Mondo Description Any hereditary ataxia in which the cause of the disease is a mutation in the RNF170 gene.

Uniprot Description A rare disease characterized by progressive ataxia caused by degeneration of the posterior columns of the spinal cord. Affected individuals have a reduced ability to feel pain, temperature and vibration, particularly in the hands and feet. Their most prominent feature is an ataxic gait resulting from a severe loss of proprioception. Thus, patients rely on visual cues for maintaining proper body posture, such that they are unable to remain upright if their eyes are closed (Romberg sign).

Disease Ontology Description A hereditary ataxia characterized by gait difficulty and instability especially in dark conditions resulting from sensory loss in the extremities and without cerebellar involvement that has_material_basis_in heterozygous mutations in the RNF170 gene on chromosome 8.