FGF14 and autosomal dominant cerebellar ataxia: One SCA-associated gene can be associated with more than one of these mechanisms, as is the case for FGF14. Missense and frameshift variants in FGF14 have previously been reported to cause SCA27 but, very recently, an intronic GAA repeat expansion was found to interfere with FGF14 transcription causing ATX-FGF14 [16, 17].