Go online to PeerView.com/VHX860 to view the activity, download slides and practice aids, and complete the post-test to earn credit. Poly (ADP-ribose) polymerase (PARP) inhibition is now the standard of care for metastatic breast cancer harboring a germline BRCA1 or BRCA2 mutation, and studies continue to investigate PARP inhibitors as monotherapies or in rational combinations. Most recently, exciting results have revealed a potential role for PARP inhibitor therapy in earlier disease settings where there is a possibility for cure, heralding a new era of targeted therapy for patients with breast cancer. In order to maximize the benefits of these advances, it is crucial for the multidisciplinary breast cancer care team to keep current with the latest data and expert recommendations to effectively integrate PARP inhibitor therapy into clinical practice, as well as genetic counseling and biomarker testing to refine individualized therapy selection. This PeerView educational activity, based on a recent live event, provides essential information on the biologic rationale for targeting PARP, the latest data and their practical implications, guidance for optimizing biomarker testing, and strategies for improving multidisciplinary collaboration so that patients with breast cancer can make the most of the recent advances with PARP inhibitor therapy. Upon completion of this activity, participants should be better able to: Describe DNA damage response (DDR) pathways and the rationale for therapeutic targeting of DDR with PARP inhibitors in early and advanced breast cancer, Identify patients with breast cancer who might benefit from treatment with PARP inhibitors based on current evidence and best practices for biomarker testing, Integrate PARP inhibitors into evidence-based, individualized treatment plans for eligible patients with early and advanced breast cancer considering latest efficacy and safety data in the context of clinical practice or clinical trials, Manage treatment-related adverse events in patients receiving PARP inhibitors for breast cancer treatment.