Atherosclerotic vascular disease is a major source of morbidity and mortality. Inflammation plays an important role in atherosclerosis. The tools to systematically study the extent to which genetic variation determines risk of and progression of atherosclerosis are only now becoming available. The general aim of this project is to evaluate the role of genetic variation in inflammatory pathway genes at 29 loci on the risk and progression of carotid artery atherosclerotic disease (CAAD). Genes to be evaluated include those potentially involved in plaque initiation and progression. We will evaluate SNPs informative for the common locus haplotypes. Choice of informative polymorphisms for evaluation is based on the genes' evolutionary history. We will evaluate progression effects in subjects with CAAD followed longitudinally by noninvasive magnetic resonance (MR) techniques over 3 years. Risk will be evaluated by case-control comparisons. In additions to evaluating genetic polymorphisms, we will evaluate the intervening phenotypes of protein level for fibrinogen, C-reactive protein, serum amyloid A, and interleukin-6. Independence of genetic predictors from traditional cardiovascular risk factors will be evaluated. The major specific aims are:
Aim 1. Test for inflammatory genetic effects and protein level in CAAD progression in 550 subjects with CAAD (275 with 15-49% and 275 with 50-79% baseline CAAD stenosis) evaluated by 3-year magnetic resonance image follow-up of percent lumen stenosis;
Aim 2. Determine whether the variation in the inflammatory genes or protein levels predicts 810 case vs. 810 control status with a case distribution of 335 subject with 15-49%, 275 with 50-75% and 200 with >80% carotid artery stenosis at baseline. Age (onset of vascular disease for cases, current age for controls)-, sex-, race-, and hospital-matched controls will have less than 15% stenosis on carotid duplex ultrasound. Genes that are implicated in disease may eventually allow targeted therapy.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
5R01HL074366-02
Application #
6800801
Study Section
Epidemiology and Disease Control Subcommittee 2 (EDC)
Program Officer
Bookman, Ebony B
Project Start
2003-09-15
Project End
2007-08-31
Budget Start
2004-09-01
Budget End
2005-08-31
Support Year
2
Fiscal Year
2004
Total Cost
$704,850
Indirect Cost
Name
University of Washington
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
605799469
City
Seattle
State
WA
Country
United States
Zip Code
98195
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Carty, Cara L; Heagerty, Patrick; Nakayama, Karen et al. (2006) Inflammatory response after influenza vaccination in men with and without carotid artery disease. Arterioscler Thromb Vasc Biol 26:2738-44

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