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.