Video content above is prompted by the following: Please briefly review the pivotal data that led to the approval of trastuzumab emtasin (T-DM1) for HER2+ Breast Cancer EMILIA and Dieras_Lancet Oncol_2017 Final OS Analysis TH3RESA and Krop_Lancet Oncol 2017 Final OS: HER2+ aBC KATHERINE and Loibl SABSC Final IDFS and OS Analysis: adjuvant treatment in HER2+ early BC Please briefly review the data that led to FDA approval for trastuzumab deruxtecan (T-DXd) for HER2+ Breast Cancer, plus other recent updates