Abstract
Background: Rubitecan (9-nitrocamptothecin, 9-NC, Orathecin™) and gemcitabine have single-agent activity in pancreatic and ovarian carcinoma. We conducted a phase I trial to evaluate the maximum tolerated dose (MTD) and toxicities of this combination in advanced malignancies. Patients and methods: Twenty-one patients with refractory or recurrent malignancies were enrolled in this dose escalation trial. Dose escalation proceeded from a starting level of rubitecan at 0.75 mg/m2/day administered orally on days 1-5 and 8-12 in combination with gemcitabine Results: The MTD was defined as rubitecan 1 mg/m2 administered orally days 1-5 and 8-12, and gemcitabine 1000 mg/m2 administered intravenously over 30 min days 1 and 8, given every 21 days. Dose-limiting toxicity was myelosuppression including neutropenia and thrombocytopenia. Other side effects included diarrhea, nausea, vomiting and fatigue. Five patients with stable disease were observed among 18 evaluable patients. Conclusions: The recommended phase II dose is rubitecan 1 mg/m2 given orally on days 1-5 and 8-12 in combination with gemcitabine 1000 mg/m2 as a 30-min intravenous infusion on days 1 and 8 of a 21-day cycle.
Original language | English |
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Pages (from-to) | 1819-1825 |
Number of pages | 7 |
Journal | Annals of Oncology |
Volume | 13 |
Issue number | 11 |
DOIs | |
State | Published - Nov 1 2002 |
Keywords
- 9-Nitrocamptothecin
- Gemcitabine
- Gemzar®
- Orethecin™
- Phase I
- Rubitecan