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GWAS Study

Genome-wide association yields new sequence variants at seven loci that associate with measures of obesity.

Thorleifsson G, Walters GB, Gudbjartsson DF et al.

19079260 PubMed ID
GWAS Study Type
117409 Participants
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Chapter I

Publication Details

Comprehensive information about this research publication

Authors

TG
Thorleifsson G
WG
Walters GB
GD
Gudbjartsson DF
SV
Steinthorsdottir V
SP
Sulem P
HA
Helgadottir A
SU
Styrkarsdottir U
GS
Gretarsdottir S
TS
Thorlacius S
JI
Jonsdottir I
JT
Jonsdottir T
OE
Olafsdottir EJ
OG
Olafsdottir GH
JT
Jonsson T
JF
Jonsson F
BK
Borch-Johnsen K
HT
Hansen T
AG
Andersen G
JT
Jorgensen T
LT
Lauritzen T
AK
Aben KK
VA
Verbeek AL
RN
Roeleveld N
KE
Kampman E
YL
Yanek LR
BL
Becker LC
TL
Tryggvadottir L
RT
Rafnar T
BD
Becker DM
GJ
Gulcher J
KL
Kiemeney LA
PO
Pedersen O
KA
Kong A
TU
Thorsteinsdottir U
SK
Stefansson K
Chapter II

Abstract

Summary of the research findings

Obesity results from the interaction of genetic and environmental factors. To search for sequence variants that affect variation in two common measures of obesity, weight and body mass index (BMI), both of which are highly heritable, we performed a genome-wide association (GWA) study with 305,846 SNPs typed in 25,344 Icelandic, 2,998 Dutch, 1,890 European Americans and 1,160 African American subjects and combined the results with previously published results from the Diabetes Genetics Initiative (DGI) on 3,024 Scandinavians. We selected 43 variants in 19 regions for follow-up in 5,586 Danish individuals and compared the results to a genome-wide study on obesity-related traits from the GIANT consortium. In total, 29 variants, some correlated, in 11 chromosomal regions reached a genome-wide significance threshold of P < 1.6 x 10(-7). This includes previously identified variants close to or in the FTO, MC4R, BDNF and SH2B1 genes, in addition to variants at seven loci not previously connected with obesity.

72,598 European ancestry individuals, 1,160 African American individuals

Chapter III

Study Statistics

Key metrics and study information

117409
Total Participants
GWAS
Study Type
Yes
Replicated
Up to 11,036 European ancestry individuals, 32,615 individuals
Replication Participants
European, African American or Afro-Caribbean
Ancestry
U.S., Iceland, Netherlands, Denmark
Recruitment Country
Chapter IV

Analysis

Comprehensive review of health and genetic findings

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Analysis In Progress

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