Adenoviral-mediated gene transfer of vascular endothelial growth factor in critical limb ischemia: safety results from a phase I trialDepartment of Internal Medicine, Section of Vascular Medicine, Division of Cardiology University of Pennsylvania Health System, Philadelphia, PA, USA, mohlere{at}uphs.upenn.edu
Department of Internal Medicine, Section of Vascular Medicine, Division of Cardiology, University of Michigan Health System, Ann Arbor, MI, USA
Department of Internal Medicine, Mount Sinai Medical Center, New York, NY, USA
Decatur Memorial Hospital Cardiac and Vascular Research Institute, Decatur, IL, USA
GenVec Inc., Gaithersburg, MD, USA
Pfizer Global Research & Development, Ann Arbor, MI, USA
Department of Internal Medicine, Cornell University, New York, NY, USA Critical limb ischemia (CLI) is typifi ed by rest pain and/or tissue necrosis secondary to advanced peripheral arterial disease (PAD) and is characterized by diminution in limb per-fusion at rest. We tested the safety of an angiogenic strategy with CI-1023 (AdGV VEGF121.10), a replication-defi cient adenovirus encoding human vascular endothelial growth factor isoform 121 in patients with CLI as part of a phase I trial. Fifteen subjects >35 years of age with CLI and angiographic disease involving the infra-inguinal vessels underwent intramuscular injection of CI-1023 (4 3 108 to 4 3 1010 particle units, n = 13) or placebo (n = 2). All of the patients tolerated the injection well and there were no serious complications related to the procedure. Transient edema was noted in one patient. A total of 79 adverse events were reported over the course of one year. One death (day 136) and one malignancy (day 332) occurred in the CI-1023 group. CI-1023 appears to be well tolerated and safe for single-dose administration in patients with critical limb ischemia due to PAD. Further studies are needed to determine the efficacy of this form of therapeutic angiogenesis.
Key Words: angiogenesis endothelium
Vascular Medicine, Vol. 8, No. 1,
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