TY - JOUR T1 - ExomeChip-Wide Analysis of 95 626 Individuals Identifies 10 Novel Loci Associated With QT and JT Intervals. JF - Circ Genom Precis Med Y1 - 2018 A1 - Bihlmeyer, Nathan A A1 - Brody, Jennifer A A1 - Smith, Albert Vernon A1 - Warren, Helen R A1 - Lin, Honghuang A1 - Isaacs, Aaron A1 - Liu, Ching-Ti A1 - Marten, Jonathan A1 - Radmanesh, Farid A1 - Hall, Leanne M A1 - Grarup, Niels A1 - Mei, Hao A1 - Müller-Nurasyid, Martina A1 - Huffman, Jennifer E A1 - Verweij, Niek A1 - Guo, Xiuqing A1 - Yao, Jie A1 - Li-Gao, Ruifang A1 - van den Berg, Marten A1 - Weiss, Stefan A1 - Prins, Bram P A1 - van Setten, Jessica A1 - Haessler, Jeffrey A1 - Lyytikäinen, Leo-Pekka A1 - Li, Man A1 - Alonso, Alvaro A1 - Soliman, Elsayed Z A1 - Bis, Joshua C A1 - Austin, Tom A1 - Chen, Yii-Der Ida A1 - Psaty, Bruce M A1 - Harrris, Tamara B A1 - Launer, Lenore J A1 - Padmanabhan, Sandosh A1 - Dominiczak, Anna A1 - Huang, Paul L A1 - Xie, Zhijun A1 - Ellinor, Patrick T A1 - Kors, Jan A A1 - Campbell, Archie A1 - Murray, Alison D A1 - Nelson, Christopher P A1 - Tobin, Martin D A1 - Bork-Jensen, Jette A1 - Hansen, Torben A1 - Pedersen, Oluf A1 - Linneberg, Allan A1 - Sinner, Moritz F A1 - Peters, Annette A1 - Waldenberger, Melanie A1 - Meitinger, Thomas A1 - Perz, Siegfried A1 - Kolcic, Ivana A1 - Rudan, Igor A1 - de Boer, Rudolf A A1 - van der Meer, Peter A1 - Lin, Henry J A1 - Taylor, Kent D A1 - de Mutsert, Renée A1 - Trompet, Stella A1 - Jukema, J Wouter A1 - Maan, Arie C A1 - Stricker, Bruno H C A1 - Rivadeneira, Fernando A1 - Uitterlinden, Andre A1 - Völker, Uwe A1 - Homuth, Georg A1 - Völzke, Henry A1 - Felix, Stephan B A1 - Mangino, Massimo A1 - Spector, Timothy D A1 - Bots, Michiel L A1 - Perez, Marco A1 - Raitakari, Olli T A1 - Kähönen, Mika A1 - Mononen, Nina A1 - Gudnason, Vilmundur A1 - Munroe, Patricia B A1 - Lubitz, Steven A A1 - van Duijn, Cornelia M A1 - Newton-Cheh, Christopher H A1 - Hayward, Caroline A1 - Rosand, Jonathan A1 - Samani, Nilesh J A1 - Kanters, Jørgen K A1 - Wilson, James G A1 - Kääb, Stefan A1 - Polasek, Ozren A1 - van der Harst, Pim A1 - Heckbert, Susan R A1 - Rotter, Jerome I A1 - Mook-Kanamori, Dennis O A1 - Eijgelsheim, Mark A1 - Dörr, Marcus A1 - Jamshidi, Yalda A1 - Asselbergs, Folkert W A1 - Kooperberg, Charles A1 - Lehtimäki, Terho A1 - Arking, Dan E A1 - Sotoodehnia, Nona AB -

BACKGROUND: QT interval, measured through a standard ECG, captures the time it takes for the cardiac ventricles to depolarize and repolarize. JT interval is the component of the QT interval that reflects ventricular repolarization alone. Prolonged QT interval has been linked to higher risk of sudden cardiac arrest.

METHODS AND RESULTS: We performed an ExomeChip-wide analysis for both QT and JT intervals, including 209 449 variants, both common and rare, in 17 341 genes from the Illumina Infinium HumanExome BeadChip. We identified 10 loci that modulate QT and JT interval duration that have not been previously reported in the literature using single-variant statistical models in a meta-analysis of 95 626 individuals from 23 cohorts (comprised 83 884 European ancestry individuals, 9610 blacks, 1382 Hispanics, and 750 Asians). This brings the total number of ventricular repolarization associated loci to 45. In addition, our approach of using coding variants has highlighted the role of 17 specific genes for involvement in ventricular repolarization, 7 of which are in novel loci.

CONCLUSIONS: Our analyses show a role for myocyte internal structure and interconnections in modulating QT interval duration, adding to previous known roles of potassium, sodium, and calcium ion regulation, as well as autonomic control. We anticipate that these discoveries will open new paths to the goal of making novel remedies for the prevention of lethal ventricular arrhythmias and sudden cardiac arrest.

VL - 11 IS - 1 ER -