Autosomal Recessive Spastic Ataxia, also known as ar-spax, is related to spastic ataxia and spastic ataxia, charlevoix-saguenay type. An important gene associated with Autosomal Recessive Spastic Ataxia is SACS (Sacsin Molecular Chaperone), and among its related pathways/superpathways is 13q12.12 copy number variation. Affiliated tissues include cerebellum and brain.