ARID2 and autosomal dominant cerebellar ataxia: However, the MVP classifier is also showing that cases with an autosomal dominant cerebellar ataxia, deafness, and narcolepsy (ADCADN) (OMIM #604121) episignature are responding on the ARID2 episignature based on the MVP score being higher than 0, some as high as 0.75.