Phase I study of vinorelbine and paclitaxel in small-cell lung cancer

Cancer Chemotherapy and Pharmacology
R V IaffaioliP Muto

Abstract

Vinorelbine and paclitaxel interfere with mitotic spindle function through different mechanisms of action. Both of the drugs show antitumor activity in small-cell lung cancer when used as single agents; furthermore, in vitro and in vivo studies have shown a synergistic activity between the two drugs. Patients with small-cell lung cancer no longer amenable to conventional treatment were entered into a phase I study in which vinorelbine was given at a fixed dose of 30 mg/m2 by 15-min intravenous infusion, whereas paclitaxel was given by 3-h infusion starting 1 h after vinorelbine at an initial dose of 90 mg/m2, which was subsequently escalated by 30-mg/m2 steps. Cycles were repeated every 21 days. Grade 3 neutropenia was observed only in three patients treated at the fifty dose level. Thrombocytopenia never reached grade 3. Neurotoxicity was considered dose-limiting, since grade 3 peripheral neuropathy occurred in three of five patients treated at the fifth dose level (paclitaxel 210 mg/m2). Other side effects were generally mild. The overall response rate in 22 evaluable patients was 32% (95% CI 13-51%); in particular, 1 complete response (4.5%) and 6 partial responses (27.3%) were observed. The maximally tolerated doses recomme...Continue Reading

Citations

Mar 16, 2001·Expert Opinion on Pharmacotherapy·I Sekine, N Saijo
Dec 7, 2000·Cancer Investigation·D R BudmanW Kreis

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