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What is HER2-positive breast cancer, and why does it matter?

HER2 is a protein found on the outside of all breast cells. It plays a role in cell growth.

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HER2 is a protein involved with cell growth. It sits on the outside of all breast cells. When breast cancer cells have more HER2 than normal, they can grow more quickly and spread to other parts of the body. Doctors use a HER2 test to measure this protein in your cancer cells. The results help your care team decide which treatment is best for you. Targeted therapy is one option — it uses drugs to attack specific cancer cells with less harm to normal cells. Talk with your care team about your HER2 result and what it means for your plan.

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Cairava shares general education, not medical advice. It can’t diagnose you or change your treatment — your care team does that. If something feels like an emergency, call your local emergency number. Questions are de-identified and used to learn what patients need help with.

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This page is educational, not medical advice. Talk with your care team about decisions that apply to you. If something feels urgent, contact your care team — for emergencies call your local emergency number.

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