The Food and Drug Administration (FDA) hasn’t approved Yervoy to treat breast cancer. But the drug may be prescribed off-label for this use. (Off-label drug use means using a drug for a purpose other than what it’s been approved for by the FDA.) Several ongoing studies, such as this one, are investigating the effectiveness of Yervoy for treating different forms of breast cancer.
If you’re interested in taking Yervoy for breast cancer, talk with your doctor.