Metastatic HER2-positive Breast Cancer research hub

A Study Comparing the Efficacy and Safety of Zanidatamab to Trastuzumab, Each in Combination With Physician's Choice Chemotherapy, for the Treatment of Participants With Metastatic HER2-positive Breast Cancer

This study looks at two drug combinations for HER2-positive breast cancer that has spread. It compares a new drug, zanidatamab, with a standard drug, trastuzumab, both given with chemotherapy, to see which works best and is safest after previous treatments haven't worked.