Study study type PathologyT1T0Patientssample sizesROB Results deaths (OS) Eprogression or deaths (PFS) ERFS/DFS E

la/mBC - HER2 positive - 2nd Line (L2) breast cancer - HER2-positive la/mBC - HER2 positive la/mBC - HER2 positive - 2nd Line (L2)

versus trastuzumab emtansine
trastuzumab deruxtecan
DESTINY Breast03, 2022
  NCT03529110
RCTla/mBC - HER2 positive - 2nd Line (L2)trastuzumab deruxtecantrastuzumab emtansinepatients with HER2-positive metastatic breast cancer previously treated with trastuzumab and a taxane-/-some concern
suggested -45% -72%