Different Doses of Dalpicicl Combined With Letrozole in the First-line Treatment of HR-positive, HER2-negative Advanced Breast Cancer
Conditions
- HR Positive HER2 Negative Advanced Breast Cancer
Interventions
- DRUG: Dalpiciclib 125mg
- DRUG: Dalpiciclib 150mg
- DRUG: Letrozole 2.5mg
Sponsor
wanghaibo