The purpose of this study is to determine whether an investigational drug called datopotamab deruxtecan (also known as Dato-DXd) is as good or better at treating locally recurrent inoperable or metastatic triple-negative breast cancer, as compared to a single standard chemotherapy.
Dato-DXd is an investigational drug, which means it is not yet approved by the U.S. Food and Drug Administration (FDA). The chemotherapy options used in this study are FDA-approved.