Her2 Metastatic Breast Cancer Causes And Risk Factors
HER2-positive breast cancer means that the breast cancer cells have extra HER2 (human epidermal growth factor receptor 2) proteins on the outside of them. These HER2 receptors can signal the cancer cells to grow quickly and out of control. Breast cancer can be metastatic when it is diagnosed or can come back years later. This article will review the causes and risk factors associated with HER2-positive metastatic breast cancer. Common Causes In many cases, the exact reason why HER2-positive breast cancer starts is unknown, although there have been some connections made between risk factors and being diagnosed with breast cancer....