Journal of International Oncology ›› 2022, Vol. 49 ›› Issue (9): 513-516.doi: 10.3760/cma.j.cn371439-20220609-00099

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Research progress of breast cancer with low HER2 expression

Xu Hangcheng, Wu Yun, Wang Jiayu()   

  1. Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
  • Received:2022-06-09 Revised:2022-06-15 Online:2022-09-08 Published:2022-10-21
  • Contact: Wang Jiayu E-mail:drwangjy@126.com

Abstract:

Breast cancer with low expression of human epidermal growth factor receptor 2 (HER2) has unique biological behaviors. Compared with HER2-zero breast cancer, there are significant differences in molecular subtype and gene expression between the two categories of breast cancer. Novel antibody-drug conjugates represented by T-DXd provide a new treatment option for patients with HER2-low breast cancer, and relevant clinical trials are continuing. At present, the relationship between HER2-low status and prognosis of breast cancer patients remains controversial. In-depth research into HER2-low breast cancer will help further improve clinical outcomes for this population.

Key words: Breast neoplasms, Prognosis, Therapeutics, Low expression of human epidermal growth factor receptor 2