A Study of Tucatinib or Placebo With Trastuzumab and Pertuzumab for Metastatic HER2+ Breast Cancer
Status:
Not yet recruiting
Trial end date:
2027-06-30
Target enrollment:
Participant gender:
Summary
This study is being done to see if tucatinib works better than placebo when given with other
drugs to treat participants with HER2-positive breast cancer. A placebo is a pill that looks
the same as tucatinib but has no medicine in it. This study will also test what side effects
happen when participants take this combination of drugs. A side effect is anything a drug
does to the body besides treating your disease.
Participants will have cancer that has spread in the body near where it started (locally
advanced) and cannot be removed (unresectable) or has spread through the body (metastatic).
In this study, all participants will get either tucatinib or placebo. Participants will be
assigned randomly to a group. This is a blinded study, so patients and their doctors will not
know which group a participant is in.
All participants will also get trastuzumab and pertuzumab. These are 2 drugs used to treat
this type of cancer.