Fam-trastuzumab deruxtecan-nxki (Enhertu – Daiichi Sankyo/AstraZeneca), which received accelerated approval by the FDA in 2019 for treatment of HER2-positive breast cancer based on its rate and duration of response,1 has been granted regular approval for treatment of adults with unresectable or metastatic HER2-positive breast cancer who received a prior anti-HER2-based regimen in the metastatic setting or in the neoadjuvant or adjuvant setting and developed recurrence during or within 6 months of completing treatment.