in taxon has material basis in germline mutation in FDXR hereditary cerebellar ataxia, non-human animal equine juvenile spinocerebellar ataxia, FDXR-related, horse https://github.com/monarch-initiative/mondo/issues/9143 Any spinocerebellar ataxia that occurs in horses due to a variation in the FDXR gene. EJSCA is a degenerative axonopathy characterized by acute onset of ataxia within the first month of life, affecting the pelvic limbs more severely than the thoracic limb and rapidly progressing to inability to stand. MONDO:7770001 EJSCA https://orcid.org/0000-0002-5002-8648 Equus caballus