Abstract
Background: KW-2189 is a semi-synthetic, water-soluble analog of duocarmycin B2, a new class of potent antitumor antibiotics produced by streptomyces, with improved in vitro antitumor potency. Patients and methods: Forty patients with pathologically confirmed metastatic renal cell carcinoma were treated in this multicenter, open-label phase II trial. All patients received 0.4mg/m2 KW-2189 as an IV infusion for Cycle 1. Cycles were repeated every 5 to 6 weeks with escalations to 0.5 mg/m2 in the absence of significant toxicity or disease progression. Results:No patient had an objective response. The most common drug-related toxicity was hematological-delayed neutropenia and thrombocytopenia, with recovery by week 6. Non-hematologic toxicity consisted of mild to moderate fatigue, nausea and vomiting, and anorexia that was generally manageable. Conclusions: KW-2189 in this dose and schedule has a predictable safety profile of reversible myelosuppression. No activity in metastatic renal cell carcinoma was demonstrated.
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Small, E.J., Figlin, R., Petrylak, D. et al. A Phase II Pilot Study of KW-2189 in Patients with Advanced Renal Cell Carcinoma. Invest New Drugs 18, 193–198 (2000). https://doi.org/10.1023/A:1006386115312
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DOI: https://doi.org/10.1023/A:1006386115312