Olaparib and Alpelisib for Treatment of Metastatic Breast Cancer, A ComboMATCH Treatment Trial

This phase II ComboMATCH treatment trial studies the effect of adding a drug called BYL719 (alpelisib) to the usual treatment of olaparib in patients with breast cancer that has spread from where it first started (breast) to other places in the body (metastatic). Olaparib is an inhibitor of PARP, an enzyme that helps repair DNA when it becomes damaged. Blocking PARP may help keep tumor cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. Alpelisib blocks certain proteins, which may help keep tumor cells from growing and may kill them. It is a type of kinase inhibitor. Giving alpelisib in combination with olaparib may be able to improve treatment results for patients with metastatic breast cancer.