Trial Identifiers
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Scientific Title
A Phase III Randomized, Double-Blind, Placebo-Controlled, Multicenter Study Evaluating the Efficacy and Safety of GDC-9545 Combined With Palbociclib Compared With Letrozole Combined With Palbociclib in Patients With Estrogen Receptor-Positive, HER2-Negative Locally Advanced or Metastatic Breast Cancer
Commercial Sponsor
Hoffmann-La Roche
Summary
Eligible patients will be randomly selected to receive oral GDC-9545 or oral Letrozole once per day on Days 1-28 of each 28-day treatment cycle, plus 125mg Palbociclib once per day on Days 1-21 of each 28-day treatment cycle. Patients that are premenopausal or male will also receive a luteinizing hormone-releasing hormone (LHRH) agonist on Day 1 of each 28-day treatment cycle, as determined and supplied by the investigator.