• Breast · Apr 2017

    Efficacy and safety of eribulin as first- to third-line treatment in patients with advanced or metastatic breast cancer previously treated with anthracyclines and taxanes.

    • Shigeto Maeda, Michiyo Saimura, Shigeki Minami, Kaname Kurashita, Reiki Nishimura, Yuichiro Kai, Hiroshi Yano, Kohjiro Mashino, Shoshu Mitsuyama, Mototsugu Shimokawa, Kazuo Tamura, and Kyushu Breast Cancer Study Group.
    • Department of Surgery, National Hospital Organization Nagasaki Medical Center, Omura, Nagasaki, Japan. Electronic address: maedash@nagasaki-mc.com.
    • Breast. 2017 Apr 1; 32: 66-72.

    ObjectivesDespite the survival benefit and acceptable tolerability of eribulin for advanced/metastatic breast cancer (MBC) patients pretreated with anthracyclines and taxanes, there is limited evidence of the clinical benefit of early eribulin use. We investigated the efficacy and safety of first- to third-line eribulin use in patients with MBC.Materials And MethodsIn this phase II, open-label, single-arm study conducted at 14 sites in Kyushu, Japan, women with histologically confirmed human epidermal growth factor receptor 2-negative MBC were enrolled between December 1, 2011 and November 30, 2013 (Data cut-off: November 30, 2014). Objective response rate (ORR; primary endpoint), disease control rate (DCR), progression-free survival (PFS), duration of response (DOR), overall survival (OS), and safety were evaluated.ResultsOf 53 recruited patients, 47 were enrolled. The ORR was 17.0% (95% confidence interval, 7.6-30.8), DCR was 66.0% (51.2-77.8), median PFS was 4.9 months (3.5-7.0), DOR was 6.6 months (1.9-14.3), and median OS was 17.4 months (10.1-not evaluable). The common grade 3/4 adverse events were neutropenia (25 patients; 53.2%), leucopenia (16 patients; 42.1%) and febrile neutropenia (4 patients; 8.5%). Toxicity did not increase during the long-term treatment. Subgroup analysis indicated that first-line treatment led to higher ORR and prolonged PFS and OS than second-/third-line treatment and that incidence of adverse events in patients of second-/third-line treatment was not higher than that in patients of first-line treatment.ConclusionEribulin exhibited efficacy and manageable tolerability in Japanese women with pretreated MBC in first- to third-line use. (ID: UMIN000007121).Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.

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