Spinocerebellar ataxia 13 (SCA13) is caused by mutations in the KCNC3 gene, which encodes the Kv3.3 voltage-gated K+ channel (Waters et al., 2006; Figueroa et al., 2010; Figueroa et al., 2011; Duarri et al., 2015; Zhang and Kaczmarek, 2016). The gene discussed is KCND3; the disease is spinocerebellar ataxia type 13.