Neoadjuvant trastuzumab deruxtecan shows clinical activity in patients with HER2-low breast cancer

Patients with localized, hormone receptor-positive, HER2-low breast cancer treated with trastuzumab deruxtecan (T-DXd, Enhertu) in the neoadjuvant setting had an overall response rate of 75 percent in the absence of anastrozole and 63 percent in combination with anastrozole, according to results from the phase II TRIO-US B-12 TALENT trial presented at the San Antonio Breast Cancer Symposium, held December 6-10, 2022.