What Is Her2 Positive Breast Cancer

What Is Her2 Positive Breast Cancer

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What Is Her2 Positive Breast Cancer

HER2positive breast cancer is a breast cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2), which promotes the growth of cancer cells. In about 1 of every 5 breast cancers, the cancer cells have a gene mutation that makes an excess of the HER2 protein.
Breast cancers with HER2 gene amplification or HER2 protein overexpression are called HER2-positive in the pathology report. HER2positive breast cancers .

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