Trastuzumab emtansine (Kadcyla®) is made of two different drugs joined together in one drug:
- Trastuzumab is a monoclonal antibody that works by 'targeting' specific proteins (receptors) on the surface of cells.
- Emtansine is a chemotherapy drug, which damages cancer cells.
Trastuzumab emtansine is used to treat HER2 positive breast cancers that have spread or come back. It may also be used to treat other HER2 cancers as part of a clinical trial.
Trastuzumab emtansine is not the same as trastuzumab. We have separate information about trastuzumab.