Pyrotinib plus capecitabine could significantly improve overall survival in HER2-positive metastatic breast cancer.

Signal Transduct Target Ther

Department of Medical Oncology and State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Published: March 2023

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10025258PMC
http://dx.doi.org/10.1038/s41392-023-01322-wDOI Listing

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Background: The phase 2 PERMEATE study has shown the antitumor activity and safety of pyrotinib plus capecitabine in patients with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer and brain metastases. In this report, survival results were updated with extended follow-up.

Methods: Between January 29, 2019 and July 10, 2020, adult patients with HER2-positive metastatic breast cancer who had radiotherapy-naïve brain metastases (cohort A, n = 59) or progressive disease after radiotherapy (cohort B, n = 19) were enrolled and received pyrotinib (400 mg once daily) and capecitabine (1000 mg/m twice daily on days 1-14 of each 21-day cycle) until disease progression or unacceptable toxicity.

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Article Synopsis
  • A study evaluated the effectiveness and safety of pyrotinib combined with metronomic vinorelbine for patients with HER2-positive advanced breast cancer who did not respond to trastuzumab treatment.
  • The trial involved 36 patients and reported a median progression-free survival (PFS) of 13.5 months, with an overall response rate (ORR) of 38.9% and a disease control rate (DCR) of 83.3%.
  • Common side effects included diarrhea and vomiting, but no severe adverse events were noted, indicating a promising treatment option for these patients.
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