Overview T-DM1 Combined With CDK4/6 Inhibitor Ribociclib Status: ENROLLING_BY_INVITATION Trial end date: 2027-10-10 Target enrollment: Participant gender: Summary To explore the efficacy and safety of T-DM1 combined with CDK4/6 inhibitor Ribociclib in the treatment of HER2-positive advanced breast cancer.Phase: PHASE2 Details Lead Sponsor: Zheng YabingTreatments: ribociclib