HSP90B2P and autosomal dominant cerebellar ataxia: Moreover, pathogenic repeat expansions which are implicated in all SCA types (SCA types 1–3, 6, 7, 12, and 17) and DRPLA, as well as large deletions or duplications of HSP culprit genes (SPAST, ATL1, REEP1, PGN, and SPG11), was excluded in this family.