Annals of Oncology 5:343-347, 1994
© 1994 European Society for Medical Oncology
research-article |
Phase I/II study of intraperitoneal mitoxantrone in refractory ovarian cancer
1Antoni van Leeuwenhoel Ziekenhuis, Netherlands Cancer Institute Amsterdam, The Netherlands
2Department of Medicine, Princess Margaret Hospital Toronto, Canada
3CRC Cancer Research Campaign London, U.K.
Correspondence to: Dr. W. ten Bokkel Huinink, Antoni van Leeuwenhoek Ziekenhuis, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
BACKGROUND:: Mitoxantrone has demonstrable clinical activity when administered intravenously in a wide range of malignancies. The feasibility and toxicity of intra-peritoneal administration was established in a phase I study. The optimal dose from the phase I was subsequently evaluated in a phase II study.
PATIENTS AND METHODS:: 19 patients with refractory malignancies and extensive abdominal disease (13 ovarian cancer, 4 breast cancer, 2 mesothelioma) were entered in a phase I study. The dose of intraperitoneal mitoxantrone was escalated from 10 mg/m2, administered in 21 of fluid via a Tenkhoff catheter, to 55 mg/m2, in increments of 5 mg/m2. Cycles were repeated every three weeks. Sixty-seven cycles of mitoxantrone were administered, the maximum tolerable dose being 25 mg/m2. A phase II study at this dose was conducted in 14 patients with refractory ovarian cancer, all of whom had previously received systemic platinum based therapy. Five of the 14 had also previously been treated with intraperitoneal carboplatin. Fifty-one cycles were administered.
RESULTS:: The dose limiting toxicity in the phase I study was peritoneal irritation and pain. Leucopenia was frequent at doses equal or greater than 30 mg/m2. Three complete remissions were documented in the phase I study (2 breast cancer and 1 ovarian cancer). There was no significant haematological toxicity in the phase II assessment, though local toxicity precluded further therapy in 2 patients. No objective responses were seen in the phase II evaluation.
CONCLUSIONS:: These studies demonstrate the feasibility of intra-peritoneal mitoxantrone therapy in patients with peritoneal disease, but do not support its routine use in ovarian cancer.
ovarian cancer, mitoxantrone, intraperitoneal therapy, phase I, phase II