Genome-wide analysis yields new loci associating with aortic valve stenosis

Anna Helgadottir*, Gudmar Thorleifsson, Solveig Gretarsdottir, Olafur A. Stefansson, Vinicius Tragante, Rosa B. Thorolfsdottir, Ingileif Jonsdottir, Thorsteinn Bjornsson, Valgerdur Steinthorsdottir, Niek Verweij, Jonas B. Nielsen, Wei Zhou, Lasse Westergaard Folkersen, Andreas Martinsson, Mahyar Heydarpour, Siddharth Prakash, Gylfi Oskarsson, Tomas Gudbjartsson, Arnar Geirsson, Isleifur OlafssonEmil L. Sigurdsson, Peter Almgren, Olle Melander, Anders Franco-Cereceda, Anders Hamsten, Lars Fritsche, Maoxuan Lin, Bo Yang, Whitney Hornsby, Dongchuan Guo, Chad M. Brummett, Goncalo Abecasis, Michael Mathis, Dianna Milewicz, Simon C. Body, Per Eriksson, Cristen J. Willer, Kristian Hveem, Christopher Newton-Cheh, J. Gustav Smith, Ragnar Danielsen, Gudmundur Thorgeirsson, Unnur Thorsteinsdottir, Daniel F. Gudbjartsson, Hilma Holm, Kari Stefansson

*Corresponding author for this work

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    Aortic valve stenosis (AS) is the most common valvular heart disease, and valve replacement is the only definitive treatment. Here we report a large genome-wide association (GWA) study of 2,457 Icelandic AS cases and 349,342 controls with a follow-up in up to 4,850 cases and 451,731 controls of European ancestry. We identify two new AS loci, on chromosome 1p21 near PALMD (rs7543130; odds ratio (OR) = 1.20, P = 1.2 x 10(-22)) and on chromosome 2q22 in TEX41 (rs1830321; OR = 1.15, P = 1.8 x 10(-13)). Rs7543130 also associates with bicuspid aortic valve (BAV) (OR = 1.28, P = 6.6 x 10(-10)) and aortic root diameter (P = 1.30 x 10(-8)), and rs1830321 associates with BAV (OR = 1.12, P = 5.3 x 10(-3)) and coronary artery disease (OR = 1.05, P = 9.3 x 10(-5)). The results implicate both cardiac developmental abnormalities and atherosclerosis-like processes in the pathogenesis of AS. We show that several pathways are shared by CAD and AS. Causal analysis suggests that the shared risk factors of Lp(a) and non-high-density lipoprotein cholesterol contribute substantially to the frequent co-occurence of these diseases.
    Original languageEnglish
    Article number987
    JournalNature Communications
    Issue number1
    Number of pages10
    Publication statusPublished - 2018

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