JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Phase I-II trial of doxifluridine (5'DFUR) administered as long-term continuous infusion using a portable infusion pump for advanced colorectal cancer.

Doxifluridine, a new fluoropyrimidine analog, was administered to 21 patients with advanced colorectal carcinoma. The starting dose was 1.0 g/m2 given over 24 h for 90 consecutive days as a continuous infusion. Due to severe skin reactions (hand-foot syndrome), the dose was reduced stepwise to 0.75 g/m2/day. Twenty patients were evaluable for efficacy, one had an early non-toxic death. Seven out of 20 (35%) showed a partial response; disease stabilization was observed in 10 patients (50%) and three showed progressive disease after 3 months of treatment. All 17 patients who achieved a partial response or a stabilization of disease were treated until progressive disease was documented and some had therapy up to 46 weeks. Toxicity was minimal and mainly defined as hand-foot syndrome which occurred in 50% of the patients of whom three experienced severe reaction. There was no myelosuppression, renal or liver dysfunction, no cardiac alterations and only one patient experienced severe dizziness. Doxifluridine is active in advanced colorectal carcinoma when the drug is given as a continuous infusion for 90 consecutive days at a daily dose of 0.75 g/m2.

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