Overview Clinical Trial of Alpelisb and Tucatinib in Patients With PIK3CA-Mutant HER2+ Metastatic Breast Cancer. Status: Not yet recruiting Trial end date: 2025-06-30 Target enrollment: Participant gender: Summary Phase IB/II clinical trial of Alpelisb and Tucatinib in patients with PIK3CA-Mutant HER2-positive metastatic breast cancer. Phase: Phase 1/Phase 2 Details Lead Sponsor: Criterium, Inc.Collaborators: NovartisSeagen Inc.Treatments: FulvestrantTucatinib