A Study of Palbociclib (PD-0332991) + Letrozole vs. Letrozole For 1st Line Treatment Of Postmenopausal Women With ER+/HER2- Advanced Breast Cancer (PALOMA-2)
Conditions
Interventions
- DRUG: PD-0332991
- DRUG: Letrozole
- DRUG: Placebo
- DRUG: Letrozole
Sponsor
Pfizer