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

la/mBC - HER2 positive - 1st Line (L1) breast cancer - HER2-positive la/mBC - HER2 positive la/mBC - HER2 positive - 1st Line (L1)

versus trastuzumab
pertuzumab plus trastuzumab
PERTAIN, 2018
  NCT01491737
RCTla/mBC - HER2 positive - 1st Line (L1)pertuzumab plus trastuzumab plus an AI (letrozole or anastrozole)trastuzumab plus an AI (letrozole or anastrozole)Postmenopausal patients, with first-line HER2-positive and HR positive disease129 / 129NA
conclusif demonstrated-35%