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


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 < or =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.
Grines
Cindy L
CL
Division of Cardiology, William Beaumont Hospital, 3601 W 13 Mile Road, Royal Oak, MI 48073-6769, USA. cgrines@beaumont.edu
Watkins
Matthew W
MW
Helmer
Greg
G
Penny
William
W
Brinker
Jeffrey
J
Marmur
Jonathan D
JD
West
Andrew
A
Rade
Jeffery J
JJ
Marrott
Pran
P
Hammond
H Kirk
HK
Engler
Robert L
RL
D000256:Adenoviridae / Q000235:genetics*; D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000628:therapy*; D015331:Cohort Studies; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004452:Echocardiography; D005080:Exercise Test / Q000187:drug effects; D005260:Female; D005346:Fibroblast Growth Factors / Q000008:administration & dosage* / Q000009:adverse effects / Q000235:genetics; D005500:Follow-Up Studies; D015316:Genetic Therapy / Q000009:adverse effects / Q000379:methods*; D005822:Genetic Vectors / Q000008:administration & dosage / Q000009:adverse effects / Q000235:genetics; D006801:Humans; D007269:Injections, Intra-Arterial; D008099:Liver / Q000187:drug effects / Q000201:enzymology; D008297:Male; D008875:Middle Aged; D018919:Neovascularization, Physiologic; D016896:Treatment Outcome
C112971:fibroblast growth factor 14; D005346:Fibroblast Growth Factors