TY - JOUR T1 - Common variation in COL4A1/COL4A2 is associated with sporadic cerebral small vessel disease. JF - Neurology Y1 - 2015 A1 - Rannikmae, Kristiina A1 - Davies, Gail A1 - Thomson, Pippa A A1 - Bevan, Steve A1 - Devan, William J A1 - Falcone, Guido J A1 - Traylor, Matthew A1 - Anderson, Christopher D A1 - Battey, Thomas W K A1 - Radmanesh, Farid A1 - Deka, Ranjan A1 - Woo, Jessica G A1 - Martin, Lisa J A1 - Jimenez-Conde, Jordi A1 - Selim, Magdy A1 - Brown, Devin L A1 - Silliman, Scott L A1 - Kidwell, Chelsea S A1 - Montaner, Joan A1 - Langefeld, Carl D A1 - Slowik, Agnieszka A1 - Hansen, Bjorn M A1 - Lindgren, Arne G A1 - Meschia, James F A1 - Fornage, Myriam A1 - Bis, Joshua C A1 - Debette, Stephanie A1 - Ikram, Mohammad A A1 - Longstreth, Will T A1 - Schmidt, Reinhold A1 - Zhang, Cathy R A1 - Yang, Qiong A1 - Sharma, Pankaj A1 - Kittner, Steven J A1 - Mitchell, Braxton D A1 - Holliday, Elizabeth G A1 - Levi, Christopher R A1 - Attia, John A1 - Rothwell, Peter M A1 - Poole, Deborah L A1 - Boncoraglio, Giorgio B A1 - Psaty, Bruce M A1 - Malik, Rainer A1 - Rost, Natalia A1 - Worrall, Bradford B A1 - Dichgans, Martin A1 - Van Agtmael, Tom A1 - Woo, Daniel A1 - Markus, Hugh S A1 - Seshadri, Sudha A1 - Rosand, Jonathan A1 - Sudlow, Cathie L M KW - Cerebral Small Vessel Diseases KW - Collagen Type IV KW - Genetic Association Studies KW - Genetic Variation KW - Humans KW - Polymorphism, Single Nucleotide AB -

OBJECTIVES: We hypothesized that common variants in the collagen genes COL4A1/COL4A2 are associated with sporadic forms of cerebral small vessel disease.

METHODS: We conducted meta-analyses of existing genotype data among individuals of European ancestry to determine associations of 1,070 common single nucleotide polymorphisms (SNPs) in the COL4A1/COL4A2 genomic region with the following: intracerebral hemorrhage and its subtypes (deep, lobar) (1,545 cases, 1,485 controls); ischemic stroke and its subtypes (cardioembolic, large vessel disease, lacunar) (12,389 cases, 62,004 controls); and white matter hyperintensities (2,733 individuals with ischemic stroke and 9,361 from population-based cohorts with brain MRI data). We calculated a statistical significance threshold that accounted for multiple testing and linkage disequilibrium between SNPs (p < 0.000084).

RESULTS: Three intronic SNPs in COL4A2 were significantly associated with deep intracerebral hemorrhage (lead SNP odds ratio [OR] 1.29, 95% confidence interval [CI] 1.14-1.46, p = 0.00003; r(2) > 0.9 between SNPs). Although SNPs associated with deep intracerebral hemorrhage did not reach our significance threshold for association with lacunar ischemic stroke (lead SNP OR 1.10, 95% CI 1.03-1.18, p = 0.0073), and with white matter hyperintensity volume in symptomatic ischemic stroke patients (lead SNP OR 1.07, 95% CI 1.01-1.13, p = 0.016), the direction of association was the same. There was no convincing evidence of association with white matter hyperintensities in population-based studies or with non-small vessel disease cerebrovascular phenotypes.

CONCLUSIONS: Our results indicate an association between common variation in the COL4A2 gene and symptomatic small vessel disease, particularly deep intracerebral hemorrhage. These findings merit replication studies, including in ethnic groups of non-European ancestry.

VL - 84 IS - 9 U1 - http://www.ncbi.nlm.nih.gov/pubmed/25653287?dopt=Abstract ER - TY - JOUR T1 - Discovery of novel heart rate-associated loci using the Exome Chip. JF - Hum Mol Genet Y1 - 2017 A1 - van den Berg, Marten E A1 - Warren, Helen R A1 - Cabrera, Claudia P A1 - Verweij, Niek A1 - Mifsud, Borbala A1 - Haessler, Jeffrey A1 - Bihlmeyer, Nathan A A1 - Fu, Yi-Ping A1 - Weiss, Stefan A1 - Lin, Henry J A1 - Grarup, Niels A1 - Li-Gao, Ruifang A1 - Pistis, Giorgio A1 - Shah, Nabi A1 - Brody, Jennifer A A1 - Müller-Nurasyid, Martina A1 - Lin, Honghuang A1 - Mei, Hao A1 - Smith, Albert V A1 - Lyytikäinen, Leo-Pekka A1 - Hall, Leanne M A1 - van Setten, Jessica A1 - Trompet, Stella A1 - Prins, Bram P A1 - Isaacs, Aaron A1 - Radmanesh, Farid A1 - Marten, Jonathan A1 - Entwistle, Aiman A1 - Kors, Jan A A1 - Silva, Claudia T A1 - Alonso, Alvaro A1 - Bis, Joshua C A1 - de Boer, Rudolf A1 - de Haan, Hugoline G A1 - de Mutsert, Renée A1 - Dedoussis, George A1 - Dominiczak, Anna F A1 - Doney, Alex S F A1 - Ellinor, Patrick T A1 - Eppinga, Ruben N A1 - Felix, Stephan B A1 - Guo, Xiuqing A1 - Hagemeijer, Yanick A1 - Hansen, Torben A1 - Harris, Tamara B A1 - Heckbert, Susan R A1 - Huang, Paul L A1 - Hwang, Shih-Jen A1 - Kähönen, Mika A1 - Kanters, Jørgen K A1 - Kolcic, Ivana A1 - Launer, Lenore J A1 - Li, Man A1 - Yao, Jie A1 - Linneberg, Allan A1 - Liu, Simin A1 - Macfarlane, Peter W A1 - Mangino, Massimo A1 - Morris, Andrew D A1 - Mulas, Antonella A1 - Murray, Alison D A1 - Nelson, Christopher P A1 - Orrù, Marco A1 - Padmanabhan, Sandosh A1 - Peters, Annette A1 - Porteous, David J A1 - Poulter, Neil A1 - Psaty, Bruce M A1 - Qi, Lihong A1 - Raitakari, Olli T A1 - Rivadeneira, Fernando A1 - Roselli, Carolina A1 - Rudan, Igor A1 - Sattar, Naveed A1 - Sever, Peter A1 - Sinner, Moritz F A1 - Soliman, Elsayed Z A1 - Spector, Timothy D A1 - Stanton, Alice V A1 - Stirrups, Kathleen E A1 - Taylor, Kent D A1 - Tobin, Martin D A1 - Uitterlinden, Andre A1 - Vaartjes, Ilonca A1 - Hoes, Arno W A1 - van der Meer, Peter A1 - Völker, Uwe A1 - Waldenberger, Melanie A1 - Xie, Zhijun A1 - Zoledziewska, Magdalena A1 - Tinker, Andrew A1 - Polasek, Ozren A1 - Rosand, Jonathan A1 - Jamshidi, Yalda A1 - van Duijn, Cornelia M A1 - Zeggini, Eleftheria A1 - Wouter Jukema, J A1 - Asselbergs, Folkert W A1 - Samani, Nilesh J A1 - Lehtimäki, Terho A1 - Gudnason, Vilmundur A1 - Wilson, James A1 - Lubitz, Steven A A1 - Kääb, Stefan A1 - Sotoodehnia, Nona A1 - Caulfield, Mark J A1 - Palmer, Colin N A A1 - Sanna, Serena A1 - Mook-Kanamori, Dennis O A1 - Deloukas, Panos A1 - Pedersen, Oluf A1 - Rotter, Jerome I A1 - Dörr, Marcus A1 - O'Donnell, Chris J A1 - Hayward, Caroline A1 - Arking, Dan E A1 - Kooperberg, Charles A1 - van der Harst, Pim A1 - Eijgelsheim, Mark A1 - Stricker, Bruno H A1 - Munroe, Patricia B AB -

Background Resting heart rate is a heritable trait, and an increase in heart rate is associated with increased mortality risk. GWAS analyses have found loci associated with resting heart rate, at the time of our study these loci explained 0.9% of the variation.Aim To discover new genetic loci associated with heart rate from Exome Chip meta-analyses.Methods Heart rate was measured from either elecrtrocardiograms or pulse recordings. We meta-analysed heart rate association results from 104,452 European-ancestry individuals from 30 cohorts, genotyped using the Exome Chip. Twenty-four variants were selected for follow-up in an independent dataset (UK Biobank, N = 134,251). Conditional and gene-based testing was undertaken, and variants were investigated with bioinformatics methods.Results We discovered five novel heart rate loci, and one new independent low-frequency non-synonymous variant in an established heart rate locus (KIAA1755). Lead variants in four of the novel loci are non-synonymous variants in the genes C10orf71, DALDR3, TESK2, SEC31B. The variant at SEC31B is significantly associated with SEC31B expression in heart and tibial nerve tissue. Further candidate genes were detected from long range regulatory chromatin interactions in heart tissue (SCD, SLF2, MAPK8). We observed significant enrichment in DNase I hypersensitive sites in fetal heart and lung. Moreover, enrichment was seen for the first time in human neuronal progenitor cells (derived from embryonic stem cells) and fetal muscle samples by including our novel variants.Conclusion Our findings advance the knowledge of the genetic architecture of heart rate, and indicate new candidate genes for follow-up functional studies.

ER - TY - JOUR T1 - Large-scale analyses of common and rare variants identify 12 new loci associated with atrial fibrillation. JF - Nat Genet Y1 - 2017 A1 - Christophersen, Ingrid E A1 - Rienstra, Michiel A1 - Roselli, Carolina A1 - Yin, Xiaoyan A1 - Geelhoed, Bastiaan A1 - Barnard, John A1 - Lin, Honghuang A1 - Arking, Dan E A1 - Smith, Albert V A1 - Albert, Christine M A1 - Chaffin, Mark A1 - Tucker, Nathan R A1 - Li, Molong A1 - Klarin, Derek A1 - Bihlmeyer, Nathan A A1 - Low, Siew-Kee A1 - Weeke, Peter E A1 - Müller-Nurasyid, Martina A1 - Smith, J Gustav A1 - Brody, Jennifer A A1 - Niemeijer, Maartje N A1 - Dörr, Marcus A1 - Trompet, Stella A1 - Huffman, Jennifer A1 - Gustafsson, Stefan A1 - Schurmann, Claudia A1 - Kleber, Marcus E A1 - Lyytikäinen, Leo-Pekka A1 - Seppälä, Ilkka A1 - Malik, Rainer A1 - Horimoto, Andrea R V R A1 - Perez, Marco A1 - Sinisalo, Juha A1 - Aeschbacher, Stefanie A1 - Thériault, Sébastien A1 - Yao, Jie A1 - Radmanesh, Farid A1 - Weiss, Stefan A1 - Teumer, Alexander A1 - Choi, Seung Hoan A1 - Weng, Lu-Chen A1 - Clauss, Sebastian A1 - Deo, Rajat A1 - Rader, Daniel J A1 - Shah, Svati H A1 - Sun, Albert A1 - Hopewell, Jemma C A1 - Debette, Stephanie A1 - Chauhan, Ganesh A1 - Yang, Qiong A1 - Worrall, Bradford B A1 - Paré, Guillaume A1 - Kamatani, Yoichiro A1 - Hagemeijer, Yanick P A1 - Verweij, Niek A1 - Siland, Joylene E A1 - Kubo, Michiaki A1 - Smith, Jonathan D A1 - Van Wagoner, David R A1 - Bis, Joshua C A1 - Perz, Siegfried A1 - Psaty, Bruce M A1 - Ridker, Paul M A1 - Magnani, Jared W A1 - Harris, Tamara B A1 - Launer, Lenore J A1 - Shoemaker, M Benjamin A1 - Padmanabhan, Sandosh A1 - Haessler, Jeffrey A1 - Bartz, Traci M A1 - Waldenberger, Melanie A1 - Lichtner, Peter A1 - Arendt, Marina A1 - Krieger, Jose E A1 - Kähönen, Mika A1 - Risch, Lorenz A1 - Mansur, Alfredo J A1 - Peters, Annette A1 - Smith, Blair H A1 - Lind, Lars A1 - Scott, Stuart A A1 - Lu, Yingchang A1 - Bottinger, Erwin B A1 - Hernesniemi, Jussi A1 - Lindgren, Cecilia M A1 - Wong, Jorge A A1 - Huang, Jie A1 - Eskola, Markku A1 - Morris, Andrew P A1 - Ford, Ian A1 - Reiner, Alex P A1 - Delgado, Graciela A1 - Chen, Lin Y A1 - Chen, Yii-Der Ida A1 - Sandhu, Roopinder K A1 - Li, Man A1 - Boerwinkle, Eric A1 - Eisele, Lewin A1 - Lannfelt, Lars A1 - Rost, Natalia A1 - Anderson, Christopher D A1 - Taylor, Kent D A1 - Campbell, Archie A1 - Magnusson, Patrik K A1 - Porteous, David A1 - Hocking, Lynne J A1 - Vlachopoulou, Efthymia A1 - Pedersen, Nancy L A1 - Nikus, Kjell A1 - Orho-Melander, Marju A1 - Hamsten, Anders A1 - Heeringa, Jan A1 - Denny, Joshua C A1 - Kriebel, Jennifer A1 - Darbar, Dawood A1 - Newton-Cheh, Christopher A1 - Shaffer, Christian A1 - Macfarlane, Peter W A1 - Heilmann-Heimbach, Stefanie A1 - Almgren, Peter A1 - Huang, Paul L A1 - Sotoodehnia, Nona A1 - Soliman, Elsayed Z A1 - Uitterlinden, André G A1 - Hofman, Albert A1 - Franco, Oscar H A1 - Völker, Uwe A1 - Jöckel, Karl-Heinz A1 - Sinner, Moritz F A1 - Lin, Henry J A1 - Guo, Xiuqing A1 - Dichgans, Martin A1 - Ingelsson, Erik A1 - Kooperberg, Charles A1 - Melander, Olle A1 - Loos, Ruth J F A1 - Laurikka, Jari A1 - Conen, David A1 - Rosand, Jonathan A1 - van der Harst, Pim A1 - Lokki, Marja-Liisa A1 - Kathiresan, Sekar A1 - Pereira, Alexandre A1 - Jukema, J Wouter A1 - Hayward, Caroline A1 - Rotter, Jerome I A1 - März, Winfried A1 - Lehtimäki, Terho A1 - Stricker, Bruno H A1 - Chung, Mina K A1 - Felix, Stephan B A1 - Gudnason, Vilmundur A1 - Alonso, Alvaro A1 - Roden, Dan M A1 - Kääb, Stefan A1 - Chasman, Daniel I A1 - Heckbert, Susan R A1 - Benjamin, Emelia J A1 - Tanaka, Toshihiro A1 - Lunetta, Kathryn L A1 - Lubitz, Steven A A1 - Ellinor, Patrick T AB -

Atrial fibrillation affects more than 33 million people worldwide and increases the risk of stroke, heart failure, and death. Fourteen genetic loci have been associated with atrial fibrillation in European and Asian ancestry groups. To further define the genetic basis of atrial fibrillation, we performed large-scale, trans-ancestry meta-analyses of common and rare variant association studies. The genome-wide association studies (GWAS) included 17,931 individuals with atrial fibrillation and 115,142 referents; the exome-wide association studies (ExWAS) and rare variant association studies (RVAS) involved 22,346 cases and 132,086 referents. We identified 12 new genetic loci that exceeded genome-wide significance, implicating genes involved in cardiac electrical and structural remodeling. Our results nearly double the number of known genetic loci for atrial fibrillation, provide insights into the molecular basis of atrial fibrillation, and may facilitate the identification of new potential targets for drug discovery.

VL - 49 IS - 6 ER - TY - JOUR T1 - Common and Rare Coding Genetic Variation Underlying the Electrocardiographic PR Interval. JF - Circ Genom Precis Med Y1 - 2018 A1 - Lin, Honghuang A1 - van Setten, Jessica A1 - Smith, Albert V A1 - Bihlmeyer, Nathan A A1 - Warren, Helen R A1 - Brody, Jennifer A A1 - Radmanesh, Farid A1 - Hall, Leanne A1 - Grarup, Niels A1 - Müller-Nurasyid, Martina A1 - Boutin, Thibaud A1 - Verweij, Niek A1 - Lin, Henry J A1 - Li-Gao, Ruifang A1 - van den Berg, Marten E A1 - Marten, Jonathan A1 - Weiss, Stefan A1 - Prins, Bram P A1 - Haessler, Jeffrey A1 - Lyytikäinen, Leo-Pekka A1 - Mei, Hao A1 - Harris, Tamara B A1 - Launer, Lenore J A1 - Li, Man A1 - Alonso, Alvaro A1 - Soliman, Elsayed Z A1 - Connell, John M A1 - Huang, Paul L A1 - Weng, Lu-Chen A1 - Jameson, Heather S A1 - Hucker, William A1 - Hanley, Alan A1 - Tucker, Nathan R A1 - Chen, Yii-Der Ida A1 - Bis, Joshua C A1 - Rice, Kenneth M A1 - Sitlani, Colleen M A1 - Kors, Jan A A1 - Xie, Zhijun A1 - Wen, Chengping A1 - Magnani, Jared W A1 - Nelson, Christopher P A1 - Kanters, Jørgen K A1 - Sinner, Moritz F A1 - Strauch, Konstantin A1 - Peters, Annette A1 - Waldenberger, Melanie A1 - Meitinger, Thomas A1 - Bork-Jensen, Jette A1 - Pedersen, Oluf A1 - Linneberg, Allan A1 - Rudan, Igor A1 - de Boer, Rudolf A A1 - van der Meer, Peter A1 - Yao, Jie A1 - Guo, Xiuqing A1 - Taylor, Kent D A1 - Sotoodehnia, Nona A1 - Rotter, Jerome I A1 - Mook-Kanamori, Dennis O A1 - Trompet, Stella A1 - Rivadeneira, Fernando A1 - Uitterlinden, Andre A1 - Eijgelsheim, Mark A1 - Padmanabhan, Sandosh A1 - Smith, Blair H A1 - Völzke, Henry A1 - Felix, Stephan B A1 - Homuth, Georg A1 - Völker, Uwe A1 - Mangino, Massimo A1 - Spector, Timothy D A1 - Bots, Michiel L A1 - Perez, Marco A1 - Kähönen, Mika A1 - Raitakari, Olli T A1 - Gudnason, Vilmundur A1 - Arking, Dan E A1 - Munroe, Patricia B A1 - Psaty, Bruce M A1 - van Duijn, Cornelia M A1 - Benjamin, Emelia J A1 - Rosand, Jonathan A1 - Samani, Nilesh J A1 - Hansen, Torben A1 - Kääb, Stefan A1 - Polasek, Ozren A1 - van der Harst, Pim A1 - Heckbert, Susan R A1 - Jukema, J Wouter A1 - Stricker, Bruno H A1 - Hayward, Caroline A1 - Dörr, Marcus A1 - Jamshidi, Yalda A1 - Asselbergs, Folkert W A1 - Kooperberg, Charles A1 - Lehtimäki, Terho A1 - Wilson, James G A1 - Ellinor, Patrick T A1 - Lubitz, Steven A A1 - Isaacs, Aaron AB -

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 (<1.2×10), 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 (=5.9×10) and (=1.1×10) were associated with PR interval. locus also was implicated in the common variant analysis, whereas 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.

VL - 11 IS - 5 ER - TY - JOUR T1 - Exome-chip meta-analysis identifies novel loci associated with cardiac conduction, including ADAMTS6. JF - Genome Biol Y1 - 2018 A1 - Prins, Bram P A1 - Mead, Timothy J A1 - Brody, Jennifer A A1 - Sveinbjornsson, Gardar A1 - Ntalla, Ioanna A1 - Bihlmeyer, Nathan A A1 - van den Berg, Marten A1 - Bork-Jensen, Jette A1 - Cappellani, Stefania A1 - Van Duijvenboden, Stefan A1 - Klena, Nikolai T A1 - Gabriel, George C A1 - Liu, Xiaoqin A1 - Gulec, Cagri A1 - Grarup, Niels A1 - Haessler, Jeffrey A1 - Hall, Leanne M A1 - Iorio, Annamaria A1 - Isaacs, Aaron A1 - Li-Gao, Ruifang A1 - Lin, Honghuang A1 - Liu, Ching-Ti A1 - Lyytikäinen, Leo-Pekka A1 - Marten, Jonathan A1 - Mei, Hao A1 - Müller-Nurasyid, Martina A1 - Orini, Michele A1 - Padmanabhan, Sandosh A1 - Radmanesh, Farid A1 - Ramirez, Julia A1 - Robino, Antonietta A1 - Schwartz, Molly A1 - van Setten, Jessica A1 - Smith, Albert V A1 - Verweij, Niek A1 - Warren, Helen R A1 - Weiss, Stefan A1 - Alonso, Alvaro A1 - Arnar, David O A1 - Bots, Michiel L A1 - de Boer, Rudolf A A1 - Dominiczak, Anna F A1 - Eijgelsheim, Mark A1 - Ellinor, Patrick T A1 - Guo, Xiuqing A1 - Felix, Stephan B A1 - Harris, Tamara B A1 - Hayward, Caroline A1 - Heckbert, Susan R A1 - Huang, Paul L A1 - Jukema, J W A1 - Kähönen, Mika A1 - Kors, Jan A A1 - Lambiase, Pier D A1 - Launer, Lenore J A1 - Li, Man A1 - Linneberg, Allan A1 - Nelson, Christopher P A1 - Pedersen, Oluf A1 - Perez, Marco A1 - Peters, Annette A1 - Polasek, Ozren A1 - Psaty, Bruce M A1 - Raitakari, Olli T A1 - Rice, Kenneth M A1 - Rotter, Jerome I A1 - Sinner, Moritz F A1 - Soliman, Elsayed Z A1 - Spector, Tim D A1 - Strauch, Konstantin A1 - Thorsteinsdottir, Unnur A1 - Tinker, Andrew A1 - Trompet, Stella A1 - Uitterlinden, Andre A1 - Vaartjes, Ilonca A1 - van der Meer, Peter A1 - Völker, Uwe A1 - Völzke, Henry A1 - Waldenberger, Melanie A1 - Wilson, James G A1 - Xie, Zhijun A1 - Asselbergs, Folkert W A1 - Dörr, Marcus A1 - van Duijn, Cornelia M A1 - Gasparini, Paolo A1 - Gudbjartsson, Daniel F A1 - Gudnason, Vilmundur A1 - Hansen, Torben A1 - Kääb, Stefan A1 - Kanters, Jørgen K A1 - Kooperberg, Charles A1 - Lehtimäki, Terho A1 - Lin, Henry J A1 - Lubitz, Steven A A1 - Mook-Kanamori, Dennis O A1 - Conti, Francesco J A1 - Newton-Cheh, Christopher H A1 - Rosand, Jonathan A1 - Rudan, Igor A1 - Samani, Nilesh J A1 - Sinagra, Gianfranco A1 - Smith, Blair H A1 - Holm, Hilma A1 - Stricker, Bruno H A1 - Ulivi, Sheila A1 - Sotoodehnia, Nona A1 - Apte, Suneel S A1 - van der Harst, Pim A1 - Stefansson, Kari A1 - Munroe, Patricia B A1 - Arking, Dan E A1 - Lo, Cecilia W A1 - Jamshidi, Yalda AB -

BACKGROUND: Genome-wide association studies conducted on QRS duration, an electrocardiographic measurement associated with heart failure and sudden cardiac death, have led to novel biological insights into cardiac function. However, the variants identified fall predominantly in non-coding regions and their underlying mechanisms remain unclear.

RESULTS: Here, we identify putative functional coding variation associated with changes in the QRS interval duration by combining Illumina HumanExome BeadChip genotype data from 77,898 participants of European ancestry and 7695 of African descent in our discovery cohort, followed by replication in 111,874 individuals of European ancestry from the UK Biobank and deCODE cohorts. We identify ten novel loci, seven within coding regions, including ADAMTS6, significantly associated with QRS duration in gene-based analyses. ADAMTS6 encodes a secreted metalloprotease of currently unknown function. In vitro validation analysis shows that the QRS-associated variants lead to impaired ADAMTS6 secretion and loss-of function analysis in mice demonstrates a previously unappreciated role for ADAMTS6 in connexin 43 gap junction expression, which is essential for myocardial conduction.

CONCLUSIONS: Our approach identifies novel coding and non-coding variants underlying ventricular depolarization and provides a possible mechanism for the ADAMTS6-associated conduction changes.

VL - 19 IS - 1 ER - 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 -