@article {720, title = {Linearly scaled, rate-invariant normal limits for QT interval: eight decades of incorrect application of power functions.}, journal = {J Cardiovasc Electrophysiol}, volume = {13}, year = {2002}, month = {2002 Dec}, pages = {1211-8}, abstract = {

INTRODUCTION: Normal limits for QT traditionally are derived as mean +/- 2*SD, with rate adjustment done by dividing QT values by power functions such as RR 1/2 (proportional scaling).

METHODS AND RESULTS: We evaluated procedures for deriving normal limits by comparing adjusted QT distributions versus heart rate using ECG data of 11,739 normal men and women aged > or = 40 years. QT decreased as predicted by many power functions with heart rate but its SD remained relatively unchanged. Consequently, proportional scaling induced rate-dependent distortion of normal limits. Furthermore, QT distributions by heart rate were variably skewed and non-normal. Therefore, normal limits expressed as mean +/- 2*SD were misleading. Omission of regression intercept was an additional reason for failure of Bazett{\textquoteright}s and Fridericia{\textquoteright}s formulas. Regularized normal limits for adjusted QT (Qta) were obtained with linear instead of proportional scaling of type QTa = QT + k1*(1 - RR(k2)), for instance, with k2 = 0.5, k1 = 0.360 for males and 0.353 for females, or with k2 = 0.42, k1 = 0.414 for males and 0.420 for females. With linear scaling, QTa = 460 msec was established as the upper 2\% normal limit, with 32 msec as the limit for a significant QTa increase from reference ECG in serial comparison.

CONCLUSION: Traditional procedures for establishment of normal limits failed because of proportional scaling, assumption of normal QT distribution, or omission of regression intercept. Percentile distributions of linearly scaled adjusted QT produced regularized rate invariant normal limits within normal sinus rates.

}, keywords = {Adult, Aged, Aged, 80 and over, Electrocardiography, Female, Heart Rate, Humans, Male, Middle Aged, Prognosis, Reference Values, Sex Characteristics}, issn = {1045-3873}, doi = {10.1046/j.1540-8167.2002.01211.x}, author = {Rautaharju, Pentti M and Zhang, Zhu-Ming} } @article {774, title = {Assessment of prolonged QT and JT intervals in ventricular conduction defects.}, journal = {Am J Cardiol}, volume = {93}, year = {2004}, month = {2004 Apr 15}, pages = {1017-21}, abstract = {

The JT interval or Bazett{\textquoteright}s QTc - QRS has been advocated for detection of prolonged repolarization in ventricular conduction defects (VCDs). However, the use of neither JT nor QTc - QRS has been validated, and normal limits for rate-adjusted JT have not been established for VCDs or for normal ventricular conduction. Functional relations among RR, JT, and QT intervals were evaluated in 11,739 adult men and women with normal ventricular conduction and in 1,251 subjects with major VCD. The results showed that JT adjustment obtained as QTc - QRS retained a strong residual correlation with ventricular rate (r = 0.54), making its use ill-advised. In contrast, QT adjustment as a linear function of the RR interval for VCD as QT(RR,QRS) = QT - 155 x (60/heart rate - 1) - 0.93 x (QRS - 139) + k, with k = -22 ms for men and -34 ms for women, removed the rate dependence and produced upper 2\% and 5\% normal limits at 460 and 450 ms, respectively, which are identical to those in normal conduction. As an alternative, equally effective linear JT adjustment formulas were derived, including newly required normal standards. Thus, detection of prolonged repolarization in VCD requires the use of the JT interval or a bivariate model for QT with RR and QRS intervals as covariates.

}, keywords = {Adult, Aged, Aged, 80 and over, Arrhythmias, Cardiac, Bundle-Branch Block, Electrocardiography, Female, Heart Ventricles, Humans, Male, Middle Aged}, issn = {0002-9149}, doi = {10.1016/j.amjcard.2003.12.055}, author = {Rautaharju, Pentti M and Zhang, Zhu-Ming and Prineas, Ron and Heiss, Gerardo} } @article {887, title = {Comparison of mortality risk for electrocardiographic abnormalities in men and women with and without coronary heart disease (from the Cardiovascular Health Study).}, journal = {Am J Cardiol}, volume = {97}, year = {2006}, month = {2006 Feb 01}, pages = {309-15}, abstract = {

Mortality risk associated with electrocardiographic (ECG) abnormalities has been commonly reported to be lower in women than in men. We compared coronary heart disease (CHD) and all-cause mortality risk for ECG variables during a mean 9.1-year follow-up in 4,912 participants in the Cardiovascular Health Study who were > or = 65 years of age. The hypothesis was that mortality risk for ECG abnormalities is not lower in women than in men. Five ECG variables were significant mortality predictors in Cox regression models that were adjusted for demographic, clinical, and medication variables. Gender differences were significant and mortality risk was higher in women for ECG estimates of left ventricular mass for both end points and for nondipolar QRS voltage for all-cause mortality. When evaluated simultaneously in multiple ECG variable risk models in subgroups that were stratified by baseline CHD status, no gender difference was significant. In the latter models, ST depression was a strong predictor of CHD mortality in groups with and without previous CHD. Other significant ECG predictors were previous myocardial infarction in the previous CHD group and nondipolar QRS voltage in the CHD-free group. Four ECG abnormalities were significant predictors of all-cause mortality in the CHD-free group, with risk increases of 18\% to 50\%. The risk of all-cause mortality in the previous CHD group was significantly increased for ST depression (by 64\%), the ECG estimate of left ventricular mass (by 48\%), and previous myocardial infarction (by 34\%). In conclusion, we found no evidence that the relative risk of mortality for ECG abnormalities is lower in women than in men.

}, keywords = {Aged, Coronary Disease, Electrocardiography, Female, Humans, Male, Risk}, issn = {0002-9149}, doi = {10.1016/j.amjcard.2005.08.046}, author = {Rautaharju, Pentti M and Ge, Sijian and Nelson, Jennifer C and Marino Larsen, Emily K and Psaty, Bruce M and Furberg, Curt D and Zhang, Zhu-Ming and Robbins, John and Gottdiener, John S and Chaves, Paulo H M} } @article {1262, title = {Gender differences between the Minnesota code and Novacode electrocardiographic prognostication of coronary heart disease in the cardiovascular health study.}, journal = {Am J Cardiol}, volume = {107}, year = {2011}, month = {2011 Mar 15}, pages = {817-820.e1}, abstract = {

The Minnesota Code (MC) and Novacode (Nova) are the most widely used electrocardiographic (ECG) classification systems. The comparative strengths of their classifications for Q- and ST-T-wave abnormalities in predicting coronary heart disease (CHD) events and total mortality have not been evaluated separately by gender. We studied standard 12-lead electrocardiograms at rest from 4,988 participants in the Cardiovascular Health Study. Average age at baseline was 73 years, 60\% of participants were women 85\% were white, and 22\% had a history of cardiovascular disease or presence of ECG myocardial infarction by MC or Nova. Starting in 1989 with an average 17-year follow-up, 65\% of participants died and 33\% had incident CHD in a cohort free of cardiovascular disease at baseline. Of these, electrocardiograms with major Q-wave or major ST-T abnormalities by MC or Nova predicted increased risk for CHD events and total mortality with no significant differences in predictability between men and women. The study also found that women had fewer major Q-wave changes but more major ST-T abnormalities than men. However, there were no gender differences in predicting CHD events and total mortality. In conclusion, ECG classification systems for myocardial infarction/ischemia abnormalities by MC or Nova are valuable and useful for men and women in clinical trials and epidemiologic studies.

}, keywords = {Aged, Coronary Disease, Electrocardiography, Female, Humans, Incidence, Male, Predictive Value of Tests, Prognosis, Proportional Hazards Models, Prospective Studies, Risk Assessment, Risk Factors, Sex Factors, United States}, issn = {1879-1913}, doi = {10.1016/j.amjcard.2010.11.004}, author = {Zhang, Zhu-Ming and Prineas, Ronald J and Case, Doug and Psaty, Bruce M and Suzuki, Takeki and Burke, Gregory L} } @article {6179, title = {Impact of ancestry and common genetic variants on QT interval in African Americans.}, journal = {Circ Cardiovasc Genet}, volume = {5}, year = {2012}, month = {2012 Dec}, pages = {647-55}, abstract = {

BACKGROUND: Ethnic differences in cardiac arrhythmia incidence have been reported, with a particularly high incidence of sudden cardiac death and low incidence of atrial fibrillation in individuals of African ancestry. We tested the hypotheses that African ancestry and common genetic variants are associated with prolonged duration of cardiac repolarization, a central pathophysiological determinant of arrhythmia, as measured by the electrocardiographic QT interval.

METHODS AND RESULTS: First, individual estimates of African and European ancestry were inferred from genome-wide single-nucleotide polymorphism (SNP) data in 7 population-based cohorts of African Americans (n=12,097) and regressed on measured QT interval from ECGs. Second, imputation was performed for 2.8 million SNPs, and a genome-wide association study of QT interval was performed in 10 cohorts (n=13,105). There was no evidence of association between genetic ancestry and QT interval (P=0.94). Genome-wide significant associations (P<2.5 {\texttimes} 10(-8)) were identified with SNPs at 2 loci, upstream of the genes NOS1AP (rs12143842, P=2 {\texttimes} 10(-15)) and ATP1B1 (rs1320976, P=2 {\texttimes} 10(-10)). The most significant SNP in NOS1AP was the same as the strongest SNP previously associated with QT interval in individuals of European ancestry. Low probability values (P<10(-5)) were observed for SNPs at several other loci previously identified in genome-wide association studies in individuals of European ancestry, including KCNQ1, KCNH2, LITAF, and PLN.

CONCLUSIONS: We observed no difference in duration of cardiac repolarization with global genetic indices of African American ancestry. In addition, our genome-wide association study extends the association of polymorphisms at several loci associated with repolarization in individuals of European ancestry to include individuals of African ancestry.

}, keywords = {Adult, African Americans, Aged, Electrocardiography, European Continental Ancestry Group, Female, Genealogy and Heraldry, Genetic Variation, Genome, Human, Genome-Wide Association Study, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.112.962787}, author = {Smith, J Gustav and Avery, Christy L and Evans, Daniel S and Nalls, Michael A and Meng, Yan A and Smith, Erin N and Palmer, Cameron and Tanaka, Toshiko and Mehra, Reena and Butler, Anne M and Young, Taylor and Buxbaum, Sarah G and Kerr, Kathleen F and Berenson, Gerald S and Schnabel, Renate B and Li, Guo and Ellinor, Patrick T and Magnani, Jared W and Chen, Wei and Bis, Joshua C and Curb, J David and Hsueh, Wen-Chi and Rotter, Jerome I and Liu, Yongmei and Newman, Anne B and Limacher, Marian C and North, Kari E and Reiner, Alexander P and Quibrera, P Miguel and Schork, Nicholas J and Singleton, Andrew B and Psaty, Bruce M and Soliman, Elsayed Z and Solomon, Allen J and Srinivasan, Sathanur R and Alonso, Alvaro and Wallace, Robert and Redline, Susan and Zhang, Zhu-Ming and Post, Wendy S and Zonderman, Alan B and Taylor, Herman A and Murray, Sarah S and Ferrucci, Luigi and Arking, Dan E and Evans, Michele K and Fox, Ervin R and Sotoodehnia, Nona and Heckbert, Susan R and Whitsel, Eric A and Newton-Cheh, Christopher} } @article {6084, title = {Novel loci associated with PR interval in a genome-wide association study of 10 African American cohorts.}, journal = {Circ Cardiovasc Genet}, volume = {5}, year = {2012}, month = {2012 Dec}, pages = {639-46}, abstract = {

BACKGROUND: The PR interval, as measured by the resting, standard 12-lead ECG, reflects the duration of atrial/atrioventricular nodal depolarization. Substantial evidence exists for a genetic contribution to PR, including genome-wide association studies that have identified common genetic variants at 9 loci influencing PR in populations of European and Asian descent. However, few studies have examined loci associated with PR in African Americans.

METHODS AND RESULTS: We present results from the largest genome-wide association study to date of PR in 13 415 adults of African descent from 10 cohorts. We tested for association between PR (ms) and ≈2.8 million genotyped and imputed single-nucleotide polymorphisms. Imputation was performed using HapMap 2 YRI and CEU panels. Study-specific results, adjusted for global ancestry and clinical correlates of PR, were meta-analyzed using the inverse variance method. Variation in genome-wide test statistic distributions was noted within studies (λ range: 0.9-1.1), although not after genomic control correction was applied to the overall meta-analysis (λ: 1.008). In addition to generalizing previously reported associations with MEIS1, SCN5A, ARHGAP24, CAV1, and TBX5 to African American populations at the genome-wide significance level (P<5.0 {\texttimes} 10(-8)), we also identified a novel locus: ITGA9, located in a region previously implicated in SCN5A expression. The 3p21 region harboring SCN5A also contained 2 additional independent secondary signals influencing PR (P<5.0 {\texttimes} 10(-8)).

CONCLUSIONS: This study demonstrates the ability to map novel loci in African Americans as well as the generalizability of loci associated with PR across populations of African, European, and Asian descent.

}, keywords = {Adult, African Americans, Cohort Studies, Electrocardiography, Female, Genetic Loci, Genome-Wide Association Study, Humans, Male, Meta-Analysis as Topic, Middle Aged, Polymorphism, Single Nucleotide}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.112.963991}, author = {Butler, Anne M and Yin, Xiaoyan and Evans, Daniel S and Nalls, Michael A and Smith, Erin N and Tanaka, Toshiko and Li, Guo and Buxbaum, Sarah G and Whitsel, Eric A and Alonso, Alvaro and Arking, Dan E and Benjamin, Emelia J and Berenson, Gerald S and Bis, Josh C and Chen, Wei and Deo, Rajat and Ellinor, Patrick T and Heckbert, Susan R and Heiss, Gerardo and Hsueh, Wen-Chi and Keating, Brendan J and Kerr, Kathleen F and Li, Yun and Limacher, Marian C and Liu, Yongmei and Lubitz, Steven A and Marciante, Kristin D and Mehra, Reena and Meng, Yan A and Newman, Anne B and Newton-Cheh, Christopher and North, Kari E and Palmer, Cameron D and Psaty, Bruce M and Quibrera, P Miguel and Redline, Susan and Reiner, Alex P and Rotter, Jerome I and Schnabel, Renate B and Schork, Nicholas J and Singleton, Andrew B and Smith, J Gustav and Soliman, Elsayed Z and Srinivasan, Sathanur R and Zhang, Zhu-Ming and Zonderman, Alan B and Ferrucci, Luigi and Murray, Sarah S and Evans, Michele K and Sotoodehnia, Nona and Magnani, Jared W and Avery, Christy L} } @article {7259, title = {Fine-mapping, novel loci identification, and SNP association transferability in a genome-wide association study of QRS duration in African Americans.}, journal = {Hum Mol Genet}, year = {2016}, month = {2016 Aug 29}, abstract = {

The electrocardiographic QRS duration, a measure of ventricular depolarization and conduction, is associated with cardiovascular mortality. While single nucleotide polymorphisms (SNPs) associated with QRS duration have been identified at 22 loci in populations of European descent, the genetic architecture of QRS duration in non-European populations is largely unknown. We therefore performed a genome-wide association study (GWAS) meta-analysis of QRS duration in 13,031 African Americans from ten cohorts and a transethnic GWAS meta-analysis with additional results from populations of European descent. In the African American GWAS, a single genome-wide significant SNP association was identified (rs3922844, P = 4 {\texttimes} 10(-14)) in intron 16 of SCN5A, a voltage-gated cardiac sodium channel gene. The QRS-prolonging rs3922844 C allele was also associated with decreased SCN5A RNA expression in human atrial tissue (P = 1.1 {\texttimes} 10(-4)). High density genotyping revealed that the SCN5A association region in African Americans was confined to intron 16. Transethnic GWAS meta-analysis identified novel SNP associations on chromosome 18 in MYL12A (rs1662342, P = 4.9 {\texttimes} 10(-8)) and chromosome 1 near CD1E and SPTA1 (rs7547997, P = 7.9 {\texttimes} 10(-9)). The 22 QRS loci previously identified in populations of European descent were enriched for significant SNP associations with QRS duration in African Americans (P = 9.9 {\texttimes} 10(-7)), and index SNP associations in or near SCN5A, SCN10A, CDKN1A, NFIA, HAND1, TBX5 and SETBP1 replicated in African Americans. In summary, rs3922844 was associated with QRS duration and SCN5A expression, two novel QRS loci were identified using transethnic meta-analysis, and a significant proportion of QRS-SNP associations discovered in populations of European descent were transferable to African Americans when adequate power was achieved.

}, issn = {1460-2083}, doi = {10.1093/hmg/ddw284}, author = {Evans, Daniel S and Avery, Christy L and Nalls, Mike A and Li, Guo and Barnard, John and Smith, Erin N and Tanaka, Toshiko and Butler, Anne M and Buxbaum, Sarah G and Alonso, Alvaro and Arking, Dan E and Berenson, Gerald S and Bis, Joshua C and Buyske, Steven and Carty, Cara L and Chen, Wei and Chung, Mina K and Cummings, Steven R and Deo, Rajat and Eaton, Charles B and Fox, Ervin R and Heckbert, Susan R and Heiss, Gerardo and Hindorff, Lucia A and Hsueh, Wen-Chi and Isaacs, Aaron and Jamshidi, Yalda and Kerr, Kathleen F and Liu, Felix and Liu, Yongmei and Lohman, Kurt K and Magnani, Jared W and Maher, Joseph F and Mehra, Reena and Meng, Yan A and Musani, Solomon K and Newton-Cheh, Christopher and North, Kari E and Psaty, Bruce M and Redline, Susan and Rotter, Jerome I and Schnabel, Renate B and Schork, Nicholas J and Shohet, Ralph V and Singleton, Andrew B and Smith, Jonathan D and Soliman, Elsayed Z and Srinivasan, Sathanur R and Taylor, Herman A and Van Wagoner, David R and Wilson, James G and Young, Taylor and Zhang, Zhu-Ming and Zonderman, Alan B and Evans, Michele K and Ferrucci, Luigi and Murray, Sarah S and Tranah, Gregory J and Whitsel, Eric A and Reiner, Alex P and Sotoodehnia, Nona} } @article {7557, title = {Fifteen Genetic Loci Associated With the Electrocardiographic P Wave.}, journal = {Circ Cardiovasc Genet}, volume = {10}, year = {2017}, month = {2017 Aug}, abstract = {

BACKGROUND: The P wave on an ECG is a measure of atrial electric function, and its characteristics may serve as predictors for atrial arrhythmias. Increased mean P-wave duration and P-wave terminal force traditionally have been used as markers for left atrial enlargement, and both have been associated with increased risk of atrial fibrillation. Here, we explore the genetic basis of P-wave morphology through meta-analysis of genome-wide association study results for P-wave duration and P-wave terminal force from 12 cohort studies.

METHODS AND RESULTS: We included 44 456 individuals, of which 6778 (16\%) were of African ancestry. Genotyping, imputation, and genome-wide association study were performed at each study site. Summary-level results were meta-analyzed centrally using inverse-variance weighting. In meta-analyses of P-wave duration, we identified 6 significant (P<5{\texttimes}10-8) novel loci and replicated a prior association with SCN10A. We identified 3 loci at SCN5A, TBX5, and CAV1/CAV2 that were jointly associated with the PR interval, PR segment, and P-wave duration. We identified 6 novel loci in meta-analysis of P-wave terminal force. Four of the identified genetic loci were significantly associated with gene expression in 329 left atrial samples. Finally, we observed that some of the loci associated with the P wave were linked to overall atrial conduction, whereas others identified distinct phases of atrial conduction.

CONCLUSIONS: We have identified 6 novel genetic loci associated with P-wave duration and 6 novel loci associated with P-wave terminal force. Future studies of these loci may aid in identifying new targets for drugs that may modify atrial conduction or treat atrial arrhythmias.

}, keywords = {Arrhythmias, Cardiac, Caveolin 1, Caveolin 2, Electrocardiography, Genetic Loci, Genome-Wide Association Study, Genotype, Heart Atria, Humans, NAV1.5 Voltage-Gated Sodium Channel, NAV1.8 Voltage-Gated Sodium Channel, T-Box Domain Proteins}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.116.001667}, author = {Christophersen, Ingrid E and Magnani, Jared W and Yin, Xiaoyan and Barnard, John and Weng, Lu-Chen and Arking, Dan E and Niemeijer, Maartje N and Lubitz, Steven A and Avery, Christy L and Duan, Qing and Felix, Stephan B and Bis, Joshua C and Kerr, Kathleen F and Isaacs, Aaron and M{\"u}ller-Nurasyid, Martina and M{\"u}ller, Christian and North, Kari E and Reiner, Alex P and Tinker, Lesley F and Kors, Jan A and Teumer, Alexander and Petersmann, Astrid and Sinner, Moritz F and B{\r u}zkov{\'a}, Petra and Smith, Jonathan D and Van Wagoner, David R and V{\"o}lker, Uwe and Waldenberger, Melanie and Peters, Annette and Meitinger, Thomas and Limacher, Marian C and Wilhelmsen, Kirk C and Psaty, Bruce M and Hofman, Albert and Uitterlinden, Andre and Krijthe, Bouwe P and Zhang, Zhu-Ming and Schnabel, Renate B and K{\"a}{\"a}b, Stefan and van Duijn, Cornelia and Rotter, Jerome I and Sotoodehnia, Nona and D{\"o}rr, Marcus and Li, Yun and Chung, Mina K and Soliman, Elsayed Z and Alonso, Alvaro and Whitsel, Eric A and Stricker, Bruno H and Benjamin, Emelia J and Heckbert, Susan R and Ellinor, Patrick T} } @article {7579, title = {Genetic loci associated with heart rate variability and their effects on cardiac disease risk.}, journal = {Nat Commun}, volume = {8}, year = {2017}, month = {2017 Jun 14}, pages = {15805}, abstract = {

Reduced cardiac vagal control reflected in low heart rate variability (HRV) is associated with greater risks for cardiac morbidity and mortality. In two-stage meta-analyses of genome-wide association studies for three HRV traits in up to 53,174 individuals of European ancestry, we detect 17 genome-wide significant SNPs in eight loci. HRV SNPs tag non-synonymous SNPs (in NDUFA11 and KIAA1755), expression quantitative trait loci (eQTLs) (influencing GNG11, RGS6 and NEO1), or are located in genes preferentially expressed in the sinoatrial node (GNG11, RGS6 and HCN4). Genetic risk scores account for 0.9 to 2.6\% of the HRV variance. Significant genetic correlation is found for HRV with heart rate (-0.74}, issn = {2041-1723}, doi = {10.1038/ncomms15805}, author = {Nolte, Ilja M and Munoz, M Loretto and Tragante, Vinicius and Amare, Azmeraw T and Jansen, Rick and Vaez, Ahmad and von der Heyde, Benedikt and Avery, Christy L and Bis, Joshua C and Dierckx, Bram and van Dongen, Jenny and Gogarten, Stephanie M and Goyette, Philippe and Hernesniemi, Jussi and Huikari, Ville and Hwang, Shih-Jen and Jaju, Deepali and Kerr, Kathleen F and Kluttig, Alexander and Krijthe, Bouwe P and Kumar, Jitender and van der Laan, Sander W and Lyytik{\"a}inen, Leo-Pekka and Maihofer, Adam X and Minassian, Arpi and van der Most, Peter J and M{\"u}ller-Nurasyid, Martina and Nivard, Michel and Salvi, Erika and Stewart, James D and Thayer, Julian F and Verweij, Niek and Wong, Andrew and Zabaneh, Delilah and Zafarmand, Mohammad H and Abdellaoui, Abdel and Albarwani, Sulayma and Albert, Christine and Alonso, Alvaro and Ashar, Foram and Auvinen, Juha and Axelsson, Tomas and Baker, Dewleen G and de Bakker, Paul I W and Barcella, Matteo and Bayoumi, Riad and Bieringa, Rob J and Boomsma, Dorret and Boucher, Gabrielle and Britton, Annie R and Christophersen, Ingrid and Dietrich, Andrea and Ehret, George B and Ellinor, Patrick T and Eskola, Markku and Felix, Janine F and Floras, John S and Franco, Oscar H and Friberg, Peter and Gademan, Maaike G J and Geyer, Mark A and Giedraitis, Vilmantas and Hartman, Catharina A and Hemerich, Daiane and Hofman, Albert and Hottenga, Jouke-Jan and Huikuri, Heikki and Hutri-K{\"a}h{\"o}nen, Nina and Jouven, Xavier and Junttila, Juhani and Juonala, Markus and Kiviniemi, Antti M and Kors, Jan A and Kumari, Meena and Kuznetsova, Tatiana and Laurie, Cathy C and Lefrandt, Joop D and Li, Yong and Li, Yun and Liao, Duanping and Limacher, Marian C and Lin, Henry J and Lindgren, Cecilia M and Lubitz, Steven A and Mahajan, Anubha and McKnight, Barbara and Zu Schwabedissen, Henriette Meyer and Milaneschi, Yuri and Mononen, Nina and Morris, Andrew P and Nalls, Mike A and Navis, Gerjan and Neijts, Melanie and Nikus, Kjell and North, Kari E and O{\textquoteright}Connor, Daniel T and Ormel, Johan and Perz, Siegfried and Peters, Annette and Psaty, Bruce M and Raitakari, Olli T and Risbrough, Victoria B and Sinner, Moritz F and Siscovick, David and Smit, Johannes H and Smith, Nicholas L and Soliman, Elsayed Z and Sotoodehnia, Nona and Staessen, Jan A and Stein, Phyllis K and Stilp, Adrienne M and Stolarz-Skrzypek, Katarzyna and Strauch, Konstantin and Sundstr{\"o}m, Johan and Swenne, Cees A and Syv{\"a}nen, Ann-Christine and Tardif, Jean-Claude and Taylor, Kent D and Teumer, Alexander and Thornton, Timothy A and Tinker, Lesley E and Uitterlinden, Andr{\'e} G and van Setten, Jessica and Voss, Andreas and Waldenberger, Melanie and Wilhelmsen, Kirk C and Willemsen, Gonneke and Wong, Quenna and Zhang, Zhu-Ming and Zonderman, Alan B and Cusi, Daniele and Evans, Michele K and Greiser, Halina K and van der Harst, Pim and Hassan, Mohammad and Ingelsson, Erik and Jarvelin, Marjo-Riitta and K{\"a}{\"a}b, Stefan and K{\"a}h{\"o}nen, Mika and Kivimaki, Mika and Kooperberg, Charles and Kuh, Diana and Lehtim{\"a}ki, Terho and Lind, Lars and Nievergelt, Caroline M and O{\textquoteright}Donnell, Chris J and Oldehinkel, Albertine J and Penninx, Brenda and Reiner, Alexander P and Riese, Harri{\"e}tte and van Roon, Arie M and Rioux, John D and Rotter, Jerome I and Sofer, Tamar and Stricker, Bruno H and Tiemeier, Henning and Vrijkotte, Tanja G M and Asselbergs, Folkert W and Brundel, Bianca J J M and Heckbert, Susan R and Whitsel, Eric A and den Hoed, Marcel and Snieder, Harold and de Geus, Eco J C} } @article {7669, title = {Genome-wide association study and meta-analysis identify loci associated with ventricular and supraventricular ectopy.}, journal = {Sci Rep}, volume = {8}, year = {2018}, month = {2018 Apr 04}, pages = {5675}, abstract = {

The genetic basis of supraventricular and ventricular ectopy (SVE, VE) remains largely uncharacterized, despite established genetic mechanisms of arrhythmogenesis. To identify novel genetic variants associated with SVE/VE in ancestrally diverse human populations, we conducted a genome-wide association study of electrocardiographically~identified SVE and VE in five cohorts including approximately 43,000 participants of African, European and Hispanic/Latino ancestry. In thirteen ancestry-stratified subgroups, we tested multivariable-adjusted associations of SVE and VE with single nucleotide polymorphism (SNP) dosage. We combined subgroup-specific association estimates in inverse variance-weighted, fixed-effects and Bayesian meta-analyses. We also combined fixed-effects meta-analytic t-test statistics for SVE and VE in multi-trait SNP association analyses. No loci reached genome-wide significance in trans-ethnic meta-analyses. However, we found genome-wide significant SNPs intronic to an apoptosis-enhancing gene previously associated with QRS interval duration (FAF1; lead SNP rs7545860; effect allele frequency = 0.02; P = 2.0 {\texttimes} 10) in multi-trait analysis among European ancestry participants and near a locus encoding calcium-dependent glycoproteins (DSC3; lead SNP rs8086068; effect allele frequency = 0.17) in meta-analysis of SVE (P = 4.0 {\texttimes} 10) and multi-trait analysis (P = 2.9 {\texttimes} 10) among African ancestry participants. The novel findings suggest several mechanisms by which genetic variation may predispose to ectopy in humans and highlight the potential value of leveraging pleiotropy in future studies of ectopy-related phenotypes.

}, issn = {2045-2322}, doi = {10.1038/s41598-018-23843-z}, author = {Napier, Melanie D and Franceschini, Nora and Gondalia, Rahul and Stewart, James D and M{\'e}ndez-Gir{\'a}ldez, R{\'a}ul and Sitlani, Colleen M and Seyerle, Amanda A and Highland, Heather M and Li, Yun and Wilhelmsen, Kirk C and Yan, Song and Duan, Qing and Roach, Jeffrey and Yao, Jie and Guo, Xiuqing and Taylor, Kent D and Heckbert, Susan R and Rotter, Jerome I and North, Kari E and Reiner, Alexander P and Zhang, Zhu-Ming and Tinker, Lesley F and Liao, Duanping and Laurie, Cathy C and Gogarten, Stephanie M and Lin, Henry J and Brody, Jennifer A and Bartz, Traci M and Psaty, Bruce M and Sotoodehnia, Nona and Soliman, Elsayed Z and Avery, Christy L and Whitsel, Eric A} }