Cerebellar Ataxia, Areflexia, Pes Cavus, Optic Atrophy, and Sensorineural Hearing Loss, also known as capos syndrome, is related to 3-methylglutaconic aciduria, type iii and aceruloplasminemia, and has symptoms including cerebellar ataxia, hemiparesis and reflex, abnormal. An important gene associated with Cerebellar Ataxia, Areflexia, Pes Cavus, Optic Atrophy, and Sensorineural Hearing Loss is ATP1A3 (ATPase Na+/K+ Transporting Subunit Alpha 3). Affiliated tissues include eye and cerebellum, and related phenotypes are ataxia and muscle weakness