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Ma, Lijiang; Bryce, Nicole S.; Turner, Adam W.; Di Narzo, Antonio F.; Rahman, Karishma; Xu, Yang; Ermel, Raili; Sukhavasi, Katyayani; d’Escamard, Valentina; Chandel, Nirupama; V’Gangula, Bhargavi; Wolhuter, Kathryn; Kadian-Dodov, Daniella; Franzen, Oscar; Ruusalepp, Arno; Hao, Ke; Miller, Clint L.; Björkegren, Johan L. M.; Kovacic, Jason C.

The HDAC9-associated risk locus promotes coronary artery disease by governing TWIST1

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  • Media type: E-Article
  • Title: The HDAC9-associated risk locus promotes coronary artery disease by governing TWIST1
  • Contributor: Ma, Lijiang; Bryce, Nicole S.; Turner, Adam W.; Di Narzo, Antonio F.; Rahman, Karishma; Xu, Yang; Ermel, Raili; Sukhavasi, Katyayani; d’Escamard, Valentina; Chandel, Nirupama; V’Gangula, Bhargavi; Wolhuter, Kathryn; Kadian-Dodov, Daniella; Franzen, Oscar; Ruusalepp, Arno; Hao, Ke; Miller, Clint L.; Björkegren, Johan L. M.; Kovacic, Jason C.
  • Published: Public Library of Science (PLoS), 2022
  • Published in: PLOS Genetics, 18 (2022) 6, Seite e1010261
  • Language: English
  • DOI: 10.1371/journal.pgen.1010261
  • ISSN: 1553-7404
  • Origination:
  • Footnote:
  • Description: Genome wide association studies (GWAS) have identified thousands of single nucleotide polymorphisms (SNPs) associated with the risk of common disorders. However, since the large majority of these risk SNPs reside outside gene-coding regions, GWAS generally provide no information about causal mechanisms regarding the specific gene(s) that are affected or the tissue(s) in which these candidate gene(s) exert their effect. The ‘gold standard’ method for understanding causal genes and their mechanisms of action are laborious basic science studies often involving sophisticated knockin or knockout mouse lines, however, these types of studies are impractical as a high-throughput means to understand the many risk variants that cause complex diseases like coronary artery disease (CAD). As a solution, we developed a streamlined, data-driven informatics pipeline to gain mechanistic insights on complex genetic loci. The pipeline begins by understanding the SNPs in a given locus in terms of their relative location and linkage disequilibrium relationships, and then identifies nearby expression quantitative trait loci (eQTLs) to determine their relative independence and the likely tissues that mediate their disease-causal effects. The pipeline then seeks to understand associations with other disease-relevant genes, disease sub-phenotypes, potential causality (Mendelian randomization), and the regulatory and functional involvement of these genes in gene regulatory co-expression networks (GRNs). Here, we applied this pipeline to understand a cluster of SNPs associated with CAD within and immediately adjacent to the gene encodingHDAC9. Our pipeline demonstrated, and validated, that this locus is causal for CAD by modulation ofTWIST1expression levels in the arterial wall, and by also governing a GRN related to metabolic function in skeletal muscle. Our results reconciled numerous prior studies, and also provided clear evidence that this locus does not govern HDAC9 expression, structure or function. This pipeline should be considered as a powerful and efficient way to understand GWAS risk loci in a manner that better reflects the highly complex nature of genetic risk associated with common disorders.
  • Access State: Open Access