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Common genetic variants and modifiable risk factors underpin hypertrophic cardiomyopathy susceptibility and expressivity

  • Andrew R. Harper
  • , Anuj Goel
  • , Christopher Grace
  • , Kate L. Thomson
  • , Steffen E. Petersen
  • , Xiao Xu
  • , Adam Waring
  • , Elizabeth Ormondroyd
  • , Christopher M. Kramer
  • , Carolyn Y. Ho
  • , Stefan Neubauer
  • , HCMR Investigators
  • , Rafik Tadros
  • , James S. Ware
  • , Connie R. Bezzina
  • , Martin Farrall
  • , Hugh Watkins
  • University of Oxford
  • Oxford University Hospitals NHS Foundation Trust
  • Queen Mary University of London
  • Imperial College London
  • University of Virginia
  • Harvard University
  • MedStar Heart and Vascular Institute, Washington, DC, USA
  • National Institutes of Health
  • Johns Hopkins University
  • St George's University Hospitals NHS Foundation Trust
  • Sant’Andrea Hospital
  • Glasgow Cardiovascular Research Centre
  • University of Bologna
  • University Hospitals Birmingham NHS Foundation Trust
  • University Hospitals Bristol and Weston NHS Foundation Trust
  • Paediatric Allergy Group, Department of Women and Children's Health, King's College London, St. Thomas' Hospital, London, UK
  • Northwestern University
  • Peter Munk Cardiac Centre
  • University of Aberdeen
  • Cleveland Clinic Foundation
  • McGill University
  • University Hospital Southampton NHS Foundation Trust
  • Heidelberg University 
  • Oregon Health and Science University
  • University of Michigan, Ann Arbor
  • Yale University
  • Duke University
  • Icahn School of Medicine at Mount Sinai
  • Université Laval
  • Robert Bosch Foundation
  • Tufts University
  • University of Leicester
  • Erasmus University Rotterdam
  • Barts Health NHS Trust
  • Houston Methodist
  • University of Amsterdam
  • University of Montreal
  • National Heart & Lung Institute, Imperial College, London, UK
  • Amsterdam UMC - University of Amsterdam
  • Radcliffe Department of Medicine, Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
  • Welcome Centre for Human Genetics, University of Oxford, Oxford, UK
  • NIHR Oxford Biomedical Research Centre, OUH Foundation Trust, Oxford, OX3 7LE, UK

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Hypertrophic cardiomyopathy (HCM) is a common, serious, genetic heart disorder. Rare pathogenic variants in sarcomere genes cause HCM, but with unexplained phenotypic heterogeneity. Moreover, most patients do not carry such variants. We report a genome-wide association study of 2,780 cases and 47,486 controls that identified 12 genome-wide-significant susceptibility loci for HCM. Single-nucleotide polymorphism heritability indicated a strong polygenic influence, especially for sarcomere-negative HCM (64% of cases; h2g = 0.34 ± 0.02). A genetic risk score showed substantial influence on the odds of HCM in a validation study, halving the odds in the lowest quintile and doubling them in the highest quintile, and also influenced phenotypic severity in sarcomere variant carriers. Mendelian randomization identified diastolic blood pressure (DBP) as a key modifiable risk factor for sarcomere-negative HCM, with a one standard deviation increase in DBP increasing the HCM risk fourfold. Common variants and modifiable risk factors have important roles in HCM that we suggest will be clinically actionable.
Original languageEnglish
Pages (from-to)135-142
Number of pages8
JournalNature genetics
Volume53
Issue number2
Early online date2021
DOIs
Publication statusPublished - Feb 2021

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