This protein promotes the growth of cancer cells In about 1 of every 5 breast cancers, the cancer cells have extra copies of the gene that makes the her2 protein. Debu tripathy, m.d., explains what makes her2 positive breast cancer more aggressive than other cancer types, plus how it’s diagnosed and treated. While her2 is more aggressive than other types of breast cancer, there are treatments that can help You can go over treatment options. Her2 (human epidermal growth factor receptor 2) is a protein
Some breast cancer cells have a higher than normal level of her2 on their surface, which helps them to grow In about 10% to 20% of breast cancers, the her2 gene doesn't work correctly and makes too many copies of itself (known as her2 gene amplification) All these extra her2 genes tell breast cells to make too many her2 receptors (her2 protein overexpression) This makes breast cells grow and divide in an uncontrolled way.
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