ShortStop-HER2: 12 Months vs. 6 Months of HER2-targeted Medications for People With HER2+ Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Trastuzumab September 26, 2026 Breast Cancer
Breast-Conserving Surgery and Radiation Therapy in Patients With Multiple Ipsilateral Breast Cancer September 26, 2026 Breast Cancer
Randomized, Open Label, Clinical Study of the Targeted Therapy, Palbociclib, to Treat Metastatic Breast Cancer September 26, 2026 Breast Cancer
Pembrolizumab vs. Observation in People With Triple-negative Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Pembrolizumab September 26, 2026 Breast Cancer
Celecoxib in Treating Women With Metastatic or Recurrent Breast Cancer September 26, 2026 Breast Cancer
Tamoxifen Citrate or Z-Endoxifen Hydrochloride in Treating Patients With Locally Advanced or Metastatic, Estrogen Receptor-Positive, HER2-Negative Breast Cancer September 26, 2026 Breast Cancer
Pixantrone Dimaleate in Treating Patients With HER2-Negative Metastatic Breast Cancer September 26, 2026 Breast Cancer