Patients with metastatic breast cancer whose tumors express low levels of HER2 are generally classified and treated as having HER2-negative disease. However, Dr. Shanu Modi of the Memorial Sloan Kettering Cancer Center and a group of international collaborators explored the use of a monoclonal antibody–drug conjugate (trastuzumab–deruxtecan) in patients with disease they classify as HER2-“low.” Compared […]