This syndrome has characteristics of axonal sensory and autonomic neuropathy with hearing loss. It has been described in a large five-generation Chinese family. Onset occurred in the second decade of life with mild to severe hearing impairment due to degeneration of the auditory nerve, followed by late-onset of a diffuse and progressive peripheral sensory neuropathy. The causative gene was mapped to the AUNX1 locus on chromosome Xq23-27.3. Transmission was X-linked recessive. [from
SNOMEDCT_US]