Recent Progress in HER2 Associated Breast Cancer

  • Wang, Wei-Jia (Department of Pathology, the First Affiliated Hospital of Nanchang University) ;
  • Lei, Yuan-Yuan (Department of Pathology, the First Affiliated Hospital of Nanchang University) ;
  • Mei, Jin-Hong (Department of Pathology, the First Affiliated Hospital of Nanchang University) ;
  • Wang, Chun-Liang (Department of Neurosurgery, the First Affiliated Hospital of Nanchang University)
  • Published : 2015.04.14


Breast cancer is the most common cancer worldwide among women and the second most common cancer. Approximately 15-23% of breast cancers over-express human epidermal growth factor receptor2 (HER2), a 185-kDa transmembrane tyrosine kinase, which is mainly found at the cell surface of tumor cells. HER2-positive breast cancer, featuring amplification of HER2/neu and negative expression of ER and PR, has the three following characteristics: rapid tumor growth, lower survival rate, and better response to adjuvant therapies. Clinically, it is notable for its role in a pathogenesis that is associated with increased disease recurrence and acts as a worse prognosis. At the same time, it represents a good target for anti-cancer immunotherapy despite the prevalence of drug resistance. New treatments are a major topic of research, and a brighter future can be expected. This review discusses the role of HER2 in breast cancer, therapeutic modalities available and prognostic factors.


HER2;breast cancer;mechanism;treatment


Supported by : National Natural Science Foundation of China


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