Pyrotinib in Combination With Letrozole in Patients With HER2-Positive, ER-Positive Metastatic Breast Cancer
Status: UNKNOWN
Study type: INTERVENTIONAL
Conditions: Metastatic Breast Cancer
Interventions: DRUG: Pyrotinib Maleate plus Letrozole
Sponsor: Hunan Cancer Hospital
Collaborators: Jiangsu HengRui Medicine Co., Ltd.