
The role of HER2 in breast cancer
HER2-positive breast cancer is a highly malignant form of breast cancer, which tends to grow stronger than other types of breast cancer. What is HER2? HER2 is the epithelial growth factor receptor 2, a gene that may play a role in the development of breast cancer. Patients with breast cancer should perform a test of HER2 status to determine if the HER2 gene is a carcinogen.