We previously described KCNC3 (Kv3.3, OMIM# 605259 RefSeq NG_008134.1, NP_004968.2 and NM_004977.2 in GenBank) as the gene mutated in SCA13 [6], [7], [8], [9], [10]. This evidence concerns the gene KCNC3 and spinocerebellar ataxia type 13.