Study Evaluating Hemay022 in Combination With Endocrine Therapy In Subjects With ER Positive and HER2 Positive Advanced Breast Cancer
Status: UNKNOWN
Study type: INTERVENTIONAL
Conditions: Breast Cancer
Interventions: DRUG: Hemay022+exemestane|DRUG: Hemay022+letrozole|DRUG: Hemay022+ fulvestrant
Sponsor: Tianjin Hemay Pharmaceutical Co., Ltd