Common and Rare Coding Genetic Variation Underlying the Electrocardiographic PR Interval

Honghuang Lin (Lead / Corresponding author), Jessica van Setten, Albert V. Smith, Nathan A. Bihlmeyer, Helen R. Warren, Jennifer A. Brody, Farid Radmanesh, Leanne Hall, Niels Grarup, Martina Müller-Nurasyid, Thibaud Boutin, Niek Verweij, Henry J. Lin, Ruifang Li-Gao, Marten E. van den Berg, Jonathan Marten, Stefan Weiss, Bram P. Prins, Jeffrey Haessler, Leo-Pekka LyytikäinenHao Mei, Tamara B. Harris, Lenore J. Launer, Man Li, Alvaro Alonso, Elsayed Z. Soliman, John M. Connell, Paul L. Huang, Lu-Chen Weng, Heather S. Jameson, William Hucker, Alan Hanley, Nathan R. Tucker, Yii-Der Ida Chen, Joshua C. Bis, Kenneth M. Rice, Colleen M. Sitlani, Jan A. Kors, Zhijun Xie, Chengping Wen, Jared W. Magnani, Christopher P. Nelson, Jørgen K. Kanters, Moritz F. Sinner, Konstantin Strauch, Annette Peters, Melanie Waldenberger, Thomas Meitinger, Jette Bork-Jensen, Blair H. Smith

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Background: Electrical conduction from the cardiac sinoatrial node to the ventricles is critical for normal heart function. Genome-wide association studies have identified more than a dozen common genetic loci that are associated with PR interval. However, it is unclear whether rare and low-frequency variants also contribute to PR interval heritability.

Methods: We performed large-scale meta-analyses of the PR interval that included 83 367 participants of European ancestry and 9436 of African ancestry. We examined both common and rare variants associated with the PR interval.

Results: We identified 31 genetic loci that were significantly associated with PR interval after Bonferroni correction (P<1.2×10-6), including 11 novel loci that have not been reported previously. Many of these loci are involved in heart morphogenesis. In gene-based analysis, we found that multiple rare variants at MYH6 (P=5.9×10-11) and SCN5A (P=1.1×10-7) were associated with PR interval. SCN5A locus also was implicated in the common variant analysis, whereas MYH6 was a novel locus.

Conclusions: We identified common variants at 11 novel loci and rare variants within 2 gene regions that were significantly associated with PR interval. Our findings provide novel insights to the current understanding of atrioventricular conduction, which is critical for cardiac activity and an important determinant of health.

Original languageEnglish
Article numbere002037
Pages (from-to)1-30
Number of pages30
JournalCirculation: Genomic and Precision Medicine
Issue number5
Early online date10 May 2018
Publication statusPublished - May 2018


  • Electrophysiology
  • Epidemiology
  • Genetic Association Studies


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