Deafness, Autosomal Dominant 18, also known as autosomal dominant nonsyndromic deafness 18, is related to myotonic dystrophy 2 and deafness, autosomal dominant 4a. An important gene associated with Deafness, Autosomal Dominant 18 is DFNA18 (Deafness, Autosomal Dominant 18). Related phenotypes are progressive hearing impairment and hearing/vestibular/ear