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A phase I/II clinical trial in localized prostate cancer of an adenovirus expressing nitroreductase with CB1984
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Patel, Prashant, Young, J Graham, Mautner, Vivien, Ashdown, Daniel, Bonney, Sarah, Pineda, Robert G., Collins, Stuart I., Searle, Peter F., Hull, Diana, Peers, Elizabeth, Chester, John, Wallace, D. Michael, Doherty, Alan, Leung, Hing, Young, Lawrence S. and James, Nicholas D.. (2009) A phase I/II clinical trial in localized prostate cancer of an adenovirus expressing nitroreductase with CB1984. Molecular Therapy, Vol.17 (No.7). pp. 1292-1299. ISSN 1525-0016
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Official URL: http://dx.doi.org/10.1038/mt.2009.80
Abstract
We report a phase I/II clinical trial in prostate cancer (PCa) using direct intraprostatic injection of a replication defective adenovirus vector (CTL102) encoding bacterial nitroreductase (NTR) in conjunction with systemic prodrug CB1954. One group of patients with localized PCa scheduled for radical prostatectomy received virus alone, prior to surgery, in a dose escalation to establish safety, tolerability, and NTR expression. A second group with local failure following primary treatment received virus plus prodrug to establish safety and tolerability. Based on acceptable safety data and indications of prostate-specific antigen (PSA) responses, an extended cohort received virus at a single dose level plus prodrug. The vector was well tolerated with minimal side effects, had a short half-life in the circulation, and stimulated a robust antibody response. Immunohistochemistry of resected prostate demonstrated NTR staining in tumor and glandular epithelium at all dose levels [5 × 1010–1 × 1012 virus particles (vp)]. A total of 19 patients received virus plus prodrug and 14 of these had a repeat treatment; minimal toxicity was observed and there was preliminary evidence of change in PSA kinetics, with an increase in the time to 10% PSA progression in 6 out of 18 patients at 6 months.
| Item Type: | Journal Article |
|---|---|
| Divisions: | Faculty of Medicine > Warwick Medical School |
| Journal or Publication Title: | Molecular Therapy |
| Publisher: | Nature Publishing Group |
| ISSN: | 1525-0016 |
| Date: | July 2009 |
| Volume: | Vol.17 |
| Number: | No.7 |
| Page Range: | pp. 1292-1299 |
| Identification Number: | 10.1038/mt.2009.80 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/51868 |
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