Deafness, Autosomal Dominant 77, also known as dfna77, is related to autosomal dominant nonsyndromic deafness 77. An important gene associated with Deafness, Autosomal Dominant 77 is ABCC1 (ATP Binding Cassette Subfamily C Member 1 (ABCC1 Blood Group)). Affiliated tissues include brain, and related phenotypes are sensorineural hearing impairment and tinnitus