Ataxia, Spastic, Childhood-Onset, Autosomal Recessive, with Optic Atrophy and Mental Retardation, is also known as ataxia, spastic, childhood-onset, autosomal recessive, with optic atrophy and intellectual disability. An important gene associated with Ataxia, Spastic, Childhood-Onset, Autosomal Recessive, with Optic Atrophy and Mental Retardation is SACS (Sacsin Molecular Chaperone).