Unfavorable Pathological Complete Response Rate of Neoadjuvant Chemotherapy Epirubicin plus Taxanes

来源 :Journal of Huazhong University of Science and Technology(Med | 被引量 : 0次 | 上传用户:duidui1314
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Anthracycline-Taxane chemotherapy is widely used in neoadjuvant treatment for breast cancers. However, there is limited data reported in patients with triple negative breast cancer (TNBC). Here, we evaluated the pathologic responses and survival of neoadjuvant epirubicin and taxanes chemotherapy in patients with locally advanced TNBC to provide some useful information for clinical practice. A total of 43 patients with locally advanced TNBC were enrolled in this study. Patients were administered with epirubicin 75 mg/m 2 plus paclitaxel 175 mg/m 2 or docetaxel 75 mg/m 2 every 3 weeks for at least 2 cycles. The primary endpoint was pathologic complete response (pCR), which was defined as no residual invasive cancer, or only carcinoma in situ in both the excised breast and axillary lymph node, while relapse-free survival (RFS) and overall survival (OS) were secondary endpoints. Thirty-nine (90.7%) patients were at clinical stages ⅡB-ⅢC. Thirty-seven (86%) completed 4-6 cycles of preoperative chemotherapy, and objective response rate (ORR) was 81.4% (35/43). Forty-two patients underwent radical surgery subsequently. The pCR rate was 14.3% (6/42). The most common adverse events in neoadjuvant chemotherapy were nausea/vomiting (88.4%, 38/43) and neutropenia (88.4%). After a median follow-up period of 34.0 months, 3-year RFS and OS rate was 53.6% and 80.1%, respectively. All events of recurrence and death occurred in non-pCR patients, in whom the 3-year RFS and OS rates were 44.3% and 76.6%, respectively. This study suggest that neoadjuvant chemotherapy with epirubicin plus taxanes has a relatively low pCR rate and high early recurrence risk in locally advanced TNBC, which indicates the necessity for more efficacious treatment. Further study is needed to validate these results. However, there is limited data reported in patients with triple negative breast cancer (TNBC). Here, we evaluated the pathologic responses and survival of neoadjuvant epirubicin and taxanes chemotherapy in patients with locally advanced TNBC to provide some useful information for clinical practice. A total of 43 patients with locally advanced TNBC were enrolled in this study. Patients were administered with epirubicin 75 mg / m 2 plus paclitaxel 175 mg / m 2 or docetaxel 75 mg / m 2 every 3 weeks for at least 2 cycles. The primary endpoint was pathologic complete response (pCR), which was defined as no residual invasive cancer, or only carcinoma in situ in both the excised breast and axillary lymph node, while relapse-free survival Thirty-nine (90.7%) patients were at clinical stages ⅡB-ⅢC. Thirty-seven (86%) completed 4-6 cycles of preop The most common adverse events in neoadjuvant chemotherapy were nausea (ORR) was 81.4% (35/43). The pCR rate was 14.3% (6/42). The most common adverse events in neoadjuvant chemotherapy were nausea After a median follow-up period of 34.0 months, 3-year RFS and OS rate was 53.6% and 80.1%, respectively. All events of recurrence and death (88.4%, 38/43) and neutropenia occurred in non-pCR patients, in the 3-year RFS and OS rates were 44.3% and 76.6% respectively. This study suggest that neoadjuvant chemotherapy with epirubicin plus taxanes has a relatively low pCR rate and high early recurrence risk in locally advanced TNBC, which indicates the necessity for more efficacious treatment. Further study is needed to validate these results.
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