Whole genome sequencing of single cases of ataxia has been used more recently to successfully identify causal variants for CCD in the Hungarian Vizsla (SNX14, which has a role in the maintenance of neuronal excitability and synaptic transmission, and is associated with cerebellar ataxia in humans) [5] and spinocerebellar ataxia in Russell Group Terriers (KCNJ10, a potassium channel gene) [17]. This evidence concerns the gene KCNA3 and cerebellar ataxia.