Effectiveness, safety, and impact on quality of life of eribulin-based therapy in heavily pretreated patients with metastatic breast cancer: A real-world analysis.

INTRODUCTION

Eribulin is currently recommended for the treatment of patients with metastatic breast cancer (MBC) pre-treated with taxanes and anthracyclines. The aim of the present study was to evaluate the effectiveness and safety of eribulin and its impact on health-related quality of life in heavily pre-treated patients with MBC.

METHODS

Data from MBC patients who had received eribulin-based therapy at Beijing Cancer Hospital between January 2020 and July 2022 were analyzed retrospectively. Progression-free survival (PFS), overall survival (OS), objective response rate (ORR), disease control rate (DCR), adverse effects (AEs) and health-related quality of life (HRQoL) were assessed.

RESULTS

Data from 118 patients who had received eribulin to treat MBC were included. Median PFS was 4.2 months and median OS had not been reached. The ORR was 13.6% (16/118) and DCR was 75.4% (89/118). The median PFS in patients who received eribulin in second-line (26/118), third-line (29/118), or fourth-line or later (63/118) was 4.5, 4.2, and 3.9 months, respectively. The median OS in patients who received eribulin in third- or later line (n = 92) was 14.1 months. Patients who received eribulin combination therapy had a significantly longer median PFS compared with those who received eribulin monotherapy (4.5 vs. 3.4 months, p = 0.007) and there was a trend towards a longer median OS (not reached vs. 12.1 months). The most common grade 3-4 adverse events were neutropenia (22.9%), leukocytopenia (13.6%) and asthenia/fatigue (8.5%), without significant differences in safety between eribulin monotherapy and combination therapy. Quality of life was similar in patients who received eribulin monotherapy and combination therapy, except for cognitive function and nausea and vomiting symptoms, which were better with combination therapy.

CONCLUSIONS

The present study suggests that eribulin-based therapy is an effective treatment option and well tolerated for heavily pre-treated patients with MBC. Eribulin combination therapy might improve PFS and HRQoL compared with eribulin monotherapy.