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Mol Cancer Ther ; 9(8): 2423-9, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20682649

RESUMO

Prior studies suggest that tumor cell lines harboring RAS mutations display remarkable sensitivity to gemcitabine and etoposide. In a phase II clinical trial of patients with locally advanced or metastatic pancreatic cancer, we evaluated the response rate to a combination of these drugs. Forty chemo-naïve patients with nonresectable and histologically confirmed pancreatic cancer were accrued. Patients received gemcitabine 1,000 mg/m(2) (days 1 and 8) and etoposide 80 mg/m(2) (days 8, 9, and 10; 21-day cycle). The primary end point was radiological response rate. Secondary objectives were determination of overall survival, response duration (time to progression), quality of life, toxicity, and CA 19-9 biomarker response. In 35 evaluable patients, 10 exhibited a radiological partial response and 12 had stable disease in response to treatment. Twenty patients exhibited a >20% decrease in CA 19-9 biomarker levels. Median overall survival was 6.7 months for all patients (40) and 7.2 months for evaluable patients (35). Notably, four patients survived for longer than 1 year, with two patients surviving for more than 2 years. Median time to progression for evaluable patients was 3.1 months. The median overall survival for locally advanced patients was 8.8 months and 6.75 months for metastatic patients. One-year survival was 10% for all patients and 11.4% for evaluable patients. Quality of life improved in 12 patients and remained stable in 3 of the evaluable patients. The primary dose-limiting toxicities were hematologic toxicity and fatigue. These results show that the gemcitabine and etoposide combination is generally well-tolerated and exhibits a response rate similar to other published studies.


Assuntos
Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Desoxicitidina/análogos & derivados , Etoposídeo/uso terapêutico , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/patologia , Adulto , Idoso , Antineoplásicos/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Desoxicitidina/efeitos adversos , Desoxicitidina/uso terapêutico , Etoposídeo/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica/tratamento farmacológico , Estadiamento de Neoplasias , Análise de Sobrevida , Gencitabina
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