What Is HER2-Low Breast Cancer?
Chelsea Backler, MSN, APRN, AGCNS-BC, AOCNS®, VA-BC
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Description
Human epidermal growth factor receptor 2 proteins are involved in normal cellular growth and are found on the surface of all breast cells. Approximately 20% of breast cancers are HER2 positive, meaning they have high levels of HER2 protein, and those cancers typically grow and metastasize more quickly than other types of breast cancer.