What is the cancer’s HER2 status?

The cancer tissue that’s removed is tested for high levels of the HER2 gene or protein. HER2 is a gene that helps control how cells grow, divide, and repair themselves. The HER2 gene directs the production of special proteins, called HER2 receptors, in cancer cells. When levels of the HER2 gene or protein are high, the cancer is called HER2-positive (less than 25% of breast cancers are HER2-positive). Cancers that are HER2-positive tend to be more aggressive. But a¬†targeted therapy¬†called Herceptin (chemical name: trastuzumab) works well against these kinds of cancers.


Additional tests

New laboratory tests


Treatment & Stages of male breast cancer

Coping and support for male breast cancer

Related Topics

Benign breast conditions

General breast cancer terms

Types of breast cancer in men








Oncologists, Breast Surgeons are the specialists who deal with the breast cancer