Individual carriers of a premutation allele in the FMR1 gene (55–200 CGG repeats) are at risk of developing Fragile X-associated tremor/ataxia syndrome (FXTAS) a late onset neurodegenerative disorder characterized by intentional tremor, gait ataxia, autonomic dysfunction, and Parkinsonism (Tassone and Hall, 2016). Here, FMR1 is linked to fragile X-associated tremor/ataxia syndrome.