Neuropathy, Hereditary Motor and Sensory, with Deafness, Impaired Intellectual Development, and Absent Sensory Large Myelinated Fibers, also known as charcot-marie-tooth disease-hearing loss-intellectual disability syndrome, is related to charcot-marie-tooth disease and deafness and hereditary sensory neuropathy. Related phenotypes are intellectual disability, mild and decreased nerve conduction velocity