Annals of Oncology 14:1406-1411, 2003
© 2003 European Society for Medical Oncology
Original Paper |
An escalating dose finding study of liposomal doxorubicin and vinorelbine for the treatment of refractory or resistant epithelial ovarian cancer
1 Divisione di Oncologia Medica B and 2 Divisione di Ginecologia Oncologica, Istituto Nazionale Tumori, Napoli; 3 Divisione di Oncologia Medica, Osp. S. Carlo-Potenza, Italy
Received 15 January 2003; revised 17 March 2003; accepted 28 April 2003
Background:
The aim of this study was to determine the maximum tolerated dose (MTD) of liposomal doxorubicin (LD)vinorelbine (V) in patients with refractory or resistant ovarian cancer.
Patients and methods:
Thirty patients were eligible. Seven levels were studied [LD 25V20 (three patients enrolled); LD 30V20 (three); LD 35V20 (three); LD 20V25 (three); LD 25V25 (three); LD 30V25 (10); LD 35V25 (five)]. LD was given on day 1, while V was given on days 1 and 8 every 21 days. Cohorts of three patients were enrolled at each level, and another three patients were planned, if one dose-limiting toxicity (DLT) was registered.
Results:
DLT was observed in four patients: two febrile neutropenia, one grade 4 thrombocytopenia and one grade 3 palmar-plantar erythrodysesthesia (PPE) at level 7 (LD 35V25). Thus, liposomal doxorubicin 30 mg/m2 plus vinorelbine 25 mg/m2 was the MTD. The most frequent toxicity was neutropenia. Fifteen patients (50%) experienced grade 3 neutropenia and 10 (33.3%) grade 4 neutropenia. Non-hematological toxicity was mild. Mucositis and PPE were the most frequent toxicities, but in most cases were grade 1. Out of 29 assessable patients, six (20.7%; 95% confidence interval 10%39%) experienced an objective response, with one complete response.
Conclusions:
In patients with refractory or resistant ovarian cancer, the recommended doses for the combination studied are liposomal doxorubicin 30 mg/m2 (day 1) plus vinorelbine 25 mg/m2 (day 1 and 8). Neutropenia is the most frequent toxicity, while non-hematological toxicity is mild. Substantial activity was recorded and a phase II study is justified.
Key words: liposomal doxorubicin, ovarian cancer, phase I, vinorelbine
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