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Article

Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy

  • Authors:
    • Ying-Chun Zhao
    • Yan Wang
    • Xiao-Jian Ni
    • Yong Li
    • Xiu‑Ming Wang
    • Yong-Yun Zhu
    • Chuan-Yu Luo
  • View Affiliations / Copyright

    Affiliations: Department of Breast Surgery, The Second People's Hospital of Wuhu Affiliated with Wannan Medical College, Wuhu, Anhui 241000, P.R. China, Department of Plastic Surgery, Yijishan Hospital Affiliated with Wannan Medical College, Wuhu, Anhui 241000, P.R. China, Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China, Department of Pathology, The Second People's Hospital of Wuhu Affiliated with Wannan Medical College, Wuhu, Anhui 241000, P.R. China
  • Pages: 614-620
    |
    Published online on: December 4, 2013
       https://doi.org/10.3892/mmr.2013.1842
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Abstract

The second mitochondria‑derived activator of caspases (Smac), an antagonist of the inhibitor of apoptosis protein (IAP), increases chemosensitivity in vitro. Survivin, an IAP family member, mediates cancer cell survival and chemoresistance. The present study investigated the correlation between Smac and survivin expression in primary breast cancer, and the sensitivity to anthracycline during neoadjuvant chemotherapy (NAC). Pre‑treatment biopsies and post‑anthracycline treatment tumor sections were analyzed from 98 cases. Biomarker expression was evaluated by immunohistochemistry in tumor samples from clinical stage II and III anthracycline‑based NAC‑treated breast cancer. A univariate analysis indicated that the estrogen receptor (ER), Smac and survivin were significantly predictive of a pathological complete response (pCR) (P=0.004, 0.001 and 0.037, respectively) in pre‑chemotherapy samples. ER, Smac and survivin expression was also significant for pCR on the multivariate analysis (P=0.001, 0.031 and 0.012, respectively). An inverse association was identified between survivin and Smac expression (r=‑0.217, P=0.032; and r=‑0.335, P=0.003, respectively) prior to and following NAC. The patients with low survivin expression or high Smac expression had significantly longer disease‑free survival (DFS; P=0.012 and P=0.020, respectively) and overall survival (OS; P=0.01 and P=0.033, respectively) compared with the patients with high survivin or low Smac expression. Cox regression analyses demonstrated that survivin, Smac and clinical stage were independent predictors for DFS and OS. The present study indicated the significance of Smac and survivin in determining the breast cancer response to anthracycline‑based chemotherapy, and may permit further stratifying of pre‑chemotherapy patients to undertake more tailored treatments.
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Copy and paste a formatted citation
Spandidos Publications style
Zhao Y, Wang Y, Ni X, Li Y, Wang XM, Zhu Y and Luo C: Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy. Mol Med Rep 9: 614-620, 2014.
APA
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., & Luo, C. (2014). Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy. Molecular Medicine Reports, 9, 614-620. https://doi.org/10.3892/mmr.2013.1842
MLA
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., Luo, C."Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy". Molecular Medicine Reports 9.2 (2014): 614-620.
Chicago
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., Luo, C."Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy". Molecular Medicine Reports 9, no. 2 (2014): 614-620. https://doi.org/10.3892/mmr.2013.1842
Copy and paste a formatted citation
x
Spandidos Publications style
Zhao Y, Wang Y, Ni X, Li Y, Wang XM, Zhu Y and Luo C: Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy. Mol Med Rep 9: 614-620, 2014.
APA
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., & Luo, C. (2014). Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy. Molecular Medicine Reports, 9, 614-620. https://doi.org/10.3892/mmr.2013.1842
MLA
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., Luo, C."Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy". Molecular Medicine Reports 9.2 (2014): 614-620.
Chicago
Zhao, Y., Wang, Y., Ni, X., Li, Y., Wang, X., Zhu, Y., Luo, C."Clinical significance of Smac and survivin expression in breast cancer patients treated with anthracycline‑based neoadjuvant chemotherapy". Molecular Medicine Reports 9, no. 2 (2014): 614-620. https://doi.org/10.3892/mmr.2013.1842
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