Deafness, Autosomal Recessive 20, also known as autosomal recessive nonsyndromic deafness 20, is related to deafness, autosomal recessive and sensorineural hearing loss. An important gene associated with Deafness, Autosomal Recessive 20 is DFNB20 (Deafness, Autosomal Recessive 20). Related phenotypes are hearing impairment and sensorineural hearing impairment