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Am J Clin Oncol ; 41(3): 230-235, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-26709865

RESUMO

BACKGROUND: Imexon is a cyanoaziridine-derived iminopyrrolidone which has synergistic cytotoxicity with gemcitabine. A phase 1 study of the combination demonstrated good tolerance with encouraging clinical activity and thus we conducted this randomized phase II study. MATERIALS AND METHODS: Patients with measurable, metastatic, treatment-naive pancreatic adenocarcinoma were randomized 1:1 to receive gemcitabine at 1000 mg/m days 1, 8, and 15 with either imexon, 875 mg/m or placebo days 1, 8, and 15 every 28 days. The primary endpoint was overall survival. Secondary endpoints included progression-free survival and response rate. RESULTS: A total of 142 patients were randomized, 72 to the imexon containing arm and 70 to the placebo arm. Patients in the imexon arm received an average of 3.6 cycles (range, 1 to 23) compared with 4.4 (range, 1 to 21) in the placebo arm. There was no increased rate of ≥grade 3 toxicity in the imexon arm. Seven patients had objective responses in the imexon arm (13.7%), whereas 9 did in the placebo arm (17%). In the imexon arm, 23 patients had ≥50% reduction in CA 19-9 from baseline (33%), whereas 22 did in the placebo arm (31.4%). The median progression-free survival was 2.8 months in the imexon arm (95% confidence interval [CI], 2.0-4.1 m) and 3.8 months in the placebo arm (95% CI, 2.2-4.7 m), P=0.504. The median overall survival time in the imexon arm was 5.2 months (95% CI, 4.2-6.7 m) as compared with 6.8 m (95% CI, 4.9-8.5 m) in the placebo arm, P=0.6822. CONCLUSIONS: The combination of imexon and gemcitabine does not result in improved outcome as initial therapy of metastatic pancreatic adenocarcinoma.


Assuntos
Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Desoxicitidina/análogos & derivados , Hexanonas/administração & dosagem , Neoplasias Pancreáticas/tratamento farmacológico , Adenocarcinoma/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Desoxicitidina/administração & dosagem , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Pancreáticas/mortalidade , Intervalo Livre de Progressão , Gencitabina , Neoplasias Pancreáticas
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