Biological Activity:

OTX015 is a novel, highly potent, selective and cell permeable inhibitor of the bromodomain and extra terminal (BET) family proteins BRD2, BRD3 and BRD4 with IC₅₀ of 10-19 nM. It inhibits the growth of a variety of human cancer cell lines with IC₅₀ ranging from 60 to 200 nM. OTX015 results in rapid down-regulation of c-MYC expression, and show the synergistic anti-proliferative effects in combination with ALK inhibitors in ALKpos ALCL cell lines. In vivo studies using OTX015 have demonstrated efficacy in a range of oncology models. OTX015 is currently in phase I clinical development for oncology indication.