Identification of ADAMTS7 as a novel locus for coronary atherosclerosis and association of ABO with myocardial infarction in the presence of coronary atherosclerosis: two genome-wide association studies.
BACKGROUND
We tested whether genetic factors distinctly contribute to either development of coronary atherosclerosis or, specifically, to myocardial infarction in existing coronary atherosclerosis.


METHODS
We did two genome-wide association studies (GWAS) with coronary angiographic phenotyping in participants of European ancestry. To identify loci that predispose to angiographic coronary artery disease (CAD), we compared individuals who had this disorder (n=12,393) with those who did not (controls, n=7383). To identify loci that predispose to myocardial infarction, we compared patients who had angiographic CAD and myocardial infarction (n=5783) with those who had angiographic CAD but no myocardial infarction (n=3644).


RESULTS
In the comparison of patients with angiographic CAD versus controls, we identified a novel locus, ADAMTS7 (p=4·98×10(-13)). In the comparison of patients with angiographic CAD who had myocardial infarction versus those with angiographic CAD but no myocardial infarction, we identified a novel association at the ABO locus (p=7·62×10(-9)). The ABO association was attributable to the glycotransferase-deficient enzyme that encodes the ABO blood group O phenotype previously proposed to protect against myocardial infarction.


CONCLUSIONS
Our findings indicate that specific genetic predispositions promote the development of coronary atherosclerosis whereas others lead to myocardial infarction in the presence of coronary atherosclerosis. The relation to specific CAD phenotypes might modify how novel loci are applied in personalised risk assessment and used in the development of novel therapies for CAD.


BACKGROUND
The PennCath and MedStar studies were supported by the Cardiovascular Institute of the University of Pennsylvania, by the MedStar Health Research Institute at Washington Hospital Center and by a research grant from GlaxoSmithKline. The funding and support for the other cohorts contributing to the paper are described in the webappendix.
Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA 19104-6160, USA. muredach@mail.med.upenn.edu
Muredach P
MP
Reilly
Mingyao
M
Li
Jing
J
He
Jane F
JF
Ferguson
Ioannis M
IM
Stylianou
Nehal N
NN
Mehta
Mary Susan
MS
Burnett
Joseph M
JM
Devaney
Christopher W
CW
Knouff
John R
JR
Thompson
Benjamin D
BD
Horne
Alexandre F R
AF
Stewart
Themistocles L
TL
Assimes
Philipp S
PS
Wild
Hooman
H
Allayee
Patrick Linsel
PL
Nitschke
Riyaz S
RS
Patel
Nicola
N
Martinelli
Domenico
D
Girelli
Arshed A
AA
Quyyumi
Jeffrey L
JL
Anderson
Jeanette
J
Erdmann
Alistair S
AS
Hall
Heribert
H
Schunkert
Thomas
T
Quertermous
Stefan
S
Blankenberg
Stanley L
SL
Hazen
Robert
R
Roberts
Sekar
S
Kathiresan
Nilesh J
NJ
Samani
Stephen E
SE
Epstein
Daniel J
DJ
Rader
D000017:ABO Blood-Group System / Q000235:genetics*; D051722:ADAM Proteins / Q000235:genetics*; D000071118:ADAMTS7 Protein; D000328:Adult; D000368:Aged; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000097:blood / Q000150:complications / Q000000981:diagnostic imaging / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D056426:Genetic Loci; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood / Q000150:complications / Q000000981:diagnostic imaging / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide
D000017:ABO Blood-Group System; D051722:ADAM Proteins; D000071118:ADAMTS7 Protein; C121534:ADAMTS7 protein, human
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