title: Cardiovascular risk in relation to alpha-adducin Gly460Trp polymorphism and systolic pressure: a prospective population study.
abstract: Preliminary evidence from 1 case-control study suggested that in hypertensive patients, the alpha-adducin 460Trp allele might be associated with a 2-fold higher risk of coronary heart disease. In a prospective population study, we investigated whether the alpha-adducin Gly460Trp polymorphism predicted mortality and morbidity. From August 1985 until July 2003, we randomly recruited 2235 Belgian residents. We obtained information on vital status (until July 1, 2004) and the incidence of events via registries and repeat examinations (median 3). In Cox regression, before and after adjustment for other risk factors, we found strong interaction between systolic blood pressure at baseline, analyzed as a continuous variable, and the alpha-adducin polymorphism in relation to total (P=0.01) and cardiovascular mortality (P=0.007) and all cardiovascular (P=0.003), cardiac (P=0.001), and coronary events (P=0.03). The hazard ratio for total mortality associated with the Trp allele relative to GlyGly homozygosity was 2.30 (95% confidence interval, 1.12 to 4.72; P=0.02) in patients with stage-2 systolic hypertension (> or =160 mm Hg) and 0.88 (0.61 to 1.26; P=0.48) in the other participants. For all cardiovascular complications, these estimates were 2.94 (1.28 to 6.74; P=0.01) and 0.83 (0.58 to 1.20; P=0.32), respectively. For all cardiovascular events, the positive predictive value and the attributable risk associated with the Trp allele in patients with stage-2 systolic hypertension were 76.9% and 44.3%, respectively. In conclusion, the alpha-adducin Gly460Trp polymorphism, in combination with systolic blood pressure, is a strong predictor of cardiovascular mortality and morbidity.
authors.affiliation: Study Coordinating Centre, Department of Molecular and Cardiovascular Research, University of Leuven, Belgium.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Lutgarde
authors.initials: L
authors.lastname: Thijs
authors.forename: Tatiana
authors.initials: T
authors.lastname: Kuznetsova
authors.forename: Laura
authors.initials: L
authors.lastname: Zagato
authors.forename: Harry
authors.initials: H
authors.lastname: Struijker-Boudier
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bianchi
authors.forename: Jan A
authors.initials: JA
authors.lastname: Staessen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure; D002148:Calmodulin-Binding Proteins / Q000235:genetics*; D002318:Cardiovascular Diseases / Q000209:etiology / Q000235:genetics* / Q000401:mortality; D002648:Child; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005998:Glycine; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000235:genetics* / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011446:Prospective Studies; D012306:Risk; D014364:Tryptophan; D000099291:Adducins
chemical_list: D002148:Calmodulin-Binding Proteins; D005998:Glycine; D014364:Tryptophan; D000099291:Adducins