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Fragile X–associated tremor/ataxia syndrome (FXTAS) is a late‐onset neurodegenerative disorder associated with premutation alleles (55–200 CGG repeats) of the fragile X mental retardation 1 (FMR1) gene. FXTAS is characterized by… Click to show full abstract
Fragile X–associated tremor/ataxia syndrome (FXTAS) is a late‐onset neurodegenerative disorder associated with premutation alleles (55–200 CGG repeats) of the fragile X mental retardation 1 (FMR1) gene. FXTAS is characterized by the presence of ubiquitin‐positive inclusions in neurons and astrocytes and by cerebellar tremor and ataxia. Parkinsonism has been reported in FXTAS, but most patients lack the characteristic rest tremor and severe rigidity seen in idiopathic Parkinson's disease (PD).
Journal Title: Movement Disorders Clinical Practice
Year Published: 2020
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