Abstract
Vascular endothelial growth factor (VEGF) has been shown to stimulate angiogenesis and myocardial perfusion. The short-term safety of VEGF gene therapy is excellent. However, there are only limited results regarding the long-term effects. The Kuopio Angiogenesis Trial (KAT) studied the efficiency and short-term safety of the local VEGF-A165 gene transfer in 103 patients with coronary artery disease. Three patient groups received either VEGF as an adenoviral (n=37), or as a plasmid/liposome vector (n=28), or as a placebo (n=38), during coronary angioplasty and stenting (percutaneous coronary intervention, PCI)AQ1. The aim of this study was to examine the long-term effects and safety of VEGF gene therapy. Patients were interviewed by telephone or with a questionnaire on their current status of health, coronary and other cardiovascular events and symptoms, working ability, exercise tolerance, other diseases, such as cancer and diabetes, as well as their personal experience of the treatment. Causes of death were clarified from hospital records. The total follow-up time was 8.1 years (range 6.9–9.7 years). Overall 82% of the patients were reached across the study. Eight (7.5%) of the patients died during the follow-up, but there was no significant difference in mortality between the groups (3/32 vs 2/26 vs 3/31 VEGF-adenovirus vs VEGF-plasmid/liposome vs placebo, respectively; P=0.88). The incidence of major adverse cardiovascular events (MACEs) (10 vs 11 vs 15; P=0.85), cancer (1 vs 4 vs 2; P=0.38) or diabetes (2 vs 2 vs 2; P=0.97) did not differ between the groups. Local intracoronary VEGF gene transfer is safe and does not increase the risk of MACE, arrhythmias, cancer, diabetes or other diseases.
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Acknowledgements
This study was supported by grants from the Kuopio University Hospital and the Helsinki University Central Hospital (EVO Grants). The Finnish Academy, Finnish Foundation for Cardiovascular Research, Clinigene EU network of excellence (LSHB-CT-2006-018933) and Ark Therapeutics Ltd. have also supported this study.
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Hedman, M., Muona, K., Hedman, A. et al. Eight-year safety follow-up of coronary artery disease patients after local intracoronary VEGF gene transfer. Gene Ther 16, 629–634 (2009). https://doi.org/10.1038/gt.2009.4
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DOI: https://doi.org/10.1038/gt.2009.4
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