Journal of Practical Oncology ›› 2022, Vol. 36 ›› Issue (6): 570-575.doi: 10.11904/j.issn.1002-3070.2022.06.015

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Clinical research progress of breast cancer with low HER2 expression

WU Ruiyue1, ZHU Kaili1, YANG Jingru1,2, LING Xiaoling1,2   

  1. 1. First Clinical Medical College of Lanzhou University,Lanzhou 730000,China;
    2. Department of Oncology,The First Hospital of Lanzhou University
  • Received:2022-10-09 Revised:2022-10-20 Online:2022-12-28 Published:2023-01-06

Abstract: Breast cancer is the malignant tumor with the highest incidence in the world,which seriously affects women′s health.As an important therapeutic target for breast cancer,human epidermal growth factor receptor 2(HER2)has improved the prognosis of these patients.In the past diagnosis and treatment process,breast cancer with low HER2 expression was classified as HER2 negative breast cancer.With the deepening research,it is found that breast cancer patients with HER2 low expression have some differences in clinicopathological and molecular biological characteristics,as well as survival prognosis,and are difficult to benefit from traditional anti-HER2 therapy.Several studies have explored the efficacy and safety of antibody-drug conjugates(ADCs)and other new drugs in breast cancer with low HER2 expression.This article will review the research progress of breast cancer with low HER2 expression.

Key words: Breast cancer, HER2, Low expression, Research progress

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