Four genetic loci influencing electrocardiographic indices of left ventricular hypertrophy

Sonia Shah, Christopher P Nelson, Tom R Gaunt, Pim van der Harst, Timothy Barnes, Peter S Braund, Debbie A Lawlor, Juan-Pablo Casas, Sandosh Padmanabhan, Fotios Drenos, Mika Kivimaki, Philippa J Talmud, Steve E Humphries, John Whittaker, Richard W Morris, Peter H Whincup, Anna Dominiczak, Patricia B Munroe, Toby Johnson, Alison H GoodallFrancois Cambien, Patrick Diemert, Christian Hengstenberg, Willem H Ouwehand, Janine F Felix, Nicole L Glazer, Maciej Tomaszewski, Paul R Burton, Martin D Tobin, Dirk J van Veldhuisen, Rudolf A de Boer, Gerjan Navis, Wiek H van Gilst, Bongani M Mayosi, John R Thompson, Meena Kumari, Peter W MacFarlane, Ian N M Day, Aroon D Hingorani, Nilesh J Samani

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: Presence of left ventricular hypertrophy on an ECG (ECG-LVH) is widely assessed clinically and provides prognostic information in some settings. There is evidence for significant heritability of ECG-LVH. We conducted a large-scale gene-centric association analysis of 4 commonly measured indices of ECG-LVH.

METHODS AND RESULTS: We calculated the Sokolow-Lyon index, Cornell product, 12-lead QRS voltage sum, and 12-lead QRS voltage product in 10 256 individuals from 3 population-based cohorts and typed their DNA using a customized gene array (the Illumina HumanCVD BeadChip 50K array), containing 49 094 genetic variants in ≈2100 genes of cardiovascular relevance. We followed-up promising associations in 11 777 additional individuals. We identified and replicated 4 loci associated with ECG-LVH indices: 3p22.2 (SCN5A, rs6797133, P=1.22 × 10(-7)) with Cornell product and 12q13.3 (PTGES3, rs2290893, P=3.74 × 10(-8)), 15q25.2 (NMB, rs2292462, P=3.23 × 10(-9)), and 15q26.3 (IGF1R, rs4966014, P=1.26 × 10(-7)) with the 12-lead QRS voltage sum. The odds ratio of being in the top decile for the 12-lead QRS voltage sum for those carrying 6 trait-raising alleles at the 12q13.3, 15q25.2, and 15q26.3 loci versus those carrying 0 to 1 alleles was 1.60 (95% CI: 1.20 to 2.29). Lead single-nucleotide polymorphisms at the 12q13.3 and 15q25.2 loci showed significant expression quantitative trait loci effects in monocytes.

CONCLUSIONS: These findings provide novel insights into the genetic determination of ECG-LVH. The findings could help to improve our understanding of the mechanisms determining this prognostically important trait.

Original languageEnglish
Pages (from-to)626-35
Number of pages10
JournalCirculation. Cardiovascular Genetics
Volume4
Issue number6
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

Keywords

  • Adult
  • Aged
  • Cohort Studies
  • Electrocardiography
  • Female
  • Genetic Loci
  • Humans
  • Hypertrophy, Left Ventricular/diagnosis
  • Male
  • Middle Aged
  • Prognosis

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