Genome-wide association study in a Lebanese cohort confirms PHACTR1 as a major determinant of coronary artery stenosis

  • Jörg Hager
  • , Yoichiro Kamatani
  • , Jean Baptiste Cazier
  • , Sonia Youhanna
  • , Michella Ghassibe-Sabbagh
  • , Daniel E. Platt
  • , Antoine B. Abchee
  • , Jihane Romanos
  • , Georges Khazen
  • , Raed Othman
  • , Danielle A. Badro
  • , Marc Haber
  • , Angelique K. Salloum
  • , Bouchra Douaihy
  • , Nabil Shasha
  • , Samer Kabbani
  • , Hana Sbeite
  • , Elie Chammas
  • , Hamid el Bayeh
  • , Francis Rousseau
  • Diana Zelenika, Ivo Gut, Mark Lathrop, Martin Farrall, Dominique Gauguier, Pierre A. Zalloua

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

The manifestation of coronary artery disease (CAD) follows a well-choreographed series of events that includes damage of arterial endothelial cells and deposition of lipids in the sub-endothelial layers. Genome-wide association studies (GWAS) of multiple populations with distinctive genetic and lifestyle backgrounds are a crucial step in understanding global CAD pathophysiology. In this study, we report a GWAS on the genetic basis of arterial stenosis as measured by cardiac catheterization in a Lebanese population. The locus of the phosphatase and actin regulator 1 gene (PHACTR1) showed association with coronary stenosis in a discovery experiment with genome wide data in 1,949 individuals (rs9349379, OR = 1.37, p = 1.57×10 -5). The association was replicated in an additional 2,547 individuals (OR = 1.31, p = 8.85×10 -6), leading to genome-wide significant association in a combined analysis (OR = 1.34, p = 8.02×10 -10). Results from this GWAS support a central role of PHACTR1 in CAD susceptibility irrespective of lifestyle and ethnic divergences. This association provides a plausible component for understanding molecular mechanisms involved in the formation of stenosis in cardiac vessels and a potential drug target against CAD.

Original languageBritish English
Article numbere38663
JournalPLoS ONE
Volume7
Issue number6
DOIs
StatePublished - 20 Jun 2012

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