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. 2017 Feb 21;69(7):823-836.
doi: 10.1016/j.jacc.2016.11.056.

Systematic Evaluation of Pleiotropy Identifies 6 Further Loci Associated With Coronary Artery Disease

Thomas R Webb  1 Jeanette Erdmann  2 Kathleen E Stirrups  3 Nathan O Stitziel  4 Nicholas G D Masca  1 Henning Jansen  5 Stavroula Kanoni  6 Christopher P Nelson  1 Paola G Ferrario  7 Inke R König  7 John D Eicher  8 Andrew D Johnson  8 Stephen E Hamby  1 Christer Betsholtz  9 Arno Ruusalepp  10 Oscar Franzén  11 Eric E Schadt  12 Johan L M Björkegren  13 Peter E Weeke  14 Paul L Auer  15 Ursula M Schick  16 Yingchang Lu  17 He Zhang  18 Marie-Pierre Dube  19 Anuj Goel  20 Martin Farrall  20 Gina M Peloso  21 Hong-Hee Won  22 Ron Do  23 Erik van Iperen  24 Jochen Kruppa  25 Anubha Mahajan  26 Robert A Scott  27 Christina Willenborg  28 Peter S Braund  1 Julian C van Capelleveen  29 Alex S F Doney  30 Louise A Donnelly  30 Rosanna Asselta  31 Pier A Merlini  32 Stefano Duga  31 Nicola Marziliano  33 Josh C Denny  34 Christian Shaffer  35 Nour Eddine El-Mokhtari  36 Andre Franke  37 Stefanie Heilmann  38 Christian Hengstenberg  39 Per Hoffmann  40 Oddgeir L Holmen  41 Kristian Hveem  42 Jan-Håkan Jansson  43 Karl-Heinz Jöckel  44 Thorsten Kessler  5 Jennifer Kriebel  45 Karl L Laugwitz  46 Eirini Marouli  6 Nicola Martinelli  47 Mark I McCarthy  48 Natalie R Van Zuydam  49 Christa Meisinger  50 Tõnu Esko  51 Evelin Mihailov  52 Stefan A Escher  53 Maris Alver  54 Susanne Moebus  44 Andrew D Morris  55 Jarma Virtamo  56 Majid Nikpay  57 Oliviero Olivieri  47 Sylvie Provost  58 Alaa AlQarawi  59 Neil R Robertson  60 Karen O Akinsansya  61 Dermot F Reilly  61 Thomas F Vogt  61 Wu Yin  61 Folkert W Asselbergs  62 Charles Kooperberg  63 Rebecca D Jackson  64 Eli Stahl  65 Martina Müller-Nurasyid  66 Konstantin Strauch  67 Tibor V Varga  53 Melanie Waldenberger  68 Wellcome Trust Case Control ConsortiumLingyao Zeng  5 Rajiv Chowdhury  69 Veikko Salomaa  56 Ian Ford  70 J Wouter Jukema  71 Philippe Amouyel  72 Jukka Kontto  56 MORGAM InvestigatorsBørge G Nordestgaard  73 Jean Ferrières  74 Danish Saleheen  75 Naveed Sattar  76 Praveen Surendran  77 Aline Wagner  78 Robin Young  69 Joanna M M Howson  69 Adam S Butterworth  79 John Danesh  80 Diego Ardissino  81 Erwin P Bottinger  82 Raimund Erbel  44 Paul W Franks  83 Domenico Girelli  47 Alistair S Hall  84 G Kees Hovingh  29 Adnan Kastrati  85 Wolfgang Lieb  86 Thomas Meitinger  87 William E Kraus  88 Svati H Shah  88 Ruth McPherson  57 Marju Orho-Melander  89 Olle Melander  90 Andres Metspalu  54 Colin N A Palmer  30 Annette Peters  91 Daniel J Rader  92 Muredach P Reilly  93 Ruth J F Loos  94 Alex P Reiner  95 Dan M Roden  96 Jean-Claude Tardif  19 John R Thompson  97 Nicholas J Wareham  27 Hugh Watkins  20 Cristen J Willer  98 Nilesh J Samani  99 Heribert Schunkert  5 Panos Deloukas  100 Sekar Kathiresan  101 Myocardial Infarction Genetics and CARDIoGRAM Exome Consortia Investigators
Affiliations

Systematic Evaluation of Pleiotropy Identifies 6 Further Loci Associated With Coronary Artery Disease

Thomas R Webb et al. J Am Coll Cardiol. .

Abstract

Background: Genome-wide association studies have so far identified 56 loci associated with risk of coronary artery disease (CAD). Many CAD loci show pleiotropy; that is, they are also associated with other diseases or traits.

Objectives: This study sought to systematically test if genetic variants identified for non-CAD diseases/traits also associate with CAD and to undertake a comprehensive analysis of the extent of pleiotropy of all CAD loci.

Methods: In discovery analyses involving 42,335 CAD cases and 78,240 control subjects we tested the association of 29,383 common (minor allele frequency >5%) single nucleotide polymorphisms available on the exome array, which included a substantial proportion of known or suspected single nucleotide polymorphisms associated with common diseases or traits as of 2011. Suggestive association signals were replicated in an additional 30,533 cases and 42,530 control subjects. To evaluate pleiotropy, we tested CAD loci for association with cardiovascular risk factors (lipid traits, blood pressure phenotypes, body mass index, diabetes, and smoking behavior), as well as with other diseases/traits through interrogation of currently available genome-wide association study catalogs.

Results: We identified 6 new loci associated with CAD at genome-wide significance: on 2q37 (KCNJ13-GIGYF2), 6p21 (C2), 11p15 (MRVI1-CTR9), 12q13 (LRP1), 12q24 (SCARB1), and 16q13 (CETP). Risk allele frequencies ranged from 0.15 to 0.86, and odds ratio per copy of the risk allele ranged from 1.04 to 1.09. Of 62 new and known CAD loci, 24 (38.7%) showed statistical association with a traditional cardiovascular risk factor, with some showing multiple associations, and 29 (47%) showed associations at p < 1 × 10-4 with a range of other diseases/traits.

Conclusions: We identified 6 loci associated with CAD at genome-wide significance. Several CAD loci show substantial pleiotropy, which may help us understand the mechanisms by which these loci affect CAD risk.

Keywords: cholesteryl ester transfer protein; expression quantitative trait loci; genetics; genome-wide association; single nucleotide polymorphism.

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Figures

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Graphical abstract
Central Illustration
Central Illustration
Significant Associations of CAD Loci With Cardiovascular Risk Factors This chord diagram depicts associations that passed Bonferroni correction (Table 2). Connections indicate that single nucleotide polymorphisms at respective loci associate with both coronary artery disease (CAD) and the respective risk factor; they do not imply that the risk factor causally explains the association with CAD. Red indicates new CAD loci. BMI = body mass index; HDL = high-density lipoprotein; LDL = low-density lipoprotein.

Comment in

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