What is hers 2 mean and tell me more about it. Daughter just diagnosed with invasive ductual carcicoma tell me about this ty?

Answer 1

HER2, or human epidermal growth factor receptor 2, is a protein that promotes the growth of cancer cells. In some cancers, notably Breast cancer, the cancer cells have too much HER2 protein or too many copies of the HER2 gene, leading to more aggressive tumor growth. This type of cancer is referred to as HER2-positive.