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Phase I study of docetaxel plus ifosfamide in patients with advanced cancer

By G Marx, C Lewis, K Hall, J Levi and S Ackland


The aim of this study was to determine the maximum tolerated dose of a fixed dose of docetaxel when combined with continuous infusion ifosfamide, with and without G-CSF support, in the treatment of advanced cancer, and to evaluate anti-tumour activity of this combination. Thirty-one patients with advanced malignancies were treated with docetaxel 75 mg/m2 intravenously on days 1, and ifosfamide at increasing dose levels from 1500 mg/m2/day to 2750 mg/m2/day as a continuous infusion from day 1–3, every 3 weeks. A total of 107 cycles of treatment were administered. Without G-CSF support dose-limiting toxicity of grade 4 neutropenia greater than 5 days duration occurred at dose level 1. With the addition of G-CSF the maximum tolerated dose was docetaxel 75 mg/m2 on day 1 and ifosfamide 2750 mg/m2/day on days 1–3. Dose limiting toxicity (DLT) included ifosfamide-induced encephalopathy, febrile neutropenia and grade three mucositis. Three complete responses and 3 partial responses were seen. This combination of docetaxel and infusional ifosfamide is feasible and effective. The recommended dose for future phase II studies is docetaxel 75 mg/m2 on day 1 and ifosfamide 2500 mg/m2/day continuous infusion on days 1–3

Topics: Clinical
Publisher: Nature Publishing Group
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Provided by: PubMed Central

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