SCN8A and cerebellar ataxia: In Alpine Dachsbracke dogs, with clinical signs including clinical manifestations such as a wide-based stance, spinocerebellar ataxia distinguished by hypermetria in the thoracic limbs, hyperflexion in the pelvic limbs, compromised balance, pendular nystagmus, and truncal swaying, a specific genetic variant affecting a protein within the essential region of the SCN8A gene (c.4898G>T; p.Gly1633Val) has been linked to spinocerebellar ataxia.