Trastuzumab : in HER2 and hormone receptor co-positive metastatic breast cancer. - Her-2 co positive breast cancer
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HER2-positive breast cancer is a breast cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2), which promotes the. Learn how doctors test for HER2 status and what it means as well as how it can help determines the best treatment options for your breast cancer.