Testing the Addition of an Anti-cancer Drug, Copanlisib, to the Usual Maintenance Treatment (Trastuzumab and Pertuzumab) After Initial Chemotherapy in a Phase Ib/II Trial for Advanced HER2 Positive Breast Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Cancer Trials Ireland
Mayo Clinic
OHSU Knight Cancer Institute
Jonsson Comprehensive Cancer Center