4.5 Article

The Efficacy and Toxicity of Neoadjuvant Chemotherapy Regimens of Epirubicin Plus Cyclophosphamide Followed by Docetaxel or Paclitaxel in Female Breast Cancer Patients

期刊

CANCER MANAGEMENT AND RESEARCH
卷 13, 期 -, 页码 1517-1527

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DOVE MEDICAL PRESS LTD
DOI: 10.2147/CMAR.S284638

关键词

neoadjuvant chemotherapy; pathological complete response; EC-D; EC-P; toxicity of anticancer drugs

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资金

  1. National Natural Science Foundation of China [81572602]

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This study retrospectively analyzed the efficacy and toxicity of epirubicin plus cyclophosphamide followed by docetaxel (EC-D) and epirubicin plus cyclophosphamide followed by paclitaxel (EC-P) as neoadjuvant chemotherapy regimens. The results showed that the rate of pathological complete response (pCR) was higher in EC-P compared to EC-D. Patients with ER (-), PR (-), Her-2 (+), and high Ki-67 index were more likely to achieve pCR with EC-P.
Purpose: To retrospectively analyze the efficacy and toxicity of epirubicin plus cyclophosphamide followed by docetaxel (EC-D) and epirubicin plus cyclophosphamide followed by paclitaxel (EC-P) efficacy as neoadjuvant chemotherapy regiments by pathological complete response (pCR) in this study. Methods: In total, 455 patients diagnosed with breast cancer who received NAC from January 2014 to January 2019 were enrolled. Of which, 109 patients received EC-D (E: 90, C: 600, D: 80, all in mg/m2) and 346 were treated with EC-P (E: 90, C: 600, D: 175, all in mg/m2). Efficacy of NAC regimens was evaluated by pCR, and the toxicity was studied. Chi-squared test was used at p=0.05. Results: In EC-D, 11 patients received ypT(0/is)N(0), and 6 of them got ypT(0)N(0). Analogously, 67 patients receiving received EC-P obtained ypT(0)/N-is(0), and 43 people of them acquired ypT(0)N(0). The rate of pCR in EC-P was higher than EC-D. Patients with ER (-), PR (-), Her-2 (+) and high Ki-67 index were easier to were more likely to acquire pCR. Two pCRs were described, the pCR of NAC differed according to the definition. In terms of side effects, there was no significant difference in platelet and urea, but the decrease of hemoglobin and creatinine levels after EC-P treatment was more significant than that after EC-D treatment. Conclusion: The efficacy of EC-P is better than EC-D if pCR is to be determined as a surrogate end-point for prognosis. The patients with anemia or renal insufficiency who need to receive NAC should choose EC-D.

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