A Study of SHR6390 in Combination With Letrozole or Anastrozole in Patients With HR Positive and HER2 Negative Advanced Breast Cancer
Conditions
Interventions
- DRUG: SHR6390 Tablets
- DRUG: Placebo Tablets
- DRUG: Letrozole or Anastrozole Tablets
Sponsor
Jiangsu HengRui Medicine Co., Ltd.