PARP inhibitors have demonstrated efficacy in platinum-sensitive epithelial ovarian cancer, particularly in high-grade serous disease, and in breast cancer with BRCA1/2 mutations.
Olaparib maintenance therapy significantly improved progression-free survival in relapsed high-grade serous ovarian cancer, especially in patients with BRCA1/2 mutations.
Clinical trials are underway to evaluate PARP inhibitors like veliparib, rucaparib, and niraparib in various solid tumors, aiming to identify predictive biomarkers for patient selection.
Research suggests PARP inhibitors' mechanism involves multiple aspects of PARP1 biology, including BER inhibition, PARP1 trapping, defective BRCA1 recruitment, and NHEJ activation.