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. This evidence concerns the gene BRD4 and lung carcinoma.