Fragile X-associated tremor/ataxia syndrome (FXTAS) is one of these disorders, due to the expansion of the CGG repeat element at a noncoding region of the fragile X messenger ribonucleoprotein 1 (FMR1) gene in the premutation range (55–200 repeats) [4,5]. This evidence concerns the gene FMR1 and fragile X-associated tremor/ataxia syndrome.