Phase Ib/II Clinical Study of QLS1304 Combined With Endocrine Therapy in the Treatment of ER+/HER2- Breast Cancer Patients
This study is a multi-center, open label, phase Ib/II clinical trial aimed at evaluating the safety, preliminary efficacy characteristic and PK characteristics of QLS1304 in combined with endocrine therapy in ER+/HER2- breast cancer patients. This study was divided into two stages: combo dose escalation and dose expansion.