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J Clin Oncol ; 9(4): 625-30, 1991 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-2066758

RESUMO

Twenty-two patients with advanced colorectal carcinoma were enrolled in this study. Ten patients had received prior chemotherapy that included the combination of fluorouracil (5-FU) and leucovorin (LV). All patients required subcutaneous port insertion and portable external infusion pumps to allow outpatient treatment. 5-FU (2,600 mg/m2) was administered concurrently with LV (500 mg/m2) over 24 hours of continuous infusion. The mean steady-state plasma concentration of 5-FU was 10 mumol/L (range, 7 to 14 mumol/L). The 5-FU dose was based on our previous phase I study, in which maximum-tolerated dose (MTD) of 5-FU was determined to be 2,600 mg/m2 in combination with a fixed dose of LV at 500 mg/m2. The treatment was repeated weekly. Twenty-two patients received a total of 560 courses of treatment. Eleven instances of grade 2-3 toxicity were observed: diarrhea (five), stomatitis (three), hand/foot syndrome (three). The overall objective response was 45% (10 of 22) and among previously untreated patients was 58%. Three of the responders achieved complete response (CR), with lung and liver as the metastatic sites. The median duration of survival for the previously untreated patients was not reached at 22 months, and was 10 months for the previously treated patients. These results suggest that short-term infusional therapy of 5-FU and LV in patients with advanced metastatic colorectal cancer generates acceptable toxicity, with equivalent or superior survivability in previously treated and untreated patients versus alternative methods of administration of the two agents.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Adulto , Idoso , Assistência Ambulatorial , Neoplasias Colorretais/sangue , Avaliação de Medicamentos , Feminino , Fluoruracila/administração & dosagem , Fluoruracila/sangue , Humanos , Infusões Intravenosas , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Indução de Remissão , Taxa de Sobrevida
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