Cerebellar Ataxia, Deafness, and Narcolepsy, Autosomal Dominant, also known as autosomal dominant cerebellar ataxia, deafness and narcolepsy, is related to neuropathy, hereditary sensory, type ie and contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a, and has symptoms including cerebellar ataxia, muscle spasticity and excessive daytime somnolence. An important gene associated with Cerebellar Ataxia, Deafness, and Narcolepsy, Autosomal Dominant is DNMT1 (DNA Methyltransferase 1), and among its related pathways/superpathways are Chromatin Regulation / Acetylation and One-carbon metabolism and related pathways. Affiliated tissues include brain and eye, and related phenotypes are sensorineural hearing impairment and narcolepsy