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Polymorphisms in the TNF-alpha and TNF-receptor genes in patients with coronary artery disease

R A Allen1, E M Lee, D H Roberts

  • 1Blackpool Victoria Hospital, Whinney Heys Road, Blackpool, UK.

European Journal of Clinical Investigation
|December 12, 2001
PubMed

Insights

Genetic variations in tumor necrosis factor-alpha (TNF-alpha) and its receptors are not linked to coronary artery disease (CAD). This study found no association between these gene polymorphisms and the development or severity of CAD.

Area of Science:

  • Genetics
  • Cardiovascular Medicine
  • Immunology

Background:

  • Coronary artery disease (CAD) is a complex condition influenced by multiple genes and environmental factors.
  • Atheroma formation, a key feature of CAD, involves inflammation, with tumor necrosis factor-alpha (TNF-alpha) playing a significant role.
  • Investigating genetic variations in TNF-alpha and its receptors could reveal insights into CAD pathogenesis.

Purpose of the Study:

  • To examine the association between specific polymorphisms in the TNF-alpha, TNF receptor 1, and TNF receptor 2 genes and the presence of CAD.
  • To determine if these genetic variations correlate with the extent of coronary artery disease (single-vessel vs. multivessel).

Main Methods:

  • Genotyping of TNF-alpha (-238, -308), TNF receptor 1 (-609, +10), and TNF receptor 2 (+422) polymorphisms using PCR-RFLP analysis.
  • Comparison of allele and genotype frequencies between patients with confirmed CAD (single and multivessel) and control groups (normal coronary arteries and healthy volunteers).
  • Meta-analysis of published studies on TNF-alpha gene polymorphisms (-308 and -238) combined with the current study's data.

Main Results:

  • No significant differences in allele or genotype frequencies were observed for any of the studied polymorphisms between CAD patients and control groups.
  • No association was found between TNF-alpha gene polymorphisms and the severity of CAD (single-vessel vs. multivessel disease).
  • A meta-analysis combining current data with previous studies did not reveal any significant association between TNF-alpha gene polymorphisms (-308 and -238) and CAD.

Conclusions:

  • Polymorphisms in the TNF-alpha promoter region are not associated with the development of coronary artery disease.
  • Genetic variations in TNF receptor 1 and TNF receptor 2 genes do not appear to be linked to CAD development.
Abstract

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