Bromodomain protein 4 (BRD4) is a member of the bromodomain and extra terminal (BET) protein family that primarily regulates genes involved in apoptotic functions.[140] Recent studies have shown that degradation products of BRD4 (e.g., dBET6) are able to efficiently induce apoptosis in human lung cancer cells. The gene discussed is BRD4; the disease is lung cancer.