A common variant of the AMPD1 gene predicts improved survival in patients with ischemic left ventricular dysfunction

J Card Fail. 2004 Aug;10(4):316-20. doi: 10.1016/j.cardfail.2003.10.008.

Abstract

Background: A recent retrospective study suggested that the adenosine monophosphate deaminase (AMPD)-1 gene variant C34T predicts outcome in heart failure patients. This variant might lead to ischemic preconditioning by increasing tissue adenosine. We tested whether the survival benefit of C34T occurs preferentially in the setting of ischemic left ventricular dysfunction.

Methods and results: A consecutive cohort of patients (n=390) with left ventricular ejection fraction <40% was evaluated. In the ischemic patient subgroup (n=210) multivariate analysis identified AMPD1 T allele carriage (hazard ratio=0.43, confidence interval=0.20-0.94, P=.035) as an independent predictor of transplant-free cardiovascular survival. No benefit was found in the nonischemic group although the number of events was too small to reliably exclude a benefit by genotype.

Conclusion: The AMPD1 C34T polymorphism influences transplant-free cardiovascular survival in the setting of ischemic left ventricular dysfunction.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • AMP Deaminase / genetics*
  • Adult
  • Aged
  • Alleles
  • Disease-Free Survival
  • Female
  • Follow-Up Studies
  • Gene Frequency / genetics
  • Genetic Predisposition to Disease / epidemiology
  • Genetic Predisposition to Disease / genetics
  • Genotype
  • Heart Transplantation
  • Humans
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Myocardial Ischemia / genetics*
  • Myocardial Ischemia / mortality*
  • Myocardial Ischemia / surgery
  • Predictive Value of Tests
  • Stroke Volume / genetics
  • Time Factors
  • Ventricular Dysfunction, Left / genetics*
  • Ventricular Dysfunction, Left / mortality*
  • Ventricular Dysfunction, Left / surgery

Substances

  • AMP Deaminase