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  • Title: Granulocyte-macrophage-colony stimulating factor in combination immunotherapy for patients with metastatic renal cell carcinoma: results of two phase II clinical trials.
    Author: Ryan CW, Vogelzang NJ, Dumas MC, Kuzel T, Stadler WM.
    Journal: Cancer; 2000 Mar 15; 88(6):1317-24. PubMed ID: 10717612.
    Abstract:
    BACKGROUND: The aim of this study was to determine the response rates and toxicity of two regimens containing granulocyte-macrophage-colony stimulating factor (GM-CSF) in combination with interleukin-2 (IL-2) in the treatment of patients with metastatic renal cell carcinoma. METHODS: Therapy given in the first trial (Trial 1) consisted of irradiation to the primary tumor or metastatic site, followed by GM-CSF 100 microg/day administered subcutaneously (sc) for 2 weeks and IL-2 11x10(6) IU sc 4 days per week for 4 weeks. In the second trial (Trial 2), the therapy consisted of GM-CSF 125 microg/day sc for 2 weeks, followed by IL-2 11x10(6) IU sc 4 days per week and interferon-alpha 10x10(6) IU sc 2 days per week for 4 weeks, plus oral 13-cis-retinoic acid 1 mg/kg daily for 4 weeks. RESULTS: There were no responses among 20 patients in Trial 1, but 3 patients had stable disease. There was 1 partial responder (5%) of 20 evaluable patients in Trial 2 who achieved a complete response with surgical resection. An additional 3 patients maintained stable disease, 2 of whom were rendered disease free by resection of the renal primary and a single metastatic site. The 1-year survival rate was 75% (95% confidence interval [CI], 50-89) in Trial 1 and 48% (95% CI, 20-71) in Trial 2. In Trial 1, Grade 3 toxicities included fever, fatigue, anorexia, nausea/vomiting, hyperbilirubinemia, and mental status change. Toxicity was more frequent in Trial 2 and included Grade 3 fever, fatigue, anorexia, mucositis, and dermatitis. One on-study death may have been therapy-related. CONCLUSIONS: GM-CSF does not enhance the low response rate of IL-2-based immunotherapy for patients with metastatic renal cell carcinoma. New active agents are needed to treat patients with this disease.
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