03263nas a2200553 4500008004100000022001400041245011200055210006900167260001300236300001100249490000600260520171300266653000901979653002201988653003402010653002102044653001102065653003402076653001102110653000902121653001602130653003602146653002402182100002302206700001602229700002102245700002002266700001902286700001202305700002102317700002302338700002102361700002102382700001602403700001902419700001802438700002302456700001902479700002202498700001702520700001902537700001902556700002102575700001702596700002402613700001702637700001902654856003602673 2011 eng d a1942-326800aAssociation of genetic variants and incident coronary heart disease in multiethnic cohorts: the PAGE study.0 aAssociation of genetic variants and incident coronary heart dise c2011 Dec a661-720 v43 a
BACKGROUND: Genome-wide association studies identified several single nucleotide polymorphisms (SNP) associated with prevalent coronary heart disease (CHD), but less is known of associations with incident CHD. The association of 13 published CHD SNPs was examined in 5 ancestry groups of 4 large US prospective cohorts.
METHODS AND RESULTS: The analyses included incident coronary events over an average 9.1 to 15.7 follow-up person-years in up to 26 617 white individuals (6626 events), 8018 black individuals (914 events), 1903 Hispanic individuals (113 events), 3669 American Indian individuals (595 events), and 885 Asian/Pacific Islander individuals (66 events). We used Cox proportional hazards models (with additive mode of inheritance) adjusted for age, sex, and ancestry (as needed). Nine loci were statistically associated with incident CHD events in white participants: 9p21 (rs10757278; P=4.7 × 10(-41)), 16q23.1 (rs2549513; P=0.0004), 6p24.1 (rs499818; P=0.0002), 2q36.3 (rs2943634; P=6.7 × 10(-6)), MTHFD1L (rs6922269, P=5.1 × 10(-10)), APOE (rs429358; P=2.7×10(-18)), ZNF627 (rs4804611; P=5.0 × 10(-8)), CXCL12 (rs501120; P=1.4 × 10(-6)) and LPL (rs268; P=2.7 × 10(-17)). The 9p21 region showed significant between-study heterogeneity, with larger effects in individuals age 55 years or younger and in women. Inclusion of coronary revascularization procedures among the incident CHD events introduced heterogeneity. The SNPs were not associated with CHD in black participants, and associations varied in other US minorities.
CONCLUSIONS: Prospective analyses of white participants replicated several reported cross-sectional CHD-SNP associations.
10aAged10aAged, 80 and over10aContinental Population Groups10aCoronary Disease10aFemale10aGenome-Wide Association Study10aHumans10aMale10aMiddle Aged10aPolymorphism, Single Nucleotide10aProspective Studies1 aFranceschini, Nora1 aCarty, Cara1 aBůzková, Petra1 aReiner, Alex, P1 aGarrett, Tiana1 aLin, Yi1 aVöckler, Jens-S1 aHindorff, Lucia, A1 aCole, Shelley, A1 aBoerwinkle, Eric1 aLin, Dan-Yu1 aBookman, Ebony1 aBest, Lyle, G1 aBella, Jonathan, N1 aEaton, Charles1 aGreenland, Philip1 aJenny, Nancy1 aNorth, Kari, E1 aTaverna, Darin1 aYoung, Alicia, M1 aDeelman, Ewa1 aKooperberg, Charles1 aPsaty, Bruce1 aHeiss, Gerardo uhttps://chs-nhlbi.org/node/134703996nas a2200625 4500008004100000022001400041245008800055210006900143260000900212300001300221490000600234520220300240653002202443653000902465653002602474653002402500653004002524653001102564653003802575653003402613653001102647653002702658653000902685653001702694653001602711653003602727653002802763653003402791653001702825653001602842653001802858100002202876700002402898700001902922700001802941700001602959700001902975700001902994700001803013700002503031700002303056700002003079700001703099700002303116700001903139700002103158700002203179700002103201700002403222700002703246700002103273700002103294700001903315856003603334 2012 eng d a1553-740400aFine-mapping and initial characterization of QT interval loci in African Americans.0 aFinemapping and initial characterization of QT interval loci in c2012 ae10028700 v83 aThe QT interval (QT) is heritable and its prolongation is a risk factor for ventricular tachyarrhythmias and sudden death. Most genetic studies of QT have examined European ancestral populations; however, the increased genetic diversity in African Americans provides opportunities to narrow association signals and identify population-specific variants. We therefore evaluated 6,670 SNPs spanning eleven previously identified QT loci in 8,644 African American participants from two Population Architecture using Genomics and Epidemiology (PAGE) studies: the Atherosclerosis Risk in Communities study and Women's Health Initiative Clinical Trial. Of the fifteen known independent QT variants at the eleven previously identified loci, six were significantly associated with QT in African American populations (P≤1.20×10(-4)): ATP1B1, PLN1, KCNQ1, NDRG4, and two NOS1AP independent signals. We also identified three population-specific signals significantly associated with QT in African Americans (P≤1.37×10(-5)): one at NOS1AP and two at ATP1B1. Linkage disequilibrium (LD) patterns in African Americans assisted in narrowing the region likely to contain the functional variants for several loci. For example, African American LD patterns showed that 0 SNPs were in LD with NOS1AP signal rs12143842, compared with European LD patterns that indicated 87 SNPs, which spanned 114.2 Kb, were in LD with rs12143842. Finally, bioinformatic-based characterization of the nine African American signals pointed to functional candidates located exclusively within non-coding regions, including predicted binding sites for transcription factors such as TBX5, which has been implicated in cardiac structure and conductance. In this detailed evaluation of QT loci, we identified several African Americans SNPs that better define the association with QT and successfully narrowed intervals surrounding established loci. These results demonstrate that the same loci influence variation in QT across multiple populations, that novel signals exist in African Americans, and that the SNPs identified as strong candidates for functional evaluation implicate gene regulatory dysfunction in QT prolongation.
10aAfrican Americans10aAged10aComputational Biology10aElectrocardiography10aEuropean Continental Ancestry Group10aFemale10aGenetic Predisposition to Disease10aGenome-Wide Association Study10aHumans10aLinkage Disequilibrium10aMale10aMetagenomics10aMiddle Aged10aPolymorphism, Single Nucleotide10aQuantitative Trait Loci10aQuantitative Trait, Heritable10aRisk Factors10aTachycardia10aUnited States1 aAvery, Christy, L1 aSethupathy, Praveen1 aBuyske, Steven1 aHe, Qianchuan1 aLin, Dan-Yu1 aArking, Dan, E1 aCarty, Cara, L1 aDuggan, David1 aFesinmeyer, Megan, D1 aHindorff, Lucia, A1 aJeff, Janina, M1 aKlein, Liviu1 aPatton, Kristen, K1 aPeters, Ulrike1 aShohet, Ralph, V1 aSotoodehnia, Nona1 aYoung, Alicia, M1 aKooperberg, Charles1 aHaiman, Christopher, A1 aMohlke, Karen, L1 aWhitsel, Eric, A1 aNorth, Kari, E uhttps://chs-nhlbi.org/node/608305266nas a2201201 4500008004100000022001400041245015400055210006900209260001300278300001300291490000600304520181500310653002202125653002202147653002102169653002102190653004002211653003402251653001102285653002202296653002202318653002702340653002602367653001802393100001302411700002202424700002102446700002102467700001902488700001802507700002102525700002102546700002502567700001902592700001602611700002102627700003002648700002202678700002202700700002302722700001702745700002402762700002302786700001402809700002002823700002202843700001802865700002302883700001202906700002202918700002802940700002502968700001902993700002603012700002103038700002503059700002003084700001703104700001803121700002003139700001903159700001903178700002103197700002003218700002803238700002103266700002603287700002403313700001803337700002103355700001703376700001703393700002003410700002003430700002303450700002603473700002203499700001903521700001903540700001403559700002103573700002003594700002003614700002103634700001903655700002403674700002103698700002203719700002003741700002303761700002003784700002003804700002103824700002703845700002103872700002403893700002903917700002203946700002003968700001903988700002104007856003604028 2013 eng d a1553-740400aTrans-ethnic fine-mapping of lipid loci identifies population-specific signals and allelic heterogeneity that increases the trait variance explained.0 aTransethnic finemapping of lipid loci identifies populationspeci c2013 Mar ae10033790 v93 aGenome-wide association studies (GWAS) have identified ~100 loci associated with blood lipid levels, but much of the trait heritability remains unexplained, and at most loci the identities of the trait-influencing variants remain unknown. We conducted a trans-ethnic fine-mapping study at 18, 22, and 18 GWAS loci on the Metabochip for their association with triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C), respectively, in individuals of African American (n = 6,832), East Asian (n = 9,449), and European (n = 10,829) ancestry. We aimed to identify the variants with strongest association at each locus, identify additional and population-specific signals, refine association signals, and assess the relative significance of previously described functional variants. Among the 58 loci, 33 exhibited evidence of association at P<1 × 10(-4) in at least one ancestry group. Sequential conditional analyses revealed that ten, nine, and four loci in African Americans, Europeans, and East Asians, respectively, exhibited two or more signals. At these loci, accounting for all signals led to a 1.3- to 1.8-fold increase in the explained phenotypic variance compared to the strongest signals. Distinct signals across ancestry groups were identified at PCSK9 and APOA5. Trans-ethnic analyses narrowed the signals to smaller sets of variants at GCKR, PPP1R3B, ABO, LCAT, and ABCA1. Of 27 variants reported previously to have functional effects, 74% exhibited the strongest association at the respective signal. In conclusion, trans-ethnic high-density genotyping and analysis confirm the presence of allelic heterogeneity, allow the identification of population-specific variants, and limit the number of candidate SNPs for functional studies.
10aAfrican Americans10aApolipoproteins A10aCholesterol, HDL10aCholesterol, LDL10aEuropean Continental Ancestry Group10aGenome-Wide Association Study10aHumans10aLipoproteins, HDL10aLipoproteins, LDL10aProprotein Convertases10aSerine Endopeptidases10aTriglycerides1 aWu, Ying1 aWaite, Lindsay, L1 aJackson, Anne, U1 aSheu, Wayne, H-H1 aBuyske, Steven1 aAbsher, Devin1 aArnett, Donna, K1 aBoerwinkle, Eric1 aBonnycastle, Lori, L1 aCarty, Cara, L1 aCheng, Iona1 aCochran, Barbara1 aCroteau-Chonka, Damien, C1 aDumitrescu, Logan1 aEaton, Charles, B1 aFranceschini, Nora1 aGuo, Xiuqing1 aHenderson, Brian, E1 aHindorff, Lucia, A1 aKim, Eric1 aKinnunen, Leena1 aKomulainen, Pirjo1 aLee, Wen-Jane1 aLe Marchand, Loïc1 aLin, Yi1 aLindström, Jaana1 aLingaas-Holmen, Oddgeir1 aMitchell, Sabrina, L1 aNarisu, Narisu1 aRobinson, Jennifer, G1 aSchumacher, Fred1 aStančáková, Alena1 aSundvall, Jouko1 aSung, Yun-Ju1 aSwift, Amy, J1 aWang, Wen-Chang1 aWilkens, Lynne1 aWilsgaard, Tom1 aYoung, Alicia, M1 aAdair, Linda, S1 aBallantyne, Christie, M1 aBůzková, Petra1 aChakravarti, Aravinda1 aCollins, Francis, S1 aDuggan, David1 aFeranil, Alan, B1 aHo, Low-Tone1 aHung, Yi-Jen1 aHunt, Steven, C1 aHveem, Kristian1 aJuang, Jyh-Ming, J1 aKesäniemi, Antero, Y1 aKuusisto, Johanna1 aLaakso, Markku1 aLakka, Timo, A1 aLee, I-Te1 aLeppert, Mark, F1 aMatise, Tara, C1 aMoilanen, Leena1 aNjølstad, Inger1 aPeters, Ulrike1 aQuertermous, Thomas1 aRauramaa, Rainer1 aRotter, Jerome, I1 aSaramies, Jouko1 aTuomilehto, Jaakko1 aUusitupa, Matti1 aWang, Tzung-Dau1 aBoehnke, Michael1 aHaiman, Christopher, A1 aChen, Yii-der, I1 aKooperberg, Charles1 aAssimes, Themistocles, L1 aCrawford, Dana, C1 aHsiung, Chao, A1 aNorth, Kari, E1 aMohlke, Karen, L uhttps://chs-nhlbi.org/node/662903296nas a2200565 4500008004100000022001400041245008800055210006900143260001300212300001000225490000700235520169900242653000901941653003401950653002401984653001102008653003802019653001502057653001102072653002102083653000902104653001602113653001402129653003602143653002802179653003402207653001702241100002302258700002102281700002002302700002302322700002302345700001202368700001902380700001702399700002302416700002302439700002402462700002002486700001902506700002002525700002002545700002402565700002102589700001902610700001902629700002402648700002202672856003602694 2014 eng d a1531-548700aEvidence of heterogeneity by race/ethnicity in genetic determinants of QT interval.0 aEvidence of heterogeneity by raceethnicity in genetic determinan c2014 Nov a790-80 v253 aBACKGROUND: QT interval (QT) prolongation is an established risk factor for ventricular tachyarrhythmia and sudden cardiac death. Previous genome-wide association studies in populations of the European descent have identified multiple genetic loci that influence QT, but few have examined these loci in ethnically diverse populations.
METHODS: Here, we examine the direction, magnitude, and precision of effect sizes for 21 previously reported SNPs from 12 QT loci, in populations of European (n = 16,398), African (n = 5,437), American Indian (n = 5,032), Hispanic (n = 1,143), and Asian (n = 932) descent as part of the Population Architecture using Genomics and Epidemiology (PAGE) study. Estimates obtained from linear regression models stratified by race/ethnicity were combined using inverse-variance weighted meta-analysis. Heterogeneity was evaluated using Cochran's Q test.
RESULTS: Of 21 SNPs, 7 showed consistent direction of effect across all 5 populations, and an additional 9 had estimated effects that were consistent across 4 populations. Despite consistent direction of effect, 9 of 16 SNPs had evidence (P < 0.05) of heterogeneity by race/ethnicity. For these 9 SNPs, linkage disequilibrium plots often indicated substantial variation in linkage disequilibrium patterns among the various racial/ethnic groups, as well as possible allelic heterogeneity.
CONCLUSIONS: These results emphasize the importance of analyzing racial/ethnic groups separately in genetic studies. Furthermore, they underscore the possible utility of trans-ethnic studies to pinpoint underlying casual variants influencing heritable traits such as QT.
10aAged10aContinental Population Groups10aElectrocardiography10aFemale10aGenetic Predisposition to Disease10aHaplotypes10aHumans10aLong QT Syndrome10aMale10aMiddle Aged10aPhenotype10aPolymorphism, Single Nucleotide10aQuantitative Trait Loci10aQuantitative Trait, Heritable10aRisk Factors1 aSeyerle, Amanda, A1 aYoung, Alicia, M1 aJeff, Janina, M1 aMelton, Phillip, E1 aJorgensen, Neal, W1 aLin, Yi1 aCarty, Cara, L1 aDeelman, Ewa1 aHeckbert, Susan, R1 aHindorff, Lucia, A1 aJackson, Rebecca, D1 aMartin, Lisa, W1 aOkin, Peter, M1 aPerez, Marco, V1 aPsaty, Bruce, M1 aSoliman, Elsayed, Z1 aWhitsel, Eric, A1 aNorth, Kari, E1 aLaston, Sandra1 aKooperberg, Charles1 aAvery, Christy, L uhttps://chs-nhlbi.org/node/6598