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

es-BC - HR-positive - 1st line (L1) breast cancer - HR positive es-BC - HR-positive - 1st line (L1)

versus letrozole
taselisib plus letrozole
LORELEI, 2019
  NCT02273973
RCTes-BC - HR-positive - 1st line (L1)taselisib plus letrozoleplacebo plus letrozolePostmenopausal women (aged >= 18yr), with operable stage I-III invasive BC HR-positive (ER positive) and HER2-negative166 / 168low
suggested