HER2/neu

HER2/neu is a protein found on the surface of some cells, particularly in breast tissue. In certain cancers, like breast cancer, HER2/neu can be overexpressed, meaning there are too many of these proteins, which can lead to more aggressive tumor growth. Testing for HER2/neu helps determine the type of cancer and guides treatment decisions. If a breast cancer is HER2-positive, targeted therapies like trastuzumab (Herceptin) can be effective in treating it. Understanding HER2/neu status is crucial for tailoring the right approach to cancer care.