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Clinical Trial: Family Blood Pressure Program - GENOA
This study is no longer recruiting patients.
Purpose
To localize, identify, and evaluate common polymorphic variation in genes involved in determining interindividual differences in blood pressure (BP) levels and essential hypertension status in three racial groups: African-Americans, Mexican-Americans, and Non-Hispanic Whites. The study consists of a six grant network, which in turn is part of an NHLBI initiative, the Family Blood Pressure Program consisting of four networks.
| Condition |
|---|
| Cardiovascular Diseases Heart Diseases Hypertension Coronary Arteriosclerosis |
MedlinePlus related topics: Coronary Disease; Heart Diseases; Heart Diseases--Prevention; High Blood Pressure; Vascular Diseases
Study Type: Observational
Study Design: Natural History
Study start: September 1995; Study completion: June 2005
BACKGROUND: Hypertension, a complex disease involving the interplay of genetic and environmental factors, affects an estimated 50 million Americans and is a major predisposing factor for myocardial infarction, vascular disease, stroke, and renal failure. It has been estimated from segregation analysis and twin studies that approximately 45 percent of the interindividual differences in blood pressure are accounted for by genetic differences. The identification of the genes whose variants contribute to high blood pressure will have far-reaching effects on our understanding of the pathophysiology of the circulation and may suggest new preventive measures and rational therapeutic approaches.
One of the principal advantages of the genetic approach is that it identifies primary molecular defects. As a result, it will be possible to stratify the general hypertensive population into subgroups based on genotype and intermediate phenotype and thereby evaluate preventive strategies and therapeutic approaches in more homogeneous groups. In addition, the identification of hypertensive genes also provides the basis for an understanding of the interactions between genes and environmental factors. It is very likely that particular environmental variables exert their effects only in the presence of certain genotypes.
Until recently, the techniques for dissecting the genetic determinants of high blood pressure were not available or were not developed to an extent that would make the Family Blood Pressure Program initiative feasible. However, several recent advances in technology and analytical methods, together with the rapid construction of genetic maps, have substantially improved the chances of detecting these genetic factors.
The concept for the Family Blood Pressure Program was conceived in the Report of the Expert Panel on Genetic Strategies for Heart, Lung, and Blood Diseases. The initiative was approved by the Arteriosclerosis, Hypertension, and Lipid Metabolism Advisory Committee (AHLMAC) in March, 1993. The genetic-epidemiological aspects were approved by the Clinical Applications and Prevention Advisory Committee (CAPAC) in February, 1993. The Request for Applications was released in March, 1994. Awards were made in September, 1995.
DESIGN NARRATIVE: GENOA, the Genetic Epidemiology Network of Arteriopathy, consists of a network of three field centers and biochemical and genetic core labs to study the common polymorphic genetic variations to determine individual differences in blood pressure and essential hypertension in 1,500 sibling pairs in three racial groups. Linkage analyses are performed using an extensive array of candidate genes and anonymous markers throughout the genome.
Each collaborating investigator is responsible for an essential element of the network: Eric Boerwinkle for genotyping and linkage analyses, Robert Ferrell for genotyping, Craig Hanis for recruiting Mexican-Americans, Richard Hutchinson for recruiting African-Americans, Sharon Kardia for cladistic and prediction analyses and data management, and Stephen Turner for recruiting Non-Hispanic whites and measuring physiologic variables. Between 1995 and 2000, the network carried out five specific aims to localize and characterize the genetic determinants of high blood pressure. Aim 1 used robust sibling pair linkage methods in 500 hypertensive sibling pairs in each racial group (a total of 1,500 sibling pairs) to localize genes influencing interindividual differences in the occurrence of essential hypertension. Aims 2 and 3 took advantage of previously collected blood pressure and intermediate predictor trait data from 1,488 normotensive sibling pairs from the Rochester Family Heart Study to localize genes contributing to essential hypertension. The linkage analyses (Aims 1-3) used both an extensive array of candidate genes and a large number of anonymous markers throughout the genome. Aim 4 used multiple diallelic sequence polymorphisms and cladistic analyses within a linked gene to identify haplotypes for further DNA sequencing in order to identify candidate functional DNA sequence variation contributing to interindividual differences in BP levels and essential hypertension status. Aim 5 evaluated the ability of candidate functional DNA sequence variation to predict essential hypertension status in the three racial groups.
The study was renewed in September 2000 to pursue two lines of investigation. The first is to identify and characterize genes contributing to atherosclerotic coronary heart disease using electron beam computed tomography (EBCT) to quantify coronary artery calcification as a measure of preclinical disease. Robust sibling-pair linkage methods will be used to determine whether any of the more than 375 highly polymorphic tandem repeat marker loci spanning the genome are linked to genes influencing EBCT measures of coronary artery calcification in at least 500 GENOA sibships from Rochester, Minnesota. Association analysis will be used to determine whether biallelic markers of DNA sequence variation in candidate genes identified by GENOA or others to influence blood pressure level or diagnostic category also influence EBCT measures of coronary artery calcification in at least 500 GENOA participants from Rochester, Minnesota. The second line of investigation extends analytical methods (linkage disequilibrium regression and combinatorial partitioning) to more finely localize positional candidate genes and loci, and to identify gene-gene and gene-environment interaction effects influencing the measured Family Blood Pressure Program and GENOA phenotypes.
Eligibility
Genders Eligible for Study: Both
Criteria
Location Information
Eric Boerwinkle, University of Texas
C. Brown, University of Mississippi Medical Center
Robert Ferrell, University of Pittsburgh
Craig Hanis, University of Texas
Sharon Kardia, University of Michigan
Stephen Turner, Mayo Clinic
More Information
Publications
Boerwinkle E, Ellsworth DL, Hallman DM, Biddinger A. Genetic analysis of atherosclerosis: a research paradigm for the common chronic diseases. Hum Mol Genet. 1996;5 Spec No:1405-10. Review.
Boerwinkle E. A contemporary research paradigm for the genetic analysis of a common chronic disease. Ann Med. 1996 Oct;28(5):451-7. Review.
Page GP, Amos CI, Boerwinkle E. The quantitative LOD score: test statistic and sample size for exclusion and linkage of quantitative traits in human sibships. Am J Hum Genet. 1998 Apr;62(4):962-8.
Fornage M, Amos CI, Kardia S, Sing CF, Turner ST, Boerwinkle E. Variation in the region of the angiotensin-converting enzyme gene influences interindividual differences in blood pressure levels in young white males. Circulation. 1998 May 12;97(18):1773-9.
Amos CI, Krushkal J, Thiel TJ, Young A, Zhu DK, Boerwinkle E, de Andrade M. Comparison of model-free linkage mapping strategies for the study of a complex trait. Genet Epidemiol. 1997;14(6):743-8.
Ellsworth DL, Hallman DM, Boerwinkle E. Impact of the Human Genome Project on epidemiologic research. Epidemiol Rev. 1997;19(1):3-13. Review. No abstract available.
Province MA, Boerwinkle E, Chakravarti A, Cooper R, Fornage M, Leppert M, Risch N, Ranade K. Lack of association of the angiotensinogen-6 polymorphism with blood pressure levels in the comprehensive NHLBI Family Blood Pressure Program. National Heart, Lung and Blood Institute. J Hypertens. 2000 Jul;18(7):867-76.
Bray MS, Li L, Turner ST, Kardia SL, Boerwinkle E. Association and linkage analysis of the alpha-adducin gene and blood pressure. Am J Hypertens. 2000 Jun;13(6 Pt 1):699-703.
Boerwinkle E. All for one and one for all: introduction to a coordinated analysis of the Gly-460-Trp alpha-adducin polymorphism. Am J Hypertens. 2000 Jun;13(6 Pt 1):734-5. Review. No abstract available.
Bray MS, Krushkal J, Li L, Ferrell R, Kardia S, Sing CF, Turner ST, Boerwinkle E. Positional genomic analysis identifies the beta(2)-adrenergic receptor gene as a susceptibility locus for human hypertension. Circulation. 2000 Jun 27;101(25):2877-82.
Krushkal J, Ferrell R, Mockrin SC, Turner ST, Sing CF, Boerwinkle E. Genome-wide linkage analyses of systolic blood pressure using highly discordant siblings. Circulation. 1999 Mar 23;99(11):1407-10.
Turner ST, Boerwinkle E. Genetics of hypertension, target-organ complications, and response to therapy. Circulation. 2000 Nov 14;102(20 Suppl 4):IV40-5. Review. No abstract available.
Krushkal J, Xiong M, Ferrell R, Sing CF, Turner ST, Boerwinkle E. Linkage and association of adrenergic and dopamine receptor genes in the distal portion of the long arm of chromosome 5 with systolic blood pressure variation. Hum Mol Genet. 1998 Sep;7(9):1379-83.
Xiong MM, Krushkal J, Boerwinkle E. TDT statistics for mapping quantitative trait loci. Ann Hum Genet. 1998 Sep;62 ( Pt 5):431-52.
Bray MS, Boerwinkle E, Doris PA. High-throughput multiplex SNP genotyping with MALDI-TOF mass spectrometry: practice, problems and promise. Hum Mutat. 2001 Apr;17(4):296-304.
Wu X, Cooper RS, Borecki I, Hanis C, Bray M, Lewis CE, Zhu X, Kan D, Luke A, Curb D. A combined analysis of genomewide linkage scans for body mass index from the National Heart, Lung, and Blood Institute Family Blood Pressure Program. Am J Hum Genet. 2002 May;70(5):1247-56.
Lange LA, Lange EM, Bielak LF, Langefeld CD, Kardia SL, Royston P, Turner ST, Sheedy PF 2nd, Boerwinkle E, Peyser PA. Autosomal genome-wide scan for coronary artery calcification loci in sibships at high risk for hypertension. Arterioscler Thromb Vasc Biol. 2002 Mar 1;22(3):418-23.
Kardia SL, Rozek LS, Krushkal J, Ferrell RE, Turner ST, Hutchinson R, Brown A, Sing CF, Boerwinkle E. Genome-wide linkage analyses for hypertension genes in two ethnically and geographically diverse populations. Am J Hypertens. 2003 Feb;16(2):154-7.
Province MA, Kardia SL, Ranade K, Rao DC, Thiel BA, Cooper RS, Risch N, Turner ST, Cox DR, Hunt SC, Weder AB, Boerwinkle E. A meta-analysis of genome-wide linkage scans for hypertension:The National Heart, Lung and BloodInstitute Family Blood Pressure Program. Am J Hypertens. 2003 Feb;16(2):144-7.
Barkley RA, Brown AC, Hanis CL, Kardia SL, Turner ST, Boerwinkle E. Lack of genetic linkage evidence for a trans-acting factor having a large effect on plasma lipoprotein[a] levels in African Americans. J Lipid Res. 2003 Jul;44(7):1301-5. Epub 2003 May 01.
Morrison AC, Brown A, Kardia SL, Turner ST, Boerwinkle E; Genetic Epidemiology Network of Arteriopathy (GENOA) Study. Evaluating the context-dependent effect of family history of stroke in a genome scan for hypertension. Stroke. 2003 May;34(5):1170-5. Epub 2003 Apr 24.
Kullo IJ, McConnell JP, Bailey KR, Kardia SL, Bielak LF, Peyser PA, Sheedy PF 2nd, Boerwinkle E, Turner ST. Relation of C-reactive protein and fibrinogen to coronary artery calcium in subjects with systemic hypertension. Am J Cardiol. 2003 Jul 1;92(1):56-8. No abstract available.
Turner ST, Jack CR, Fornage M, Mosley TH, Boerwinkle E, de Andrade M. Heritability of leukoaraiosis in hypertensive sibships. Hypertension. 2004 Feb;43(2):483-7. Epub 2004 Jan 12.
Barkley RA, Chakravarti A, Cooper RS, Ellison RC, Hunt SC, Province MA, Turner ST, Weder AB, Boerwinkle E; Family Blood Pressure Program. Positional identification of hypertension susceptibility genes on chromosome 2. Hypertension. 2004 Feb;43(2):477-82. Epub 2004 Jan 19.
Daniels PR, Kardia SL, Hanis CL, Brown CA, Hutchinson R, Boerwinkle E, Turner ST; Genetic Epidemiology Network of Arteriopathy study. Familial aggregation of hypertension treatment and control in the Genetic Epidemiology Network of Arteriopathy (GENOA) study. Am J Med. 2004 May 15;116(10):676-81.
O'Meara JG, Kardia SL, Armon JJ, Brown CA, Boerwinkle E, Turner ST. Ethnic and sex differences in the prevalence, treatment, and control of dyslipidemia among hypertensive adults in the GENOA study. Arch Intern Med. 2004 Jun 28;164(12):1313-8.
Morrison AC, Cooper R, Hunt S, Lewis CE, Luke A, Mosley TH, Boerwinkle E. Genome scan for hypertension in nonobese African Americans The national heart, lung, and blood institute family blood pressure program. Am J Hypertens. 2004 Sep;17(9):834-8.
Kullo IJ, Bailey KR, Bielak LF, Sheedy PF 2nd, Klee GG, Kardia SL, Peyser PA, Boerwinkle E, Turner ST. Lack of association between lipoprotein(a) and coronary artery calcification in the Genetic Epidemiology Network of Arteriopathy (GENOA) study. Mayo Clin Proc. 2004 Oct;79(10):1258-63.
Kardia SL, Turner ST, Schwartz GL, Moore JH. Linear dynamic features of ambulatory blood pressure in a population-based study. Blood Press Monit. 2004 Oct;9(5):259-67.
Kullo IJ, Bailey KR, Kardia SL, Mosley TH Jr, Boerwinkle E, Turner ST. Ethnic differences in peripheral arterial disease in the NHLBI Genetic Epidemiology Network of Arteriopathy (GENOA) study. Vasc Med. 2003 Nov;8(4):237-42.
Frazier L, Turner ST, Schwartz GL, Chapman AB, Boerwinkle E. Multilocus effects of the renin-angiotensin-aldosterone system genes on blood pressure response to a thiazide diuretic. Pharmacogenomics J. 2004;4(1):17-23.
Tang H, Quertermous T, Rodriguez B, Kardia SL, Zhu X, Brown A, Pankow JS, Province MA, Hunt SC, Boerwinkle E, Schork NJ, Risch NJ. Genetic structure, self-identified race/ethnicity, and confounding in case-control association studies. Am J Hum Genet. 2005 Feb;76(2):268-75. Epub 2004 Dec 29.
Turner ST, Fornage M, Jack CR Jr, Mosley TH, Kardia SL, Boerwinkle E, de Andrade M. Genomic Susceptibility Loci for Brain Atrophy in Hypertensive Sibships From the GENOA Study. Hypertension. 2005 Feb 7; [Epub ahead of print]
An P, Freedman BI, Hanis CL, Chen YD, Weder AB, Schork NJ, Boerwinkle E, Province MA, Hsiung CA, Wu X, Quertermous T, Rao DC. Genome-wide Linkage Scans for Fasting Glucose, Insulin, and Insulin Resistance in the National Heart, Lung, and Blood Institute Family Blood Pressure Program: Evidence of Linkages to Chromosome 7q36 and 19q13 From Meta-Analysis. Diabetes. 2005 Mar;54(3):909-14.
Zhu X, Luke A, Cooper RS, Quertermous T, Hanis C, Mosley T, Gu CC, Tang H, Rao DC, Risch N, Weder A. Admixture mapping for hypertension loci with genome-scan markers. Nat Genet. 2005 Feb;37(2):177-81. Epub 2005 Jan 23.
Jorgenson E, Tang H, Gadde M, Province M, Leppert M, Kardia S, Schork N, Cooper R, Rao DC, Boerwinkle E, Risch N. Ethnicity and human genetic linkage maps. Am J Hum Genet. 2005 Feb;76(2):276-90. Epub 2004 Dec 30.
Record last reviewed: March 2005
Last Updated: March 17, 2005
Record first received: May 25, 2000
ClinicalTrials.gov Identifier: NCT00005269
Health Authority: United States: Federal Government
ClinicalTrials.gov processed this record on 2005-04-08
Source: ClinicalTrials.gov
Cache Date: April 9, 2005
Resources
- Blood Diseases And Disorders (National Women's Health Information Center)
- Blood Disorders in Lupus (Lupus Foundation of America, Inc.)
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