- Breast cancer
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Pyrotinib Combined with Vinorelbine in Patients with Previously Treated HER2-Positive Metastatic Breast Cancer: A Multicenter, Single-Arm, Prospective Study
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Kuikui Jiang, Ruoxi Hong, Wen Xia, Qianyi Lu, Liang Li, Jianhao Huang, Yanxia Shi, Zhongyu Yuan, Qiufan Zheng, Xin An, Cong Xue, Jiajia Huang, Xiwen Bi, Meiting Chen, Jingmin Zhang, Fei Xu, Shusen Wang
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Cancer Res Treat. 2024;56(2):513-521. Published online October 12, 2023
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DOI: https://doi.org/10.4143/crt.2023.786
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 Abstract
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- Purpose
This study aims to evaluate the efficacy and safety of a new combination treatment of vinorelbine and pyrotinib in human epidermal growth factor receptor 2 (HER2)–positive metastatic breast cancer (MBC) and provide higher level evidence for clinical practice.
Materials and Methods
This was a prospective, single-arm, phase 2 trial conducted at three institutions in China. Patients with HER2-positive MBC, who had previously been treated with trastuzumab plus a taxane or trastuzumab plus pertuzumab combined with a chemotherapeutic agent, were enrolled between March 2020 and December 2021. All patients received pyrotinib 400 mg orally once daily plus vinorelbine 25 mg/m2 intravenously or 60-80 mg/m2 orally on day 1 and day 8 of 21-day cycle. The primary endpoint was progression-free survival (PFS), and the secondary endpoints included the objective response rate (ORR), disease control rate (DCR), overall survival, and safety.
Results
A total of 39 patients were enrolled. All patients had been pretreated with trastuzumab and 23.1% (n=9) of them had accepted trastuzumab plus pertuzumab. The median follow-up time was 16.3 months (95% confidence interval [CI], 5.3 to 27.2), and the median PFS was 6.4 months (95% CI, 4.0 to 8.8). The ORR was 43.6% (95% CI, 27.8% to 60.4%) and the DCR was 84.6% (95% CI, 69.5% to 94.1%). The median PFS of patients with versus without prior pertuzumab treatment was 4.6 and 8.3 months (p=0.017). The most common grade 3/4 adverse events were diarrhea (28.2%), neutrophil count decreased (15.4%), white blood cell count decreased (7.7%), vomiting (5.1%), and anemia (2.6%).
Conclusion
Pyrotinib plus vinorelbine showed promising efficacy and tolerable toxicity as second-line treatment in patients with HER2-positive MBC.
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Citations
Citations to this article as recorded by  - Unraveling the future: Innovative design strategies and emerging challenges in HER2-targeted tyrosine kinase inhibitors for cancer therapy
Sixiang Zheng, Ruixian Chen, Lele Zhang, Lun Tan, Lintao Li, Fangyi Long, Ting Wang
European Journal of Medicinal Chemistry.2024; 276: 116702. CrossRef - Pyrotinib combined with metronomic etoposide in heavily pretreated HER2-positive metastatic breast cancer: a single-arm, phase II study
Jiaxuan Liu, Maiyue He, Mingxia Jiang, Shihan Zhou, Mengqi Zhang, Yiqun Li, Shanshan Chen, Ruigang Cai, Hongnan Mo, Bo Lan, Fei Ma, Binghe Xu, Qiao Li
BMC Cancer.2024;[Epub] CrossRef
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