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GWAS Study

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

Holm H, Gudbjartsson DF, Sulem P et al.

21378987 PubMed ID
GWAS Study Type
40038 Participants
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Chapter I

Publication Details

Comprehensive information about this research publication

Authors

HH
Holm H
GD
Gudbjartsson DF
SP
Sulem P
MG
Masson G
HH
Helgadottir HT
ZC
Zanon C
MO
Magnusson OT
HA
Helgason A
SJ
Saemundsdottir J
GA
Gylfason A
SH
Stefansdottir H
GS
Gretarsdottir S
MS
Matthiasson SE
TG
Thorgeirsson GM
JA
Jonasdottir A
SA
Sigurdsson A
SH
Stefansson H
WT
Werge T
RT
Rafnar T
KL
Kiemeney LA
PB
Parvez B
MR
Muhammad R
RD
Roden DM
DD
Darbar D
TG
Thorleifsson G
WG
Walters GB
KA
Kong A
TU
Thorsteinsdottir U
AD
Arnar DO
SK
Stefansson K
Chapter II

Abstract

Summary of the research findings

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.

792 European ancestry cases, 37,592 European ancestry controls

Chapter III

Study Statistics

Key metrics and study information

40038
Total Participants
GWAS
Study Type
Yes
Replicated
469 European ancestry cases, 1,185 European ancestry controls
Replication Participants
European
Ancestry
Iceland
Recruitment Country
Chapter IV

Analysis

Comprehensive review of health and genetic findings

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Analysis In Progress

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