NUV-868, a BD2-selective oral small molecule bromodomain and extra-terminal (BET) inhibitor, inhibits BRD4. BRD4 is a key member of the BET family, which epigenetically regulates proteins that control tumor growth and differentiation.
NUV-868 is almost 1,500 times more selective for BD2 than BD1 and is designed to alleviate the therapeutic limiting toxicities observed by other non-BD2 selective BET inhibitors. NUV-868 in combination with androgen-receptor directed therapies may help to overcome resistance in prostate cancer. In addition, NUV-868 in combination with PARP inhibitors may act synergistically to increase efficacy across multiple solid tumors.
We initiated a Phase 1 monotherapy, dose escalation study of NUV-868 for the treatment of patients with advanced solid tumors. In addition, we initiated a Phase 1b dose escalation study of NUV-868 in combination with olaparib for patients with ovarian, pancreatic, metastatic castration-resistant prostate, triple negative breast cancers and other solid tumors, and of NUV-868 in combination with enzalutamide for patients with metastatic castration-resistant prostate cancer. Enrollment is currently ongoing in the Phase 1 monotherapy and Phase 1b combination studies.