An international multicentre randomized controlled trial of G17DT in patients with pancreatic cancer

Gilliam, Andrew and Broome, Paul and Topuzov, Eskender and Garin, Avgust and Pulay, Istvan and Humphreys, Jane and Whitehead, Anne and Takhar, Arjun and Rowlands, Brian and Beckingham, Ian (2012) An international multicentre randomized controlled trial of G17DT in patients with pancreatic cancer. Pancreas, 41 (3). pp. 374-379. ISSN 0885-3177

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Objectives: This study aimed to investigate G17DT, an immunogen producing neutralising antibodies against the tumour growth factors amidated and glycine-extended forms of gastrin17, in the treatment of pancreatic cancer. Methods: A randomised, double blind, placebo-controlled, group-sequential multicentre trial of G17DT in patients with advanced pancreatic cancer unsuitable for or unwilling to take chemotherapy. Inclusion criteria were a Karnofsky performance score of 60 or higher and a life expectancy of more than 2 months. Patients received G17DT or placebo emulsion at weeks 0, 1, 3, 24 and 52. The primary end point was survival, and the secondary end points were tolerability, Karnofsky performance. Results: A total of 154 patients were recruited: 79 G17DT and 75 placebo. A final analysis of the intention-to-treat population, using a proportional hazards model, stratifying by disease stage and adjusting for interim analysis, gave a hazard ratio for mortality of 0.75 (95% confidence interval, 0.51-1.10, P=0.138; G17DT/placebo). A conventional analysis without adjustment for disease stage or interim analysis, censoring for chemotherapy and excluding protocol violators, gave median survival periods of 151 days (G17DT) and 82 days (placebo) (log-rank test, P = 0.03). Patients developing anti-G17DT responses (73.8%) survived longer than nonresponders or those on placebo(median survival, 176 vs 63 vs 83; log-rank test, P=0.003). G17DT was well tolerated.

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28 May 2012 13:42
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21 Nov 2022 22:20