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  • Title: Further experience with recombinant interferon alfa-2a with vinblastine in metastatic renal cell carcinoma: a progress report.
    Author: Fosså SD, De Garis ST.
    Journal: Int J Cancer Suppl; 1987; 1():36-40. PubMed ID: 3476476.
    Abstract:
    Thirty-three patients with measurable metastatic renal cell carcinoma were entered into 2 consecutive phase II protocols using interferon alfa-2a. In protocol I, 20 patients were treated with interferon alfa-2a at a dose of 36 X 10(6) IU i.m. t.i.w. Vinblastine was also given to 18 of these patients at a dose of 0.10-0.15 mg/kg i.v. every 2-3 weeks, depending on the blood cell count. In protocol 2, 13 patients received interferon alfa-2a at a dose of 18 X 10(6) i.m. t.i.w. with stepwise dose escalations of 3 X 10(6) IU being given every 2 weeks to 8 patients. Vinblastine, at a dose of 0.1 mg/kg every 3 weeks, was also given to 12 patients in protocol 2. Partial responses were seen in a total of 9 evaluable patients (lung, 5; lymph nodes, 2; liver, 1; and bone, 1), comprising 6 of 18 from protocol 1 and 3 of 13 from protocol 2. The median response duration was 89 days (range 91-540). No clinical parameter could be identified which was predictive for response. The subjective toxicity (flu-like symptoms and muscle pain) was considerable and necessitated dose reduction in 19 patients from protocol 1. The dose schedule of protocol 2 was tolerated better even after slight dose escalation. The considerable interpatient variation in toxicity, however, made any demonstration of a clear dose-toxicity relationship impossible. High dose interferon treatment of metastatic renal cell carcinoma combined with vinblastine results in a 33% response rate (95% confidence interval: 11-55%).(ABSTRACT TRUNCATED AT 250 WORDS)
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