Trial of Eribulin in Patients Who Do Not Achieve Pathologic Complete Response (pCR) Following Neoadjuvant Chemotherapy

This is a non-randomized, open-label trial to evaluate 6 cycles of eribulin in female patients with invasive breast cancer who do not achieve pathologic complete response (pCR) after treatment with a standard neoadjuvant chemotherapy and surgery regimen. Patients will be randomized into three cohorts according to tumor-type: triple-negative (Cohort A), hormone-receptor-positive/HER2-negative (Cohort B), and HER2-positive (Cohort C) tumors. Patients will receive eribulin for 6 cycles (1 cycle = 21 days). Patients with HER2-positive tumors will also receive trastuzumab. Patients in all cohorts will be allowed to receive locoregional radiotherapy and/or adjuvant hormonal therapy per institutional guidelines.