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Published in: Breast Cancer Research and Treatment 1/2013

Open Access 01-11-2013 | Clinical Trial

Randomized trial of preoperative docetaxel with or without capecitabine after 4 cycles of 5-fluorouracil–epirubicin–cyclophosphamide (FEC) in early-stage breast cancer: exploratory analyses identify Ki67 as a predictive biomarker for response to neoadjuvant chemotherapy

Authors: S. Ohno, L. W. C. Chow, N. Sato, N. Masuda, H. Sasano, F. Takahashi, H. Bando, H. Iwata, T. Morimoto, S. Kamigaki, T. Nakayama, S. Nakamura, K. Kuroi, K. Aogi, M. Kashiwaba, H. Yamashita, K. Hisamatsu, Y. Ito, Y. Yamamoto, T. Ueno, E. Fakhrejahani, N. Yoshida, M. Toi

Published in: Breast Cancer Research and Treatment | Issue 1/2013

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Abstract

This randomized, multicenter study compared the efficacy of docetaxel with or without capecitabine following fluorouracil/epirubicin/cyclophosphamide (FEC) therapy in operable breast cancer and investigated the role of Ki67 as a predictive biomarker. Patients were randomized to 4 cycles of docetaxel/capecitabine (docetaxel: 75 mg/m2 on day 1; capecitabine: 1,650 mg/m2 on days 1–14 every 3 weeks) or docetaxel alone (75 mg/m2 on day 1 every 3 weeks) after completion of 4 cycles of FEC (5-fluorouracil 500 mg/m2, epirubicin 100 mg/m2 and cyclophosphamide 500 mg/m2 on day 1 every 3 weeks). The primary endpoint was the pathological complete response (pCR) rate. Predictive factor analysis was conducted using clinicopathological markers, including hormone receptors and Ki67 labeling index (Ki67LI). A total of 477 patients were randomized; the overall response in the docetaxel/capecitabine and docetaxel groups was 88.3 and 87.4 %, respectively. There were no significant differences in the pCR rate (docetaxel/capecitabine: 23 %; docetaxel: 24 %; p = 0.748), disease-free survival, or overall survival. However, patients with mid-range Ki67LI (10–20 %) showed a trend towards improved pCR rate with docetaxel/capecitabine compared to docetaxel alone. Furthermore, multivariate logistic regression analysis showed pre-treatment Ki67LI (odds ratio 1.031; 95 % CI 1.014–1.048; p = 0.0004) to be a significant predictor of pCR in this neoadjuvant treatment setting. Docetaxel/capecitabine (after 4 cycles of FEC) did not generate significant improvement in pCR compared to docetaxel alone. However, exploratory analyses suggested that assessment of pre-treatment Ki67LI may be a useful tool in the identification of responders to preoperative docetaxel/capecitabine in early-stage breast cancer.
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Metadata
Title
Randomized trial of preoperative docetaxel with or without capecitabine after 4 cycles of 5-fluorouracil–epirubicin–cyclophosphamide (FEC) in early-stage breast cancer: exploratory analyses identify Ki67 as a predictive biomarker for response to neoadjuvant chemotherapy
Authors
S. Ohno
L. W. C. Chow
N. Sato
N. Masuda
H. Sasano
F. Takahashi
H. Bando
H. Iwata
T. Morimoto
S. Kamigaki
T. Nakayama
S. Nakamura
K. Kuroi
K. Aogi
M. Kashiwaba
H. Yamashita
K. Hisamatsu
Y. Ito
Y. Yamamoto
T. Ueno
E. Fakhrejahani
N. Yoshida
M. Toi
Publication date
01-11-2013
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 1/2013
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-013-2691-y

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