SANDPIPER, 2018 | taselisib (4 mg oral, qd) FULV (500 mg) (n=340) vs. palcebo FULV (500 mg) (n=176) | postmenopausal women with estrogen receptor (ER)-positive, human epidermal growth factor receptor-2 (HER2)-negative, PIK3CA-mutant, unresectable, locally advanced or metastatic breast cancer after recurrence or progression during or after an aromatase inhibitor (AI) therapy | double-blind Sample size: 340/176 Primary endpoint: Progression-free survival (investigator) FU duration: |