Abstract
Background-The P wave on an ECG is a measure of atrial electric function, and its characteristics may serve as predictors for atrial arrhythmias. Increased mean P-wave duration and P-wave terminal force traditionally have been used as markers for left atrial enlargement, and both have been associated with increased risk of atrial fibrillation. Here, we explore the genetic basis of P-wave morphology through meta-analysis of genome-wide association study results for P-wave duration and P-wave terminal force from 12 cohort studies.
Methods and Results-We included 44 456 individuals, of which 6778 (16%) were of African ancestry. Genotyping, imputation, and genome-wide association study were performed at each study site. Summary-level results were meta-analyzed centrally using inverse-variance weighting. In meta-analyses of P-wave duration, we identified 6 significant (P
Conclusions-We have identified 6 novel genetic loci associated with P-wave duration and 6 novel loci associated with P-wave terminal force. Future studies of these loci may aid in identifying new targets for drugs that may modify atrial conduction or treat atrial arrhythmias.
Original language | English |
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Article number | 001667 |
Number of pages | 57 |
Journal | Circulation : Cardiovascular Genetics |
Volume | 10 |
Issue number | 4 |
DOIs | |
Publication status | Published - Aug 2017 |
Keywords
- arrhythmia
- atrial function
- electrocardiography
- genetic variation
- genome-wide association study
- GENOME-WIDE ASSOCIATION
- MYOSIN HEAVY-CHAIN
- DOMAIN PROTEIN-1 EPAS1
- RENAL-CELL CARCINOMA
- SICK SINUS SYNDROME
- RESTING HEART-RATE
- ATRIAL-FIBRILLATION
- ATHEROSCLEROSIS RISK
- CARDIAC MYOCYTES
- COMMON VARIANTS