Triple negative breast cancer

When breast cancers are HER2 negative, oestrogen receptor negative and also test negative for progesterone receptors, this is referred to as ‘triple negative’ breast cancer. This is quite common in medullary breast cancer.

If you have triple negative breast cancer, you may feel concerned that you are not able to have treatments such as trastuzumab or hormone therapy. However, people diagnosed with medullary breast cancer generally have a better prognosis (outlook) than people with some other types of triple negative breast cancer.