FGF14 and spinocerebellar ataxia type 27: The findings of additional FGF14 mutations (e.g., a 1 bp deletion c.487delA/p.D163fsX12 [81] and a missense mutation (c.529A > T/p.K177X) [82]) in autosomal dominant ataxias confirm that FGF14 is the disease gene in SCA27.