A rare variant in MYH6 is associated with high risk of sick sinus syndrome

Hilma Holm, Daniel F Gudbjartsson, Patrick Sulem, Gisli Masson, Hafdis Th Helgadottir, Carlo Zanon, Olafur Th Magnusson, Agnar Helgason, Jona Saemundsdottir, Arnaldur Gylfason, Hrafnhildur Stefansdottir, Solveig Gretarsdottir, Stefan E Matthiasson, Gu Mundur Thorgeirsson, Aslaug Jonasdottir, Asgeir Sigurdsson, Hreinn Stefansson, Thomas Werge, Thorunn Rafnar, Lambertus A KiemeneyBabar Parvez, Raafia Muhammad, Dan M Roden, Dawood Darbar, Gudmar Thorleifsson, G Bragi Walters, Augustine Kong, Unnur Thorsteinsdottir, David O Arnar, Kari Stefansson

    202 Citations (Scopus)

    Abstract

    Through complementary application of SNP genotyping, whole-genome sequencing and imputation in 38,384 Icelanders, we have discovered a previously unidentified sick sinus syndrome susceptibility gene, MYH6, encoding the alpha heavy chain subunit of cardiac myosin. A missense variant in this gene, c.2161C>T, results in the conceptual amino acid substitution p.Arg721Trp, has an allelic frequency of 0.38% in Icelanders and associates with sick sinus syndrome with an odds ratio = 12.53 and P = 1.5-10'29. We show that the lifetime risk of being diagnosed with sick sinus syndrome is around 6% for non-carriers of c.2161C>T but is approximately 50% for carriers of the c.2161C>T variant.

    Original languageEnglish
    JournalNature Genetics
    Volume43
    Issue number4
    Pages (from-to)316-20
    Number of pages5
    ISSN1061-4036
    DOIs
    Publication statusPublished - Feb 2011

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