© 2014 Nature America, Inc. All rights reserved. A A full list of authors and affiliations appears at the end further of the paper. and phenotypes, human other on or eQTLs) as tissues (acting various in expression on effects interval– have QT SNPs associated whether determined LQTS, elusive genetically 33,316 with to probands in up analysis in mutational completed genotyping individuals, additional targeted with ancestry European of performed an expanded meta challenging. more QT been has population general the in underlying variation causal the of Identification elusive. genetically remaining ~20% and LQT4–LQT13 to due cases of <5% in mutations from stemming cases LQTS of 75% with reported, been have genes susceptibility LQTS 13 in mutations rare of far, hundreds Thus loci. value of both approaches and the overlap of common and rare variant boring QT GWASand LQTS of mendelian with of families studies linkage wide QTGEN QTSCD the including sizes sample large in (GWAS) studies and gene genome candidate through detected been QT in ms/allele) (~1–4 increments modest (ref. 30–40% of estimates heritability with ms), 460 to 380 from (ranging distributed normally is interval QT continuous in variation viduals, or channels channel ion encoding genes in ms) >~20–100 of mutation per tions of strong effect (increase or decrease, respectively, in QT interval LQTS and Mendelian short therapy. medication of effect side a as arrhythmia fatal and risk SCD of increased of and respectively, repolarization, myocardial ated electro­ the on interval QT are non (ECG) cardiogram the of shortening and Prolongation new . requiring loci highlight we mendelian risk The calcium signaling pathways in myocardial repolarization Genetic association study of QT interval highlights role for Nature Ge Nature Received 10 June 2013; accepted 29 May 2014; published online 22 June 2014; Here GWASthe QT Interval–International (QT Consortium genome both in independently discovered been have loci Several

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© 2014 Nature America, Inc. All rights reserved. of association( different fromthenearestgenelisted.Lociatwhich aSNP(indexorsecondary)closeproxy( Interactors fromimmunoprecipitation(IP)experiments areshownfrommousecardiactissueusingfivebaits(K1, KCNQ1;K2,KCNH2;CV, CAV3; CA,CACNA1C;S1,SNTA1) withproteinidentifiedinparentheses if in leftventricleforthesentinelSNP).Protein-protein interactor(PPI)relationshipsfornearbygenestoinlocipreviously establishedtoinfluencemyocardialrepolarizationareprovided ( proxy with1.0> For agivenSNP, theeffectivesamplesizeissumofproduct ofthecohort-specificsamplesizeandimputation quality(rangingfrom0to1).Functionshownforcodingvariantswith Common geneticvariantsatlociassociatedwithQT interval( PRKCA MKL2 CREBBP USP50-TRPM7 ANKRD9 KLF12 ATP2A2 FEN1-FADS2 GBF1 AZIN1 LAPTM4B NCOA2 CAV1 GMPR GFRA3 SMARCAD1 SLC4A4 C3ORF75 SPATS2L TTN-CCDC141 SP3 TCEA3 New loci KCNE1 KCNJ2 LIG3 CNOT1 LITAF KCNQ1 KCNH2 SLC35F1-PLN SCN5A-SCN10A SLC8A1 ATP1B1 NOS1AP RNF207 Previously discoveredloci Nearest gene T Nature Ge Nature able able 1 c S ommon ommon genetic variants at loci associated with Q upplementary r n 2 >0.8(-p)tothesentinelSNP. eQTLtranscriptsareshownifassociated at etics rs11153730 rs6793245 rs12997023 rs10919070 rs12143842 rs846111 rs9892651 rs246185 rs1296720 rs3105593 rs2273905 rs728926 rs3026445 rs174583 rs2485376 rs1961102 rs11779860 rs16936870 rs9920 rs7765828 rs10040989 rs3857067 rs2363719 rs17784882 rs295140 rs7561149 rs938291 rs2298632 rs1805128 rs1396515 rs1052536 rs246196 rs735951 rs7122937 rs2072413 SNP

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© 2014 Nature America, Inc. All rights reserved. variant variant loci interact physically with known myocardial repolarization at common by genes encoded proteins that We evidence sought next Protein-protein alone. observations these from determined be cannot individuals these in pathogenesis LQTS to contribute alleles loss two these not or QTc.Whether normal a had who proband’s father, the in absent QTc,was and normal a had whom of both brother, and proband’s mother the in found was mutation The of a QTc symptoms. basis on the without ms of 500 diagnosed LQTS The QTc. normal a had and mutation the lacked proband’s the father malities; mutant allele and had borderline QTc prolongation and T wave abnor (QTc) of 492 ms without symptoms. The proband’s QT mother rate–corrected carried the heart a of basis the on diagnosed LQTS with girl The product. protein resulted in and frameshifts and premature truncation of the corresponding p.Ile276fs*281) (encoding ( to function protein to disruptive be are predicted several array; Chip Exome the on included or (ESP) Project Sequencing Exome the by whole whom on individuals ( ancestry acids present in cases but not in Note Supplementary ( genes six these in variants sequence splice or exonic rare for genes, LQTS1–LQTS3 the in mutations cally diagnosed LQTS on the basis of the Schwartz score, but free from We with clini mutation screening. individuals 298 unrelated studied ( CAV1 genes six flux, ion in involvement or expression cardiac absence of multiple nearby genes in the associated interval and known of to proximity association, the signal significance, of basis statistical LQTS mendelian unrecognized the new QT interval–associated loci might likewise contain previously of some that hypothesized we LQTS, to relevant genes in mutations QT common of ( studies LQTS previous monogenic cause to and established previously current genes five include the in found loci variant Common LQTS Predicted functionbyPolyphen2(benign,possiblydamagingorprobablydamaging)SIFT(tolerated isalsoindicated.See chip arraydesignedfromexomesequencingof>12,000multi-ancestrysamples(numberalternateallelesshown) andintheExomeSequencingProject(alternateallelecountspertotalnumberofindividualsshown). Six genes( TRPM7 TRPM7 TRPM7 TRPM7 TRPM7 SRL SRL SRL SLC8A1 SLC8A1 SLC8A1 ATP2A2 ATP2A2 Gene T Nature Ge Nature Weproteins. a protein have constructed KCNQ1 Table able able 3 Of Of the 13 variants that altered amino acids, 2 mutations in , ,

proband CAV2 ATP2A2 3 c and and , KCNH2 Table andidate andidate gene mutational screening TRPM7 n Chr. 15:50,884,280 Chr. 15:50,884,406 Chr. 15:50,884,537 Chr. 15:50,935,731 C Chr. 16:4,256,384 Chr. 16:4,256,754 Chr. 16:4,256,990 Chr. 2:40,342,664 Chr. 2:40,397,450 Chr. 2:40,656,318 110,765,554 C Chr. 12:110,734,419 Position (hg19) , hr. 15:50,955,189 hr. 12:110,765,553– , , etics CAV1 Supplementary Note Supplementary SLC8A1 -

3 interval variants at loci with established rare coding coding rare established with at loci variants interval , mutation

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mutation was detected in a in 6 detected was mutation networks and - TRPM7 - ≥ exome sequencing was performed performed was sequencing exome associated genes. Weassociated on selected, the Exon 300 300 controls of the same continental 26 26 26 10

TRPM7 and TRPM7 5 2 7 2 2 6 1 8 5 ). Supplementary Table 17 Table Supplementary ) at5lociwerescreenedforaminoacid–alteringvariantsin298LQTScasesandcomparedto>300controlsof thesameancestry, presenceonanexome KCNJ2 ) ) from five new loci for coding - protein interaction network network interaction protein c.4152A>T c.4026A>T c.3895A>C c.341A>T c.58_59insA c.2566C>T c.1409G>A c.1177G>T c.2651T>G c.2009C>T c.1104C>T c.826_827insA c.340A>G (encoding p.Ile19fs*59) p.Ile19fs*59) (encoding Nucleotide change ). Given the coexistence - year

- old girl with with girl old - p.Leu1384Phe p.Glu1342Asp p.Ser1299Arg p.Asp114Val p. p.Arg856Cys p.Arg470Lys p.Gly393Cys p.Val884Gly p.Pro670Leu p.Ala368Val p. p.Asn114Asp of Amino acid I I le19fs*59 le276fs*281 change - - ATP2A2 function function ATP2A2 year and and - - site site old old

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of cases Number causal genes underlying the QT the underlying genes causal the as intervals associated relevant the in others not and genes these implicates strongly repolarization myocardial underlying currents of the mediators known with loci by at genes QT interval–associated and 1), (caveolin Consistent with the known relationships among several of the mende QT common lian LQTS algorithm from the InWeb database ( ei) wih euae SRAa n cardiomyocytes in SERCA2a regulates which menin), including permutation), using significant enrichment compared to random expectation ( a LQTS, with associated genes mendelian 5 with the by encoded proteins interact physically that GWAS our by identified loci 10 from genes 12 by Weencoded proteins found spectrometry. mass tandem high by with interact they proteins identified KCNH2 LQTS mendelian by the encoded proteins Lundby by paper accompanying an QT in involved functionally are LQTS with associated genes mendelian of interactors that gests and yet to ( be associations discovered true include associated than more expected by chance (rank were proteins interacting that found We regions. in those genes compared to all genes in the genome from the non 35 loci already identified) and tested for enrichment of association scores to association proteins assigned all interacting (except in those be nonetheless might network for even if enriched association, not at genome seed the with directly interacting and (hypergeometric expectation null to compared the enrichment significant representing loci, new seven CAV1 study. ( current We the in interactors eight found identified tions could help identify candidate genes within any of the 22 new loci proteins seed and protein these investigated whether Note direct connections, ( was observed interconnectivity significant lian genes, 1 2 1 1 1 1 1 1 1 1 1 1 1 This conclusion is further supported by by supported further is conclusion This Supplementary Note Supplementary Supplementary Note Supplementary ATP1B1

). We thus identified 606 proteins interacting directly with the the with directly interacting proteins 606 identified We thus ). , , CAV2 In controls , , (yes/ no) CACNA1C 2 - No No No No No No No No No No No No No 7 associated associated genes and 7 loci harboring previously identified , we seeded the network with the first 12 known mende known 12 first the with network the seeded we , ( PLN - , , interval variants (but not known mendelian genes) mendelian known not (but variants interval Table PRKCA

S (phospholamban), which also regulates SERCA2a, SERCA2a, regulates also which (phospholamban), upplementary Note Alt allelesinExome P , , = 0.008 for indirect connections; Chip (yes/no) CAV3 1 ). Molecular interactions of proteins encoded encoded proteins of interactions Molecular ). , , SLC8A1 No No No No No No No No No No No No No Supplementary Note ). ). Protein network interaction analysis sug ). We hypothesized that the other proteins proteins other the that We ). hypothesized and - interval duration. interval fordetails. - sum sum SNTA1 - ATP2A2 , , interval association. interval ATXN1 P = 0.03; = 0.03; P et al. et No No No No No 1/4,915 No No No No 24/5,379 No No In ESP = 0.00012), suggesting that they from mouse cardiac tissue and (SERCA2a), (SERCA2a), 2 , , 8 - . We immunoprecipitated We . immunoprecipitated associated genes genes associated ETF1 Supplementary Table 18 Supplementary in vivo in Possibly damaging,tolerated Benign, tolerated Benign, tolerated Probably damaging,damaging S Probably damaging,tolerated Benign, tolerated Probably damaging,damaging Probably damaging,damaging Benign, damaging Probably damaging,tolerated S Benign, tolerated - - top top Supplementary Fig. 4 Supplementary ) performance orbitrap orbitrap performance wide significance. We wide significance. 2 6 and and . Using the DAPPLE PolyPhen, SIFT s e l c i t r A data presented in in presented data - Supplementary protein protein interac SGOL2 P SRL = 0.0006 for = 0.0006 29– P - = 1 × 10 associated (sarcalu 3 ATP2A2 KCNQ1 1 , , ) from from ) CAV1 3 −6 , 4  ­ ­ ­ ­ ­ , , .

© 2014 Nature America, Inc. All rights reserved. permeable and has protein kinase function astatin 7 protein, a six arrhythmias in reduction substantial a strated demon failure heart of model rat a in SERCA2a of overexpression channel (TRPC1) 1 canonical potential receptor sient by haploinsufficiency transient with third a about by in deficits myocardial relaxation and and contractility a protein reduced Ca Serca2 in reduction a showed mice in changes humans, affected cardiac but investigation detailed of heterozygous other or electrocardiographic described has of follicularis keratosis Darier of cause a are mutations SERCA2 Dominant to the centrality of calcium cycling to excitation owing failure heart in implicated is dysregulation its and reticulum, Ca for responsible is a gene in a newly discovered QT interval–associated locus locus ­associated ( phospholamban by regulated negatively ( pump calcium SERCA2b expressed ubiquitously a splicing, alternative by and, pump calcium arrhythmias ventricular to and leads repolarization myocardial delays and its overexpression shortened and arrhythmia action reduced with associated is exchanger Na the of inhibitor an of administration fact, In fibrillation. de torsade pointes and including ventricular arrhythmias lethal tially activity, and (EADs) to triggered leading poten after depolarizations action Ca on impact profound particular, in and, balance effect cation depolarizing delicate this of net Disruption a of repolarization). prolonging expense (potentially the at balance, cation even Na a Ca The locus). by encoded is which of by is myocyte an counterbalanced Naactive Na The contraction. myocardial halt to reticulum Ca so, less and, intervals QT prolonged mogenic Timothy syndrome (LQT8) that is associated with extremely L the in gain mutations fact, In substrate. lethal potentially and mogenic arrhyth highly a and electrocardiogram on interval QT prolonged potential subsequent a action repolarization, myocyte cardiac ventricular in the delays to of leads phase plateau the during current ( contraction myocardial to leading reticulum, sarcoplasmic the from Ca by sustained Na is and with influx begins depolarization Cellular fluxes. channel ion nated coordi multiple of interplay the requires second per once average the in loci several at Note genes Supplementary of description detailed (see mogenic an process having cellular is arrhyth as of which derangement the the QT interval, the underlies that repolarization, signaling myocardial calcium in role highlight important transcriptomic data genomic, of proteomic analysis and integrated our Altogether, DISCUSSION s e l c i t r A  upeetr Fg 5 Fig. Supplementary TRPM7 ATP2A2 potassium of efflux from results repolarization myocyte Normal on myocyte ventricular the of relaxation and activation Electrical + /Ca - - potential duration in models of LQTS of models in duration potential White disease (MIM (MIM disease White 2+ encodes the widely expressed transient receptor channel mel encodes the SERCA2a cardiac sarcoplasmic reticulum reticulum sarcoplasmic cardiac SERCA2a the encodes exchanger (NCX1, encoded by by encoded (NCX1, exchanger 2+ 3 2+ , 4 that enters the myocyte is counterbalanced by by counterbalanced is myocyte the enters that , Ca ; 6 - . In turn, . In turn, type Ca type - ). 2+ transmembrane molecule that is Mg 2+ 3 sequestration by the cardiac sarcoplasmic sarcoplasmic cardiac the by sequestration 3 ATP1B1 2 . rlne iwr (eoaiig Ca (depolarizing) inward Prolonged ). is actively taken up by the sarcoplasmic sarcoplasmic the by up taken actively is 5 . . Supplementary Fig. 5 Fig. Supplementary - 2+ potential duration, formation of early early of formation duration, potential PLN 12420 2+ channel lead to the highly arrhyth highly the to lead channel 3 8 influx, which triggers Ca triggers which influx, , at a common variant QT variant common a at , as well as upregulation of the tran the of upregulation as well as is negatively regulated by regulated negatively is 0 ) 3 7 . No study that we are aware aware are we that study No . 2+ 41 oesai cn ae a have can homeostasis PLN , + 4 /K 2 SLC8A1 . The 4 - 3 ), also a QT interval– QT a also ), + 0 contraction coupling. 3 . ATPase (a and heart failure heart and touchtone ). The protein is is protein The ). + that enters the the enters that ) to ensure net net ensure to ) 3 - 9 3 of . Moreover, . 6 2+ . SERCA2a - 2+ β and Ca Serca2 - function function PRKCA ( subunit interval interval release release nutria + /Ca +/− 3 2+ 2+ 2+ 2+ 4 + ­ ­ ­ ­ ­ ­ ­ ­ ) , ,

nelig QS s ciia efco o moada repolariza myocardial of effector Ca tion. critical a as LQTS underlying signaling. calcium involving ences or potentially in through ongoing effects adulthood, functional differ developmental through leads repolarization humans myocardial in altered to TRPM7 that possibility the raises work previous in late phenotype aberrant cardiogenesis recognizably no and midcardiogenesis; in block heart and cardiomyopathy, repolarization delayed cardiogenesis; early in cardiomyopathy lethal in targeted recently, TRPM7 TRPM7 increased with associated is in steering cell involved migration microdomains), calcium intracellular high (focally ers flick calcium underlying influx calcium into stretch mechanical of transduction mediates TRPM7 fibroblasts, lung embryonic human including cycling, calcium in involved genes several of downregulation to leads myocytes ventricular onic thymogenesis mal nor disrupts deletion targeted lethal; embryonic is mice in deletion skeletogenesis, defective stones kidney demonstrates mutant TRPM7 zebrafish online ver Note: Any Supplementary Information and Source Data files are available in the the of in version available are references associated any and Methods M population. general the in arrhythmias ventricular lethal from death prevent and to predict approaches new expose to promises arrhythmogenesis of of mechanisms elucidation fundamental The process. electrophysiological critical this of ing plementary experiments represent a quantum leap in our understand QT the gene underlies which certainty with say cannot we medi Although to effects. repolarization likely ate the loci these at genes specific highlight to approaches to of 35. loci Wenumber variant common total the diverse have used arrhythmogenesis. to contribute fact in could teins pro some of target discovered the newly that inadvertently therapies existing Conversely, arrhythmia. causing without arrhythmias some treat potentially could repolarization myocardial to contribute that sity to cause other arrhythmias, targeting the newly identified proteins to managementclinical of some arrhythmias because of their propen responding to anti ment. Although derange their from arising consequences pathophysiological the as contribution to repolarization of these Ca on Ca ers contribute to repolarization is unclear, but its involvement in Ca PRKCA loci: atgenes common variant QT interval–associated syndrome tion given the role of the proteins by encoded the mendelian Timothy rare and common genetic variation now of place Ca studies our However, coupling. ­contraction et Potassium flux has long been recognized through rare mutations rare through recognized been long has flux Potassium We have identified 22 new QT interval–associated loci, bringing bringing loci, interval–associated QT new 22 identified We have Much work to the be physiological normal will needed understand 4 6 suggests a potential role in localized Ca h 2+ ods , knockdown results in loss of spontaneous Ca - sion of the pape 2+ SRL sensitive potassium sensitive channels potassium or the Na – has been recognized as a central mediator in excitation in mediator central a as recognized been has the pape the associated gene (LQT8) and 4 KCNH2 3 and abnormal melanophores and abnormal a SLC8A1 DVANCE ONLINE PUBLICATION ONLINE DVANCE Trpm7 4 r 1 . - r . Targeted cardiac deletion in cultured embry cultured in deletion cardiac Targeted . . arrhythmic agents targeting the I agents targeting arrhythmic 4 ) ) channel have a relatively limited contribution 6 . . In human atrial fibroblasts, atrial fibrillation deletion in mice has been shown to result result to shown been has mice in deletion . How the Mg - interval trait at every locus, these com these locus, at trait every interval 2+ as a central modulator of repolariza CACNA1C - mediated Ca mediated 2+ 2+ /Ca SERCA2a - regulating proteins, as well 2+ 2+ fluxes or indirect effects 4 , as well as the following channel TRPM7 might 4 . Homozygous . Homozygous +

/Ca Nature Ge Nature 2+ 4 2+ 2+ influx, whereas whereas influx, 5 . In migrating migrating In . 4 exchanger. ATP2A2 influx Kr 8 . . In total, this (LQT2, cor (LQT2, 4 2+ n 7 Trpm7 online online . . More , , etics flick PLN - ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ,

© 2014 Nature America, Inc. All rights reserved. preparation: O.T.R., M. Kähönen, J.S.V. Analysis: T.J.L., O.T.R., M. Kähönen, J.S.V., M. Kähönen, J.S.V. Genotyping: T.J.L., N.M. Genotyping: T.J.L. Phenotype Obtained funding: Y.J., T.D.S. Data acquisition: T.D.S. Statistical analysis and interpretation: I.M.N., H.S., Y.J. Obtained funding: S.B.F., U.V. S.B.F. Statistical analysis: U.V., M.D., M.R.P.M. Interpretation: U.V., M.D., S.B.F. principal investigators: D.S., M.U. E.G.L., A. Mulas, M.O., S.S., D.S., K.V.T., M.U. study Overall and supervision B.H.S. M.E., B.H.S. Obtained funding: A.H., J.C.M.W., A.G.U., B.H.S. Study supervision: J.A.K., A.H., J.C.M.W., B.H.S., A.G.U. Statistical analysis: M.E. Interpretation: Study concept and design: M.E., B.H.S. Data acquisition: M.E., O.H.F., B.P.K., Obtained funding: G.N., D.J.v.V., F.W.A., P.v.d.H. M.P.v.d.B., D.J.v.V., G.N. Genotyping and data analysis: F.W.A., I.M.L., P.v.d.H. preparation: A.F. Data preparation and analysis: D.E. J.F.W. H.C., J.F.W. GWAS analysis: P.N. funding: J.F.W.Raised study Overall supervision: F.D.G.M., C.F. P.P.P. Study genotypingsupervision, and data coordination: A.A.H. Data analysis: L. Franke. Phenotyping: R.A.d.B., P.A.v.d.V. Genotyping: L. Franke. Analyses: I.M.N. and S. Kääb, T.M., M.W. study Overall principal investigator: A. Peters. genetic analysis: C.G., M.M. measurementcollection, and interpretation: M.F.S., S. Perz, B.M.B., E.M. Primary QT Overall project A. supervision: Pfeufer. Genotyping oversight: T.M. ECG study Overall design and principal investigators: K. R.E., generation: M.M.N., P.H., T.W.M. Data analysis: L.E., P.H., T.W.M., M.M.N. M.A.N. HealthABC: data andcollection analysis: K.K.K. Principal investigator and V.S.supervision: genotyping: M.P. ofDesign ECG study, analysis and interpretation: L.O. Genetic ECGs: A.J. Electrocardiographic measurements: K.P. GWAS and replication control: dataA.M.L. Primary analysis: A. Marjamaa. Phenotyping, including G.S. supervision: M. Bobbo. analysis: Primary A. Iorio. Statistical analysis: A.P.D.A. studyOverall analysis: X.Y., funding: M.G.L. C.N. Secured B.A.O. A. Isaacs, B.A.O., J.A.K., A.G.U. study Overall principal investigators: C.M.v.D., case ascertainment: J.C.D. set: M.D.R. Study conception and analysis framework: D.M.R. Algorithm for GWAS analysis: Y.B.R.L.Z., ofSupervision quality control and analysis of data K. Stefansson, U.T., H. Hólm, D.F.G., D.O.A. statistical analysis: D.F.G. Additional analysis and interpretation of results: K. Stefansson, U.T., H. Hólm, D.F.G., D.O.A. Data alignment, imputation and of analyses: A.D.P. design and funding: A.F.W.I.R., phenotype measurement, data andentry field work I.K., O.P.supervision: Study B.M.P. interpretation: J.C.B., N.S. ofSupervision analyses: B.M.P. Funding for GWAS: B.M.P., N.S. Data B.M.P.,S.R.H., collection: D.S.S. Genotyping: J.I.R. Analysis, and/orcollection statistical analysis: S.U. Sample and/or data M.C., collection: studyL.Z. Overall P.G.supervision: Data S.J.N. study Overall M. supervision: Brown, M.J.C., P.B.M., N.J.S. M. Brown, M.J.C., P.W.M., P.B.M., N.J.S. Genotyping: P.B.M., S.J.N. Analysis: J.B.S.collection: project L. Overall supervision: Ferrucci. A. Chakravarti. Writing: D.E.A., A. Chakravarti. Analyses: D.E.A., J.S.B., A. Chakravarti, G.E., H. Huang. Steering: D.E.A., A. Parsa, W.S.P. EKGA.R.S. data W.S.P.collection: Analysis: A. Parsa, J.R.O. Interpretation: L.J.L., V.G. GWAS cohorts. AGES: to all coauthors. was in revised critically detail by members of the writing team before circulation respective study groups. The manuscript was written by C.N. T.T.K., P.B.M., C.N. The study design was developed by M.J.A., D.E.A., A. Chakravarti, L.C., P.I.W.d.B., Writing group. approved the manuscript. Author contributions are indicated by cohort and group. All coauthors andrevised A listing full of acknowledgments is provided in the Nature Ge Nature L. AU Acknowledgments - P.L. Obtained funding: T.J.L., O.T.R., M. Kähönen, J.S.V. T H PopGen: SardiNIA: Croatia-Korcula Croatia-Korcula and Croatia-Split: O FHS: HNR: R R MICROS: Amish studies CONT Analysis plan development: C.N. Data andY.L.collection S.R.C., supervision: Data analysis: D.S.E., n Data H.K. collection: Data generation: H.K., T.W.M. data Genetic ORCADES: Recruitment and phenotyping: N.E.E.M., N.F. Genotyping and data C.N. etics ARIC: Health2000: Phenotyping: M.O. Genotyping and data analysis: G.R.A., RIBU deCODE: - C., C., A. Pfeufer, S.L.P., P.J.S. and N.S. in consultation with the - Sample recruitment and overall study principal investigator: C. C. takes overall responsibility for the QT

Study design: A.A., D.E.A., A. Chakravarti, W.H.L.K. Phenotyping: V.G. Data analysis: A.V.S. Oversight: T.B.H., T ADVANCE ONLINE PUBLICATION ONLINE ADVANCE I : Clinical : data Clinical genotypingcollection, and oversight: ERF: ONS Phenotype S.H.W.collection: generation:Genotype - Data D.O.A.,collection: H. Hólm. Study design: N. N. Interpretation of results: C.G., A. Pfeufer, H.P., Young Finns Study: Data analysis, replication genotyping and quality TwinsUK: Analysis: A. Isaacs. Data acquisition: C.M.v.D., DCCT/EDIC: SHIP: Data acquisition: M.D., M.R.P.M., U.V., Study concept and design: H.S., Y.J. CHS: GWAS analysis: C.H. Data collection, - eMERGE: C., C., C.J.O. - C., C., C.J.O., P.A.N., M.G.L. GWAS Study design: J.C.B., S.R.H., Analyses: D.W. Supervision BLSA: Rotterdam Study I and II: Data T.J.L.,collection: O.T.R., Supplementary Supplementary Note PREVEND: FVG: Data curation and Analysis: T.T. Phenotype - BRIGHT: H.J. Data collection: - KORA-F3/S4: C. C. The manuscript - IGC study.

Carlantino: Phenotyping: LifeLines: Phenotyping:

.

characteristic characteristic organization: D.J.T. LQT2 and LQT3 and sample management: C.D. Recruitment, phenotyping E.R.B. and Screening for strategy: mutations in LQT1, and submission: M. Kumari. M. supervision: Kivimaki. Funding:Overall A.D.H. and supervision Overall principal investigator: E.I. B.P. L.K., F. Kronenberg, C.L., B.P., B.S. Study design and principal investigator: preparation: F. Kronenberg, C.L. Data L.K., collection: B.P., B.S. Data analysis: analysis: and supervision S.G. Overall principal investigator: E.I. A.F.D., G.C.M.W. Genotyping: W.K.L. study Overall data supervision, andcollection funding: Study: Study design, data andcollection area disease knowledge: D.S.T. analysis F.N. and expertise: epidemiology Genotyping and Å.T.N. genetic expertise: A. Carracedo. Financial support: A. Carracedo. A. Carracedo. Genotyping: M.T. Analysis: M.T. Interpretation: M. Brion, M. collection: Brion. Study design: M. Brion. Genotyping platform management: Post-MONICA: M.G. biochemical data Genetic, acquisition and statistical analysis: A.G.P. and supervision analysis: A.N.N. Data acquisition, analysis and interpretation: and supervision principal investigator: J.H. K.W.H.M.z.S. Supervision: Study design and analysis: A.K. Study concept, investigator: J.W. and database: M. Knoflach. funding, Supervision, administration and principal and writing: S. Kiechl. DNA preparation: F. Kronenberg, C.L. ECG measurement P.H.W., R.W.M. ECG analyses: P.W.M. genetic resource: A.D.H. study Overall and supervision principal investigators: R.W.M., P.H.W. Data forcollection genetic resource: P.H.W. Development of GWAS above.)entry that contributed to both GWAS and replication genotyping are shown under the SNP genotyped Directly replication cohorts reprint at online available is information permissions and Reprints version of The authors declare competing interests:financial details are available in the studyA.L. Overall J.V.O.supervision: Immunoprecipitation experiments. DAPPLE analysis. free of LQT1, LQT2 and LQT3 mutations: ProgramR.M.H. codevelopment: S.W.S. SRL patientcollection, and selection L.C., molecular screening P.J.S.supervision: gene diagnosis management: F. Kyndt. Patient enrollment: V.P. mutations in LQT1, LQT2 and LQT3 and clinical data J.collection: Barc. LQTS genetic information S.C. collection: B.M.B., E.M. Genotyping: H.P. M.J.A.supervision: D.J.T., A.M. A.B.,collection: N.H., A.A.M.W. Study C.R.B., A.A.M.W.supervision: LQTS mutation Amsterdam:screening. P.v.d.H. Mouse knockout. M. Kellis. ventricle enhancer Left analyses. J. Brandimarto. Statistical analysis: M.M. sample K.M., collection: C.E.M. Sample processing and expression analysis: ventricle eQTLLeft analyses. interpretation: A.D.J. enrichment tests: K. type–specific S.R., Cell Slowikowski. Non-cardiac eQTL analyses. lookup: S.L.P. QRS GWAS: HRGEN: Non-QT trait lookups. CARe-COGENT: the analyses. results. Polygenic analysis: R.D.K. P.I.W.d.B., A. Pfeufer. and C.N. performed quality control and meta Meta-analysis of GWAS and replication. COM mutation screening: A.G., R.I. ULSAM: P s/index.htm Data acquisition, statistical analysis and interpretation: S. Padmanabhan. ET Meta the pape I NG - D., J.R.G. Patient studycollection, design, data review and overall Study N.S. Metasupervision: Genotyping: A. - FI analysis and lookup: studyM.d.H. Overall R.J.F.L.supervision: Data andcollection submission: J.A.H., V.A. Carla: N PIVUS: Enrichment tests: K. S.R., Slowikowski. Candidate gene list: l . Concept, design and analysis: E.J.R. K.L., Supervision: M.J.D. r . A Munich: BRHS: NC Study concept and design: K.H.G., K.W. Genotyping: IA Genotyping: A. L Analysis: R.W.M. Custodian of genetic resource: Study oversight: S. Kääb, A. Pfeufer. Patient collection: I - Data set acquisition: A.S.P., V.E. Analysis and C.S. C.S. Phenotyping: L.L., J.Ä., J.S. Data analysis: S.G. Overall supervision: T.P.C. supervision: Overall Recruitment, NTE Nantes: TRPM7 Analysis: X.W. L.A.B., supervision: Overall Toronto: R - ATP2A2 analysis of GWAS and replication association Proteomic experiments and analysis: ESTS Bruneck: Scientific management:Scientific J.

mutation analysis and interpretation: D.E.A. and S.L.P. independently SLC8A1 - Meta - C.S. C.S. Phenotyping: L.L., J.Ä., J.S. Data analysis: analysis: D.E.A., P.I.W.d.B. Results Cyprus: Identification of patients with LQTS sequencing: S.C. Screening for . . (Author contributions for cohorts Intergene: - Data analysis, interpretation Mayo Clinic: analysis and lookup: J.G.S. sequencing: T.T.K. data Clinical Whitehall Whitehall II: Study concept, funding, Genotyping, data http://ww s e l c i t r A Galicia: LQTS cohort Pavia: MIDSPAN Family Data collection SAPHIR: - - J.S. Clinical, C. supervised C. supervised Patient w.nature.com/ Cohort London:

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© 2014 Nature America, Inc. All rights reserved. C M Jesper V M Vilmundur T D Ben A André M Maximilians Maximilians Universität, Munich, Germany. 30 on Aging, US National Institutes of Health, Baltimore, Maryland, USA. Vanderbilt University School of Medicine, Nashville, Tennessee, USA. Boston, USA. Massachusetts, University of Copenhagen, Copenhagen, Denmark. Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark. 21 Institute of Technology, Cambridge, USA. Massachusetts, USA. Pennsylvania, USA. Massachusetts, 14 Medical Center, Amsterdam, The Netherlands. School of Medicine, Queen Mary University of London, London, UK. School of Medicine, Queen Mary University of London, London, UK. of Groningen, University Medical Center Groningen, Groningen, The Netherlands. Germany. Istituto di Ricerca e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy. The Netherlands. of Harvard and MIT, Cambridge, USA. Massachusetts, 2 1 Andrew Andre Franke C Anna F S M Folkert W C Roberto Insolia Argelia N L Annette Peters Ruth J F K L S Adamo P M Joshua DCCT Jerome I Rotter K COGENT Nature Ge Nature Munich, Germany. Center Center for Human Genetic Research, General Massachusetts Hospital, Boston, USA. Massachusetts, Center for Complex Disease Genomics, Institute McKusick-Nathans of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. tefan teven R ude ude Franke asse asse DZHK DZHK (German Center for Research), Cardiovascular partner site Greifswald, Greifswald, Germany. National Heart, Lung, and Blood Institute (NHLBI) Framingham Heart Study, Framingham, USA. Massachusetts, Cardiology Division, University of Washington, Seattle, Washington, USA. imothy arl-Heinz Jöckel arl hristopher onnie R Bezzina hristine ynke ynke Hofman avid avid arylyn ika anolis anolis artin artin att ichael ichael J Ackerman 146 W K O S O / / K 8 G erdan C ivimaki Department Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. , , Harry W G ikarinen D chlessinger M ED iechl ostra D Uitterlinden L K O

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S ’Adamo G M 5 C onsortium 9 pector N 33 Department Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy. 92 69 , , Pieter A van der Vleuten 126– udnason 26 18 88 49 oravec Institute Institute of Genetic Epidemiology, Helmholtz Zentrum Research Munich–German Center for Health, Environmental Neuherberg, Germany. 18 ewton- , , 22 59 16

, , Broad Broad Institute of MIT and Harvard, Cambridge, USA. Massachusetts, C 35 98 , , 138 5 , , , , M 102 , M Harvard Harvard Medical School, Boston, USA. Massachusetts, 117 , G ADVANCE ONLINE PUBLICATION ONLINE ADVANCE , , , 19 D T ampbell 21 6 , 128 , , Ivana 134 M K 12 , Robert 48 assimo assimo D , , Arthur A 179 aria aria Brion onçalo R onçalo Abecasis homas , , Bouwe P avid avid , , , , 159 107 162 51 103 asper asper , , , Hagen 176 ika , , omingo 63 M , , Hanna Prucha 53 42 26 E 17 150 , Bruno H , D 111 C 26 , , Department Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. , , Fredrik rik Ingelsson , , Johan Ärnlöv , , , , , arkus Perola 39 108 , , Fabiola , , Afshin Parsa 54 M ag ag 88 D heh K M O , – 154 , , , Annamaria Iorio 152 K , 40 , , J 183 ähönen an 147 anuela Uda , , Arnar L C ichael ichael A W S olcic C M , , Yalda Jamshidi , age

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M 186 3 M 68 Hamilton K S helle ustav M , älsch , , Julien Barc 16 32 , , Jacqueline 3 arah arah H Roden , rijthe ühleisen 99 169 , , Arne Pfeufer , N S Institute Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology, Ludwig Maximilians Universität,

15 47 , 101 W 13 25 tricker 165 , , 93 yberg , , , Cardiovascular Health Cardiovascular Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA. , , Andrew 22 O M 129 , N ilde 186 C 24 , , , , Hilma Hólm 121 58 118 S , , zren Polašek L ateo alls 181 135 deCODE deCODE genetics, Reykjavik, Iceland. mith 26 N hristian hristian Fuchsberger 158 79 , 145 , 58 172 130 eopoldo Zelante eopoldo 4 103– , , – W Department Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, ina , 12 , 154 130 , 120 M , , 80 142 163 26 182 136 , , 122 , , 8 114 20 , , , , ild , 139 M E O L , , Yongmei 9 arkus L , Department Department of Biology, Institute Massachusetts of Technology, Cambridge, USA. Massachusetts, C 2 105 , , , 154 , , M , 170 , , Britt , , , each dward , , Peter J , , 56 C , 143 uigi Ferrucci , , Antti Jula ’ O 3 K 123

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M 26 Clinical Clinical Pharmacology, William Harvey Research Institute, Barts and the London 145 122 , , S avis usan usan R Heckbert 140 G tefansson 33 , 26 T S C W immo immo cherer 100 28 T , 117 31 okhtari 154 6 reiser , , inagra , , Jeffrey R , Raitakari , ornelia ornelia horsteinsdottir , , 123 55 , , 154 , , Antonella right T 7 , , 23 153 , , Bernhard Paulweber S C Institute Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, 160 , , Raimund M , , 25 , homas The The Danish National Research Foundation Centre for Cardiac Arrhythmia, tefan 56 27 115 S 171 , , HR L 19 hrysoula hrysoula , Albert , HofmanAlbert Cardiovascular Research Cardiovascular Center, General Massachusetts Hospital, G , undström W elanie elanie , , Uwe Völker yudmyla yudmyla , , Vincent Probst , , Valur Computer Computer Science and Artificial Intelligence Laboratory, Massachusetts M 144 64 K 31 , , asparini , Aroon 50 110 de Bakker 148 S

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© 2014 Nature America, Inc. All rights reserved. Germany. Cardiology, University Hospital of Essen, University Essen, Duisburg-Essen, Germany. Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland. Helsinki University Central Hospital, Helsinki, Finland. Health and Welfare, Helsinki, Finland. National Institute on Aging, US National Institutes of Health, Bethesda, Maryland, USA. Compostela, Spain. Surgical and Health Sciences, University of Trieste, Trieste, Italy. Hospital, Boston, USA. Massachusetts, USA. Massachusetts, Nashville, Tennessee, USA. Tennessee, USA. Informatics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA. Diagnostic Centre, London, UK. Medical Center, Torrance, California, USA. 98 Health Research Institute, Group Health Cooperative, Seattle, Washington, USA. Epidemiology, University of Washington, Seattle, Washington, USA. Luther University Halle-Wittenberg, Halle, Germany. Germany. S Leicester, UK. Pharmacology, University of Cambridge, Addenbrooke’s Hospital, Cambridge, UK. Baltimore, Maryland, USA. Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA. 81 of Maryland School of Medicine, Baltimore, Maryland, USA. Missouri, USA. Washington University in St. Louis, St. Louis, Missouri, USA. Human Sciences, University of Manchester, Manchester, UK. USA. Massachusetts, 72 Prague, Czech Republic. 69 Genotipado, Centro de Biomédica Investigación en Red de Enfermedades Raras, Universidade de Santiago de Compostela, Santiago de Compostela, Spain. Technology, Limassol, Cyprus. Salzburg, Austria. Martin Luther University Halle-Wittenberg, Halle, Germany. Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK. Molecular Resource of Infrastructure Sweden (BBMRI), Gothenburg, Sweden. London, UK. Science, Cardiovascular University College London, London, UK. Stockholm, Sweden. INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France. Mayo Clinic, Rochester, Minnesota, USA. Rochester, Minnesota, USA. 52 Genetics and Molecular Medicine, Western General Hospital, Edinburgh, UK. 49 Lübeck, Germany). Medicine, Tampere, Finland. Ontario Institute for Cancer Research, Toronto, Ontario, Canada. 44 Medical Center Research Institute, San Francisco, California, USA. Reykjavik, Iceland. University Medical Center Groningen, Groningen, The Netherlands. Helsinki, Finland. Centre for Research), Cardiovascular partner site Munich Heart Alliance, Munich, Germany. 34 s e l c i t r A 1 Cardiovascular Science, Cardiovascular Faculty of Population Health Sciences, University College London, London, UK. Utrecht, The Netherlands. Campus Kiel, Kiel, Germany. Experimental Medicine, Christian Albrechts University of Kiel, Kiel, Germany. Care, University of Glasgow, Glasgow, UK. Ontario, Canada. 143 141 Excellence in Research of Hereditary Disorders, Jeddah, Saudi Arabia. Friedberg, Germany. Munich, Germany. Helmholtz Zentrum Research München–German Center for Health, Environmental Neuherberg, Germany. Medical Imaging, Helmholtz Zentrum Research München–German Center for Health, Environmental Neuherberg, Germany. Molecular Epidemiology, Helmholtz Zentrum Research München–German Center for Health, Environmental Neuherberg, Germany. Academy, University of Gothenburg, Gothenburg, Sweden. Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway. 128 Addenbrooke’s Hospital, Cambridge, UK. 125 upplementary upplementary Note 0 Institute Institute for Translational Genomics and Population Sciences, Los Angeles Biomedical Research Institute at of Harbor–University California, Los Angeles (UCLA) Geriatric Research and Education Clinical Center, Veterans Medical Administration Center, Baltimore, Maryland, USA. Harvard and Bioinformatics Integrative Genomics, Boston, USA. Massachusetts, Department of Neurology, Innsbruck Medical University, Innsbruck, Austria. Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA. Institute of Clinical Molecular Biology, Christian Albrechts University of Kiel, Kiel, Germany. Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA. Institute of Medical Informatics, Biometry and Epidemiology, Chair of Genetic Epidemiology, Ludwig Maximilians Universität, Munich, Germany.

Department Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada. Biomedical Sciences, St George’s University of London, London, UK. Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA. Department of Biomedicine, University of Basel, Basel, Switzerland. 123 91 Department Department of Pharmacology, Ernst Moritz Arndt University of Greifswald, Greifswald, Germany. Institute Institute of Human Genetics, University of Bonn, Bonn, Germany. 61 87 Department Department of Medical and Clinical Genetics, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. 78 Division Division of Genetic Epidemiology, Innsbruck Medical University, Innsbruck, Austria. 145 104 Laboratory Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, Bethesda, Maryland, USA. 66 37 136 48 41 113 . . Cyprus International Cyprus Institute International for and Environmental Public Health in association with the Harvard School of Public Health, Cyprus University of Department Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland. Center Center for Statistical Genetics, Department of University Biostatistics, of Michigan, Ann Arbor, Michigan, USA. Department Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA. 138 58 Institute Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Essen, Duisburg-Essen, Germany. Genetic Genetic Epidemiology Unit, Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands. 89 108 74 Department Department of Dermatology and Allergy, Technische Universität München, Munich, Germany. Department Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden. Center Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia. Department Department of Cardiology, Lund University, Lund, Sweden. Division Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, USA. Massachusetts, Department Department of Clinical Genetics, Academic Medical Center, Amsterdam, The Netherlands. Department Department of Mathematics and Statistics, Boston University, Boston, USA. Massachusetts, 71 151 Department Department of Medicine, Division of Genetics, Brigham and Women’s Hospital, Harvard Medical School, Boston, USA. Massachusetts, 84 106 54 47 150 Electrocardiology, University of Glasgow Institute of and Cardiovascular Medical Sciences, Royal Infirmary, Glasgow, UK. Department Department of Cardiology, Division of Heart and Lungs, University Medical Centre Utrecht, Utrecht, The Netherlands. 67 Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Sanofi Sanofi Research and Development, Paris, France. Center Center for Biomedicine, European Academy (EURAC), Bozen/Bolzano Bolzano, Italy (affiliated institute of the University of Lübeck, 101 Durrer Durrer Center for Research, Cardiogenetic Cardiology Interuniversity Institute of Heart The Institute, Netherlands–Netherlands Cyprus Cardiovascular Cyprus and Cardiovascular Educational Research Trust, Nicosia, Cyprus. Department Department of Medicine, Division of Cardiology, Landspitali University Hospital, Reykjavik, Iceland. 116 110 127 55 Department Department of Medicine, University of Helsinki, Helsinki, Finland. 147 99 Cardiovascular Department, Cardiovascular Ospedali Riuniti and University of Trieste, Trieste, Italy. Institut Institut du Thorax, Centre Hospitalier de Universitaire Nantes, Université de Nantes, Nantes, France. Mindich Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA. Department Department of Public Health, Faculty of Medicine, University of Split, Split, Croatia. Centre Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK. 93 Medical Medical Genetics Unit, Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy. 118 Public Public Health Genomics Unit, National Institute for Health and Welfare, Helsinki, Finland. 131 65 80 77 76 Institute Institute of Human Genetics, Technische Universität München, Munich, Germany. Second Second Department of Internal Medicine, Landeskliniken, Paracelsus Medical University/Salzburger Program Program for Personalized and Genomic Medicine, University of Maryland, Baltimore, Maryland, USA. Department Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Computational and Computational Systems Biology Program, Division of Biology and Biomedical Sciences, 46 60 112 Department Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Department Department of Primary Care and Population Health, University College London, Royal Free Campus, 39 43 95 Fundación Fundación Publica Galega de Medicina Xenómica, Servicio Galego de Saude, Santiago de Icelandic Icelandic Heart Association, Kopavogur, Iceland. Division Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. 130 Department Department of Health Services, University of Washington, Seattle, Washington, USA. 140 126 142 Department Department of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Cardiovascular and Cardiovascular Cell Sciences Institute, St George’s University of London, London, UK. MRC MRC Epidemiology Unit, University of Cambridge, Institute of Metabolic Science, The The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario, Canada. 51 149 63 70 120 124 57 Institute Institute for Maternal and Child Health, “Burlo Garofolo” Trieste, Trieste, Italy. BHF BHF Glasgow Research Cardiovascular Centre, Institute of and Cardiovascular Medical Centre Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, 97 Department Department of Internal Medicine III, University Medical Center Schleswig-Holstein, 107 Department Department of Medical Epidemiology and Karolinska Biostatistics, Institutet, Estonian Estonian Genome Center, University of Tartu, Tartu, Estonia. 86 Division Division of Medical Genetics, University Hospital Basel, Basel, Switzerland. 103 73 90 Department Department of Medicine, University of Washington, Seattle, Washington, USA. Department Department of Science, Cardiovascular University of Leicester, Glenfield Hospital, Department Department of Boston Biostatistics, University School of Public Health, Boston, Partners Partners HealthCare Center for Personalized Genetic Medicine, Boston, Division Division of Cancer Epidemiology, German Cancer Research Centre, Heidelberg, 122 Department Department of Medicine, Vanderbilt University School of Medicine, Nashville, 144 115 Department Department of Genomics, Life and Brain Center, University of Bonn, Bonn, 83 The The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, Department Department of Biomedical Engineering, Johns Hopkins University, 36 Chronic Chronic Disease Epidemiology and Prevention Unit, National Institute for 53 Research Research Programs Unit, Molecular Medicine, University of Helsinki, Department Department of Pediatrics, Division of Pediatric Cardiology, Mayo Clinic, 50 64 Medical Medical Research Council (MRC) Human Genetics Unit, Institute of Institute Institute of Medical Epidemiology, and Biostatistics Informatics, 105 88 38 Full Full list of members and affiliations appear in the Department Department of Epidemiology, University of Groningen, Office Office of Personalized Medicine, Vanderbilt University, a 153 68 135 DVANCE ONLINE PUBLICATION ONLINE DVANCE Grupo Grupo de Medicina Xenómica, Centro Nacional de Department Department of Internal Medicine, University of Groningen, 92 Christine Christine Kühne–Center for Allergy and Education, 117 Department Department of Medicine III, Medical Faculty, Martin Department Department of Medicine, Division of Cardiology, 139 137 109 Princess Princess Al-Jawhara Al-Brahim Centre of Department Department of Medicine, Hospital of Friedberg, 40 82 Cardiology Cardiology Division, General Massachusetts Faculty Faculty of Medicine, University of Iceland, 45 Division Division of Epidemiology and Community 134 Informatics Informatics and Biocomputing Platform, 148 114 Institute Institute of Epidemiology II, 111 129 79 Biobank Biobank PopGen, Institute of Laboratory Laboratory of Neurogenetics, 100 Clinical Clinical Department of Medical, Department Department of Biostatistics, 133 Department Department of Medicine, University 146 Vascular Screening and Institute Institute for Biological and General General Practice and Primary 102 75 Department Department of Biomedical 94 62 Faculty Faculty of Medical and Department Department of Biobanking Biobanking and

121 132 Nature Ge Nature 56 42 Department Department of 35 Institut Institut du Thorax, California California Pacific 152 Research Research Unit of DZHK DZHK (German 119 85 Institute Institute of Clinical Clinical Institute Institute for 59 Institute Institute of 96

Group Group n etics © 2014 Nature America, Inc. All rights reserved. Pennsylvania Pennsylvania State University, University Park, USA. Pennsylvania, Winston-Salem, North Carolina, USA. Children Research Institute, Toronto, Ontario, Canada. of Lübeck, Lübeck, Germany. (INM-1), Structural and Functional Organization of the Brain, Genomic Imaging, Research Centre Juelich, Juelich, Germany. University of London, London, UK. Spain. e Enfermidades Cardiovasculares Complexo Oftalmolóxicas, Hospitalario de Universitario Santiago de Compostela, Servicio Galego de Saude, Santiago de Compostela, Medicine, University of Turku, Turku, Finland. 166 University, Uppsala, Sweden. King’s College London, London, UK. for Genetics and Functional Genomics, Ernst Moritz Arndt University Greifswald, Greifswald, Germany. Institutes of Health, Baltimore, Maryland, USA. Consiglio Nazionale delle Ricerche, Monserrato, Cagliari, Italy. 157 Medical Informatics, Erasmus Medical Center, Rotterdam, The Netherlands. University Medical Center Groningen, Groningen, The Netherlands. Nature Ge Nature addressed addressed to C.N.-C. ( Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands. Minnesota, USA. Children, General Massachusetts Hospital, Boston, USA. Massachusetts, Analysis, Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark. Department Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland. First Department of Internal Medicine, Salzburg, Landeskliniken, Paracelsus Austria. Medical University/Salzburger 170 Global Global Epidemiology, AstraZeneca Research and Development, Mölndal, Sweden. n etics 184 Institute Institute for and Bioinformatics Systems Biology, Helmholtz Zentrum, Munich, Germany.

[email protected] ADVANCE ONLINE PUBLICATION ONLINE ADVANCE 175 165 Department Department of Neurology, General Central Hospital, Bolzano, Italy. Department Department of Clinical Physiology, Tampere University Hospital and University of Tampere School of Medicine, Tampere, Finland. 172 163 178 Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK. School School of Health and Social Sciences, Dalarna University, Falun, Sweden. Human Human Genetics Research Centre, St George’s University of London, London, UK. 168 160 Department Department of Medicine, Turku University Hospital and University of Turku, Turku, Finland. Institute Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany. ). 177 Department Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest University,

159 Laboratory Laboratory of Genetics, Intramural Research Program, National Institute on Aging, US National 154 180 Netherlands Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands. Inspectorate Inspectorate of Health Care, The Hague, The Netherlands. 183 156 Department Department of Medicine, Division of Diseases, Cardiovascular Mayo Clinic, Rochester, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands. 186 171 These authors contributed equally to this work. Correspondence should be 182 Division Division of Population Health Sciences and Education, St George’s Pediatric Pediatric Surgical Research MassGeneral Laboratories, Hospital for 176 162 Genetics Genetics and Genome Biology Program, The Hospital for Sick 167 Department Department of Twin Research and Genetic Epidemiology, Research Research Centre of Applied and Preventive Cardiovascular 185 Department Department of Epidemiology, Julius Center for Health 164 173 Department Department of Medical Sciences, Uppsala 158 Institute Institute of Neuroscience and Medicine Istituto Istituto di Ricerca Genetica e Biomedica, 179 174 Center Center for Systems Genomics, Department Department of Neurology, University 181 Center Center for Biological Sequence 161 169 Interfaculty Interfaculty Institute Xenética Xenética de s e l c i t r A 155 Department Department of

11

© 2014 Nature America, Inc. All rights reserved. loci against 100,000 sets of randomly sampled control SNPs. Control SNPs SNPs Control SNPs. control sampled randomly of sets 100,000 against loci cance of the overlap, we compared the set of SNPs at 68 QT interval–associated Program using the command intersectBED Epigenomics in BEDTools To(v2.12.0). Roadmap assess the NIH signifi US the in N41) Ventricle Left (BC ChromHMM from the 1000 Genomes Project (CEU population) and computed overlap with ( ChromHMM using project Epigenomics Roadmap the from obtained modifications histone of combinations grating analyses. enhancer Cardiac adjustment for attenuated best the additional after substantially was association interval SNP–QT the when association interval tion. We inferred that the SNP after additional adjustment for the best experiment not owing available imputation). to SNP poor 1 within Mb of transcripts the SNPall waswith examinedSNP for 63 QT interval–associated interval–associated QT each SNPs of (5 SNPsAssociation were batch. and status disease site, study sex, age, for adjustment after levels, sion log with association for tested was genotype SNP try. European ances inferred to were samples with Analyses restricted genetically performed. was Project Genomes 1000 the in genotypes SNP to Imputation array. ST1.2 Genechip Affymetrix the using measured was expression RNA genome 6.0 Affymetrix the using genotyped were samples DNA hearts. donor unused from or transplantation undergoing failure heart free ventricular Left Network. Genomics Applied Myocardial the in individuals samples. in cardiac Expression populations ancestry European of genome the in tests variant common independent of number at set was significance fixed variance–weighted, inverse with at MANTEL sites using in two analytic parallel were performed genome meta-analysis. and analyses Association arrays. of ( factor inflation of quantile the distortion any test statistic minimize Hardy and rate call metric, Cohort results. with SNPs and SNPs Monomorphic samples. discovery all across available was SNPs million 2.5 of set common a that so SNPs HapMap unmeasured at genotypes impute to approaches model Markov hidden used studies All arrays. genotyping wide Genotyping, imputation and quality control. consent. informed provided all participants and committees, ethics local by reviewed were studies All pregnancy. or medications, presence of a pacemaker or implantable cardioverter defibrillator bundle branch block. Optional exclusions included use left of or QT interval–altering right of presence or ms >120 of duration QRS of presence and flutter Mandatory exclusions interval. included presence of or fibrillation atrial atrial case with few a population with largely individuals cohorts. Study ONLINE Nature Ge Nature r 2 > 0.8) with each of the 68 QT interval–associated loci using genotype data genotype using loci of 68 QT each the interval–associated > with 0.8) - wall tissue was collected at with from the was time of tissue subjects collected wall surgery cardiac - wide results from each cohort before meta before cohort each from results wide

- MET wide significance ( n - etics annotated enhancer elements in the left ventricle tissue sample tissue in ventricle the elements left enhancer annotated - - oot fr QT for Cohorts specific SNP filters on minimum MAF, imputation quality quality imputation MAF, minimum on filters SNP specific control sampling for traits not strongly associated with QT QT with associated strongly not traits for sampling control H λ ). Replication genotyping was performed using a variety variety a using performed was genotyping Replication ). ODS 5 β 0 . estimates larger than 100,000 were removed from all all from removed were 100,000 than larger estimates P < 5 × 10 × 5 < - Weinberg equilibrium equilibrium Weinberg Enhancer annotations were generated by inte by generated were annotations Enhancer - transcript association could explain the SNP–QT P < 4.4 × 10 Samples of cardiac tissue were acquired from were Samples of tissue acquired cardiac −8 - - , a threshold accounting for the effective effective the for accounting threshold a , interval association analyses included included analyses association interval or community cis - effects meta effects - eQTL SNP for the transcript in ques −5 Genomic control was applied to to applied was control Genomic 23 = 0.05/1,146 tests) were examined , GWAS used a variety of genome - 5 transcript associations meeting meeting associations transcript 1 . We identified SNPs in LD LD in SNPs identified We . cis - - based ascertainment and ascertainment based - P - quantile plot or quantile genomic - analysis. Genome analysis. analysis. Meta analysis. value were selected to to selected were value eQTL SNP.eQTL 2 - transformed expres transformed - wide array, and and array, wide 3 or METAL - analyses analyses - wide wide 2 4 2 9 - ­ ­ ­ ­ ­ -

related cardiac event (syncope or cardiac arrest). Six genes ( genes Six arrest). cardiac or (syncope event cardiac related sequencing of only samples showing an aberrant DHPLC elution profile. elution DHPLC aberrant an showing samples only of sequencing high of all case samples or an intermediate mutation detection platform (denaturing was using DNAperformed either direct Sanger sequencing–based sequencing in ion channel complexes. macromolecular For each gene, mutational analysis and or known expression cardiac interval genes in involvement the associated proximity to significance, the of signal absence of association, multiple nearby statistical nominal of basis the on chosen were genes candidate six These sis. cant loci, were selected for comprehensive ORF and splice CAV2 with symptomatic were (66%) 175 history, clinical documented a ( ( Canada Ontario, Amsterdam, The Netherlands ( ( du Nantes, Thorax, France ( (Institut centers recruitment LQTS congenital international 7 from derived of QTc QTcaverage 20 years; = 529 negative for mutations in LQT1–LQT3 (191 average (64%); females age = 27 analysis. mutation LQTS ( gene nearest the to ( block LD the of size for matched were and array genotyping 660W Affymetrix the from chosen were 52. 51. 50. 49. InWeb the in were database. which of 85 total, in genes 124 QT protein generated are that networks a using within matched random, 10,000 to it it within comparing proteins by individual and network the of significance the evaluates DAPPLE loci. different from proteins between on connections filtering teins, pro other through connections indirect as well as proteins seed the among QT variant common ated associ previously 7 from genes by encoded proteins as well as SCN4B) and SCN5A, KCNE1, KCNE2, CAV3, SNTA1, KCNJ2, CACNA1C, ANK2, AKAP9 network with 12 LQTS known mendelian Evaluator) Link to build and a analyze network of genes seed Protein Association (Disease DAPPLE used Wecalled cited. algorithm published been a had interaction the which in publications different of the of in scale and was the which interaction, reported experiment interaction the number the of neighborhood the of basis the on score a assigned probabilistic was interaction Each included. also were transfer, orthology for thresholds stringent using organisms, in genes other by orthologous encoded proteins between interactions reported pooled; were interactions human All high are which of 169,810 protein interaction Protein-protein n n = 23); and St George’s Hospital, London, UK ( = 72); University of Pavia, Pavia, Italy ( Italy Pavia, of Pavia, University = 72);

- Schwartz, P.J., Moss, A.J., Vincent, G.M. & Crampton, R.S. Diagnostic criteria for criteria Diagnostic R.S. Crampton, & G.M. Vincent, A.J., P.J.,Moss, Schwartz, for states chromatin of characterization and Discovery M. Kellis, & J. Ernst, testing multiple the of Estimation Daly,M.J. & Yelensky,Altshuler,D. Pe’er,I., R., of meta-analysis efficient and fast METAL: G.R. Abecasis, & Y. Li, C.J., Willer, the long QT syndrome. An update. An syndrome. QT long the genome. human (2010). the of annotation systematic Epidemiol. variants. common all nearly of studies association genomewide for burden scans. association genomewide IGC meta IGC - performance liquid chromatography, DHPLC) followed by direct DNA direct by followed chromatography, DHPLC) liquid performance , , SLC8A1 ≥ - - protein interactions protein protein interactions to identify proteins newly associated in the the in associated newly proteins identify to interactions protein 480 ms (

32 - - , , degree node degree analysis. We translated the new loci into genes, identifying identifying genes, into loci new the translated We analysis. SRL , 381–385 (2008). 381–385 , n n = 261; 86%) or score Schwartz = 24); Munich Medical International, Munich, Germany Germany Munich, International, Medical Munich 24); = and ± 25 kb if outside of a gene). a of outside if kb 25 TRPM7 ± - A cohort of 298 unrelated individuals with LQTS LQTS with individuals unrelated 298 of cohort A 5 SNPs), MAF of the lead SNP ( SNP lead the of MAF SNPs), 5 interval loci interval - - n ± confidence interactions across 12,793 proteins. proteins. 12,793 across interactions confidence label permutation label 2 = 91); Mayo Clinic, Rochester, Minnesota, USA = Rochester, Mayo 91); Minnesota, Clinic, 58 ms), who satisfied the case inclusion criteria criteria inclusion case the 58 satisfied who ms), in silico in 6 n . This database contains 428,430 interactions, interactions, 428,430 contains database This . = 30); The Hospital for Sick Children, Toronto, Bioinformatics ), ), derived from five new genome Circulation analyses. 3 , 4 - . We considered direct connections connections direct We . considered n related related proteins (KCNQ1, KCNH2, = 38); Academic Medical Centre, Centre, Medical Academic = 38);

88 26 2 7 n We used a public database of database We public a used Nat. , 782–784 (1993). 782–784 , , 2190–2191 (2010). 2190–2191 , . . We of ability the considered = 20)). Of the 265 cases with 5 2

3.0 ( Biotechnol. - doi: site mutation analy n ± = was 298; 100%), 0.1) and distance distance and 0.1) 2 7 10.1038/ng.3014 ATP2A2 . . We the seeded

- 28 wide wide signifi 817–825 , ≥ 1 LQTS 1 - , , Protein Protein CAV1 Genet. ± ­ ­ ­ ­ - ,