We are developing CK-103, an oral, inhibitor of the BET protein, BRD4. A bromodomain is an amino acid protein domain that recognizes acetylated-lysine. The binding of the drug prevents interaction between BET proteins and both acetylated histones and transcription factors. Therefore, BET proteins, such as BRD4, are considered potential therapeutic targets in cancer, as they may play a pivotal role in regulating the transcription of key regulators of cancer cell growth and survival, including the c-Myc oncogene. BRD4 is often required for expression of c-Myc. Scientific literature has shown that small molecule inhibition of BET bromodomains may lead to selective killing of tumor cells across a broad range of hematologic malignancies and certain targeted solid tumors. We plan to develop CK-103 for the treatment of various advanced and metastatic solid tumor cancers, including, but not limited to, those associated with elevated c-Myc expression.
In May 2015, we entered into an exclusive license agreement with Jubilant Biosys Limited (“Jubilant”) to develop and commercialize novel compounds that inhibit the BRD4 protein on a worldwide basis. We are currently completing the required IND-enabling studies to support an IND application for CK-103.