The function of Ensembl gene identifier ENSG00000188620 (HMX3, H6 family homeobox 3) is as follows. Transcription factor involved in specification of neuronal cell types and which is required for inner ear and hypothalamus development. Binds to the 5'-CAAGTG-3' core sequence. Controls semicircular canal formation in the inner ear. Also required for hypothalamic/pituitary axis of the CNS (By similarity). .