Study of Stereotactic Radiosurgery With Olaparib Followed by Durvalumab and Physician's Choice Systemic Therapy in Subjects With Breast Cancer Brain Metastases
This study is a Phase I/II study evaluating the safety and effectiveness of focused radiation therapy (radiosurgery) together with olaparib, followed by immunotherapy, for patients with brain metastases from triple negative or BRCA-mutated breast cancers.
This study will have a Phase I portion in which subjects will be enrolled based on 3+3 dose escalation rules. Three dose levels of olaparib will be studied.
Cycle 1 of study treatment will consist of Olaparib given twice daily concurrently with stereotactic radiosurgery (SRS). Olaparib will start one week prior to SRS and continue during an