Any autosomal recessive spastic ataxia in which the cause of the disease is a mutation in the MARS2 gene. The disease is spastic ataxia 3 (Monarch Disease Ontology id MONDO_0012664). Also known as: ARSAL, MARS2 autosomal recessive spastic ataxia, SPAX3, autosomal recessive spastic ataxia caused by mutation in MARS2, autosomal recessive spastic ataxia type 3, spastic ataxia type 3.