An international research team, led by Dartmouth's Peter A. Kaufman, MD, published findings in the Journal of Clinical Oncologydemonstrating that, while not superior to capecitabine, eribulin is an active and well-tolerated therapy in women with metastatic breast cancer (MBC) receiving this therapy as a first, second, or third line chemotherapy regimen. Additionally, these patients had all been previously treated with both an anthracycline and a taxane in either the adjuvant or metastatic setting. This study is the first to address the use of eribulin early in the course of metastatic breast cancer, specifically either the first or second line setting
"Additionally, it is of great interest that subset analysis suggests that eribulin may be particularly active and effective in triple negative MBC, which is known to be an aggressive subset of breast cancer, and one associated unfortunately with a particularly poor prognosis overall," said Kaufman.
Eribulin has been approved in numerous countries in the third line or latter setting for the treatment of MBC, and is increasingly widely used. It is the only chemotherapeutic agent shown to have a survival benefit for patients with MBC in the third line or latter chemotherapeutic setting. Given previous research findings, and now findings from this large international trial, there has been great interest from oncologists and other clinicians in the potential impact that eribulin might have earlier in the course of MBC.
This phase III randomized trial assigned 1,099 women who had previously been treated with an anthracycline or a taxane to either eribulin or capecitabine as their first, second, or third line chemotherapy for advanced MBC. Stratification factors were human epidermal growth factor receptor-2 (HER2) status and geographic region. Coprimary endpoints were overall survival and progression-free survival.
"While there is not a statistically significant difference in overall survival with eribulin in comparison to capecitabine, the median overall survival seen with eribulin is in fact numerically slightly superior to that of capecitabine," explained Kaufman.
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