A trial looking at trastuzumab deruxtecan for breast cancer (DESTINY Breast06)

This trial is comparing trastuzumab deruxtecan with chemotherapy for breast cancer that has spread.

It is open to people whose cancer got worse while having hormone treatment and the cancer has:

• spread from the breast into the surrounding area (locally advanced breast cancer) or

• spread to another part of the body (secondary breast cancer)

And your breast cancer must:

• have a small number of HER2 receptors

• hormone receptor positive