Deafness, Autosomal Dominant 67, also known as dfna67, is related to deafness, autosomal dominant 68 and deafness, autosomal dominant 1, with or without thrombocytopenia. An important gene associated with Deafness, Autosomal Dominant 67 is OSBPL2 (Oxysterol Binding Protein Like 2). Affiliated tissues include brain, and related phenotypes are sensorineural hearing impairment and tinnitus