Mondo Description Infantile-onset spinocerebellar ataxia (IOSCA) is a hereditary neurological disorder with early and severe involvement of both the peripheral and central nervous systems. It has only been described in Finnish families.

Uniprot Description A severe disease associated with mitochondrial dysfunction. Some patients are affected by progressive atrophy of the cerebellum, brain stem, the spinal cord, and sensory axonal neuropathy. Clinical features include hypotonia, athetosis, ataxia, ophthalmoplegia, sensorineural hearing deficit, sensory axonal neuropathy, epileptic encephalopathy and female hypogonadism. In some individuals liver dysfunction and multi-organ failure is present.

Disease Ontology Description A mitochondrial metabolism disease that is characterized by progressive ataxia, hypotonia, hyporeflexia, athetosis and sensory impairment and has_material_basis_in autosomal recessive homozygous or compound heterozygous mutation in the C10ORF2 gene, which encodes the twinkle and twinky proteins, on chromosome 10q24.