Deafness, Autosomal Recessive 1a, also known as deafness, digenic, gjb2/gjb3, is related to deafness, autosomal recessive 1b and deafness, autosomal dominant 3a. An important gene associated with Deafness, Autosomal Recessive 1a is GJB2 (Gap Junction Protein Beta 2), and among its related pathways/superpathways are Olfactory Signaling Pathway and Sensory processing of sound. Affiliated tissues include brain and skin, and related phenotypes are abnormal vestibular function and sensorineural hearing impairment