Vinfunine (VFL) is a novel bifluorinated tubulin-targeted agent of the vinca alkaloids class active in advanced stage breast cancer. We conducted a phase I study combining VFL with doxorubicin (DXR) to define the recommended dose (RD), safety, pharmacokinetic (PK) interaction and efficacy. Two schedules (day 1 every 3 weeks; days 1 and 8 every 3 weeks) were investigated as first line chemotherapy in metastatic breast cancer patients. Thirty-two patients received a total of 162 cycles of the VFL-DXR combination (median 6). The RDs were VFL 250 mg/m(2)/DXR 40 mg/m(2) every 3 weeks for schedule 1 and VFL 120 mg/m(2)/DXR 25 mg/m(2) days 1 and 8 every 3 weeks for schedule 2. The main dose-limiting toxicity was neutropenia. The most frequent non-hematological adverse events were nausea, fatigue, constipation, vomiting, anorexia, stomatitis and dyspnea. Objective response rate was reached in 47.1% of the patients. No PK interaction was observed. VFL-DXR combination is feasible with manageable toxicity. The antitumor activity was promising and supports further evaluation.
Zaman, K., Durando, X., Baurain, J.-F., Humblet, Y., Mazzeo, F., Bostnavaron, M., Meheust, N., Monnoyer-Favrel, S., Machiels, J.-P., & Bauer, J. (2011). A phase I clinical and pharmacological study evaluating vinflunine in combination with doxorubicin as first line treatment in metastatic breast cancer. Breast Cancer Research and Treatment, 127(3), 689-696. https://doi.org/10.1007/s10549-011-1446-x (Original work published 2011)