Common NOS1AP variants are associated with a prolonged QTc interval in the Rotterdam study

被引:110
作者
Aarnoudse, Albert-Jan L. H. J.
Newton-Cheh, Christopher
de Bakker, Paul I. W.
Straus, Sabine M. J. M.
Kors, Jan A.
Hofman, Albert
Uitterlinden, Andre G.
Witteman, Jacqueline C. M.
Stricker, Bruno H. C.
机构
[1] Erasmus MC, Dept Epidemiol & Biostat, NL-3000 CA Rotterdam, Netherlands
[2] Erasmus MC, Dept Internal Med, NL-3000 CA Rotterdam, Netherlands
[3] Erasmus MC, Dept Med Informat, NL-3000 CA Rotterdam, Netherlands
[4] Massachusetts Gen Hosp, Dept Biol Mol, Div Cardiol, Boston, MA 02114 USA
[5] Massachusetts Gen Hosp, Ctr Human Genet Res, Boston, MA 02114 USA
[6] Broad Inst Harvard & MIT, Program Med & Populat Genet, Cambridge, MA USA
[7] NHLBI, Framingham Heart Study, Framingham, MA USA
[8] Harvard Univ, Sch Med, Dept Genet, Boston, MA USA
[9] Inspectorate Hlth Care, The Hague, Netherlands
[10] Dutch Med Evaluat Board, The Hague, Netherlands
关键词
arrhythmia; death; sudden; electrocardiography; genetics; long-QT syndrome;
D O I
10.1161/CIRCULATIONAHA.106.676783
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background - QT prolongation is an important risk factor for sudden cardiac death. About 35% of QT-interval variation is heritable. In a recent genome-wide association study, a common variant (rs10494366) in the nitric oxide synthase 1 adaptor protein (NOS1AP) gene was found to be associated with QT-interval variation. We tested for association of 2 NOS1AP variants with QT duration and sudden cardiac death. Methods and Results - The Rotterdam Study is a population-based, prospective cohort study of individuals >= 55 years of age. The NOS1AP variants rs10494366 T > G and rs10918594 C > G were genotyped in 6571 individuals. Heart rate - corrected QT interval ( QTc) was determined with ECG analysis software on up to 3 digital ECGs per individual ( total, 11 108 ECGs from 5374 individuals). The association with QTc duration was estimated with repeated-measures analyses, and the association with sudden cardiac death was estimated by Cox proportional-hazards analyses. The rs10494366 G allele (36% frequency) was associated with a 3.8-ms (95% confidence interval, 3.0 to 4.6; P = 7.8 x 10(-20)) increase in QTc interval duration for each additional allele copy, and the rs10918594 G allele (31% frequency) was associated with a 3.6-ms ( 95% confidence interval, 2.7 to 4.4; P = 6.9 x 10(-17)) increase per additional allele copy. None of the inferred NOS1AP haplotypes showed a stronger effect than the individual single-nucleotide polymorphisms. There were 233 sudden cardiac deaths over 11.9 median years of follow-up. No significant association was observed with sudden cardiac death risk. Conclusions - Common variants in NOS1AP are strongly associated with QT-interval duration in an elderly population. Larger sample sizes are needed to confirm or exclude an effect on sudden cardiac death risk.
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页码:10 / 16
页数:7
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