Abstract
Elevated resting heart rate is associated with greater risk of cardiovascular disease and mortality. In a 2-stage meta-analysis of genome-wide association studies in up to 181,171 individuals, we identified 14 new loci associated with heart rate and confirmed associations with all 7 previously established loci. Experimental downregulation of gene expression in Drosophila melanogaster and Danio rerio identified 20 genes at 11 loci that are relevant for heart rate regulation and highlight a role for genes involved in signal transmission, embryonic cardiac development and the pathophysiology of dilated cardiomyopathy, congenital heart failure and/or sudden cardiac death. In addition, genetic susceptibility to increased heart rate is associated with altered cardiac conduction and reduced risk of sick sinus syndrome, and both heart rate-increasing and heart rate-decreasing variants associate with risk of atrial fibrillation. Our findings provide fresh insights into the mechanisms regulating heart rate and identify new therapeutic targets.
Original language | English |
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Pages (from-to) | 621-31 |
Number of pages | 11 |
Journal | Nature Genetics |
Volume | 45 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2013 |
Keywords
- Animals
- Arrhythmias, Cardiac/genetics
- Gene Frequency
- Genetic Loci
- Genome-Wide Association Study
- Heart Conduction System/physiopathology
- Heart Rate/genetics
- Humans
- Metabolic Networks and Pathways
- Polymorphism, Single Nucleotide
- Quantitative Trait Loci