Novel genetic markers associate with atrial fibrillation risk in Europeans and Japanese

Steven A. Lubitz, Kathryn L. Lunetta, Honghuang Lin, Dan E. Arking, Stella Trompet, Guo Li, Bouwe P. Krijthe, Daniel I. Chasman, John Barnard, Marcus E. Kleber, Marcus Dörr, Kouichi Ozaki, Albert V. Smith, Martina Müller-Nurasyid, Stefan Walter, Sunil K. Agarwal, Joshua C. Bis, Jennifer A. Brody, Lin Y. Chen, Brendan M. EverettIan Ford, Oscar H. Franco, Tamara B. Harris, Albert Hofman, Stefan Kääb, Saagar Mahida, Sekar Kathiresan, Michiaki Kubo, Lenore J. Launer, Peter W. Macfarlane, Jared W. Magnani, Barbara McKnight, David D. McManus, Annette Peters, Bruce M. Psaty, Lynda M. Rose, Jerome I. Rotter, Guenther Silbernagel, Jonathan D. Smith, Nona Sotoodehnia, David J. Stott, Kent D. Taylor, Andreas Tomaschitz, Tatsuhiko Tsunoda, Andre G. Uitterlinden, David R. Van Wagoner, Uwe Völker, Henry Völzke, Joanne M. Murabito, Moritz F. Sinner, Vilmundur Gudnason, Stephan B. Felix, Winfried März, Mina Chung, Christine M. Albert, Bruno H. Stricker, Toshihiro Tanaka, Susan R. Heckbert, J. Wouter Jukema, Alvaro Alonso, Emelia J. Benjamin, Patrick T. Ellinor

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Abstract

Objectives This study sought to identify nonredundant atrial fibrillation (AF) genetic susceptibility signals and examine their cumulative relations with AF risk. Background AF-associated loci span broad genomic regions that may contain multiple susceptibility signals. Whether multiple signals exist at AF loci has not been systematically explored. Methods We performed association testing conditioned on the most significant, independently associated genetic markers at 9 established AF loci using 2 complementary techniques in 64,683 individuals of European ancestry (3,869 incident and 3,302 prevalent AF cases). Genetic risk scores were created and tested for association with AF in Europeans and an independent sample of 11,309 individuals of Japanese ancestry (7,916 prevalent AF cases). Results We observed at least 4 distinct AF susceptibility signals on chromosome 4q25 upstream of PITX2, but not at the remaining 8 AF loci. A multilocus score comprised 12 genetic markers demonstrated an estimated 5-fold gradient in AF risk. We observed a similar spectrum of risk associated with these markers in Japanese. Regions containing AF signals on chromosome 4q25 displayed a greater degree of evolutionary conservation than the remainder of the locus, suggesting that they may tag regulatory elements. Conclusions The chromosome 4q25 AF locus is architecturally complex and harbors at least 4 AF susceptibility signals in individuals of European ancestry. Similar polygenic AF susceptibility exists between Europeans and Japanese. Future work is necessary to identify causal variants, determine mechanisms by which associated loci predispose to AF, and explore whether AF susceptibility signals classify individuals at risk for AF and related morbidity.

Original languageEnglish
Pages (from-to)1200-1210
Number of pages11
JournalJournal of the American College of Cardiology
Volume63
Issue number12
DOIs
Publication statusPublished - 01-04-2014

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All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

Cite this

Lubitz, S. A., Lunetta, K. L., Lin, H., Arking, D. E., Trompet, S., Li, G., Krijthe, B. P., Chasman, D. I., Barnard, J., Kleber, M. E., Dörr, M., Ozaki, K., Smith, A. V., Müller-Nurasyid, M., Walter, S., Agarwal, S. K., Bis, J. C., Brody, J. A., Chen, L. Y., ... Ellinor, P. T. (2014). Novel genetic markers associate with atrial fibrillation risk in Europeans and Japanese. Journal of the American College of Cardiology, 63(12), 1200-1210. https://doi.org/10.1016/j.jacc.2013.12.015