Two distinct splice site mutations in CACNA2D2, for example, lead to the truncation of the protein, causing epilepsy, dyskinesia, and cerebellar atrophy in one patient (Pippucci et al., 2013), whereas the other mutation is associated with congenital ataxia (Valence et al., 2018). Here, CACNA2D2 is linked to Cerebellar atrophy.