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| Tracking Information | |||||
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| First Received Date ICMJE | September 30, 2002 | ||||
| Last Updated Date | July 23, 2008 | ||||
| Start Date ICMJE | August 2002 | ||||
| Primary Completion Date | July 2008 (final data collection date for primary outcome measure) | ||||
| Current Primary Outcome Measures ICMJE | |||||
| Original Primary Outcome Measures ICMJE | |||||
| Change History | Complete list of historical versions of study NCT00046605 on ClinicalTrials.gov Archive Site | ||||
| Current Secondary Outcome Measures ICMJE | |||||
| Original Secondary Outcome Measures ICMJE | |||||
| Descriptive Information | |||||
| Brief Title ICMJE | Inflammation Genomics and Atherosclerosis - Ancillary to CARDIA | ||||
| Official Title ICMJE | |||||
| Brief Summary | To examine the associations of common variation in inflammation/thrombosis genes with intermediate quantitative phenotypes and subclinical coronary atherosclerosis in the Coronary Artery Risk Factor Development in Young Adults (CARDIA) Study, a large, bi-racial cohort study. |
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| Detailed Description | BACKGROUND: Atherosclerosis is a major determinant of coronary heart disease and is determined by the interplay of genetic and environmental risk factors. Although atherosclerosis tends to aggregate in families, it does not exhibit classical Mendelian segregation. Thus, the genes that determine an individual's risk of atherosclerosis likely involve multiple sites within genes and interactions between genes, all of which define a genetic risk that is modified by the host environment. DESIGN NARRATIVE: The genetic epidemiology study examines the associations of common variation in inflammation/thrombosis genes with intermediate quantitative phenotypes and subclinical coronary atherosclerosis in the Coronary Artery Risk Factor Development in Young Adults (CARDIA) Study, a large, bi-racial cohort study. The set of 25 candidate genes involve pathways (cytokines, chemokines, and their receptors; cellular adhesion molecules; and, coagulation proteins) and include several receptor-ligand pairs. Using cladistic analysis and the resources of the Program in Genomic Applications (PGA), the investigators will identify a limited set of single nucleotide polymorphisms (range 3-10 SNPs per gene) that characterize common haplotypes in these candidate genes within persons of African descent and European descent. DNA from the CARDIA Year 10 examination (n = 3,950 subjects) will be genotyped for the selected variants that characterize the common haplotypes. Data on the presence of common variants and haplotypes will be incorporated into the CARDIA Study database. Levels of two important intermediate phenotypes, fibrinogen and C-reactive protein (CRP) were previously determined. Non-invasive assessment of coronary atherosclerosis, defined as the presence of coronary artery calcification (CAC), was obtained on CARDIA participants at the Year 15 exam. Analyses will be stratified by race/ethnicity and focus on the associations of the common haplotypes with fibrinogen, CRP, and CAC measured in early adult life. Secondarily, the investigators will explore possible gene-gene and gene-environment interactions. The proposed multi-disciplinary collaboration should enhance the sensitivity and specificity of efforts to assess the associations of common variation in sets of inflammation/thrombosis candidate genes and cardiovascular risk in young adults. |
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| Study Phase | N/A | ||||
| Study Type ICMJE | Observational | ||||
| Study Design ICMJE | |||||
| Condition ICMJE |
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| Intervention ICMJE | |||||
| Study Arms / Comparison Groups | |||||
| Publications * | Carlson CS, Aldred SF, Lee PK, Tracy RP, Schwartz SM, Rieder M, Liu K, Williams OD, Iribarren C, Lewis EC, Fornage M, Boerwinkle E, Gross M, Jaquish C, Nickerson DA, Myers RM, Siscovick DS, Reiner AP. Polymorphisms within the C-Reactive Protein (CRP) Promoter Region Are Associated with Plasma CRP Levels. Am J Hum Genet. 2005 Jul;77(1):64-77. Epub 2005 May 16. | ||||
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* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline. |
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| Recruitment Information | |||||
| Recruitment Status ICMJE | Completed | ||||
| Enrollment ICMJE | |||||
| Completion Date | July 2008 | ||||
| Primary Completion Date | July 2008 (final data collection date for primary outcome measure) | ||||
| Eligibility Criteria ICMJE | No eligibility criteria |
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| Gender | |||||
| Ages | |||||
| Accepts Healthy Volunteers | No | ||||
| Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | ||||
| Location Countries ICMJE | |||||
| Administrative Information | |||||
| NCT ID ICMJE | NCT00046605 | ||||
| Responsible Party | |||||
| Study ID Numbers ICMJE | 1186 | ||||
| Study Sponsor ICMJE | National Heart, Lung, and Blood Institute (NHLBI) | ||||
| Collaborators ICMJE | |||||
| Investigators ICMJE |
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| Information Provided By | National Heart, Lung, and Blood Institute (NHLBI) | ||||
| Verification Date | July 2008 | ||||
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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