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Clinical efficacy and safety of T-DM1 for patients with HER2-positive breast cancer

Authors Ma B, Ma Q, Wang H, Zhang G, Zhang H, Wang X

Received 13 November 2015

Accepted for publication 20 January 2016

Published 29 February 2016 Volume 2016:9 Pages 959—976

DOI https://doi.org/10.2147/OTT.S100499

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Manfred Beleut

Peer reviewer comments 2

Editor who approved publication: Professor Daniele Santini


Bo Ma,1 Qianqian Ma,2 Hongqiang Wang,3 Guolei Zhang,1 Huiying Zhang,1 Xiaohong Wang1

1Affiliated Central Hospital of Huzhou Teachers College, Huzhou, Zhejiang, People’s Republic of China; 2University Hospital of Tuebingen, Tuebingen, Germany; 3Department of Oncology, Hospital of Zhoushan, Zhoushan, Zhejiang, People’s Republic of China

Purpose: The aim of this study was to evaluate the therapeutic efficacy and safety of trastuzumab emtansine (T-DM1) for the treatment of patients with human epidermal growth factor receptor 2-positive breast cancer. 
Methods: We performed a systemic review and meta-analysis of the relevant published clinical studies. A computerized search was performed for controlled clinical trials of T-DM1 in targeted treatment. Overall survival, progression-free survival, objective response rate, symptom progression free, and adverse events (AEs) were evaluated. 
Results: Eight eligible trials with a total of 2,016 patients with breast cancer were included in the present meta-analysis. The treatment of patients with breast cancer with T-DM1 was associated with significantly increased overall and progression-free survival when compared with controls (P<0.0001). An analysis of the objective response rate and symptom progression free also demonstrated favorable results for T-DM1 treatment (P≤0.0001). There was no significant difference between the T-DM1 and control groups with respect to nonhematologic or hematologic AEs (P=0.99 and P=0.30, respectively). 
Conclusion: Overall, T-DM1 is efficacious in the treatment of patients with human epidermal growth factor receptor 2-positive breast cancer and low rates of AEs compared with controls.

Keywords:
breast cancer, meta-analysis, HER2, T-DM1, efficacy

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