Multi-ancestry genetic analysis of gene regulation in coronary arteries prioritizes disease risk loci

Hodonsky, Chani J. and Turner, Adam W. and Khan, Mohammad Daud and Barrientos, Nelson B. and Methorst, Ruben and Ma, Lijiang and Lopez, Nicolas G. and Mosquera, Jose Verdezoto and Auguste, Gaëlle and Farber, Emily and Ma, Wei Feng and Wong, Doris and Onengut-Gumuscu, Suna and Kavousi, Maryam and Peyser, Patricia A. and van der Laan, Sander W. and Leeper, Nicholas J. and Kovacic, Jason C. and Björkegren, Johan L.M. and Miller, Clint L. (2024) Multi-ancestry genetic analysis of gene regulation in coronary arteries prioritizes disease risk loci. Cell Genomics, 4 (1). p. 100465. ISSN 2666979X

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Link to published document: http://doi.org/10.1016/j.xgen.2023.100465

Abstract

Genome-wide association studies (GWASs) have identified hundreds of risk loci for coronary artery disease (CAD). However, non-European populations are underrepresented in GWASs, and the causal gene-regulatory mechanisms of these risk loci during atherosclerosis remain unclear. We incorporated local ancestry and haplotypes to identify quantitative trait loci for expression (eQTLs) and splicing (sQTLs) in coronary arteries from 138 ancestrally diverse Americans. Of 2,132 eQTL-associated genes (eGenes), 47% were previously unreported in coronary artery; 19% exhibited cell-type-specific expression. Colocalization revealed subgroups of eGenes unique to CAD and blood pressure GWAS. Fine-mapping highlighted additional eGenes, including TBX20 and IL5. We also identified sQTLs for 1,690 genes, among which TOR1AIP1 and ULK3 sQTLs demonstrated the importance of evaluating splicing to accurately identify disease-relevant isoform expression. Our work provides a patient-derived coronary artery eQTL resource and exemplifies the need for diverse study populations and multifaceted approaches to characterize gene regulation in disease processes.

Item Type: Article
Subjects: R Medicine > R Medicine (General)
Depositing User: Repository Administrator
Date Deposited: 14 Dec 2024 04:10
Last Modified: 14 Dec 2024 04:10
URI: https://eprints.victorchang.edu.au/id/eprint/1514

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