Dalpiciclib, Anti-HER2 Therapy, and Endocrine Therapy for Hormone-Receptor-Positive, HER2-Positive Metastatic Breast Cancer
Efficacy and Safety of Dalpiciclib Combined with Anti-HER2 Targeted Therapy and Endocrine Therapy as First-line Maintenance Treatment for Patients with Recurrent or Metastatic Hormone-Receptor-Positive, HER2-positive Breast Cancer.