A phase I pharmacokinetic study of 21-day continuous infusion mitoxantrone.
1989
A phase I study of mitoxantrone given as a continuous infusion for 21 days using a venous access port and a portable pump was performed. The first dose step was 0.3 mg/m2/d for 21 days. Courses were repeated every 6 weeks. Dose increment per step was 0.1 mg/m2/d in the first three dose steps and 0.2 mg/m2/d in the latter dose steps. Twenty-five patients entered the study and received a total of 50 courses, with a median of two courses (range, one to five). Up to 0.5 mg/m2/d, no toxicity (according to the World Health Organization [WHO] criteria) occurred. At 0.7 mg/m2/d, one patient experienced grade 2 leukocytopenia and at the 0.9 mg/m2/d dose step, one patient experienced grade 2 leukocytopenia, grade 1 thrombocytopenia, and grade 1 hair loss. At 1.1 mg/m2/d, two of six patients had grade 3 leukocytopenia, and in one patient treatment was discontinued after two days because of myocardial infarction. In both patients receiving 1.3 mg/m2/d, treatment was discontinued after 2 weeks because of grade 3 leuko...
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