A daily pill has been approved to treat advanced breast cancer. This cancer has spread beyond the breast and is fueled by estrogen, but lacks high levels of a certain protein.

The pill, also known as camizestrant, works by blocking a pathway that allows cancer cells to grow. A blood test guides the treatment, detecting resistance before it shows up on scans.

Further information about this new treatment is available, including details about the specific group of patients it is intended for and how it addresses tumor adaptation.