Among the spinocerebellar ataxia syndromes, spinocerebellar ataxia 27B (SCA27B), an autosomal dominant genetic disorder caused by GAA·TTC repeat expansion in the first intron of the FGF14 gene, which encodes the fibroblast growth factor 14, is one of the most prevalent causes of late-onset ataxia [2]. The gene discussed is FGF14; the disease is late-onset spinocerebellar ataxia 27b.