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A Randomized Controlled Phase 2 Study of Neoadjuvant Eribulin Versus Paclitaxel in Women with Operable Breast Cancer:
Kazutaka Narui1, Daishu Miura2, Yoshie Hasegawa3
1Department of Breast and Thyroid Surgery, Yokohama City University Medical Center, Yokohama, Japan.
Objective:
Neoadjuvant chemotherapy (NAC) is essential for surgical downstaging of early-stage breast cancer, but taxane administration is associated with neuropathy. We investigated whether eribulin induces less neuropathy than paclitaxel.
Methods:
In this multicentre, randomised study (UMIN000012817), patients diagnosed with invasive breast cancer between December 2013 and April 2016 were randomly assigned to group E (eribulin followed by fluorouracil, epirubicin, and cyclophosphamide; FEC) or group P (paclitaxel followed by FEC). The primary endpoint was incidence of grade 1 or higher peripheral neuropathy according to the Common Terminology Criteria for Adverse Events (CTCAE). Secondary endpoints were pathological complete response (pCR), clinical response, breast-conserving surgery, adverse events, disease-free survival (DFS), and patient neurotoxicity questionnaire (PNQ) analysis.
Results:
One hundred and eighteen cases were analyzed for safety and 115 were evaluated for efficacy. Peripheral sensory neuropathy was significantly lower in group E after week 6, while peripheral motor neuropathy in group E was significantly lower at weeks 9, 12, and 15. pCR in groups E and P was 20.7% and 29.8% (P = .289), respectively, and clinical response was 55.2% and 77.2% (P = .017), respectively. Three-year DFS was 89.7% in group E and 86.0% in group P (P = .561). Neutropenia was more frequent and more severe in group E. PNQ was evaluated for 4 years, and item 1 (sensory) was consistently lower in group E.
Conclusion:
Neuropathy was significantly less frequent and less severe in patients who received eribulin compared with paclitaxel. Thus, eribulin could be a good alternative to paclitaxel in patients suffering severe neuropathy.
