HES5 (Hes Family BHLH Transcription Factor 5) encodes a member of a family of basic helix-loop-helix transcriptional repressors. The protein product of HES5, which is activated downstream of the Notch pathway, regulates cell differentiation in multiple tissues. Disruptions in the normal expression of HES5 have been associated with developmental diseases and cancer. HES5 is a Protein Coding gene. Diseases associated with HES5 include Valproate Embryopathy, Susceptibility To. Among its related pathways are Signaling by NOTCH1 and NOTCH2 Activation and Transmission of Signal to the Nucleus.