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GWAS Study

A large electronic-health-record-based genome-wide study of serum lipids.

Hoffmann TJ, Theusch E, Haldar T et al.

29507422 PubMed ID
GWAS Study Type
276396 Participants
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Chapter I

Publication Details

Comprehensive information about this research publication

Authors

HT
Hoffmann TJ
TE
Theusch E
HT
Haldar T
RD
Ranatunga DK
JE
Jorgenson E
MM
Medina MW
KM
Kvale MN
KP
Kwok PY
SC
Schaefer C
KR
Krauss RM
IC
Iribarren C
RN
Risch N
Chapter II

Abstract

Summary of the research findings

A genome-wide association study (GWAS) of 94,674 ancestrally diverse Kaiser Permanente members using 478,866 longitudinal electronic health record (EHR)-derived measurements for untreated serum lipid levels empowered multiple new findings: 121 new SNP associations (46 primary, 15 conditional, and 60 in meta-analysis with Global Lipids Genetic Consortium data); an increase of 33-42% in variance explained with multiple measurements; sex differences in genetic impact (greater impact in females for LDL, HDL, and total cholesterol and the opposite for triglycerides); differences in variance explained among non-Hispanic whites, Latinos, African Americans, and East Asians; genetic dominance and epistatic interaction, with strong evidence for both at the ABO and FUT2 genes for LDL; and tissue-specific enrichment of GWAS-associated SNPs among liver, adipose, and pancreas eQTLs. Using EHR pharmacy data, both LDL and triglyceride genetic risk scores (477 SNPs) were strongly predictive of age at initiation of lipid-lowering treatment. These findings highlight the value of longitudinal EHRs for identifying new genetic features of cholesterol and lipoprotein metabolism with implications for lipid treatment and risk of coronary heart disease.

265,204 European ancestry individuals, 7,795 Hispanic individuals, 6,855 East Asian ancestry individuals, 2,958 African American individuals, 439 South Asian ancestry individuals

Chapter III

Study Statistics

Key metrics and study information

276396
Total Participants
GWAS
Study Type
No
Replicated
Hispanic or Latin American, European, South Asian, African American or Afro-Caribbean
Ancestry
Chapter IV

Analysis

Comprehensive review of health and genetic findings

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Analysis In Progress

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