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ALOX5AP variants are associated with in-stent restenosis after percutaneous coronary intervention

Svati H Shah1, Elizabeth R Hauser, David Crosslin

  • 1Department of Medicine, Duke University Medical Center, Durham, NC 27710, United States. svati.shah@duke.edu

Atherosclerosis
|April 1, 2008
PubMed

Insights

Genetic variations in the ALOX5AP gene are linked to in-stent restenosis after coronary artery procedures. Identifying these genetic markers may help predict restenosis risk and guide treatment decisions for patients undergoing percutaneous coronary intervention.

Area of Science:

  • Cardiovascular Genetics
  • Interventional Cardiology
  • Molecular Medicine

Background:

  • Drug-eluting stents (DES) reduce restenosis but increase thrombosis risk.
  • Accurate prediction of in-stent restenosis remains challenging.
  • Atherosclerosis risk factors overlap with in-stent restenosis risk.

Purpose of the Study:

  • To evaluate candidate atherosclerosis genes for association with in-stent restenosis.
  • To identify genetic markers that predict restenosis after percutaneous coronary intervention (PCI).

Main Methods:

  • Retrospective case-control study of 46 patients with in-stent restenosis and 46 matched controls after bare-metal stent PCI.
  • Genotyping of 82 single-nucleotide polymorphisms (SNPs) from 39 candidate atherosclerosis genes.
  • Multivariable logistic regression analysis to assess SNP and haplotype associations.

Main Results:

  • Five SNPs were significantly associated with in-stent restenosis.
  • Three ALOX5AP SNPs showed strong associations, with two increasing risk and one decreasing risk.
  • Two ALOX5AP haplotypes were also associated with in-stent restenosis risk.

Conclusions:

  • ALOX5AP, involved in the inflammatory leukotriene pathway, is associated with in-stent restenosis.
  • Genotyping ALOX5AP variants may identify patients at high risk for in-stent restenosis.
  • This could guide the appropriate use of DES in high-risk individuals.
Abstract

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