Breast Cancer Clinical Trial
Official title:
A Randomized, Multicenter, Double-blind Phase 3 Study of Amcenestrant (SAR439859) Plus Palbociclib Versus Letrozole Plus Palbociclib for the Treatment of Patients With ER (+), HER2 (-) Breast Cancer Who Have Not Received Prior Systemic Anti-cancer Treatment for Advanced Disease
Primary Objective: To determine whether Amcenestrant (SAR439859) in combination with palbociclib improves progression free survival (PFS) when compared with letrozole in combination with palbociclib in participants with estrogen receptor positive (ER+), human epidermal growth factor receptor 2 negative (HER2-) advanced breast cancer who have not received any prior systemic anticancer therapies for advanced disease. Secondary Objective: - To compare the overall survival in both treatment arms. - To evaluate the objective response rate in both treatment arms. - To evaluate the duration of response in both treatment arms. - To evaluate the clinical benefit rate in both treatment arms. - To evaluate progression-free survival on next line of therapy. - To evaluate the pharmacokinetics of amcenestrant, and palbociclib. - To evaluate health-related quality of life in both treatment arms. - To evaluate the time to first chemotherapy in both treatment arms. - To evaluate safety in both treatment arms.
Study duration per participant was approximately 59 months, which includes a 33- month treatment period. ;
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