ATXN8 and spinocerebellar ataxia type 8: CTG triplet amplification in 3′-UTR may occur in dystrophia myotonica protein kinase (DMPK) gene, and alternative splicing of junctophilin (JPH) gene exon 2a and ataxin8 (ATXN8) gene, which can, respectively, result in Muscular dystrophy type 1 (DM1), Huntington disease-like 2 (HDL2), and Spinocerebellar Ataxia 8 (SCA8).