Abstract
Abstract On the strength of recent evidence of the activity of the combination of cisplatin and 5-fluorouracil against squamous malignancies of the esophagus and head and neck, this regimen was evaluated in a phase II trial against metastatic or recurrent squamous carcinoma of the uterine cervix. Cisplatin was administered at a dosage of 100 mg/m 2 iv bolus and 5-fluorouracil was cotinuously infused iv at a dosage of 1000 mg/m 2 /day for 4 days. In an effort to determine whether the toxicities of 5-fluorouracil could be ameliorated by coadministration of allopurinol, patients were randomized to receive allopurinol, 900 mg orally, an odd or even courses of therapy beginning 5 days before 5-fluorouracil administration and continuing until conclusion of the infusion. Fifty-two eligible patients received 177 evaluable courses of treatment. The overall response rate was 28% (8 complete responses and 6 partial responses). Toxicity was confined to nausea and vomiting (81% of courses), anemia (47%), leukopenia (37%), oral mucositis (15%), diarrhea (6%), and thrombocytopenia (4%). Allopurinol produced no improvement in treatment-related toxicities. Allopurinol did not permit substantial increases in 5-fluorouracil dosage.
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