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Immune mediated Disorders in Women with a Fragile X Expansion and FXTAS
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Details:
  • Pubmed ID:
    25399540
  • Pubmed Central ID:
    PMC4275322
  • Description:
    Premutation alleles in fragile X mental retardation 1 (FMR1) can cause the late-onset neurodegenerative disorder, fragile X-associated tremor ataxia syndrome (FXTAS) and/or the fragile X-associated primary ovarian insufficiency in approximately 20% of heterozygotes. Heterozygotes of the FMR1 premutation have a higher incidence of immune mediated disorders such as autoimmune thyroid disorder, especially when accompanied by FXTAS motor signs. We describe the time course of symptoms of immune mediated disorders and the subsequent development of FXTAS in four women with an FMR1 CGG expansion, including three with the premutation and one with a gray zone expansion. These patients developed an immune mediated disorder followed by neurological symptoms that become consistent with FXTAS. In all patients we observed a pattern involving an initial appearance of disease symptoms-often after a period of heightened stress (depression, anxiety, divorce, general surgery) followed by the onset of tremor and/or ataxia. Immune mediated diseases are associated with the manifestations of FXTAS temporally, although further studies are needed to clarify this association. If a cause and effect relationship can be established, treatment of pre-existing immune mediated disorders may benefit patients with pathogenic FMR1 mutations.

  • Document Type:
  • Collection(s):
  • Funding:
    90DD05969/DD/NCBDD CDC HHS/United States
    AG032115/AG/NIA NIH HHS/United States
    AG032119/AG/NIA NIH HHS/United States
    HD02274/HD/NICHD NIH HHS/United States
    HD036071/HD/NICHD NIH HHS/United States
    P30 HD002274/HD/NICHD NIH HHS/United States
    R01 HD036071/HD/NICHD NIH HHS/United States
    RL1 AG032115/AG/NIA NIH HHS/United States
    RL1 AG032119/AG/NIA NIH HHS/United States
    UL1 RR024146/RR/NCRR NIH HHS/United States
    UL1 RR024146/RR/NCRR NIH HHS/United States
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