP, Frants RR, Boomsma DI, Slagboom PE. A powerful and rapid approach to human genome scanning using small quantities of genomic DNA. Genet Res. 2001 Apr;77(2):129-34.

Beekman M, Heijmans BT, Martin NG, Pedersen NL, Whitfield JB, DeFaire U, van Baal GC, Snieder H, Vogler GP, Slagboom PE, Boomsma DI. Heritabilities of apolipoprotein and lipid levels in three countries. Twin Res. 2002 Apr;5(2):87-97.

ClinicalTrials.gov Identifier:	NCT00005535 History of Changes
Other Study ID Numbers:	5068
Study First Received:	May 25, 2000
Last Updated:	June 23, 2005
Health Authority:	United States: Federal Government

Additional relevant MeSH terms:

Cardiovascular Diseases
Heart Diseases

ClinicalTrials.gov processed this record on May 21, 2013

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