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Elsevier, Journal of the American College of Cardiology, 13(68), p. 1435-1448, 2016

DOI: 10.1016/j.jacc.2016.07.729

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52 Genetic Loci Influencing Myocardial Mass

Journal article published in 2016 by Pim van der Harst, Jessica van Setten, Niek Verweij, Georg Vogler, Lude Franke, Matthew T. Maurano, Xinchen Wang, Irene Mateo Leach, Mark Eijgelsheim, Nona Sotoodehnia, Caroline Hayward, Rossella Sorice, Osorio Meirelles, Leo-Pekka Lyytikäinen, Ozren Polašek and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

BACKGROUND: Myocardial mass is a key determinant of cardiac muscle function and hypertrophy. Myocardial depolarization leading to cardiac muscle contraction is reflected by the amplitude and duration of the QRS complex on the electrocardiogram (ECG). Abnormal QRS amplitude or duration reflect changes in myocardial mass and conduction, and are associated with increased risk of heart failure and death. OBJECTIVES: This meta-analysis sought to gain insights into the genetic determinants of myocardial mass. METHODS: We carried out a genome-wide association meta-analysis of 4 QRS traits in up to 73,518 individuals of European ancestry, followed by extensive biological and functional assessment. RESULTS: We identified 52 genomic loci, of which 32 are novel, that are reliably associated with 1 or more QRS phenotypes at p