Angiogenic Gene Therapy (AGENT) trial in patients with stable angina pectoris

Cindy L. Grines, Matthew W. Watkins, Greg Helmer, William Penny, Jeffrey Brinker, Jonathan D. Marmur, Andrew West, Jeffery J. Rade, Pran Marrott, H. Kirk Hammond, Robert L. Engler

Research output: Contribution to journalArticlepeer-review

430 Scopus citations


Background - The angiogenic response to myocardial ischemia can be augmented in animal models by gene transfer with the use of a replication defective adenovirus (Ad) containing a human fibroblast growth factor (FGF) gene. Methods and Results - The objectives of the Angiogenic GENe Therapy (AGENT) trial were to evaluate the safety and anti-ischemic effects of 5 ascending doses of Ad5-FGF4 in patients with angina and to select potentially safe and effective doses for subsequent study. Seventy-nine patients with chronic stable angina Canadian Cardiovascular Society class 2 or 3 underwent double-blind randomization (1:3) to placebo (n=19) or Ad5-FGF4 (n=60). Safety evaluations were performed at each visit and exercise treadmill testing (ETT) at baseline and at 4 and 12 weeks. Single intracoronary administration of Ad5-FGF4 seemed to be safe and well tolerated with no immediate adverse events. Fever of <1-day duration occurred in 3 patients in the highest-dose group. Transient, asymptomatic elevations in liver enzymes occurred in 2 patients in lower-dose groups. Serious adverse events during follow-up (mean, 311 days) were not different between placebo and Ad5-FGF4. Overall, patients who received Ad5-FGF4 tended to have greater improvements in exercise time at 4 weeks (1.3 versus 0.7 minutes, P=NS, n=79). A protocol-specified, subgroup analysis showed the greatest improvement in patients with baseline ETT ≤10 minutes (1.6 versus 0.6 minutes, P=0.01, n=50). Conclusions - Results show evidence of favorable anti-ischemic effects with Ad5-FGF4 compared with placebo, and it appears to be safe. Angiogenic gene transfer with Ad5-FGF4 shows promise as a new therapeutic approach to the treatment of angina pectoris.

Original languageEnglish (US)
Pages (from-to)1291-1297
Number of pages7
Issue number11
StatePublished - Mar 19 2002
Externally publishedYes


  • Angina
  • Angiogenesis
  • Collateral circulation
  • Gene therapy

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


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