Looking to lead a stronger, healthier life?
Sign up for our Wellness Wire newsletter for all sorts of nutrition, fitness, and wellness wisdom.

Now we’re in this together.
Thanks for subscribing and having us along on your health and wellness journey.

See all Healthline's newsletters »

Understanding HER2-Positive Breast Cancer

Similar to other cancers, breast cancer is divided into different groups or types. HER2-positive is one type of breast cancer. Approximately 20 percent of women with breast cancer have tumors with high levels of the HER2 gene, meaning they have HER2-positive breast cancer.

HER2-positive breast cancer tends to grow and spread more quickly than other types of breast cancer. Fortunately, targeted therapies and treatments to block HER2 receptors are available.