Data from the DESTINY Breast06 trial using the antibody-drug conjugate trastuzumab deruxtecan to treat patients with estrogen receptor positive (HR+), human epidermal growth factor receptor-low (HER2-low), and HER2-ultralow breast cancer after endocrine therapy, show longer progression-free survival in comparison with standard chemotherapy. 

After announcing the results at the 2024 ASCO Annual Meeting, first author Giuseppe Curigliano, MD, PhD, Director of Early Drug Development for the Innovative Therapies Division of the European Institute of Oncology, discussed the findings with Oncology Times correspondent Peter Goodwin