G protein beta 3 subunit 825T allele carriage and risk of coronary artery disease.
C825T polymorphism in the G protein beta3 subunit gene (GNB3) is associated with increased transmembrane signal transduction via adenylyl cyclase inhibiting G (G(i)) proteins. We tested whether GNB3 C825T is associated with an increased risk of coronary artery disease (CAD). Genotypes were determined with polymerase chain reaction and allele-specific fluorogenic probes. Angiographically examined, consecutive patients (n=998) with CAD and angiographically examined, sex- and age-matched controls (n=340) with no evidence of CAD were studied. The proportion of T allele carriers was significantly higher in the group with CAD compared with the control group (55.6 vs. 48.5; P=0.02). T allele carriage was associated with a 33% increase in the unadjusted risk (OR 1.33 [95% confidence interval, 1.04-1.70]) and a 37% increase in the adjusted risk (OR from the multivariate model 1.37 [95% CI, 1.06-1.76]) for CAD. Moreover, an increase in T allele carriage was associated with an increase in disease severity (P=0.006; test for trend). The strongest association was observed between T allele carriage and three-vessel disease (unadjusted OR 1.47 [95% CI, 1.10-1.96]). Thus, carrying this allele is associated with the presence as well as the severity of CAD.
von Beckerath
Nicolas
N
Deutsches Herzzentrum München and 1. Medizinische Klinik rechts der Isar, Technische Universität München, Lazarettstr. 36, Germany. beckerath@dhm.mhn.de
Schusterschitz
Yasmin
Y
Koch
Werner
W
Griesser
Korinna
K
Mehilli
Julinda
J
Gorchakova
Olga
O
Schömig
Albert
A
Kastrati
Adnan
A
D000368:Aged; D000483:Alleles; D001483:Base Sequence; D016022:Case-Control Studies; D003324:Coronary Artery Disease / Q000235:genetics* / Q000503:physiopathology; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D020962:Heterotrimeric GTP-Binding Proteins / Q000235:genetics*; D006579:Heterozygote; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods; D011110:Polymorphism, Genetic; D011336:Probability; D012016:Reference Values; D018570:Risk Assessment; D012720:Severity of Illness Index
D020962:Heterotrimeric GTP-Binding Proteins