EPI-743 for Friedreichs Ataxia Patients with Point Mutations

Kelly L. Sullivan, Mary Freeman, Jessica Shaw, Clifton Gooch, Yangxin Huang, Matthew Klein, Guy Miller, Theresa A. Zesiewicz

Research output: Contribution to conferencePresentation

Abstract

<p> <p id="x-x-x-x-x-docs-internal-guid-d140b171-beb1-3bb6-25c5-094dfea4eac4"> <strong> Objective: </strong> To assess the effects of EPI-743 in patients with Friedreich&rsquo;s Ataxia (FA) point mutations on neurologic function as measured by the Friedreich&rsquo;s Ataxia Rating Scale (FARS). </p> <p> <strong> Background: </strong> FA is an autosomal recessive degenerative disorder characterized by ataxia, dysarthria, sensory loss, diabetes, and cardiomyopathy. FA patients with a point mutation (FA-PM) carry an expanded GAA repeat on one allele and a point mutation/deletion on the other allele; this is a rare variant. The natural history of FA includes progressively deteriorating neurologic function with FARS worsening 3.55 points in 12 months and 6.16 points in 24 months. EPI-743 is a therapeutic being developed for treatment of patients with mitochondrial diseases and disorders of oxidative stress. </p> <p> <strong> Methods: </strong> Three patients with genetically confirmed FA-PM (G130V) were administered EPI-743 400mg PO TID for 18 months in an open-label study. Assessments were completed quarterly. Relative mean changes in FARS total and subscale scores from baseline to 6 and 18 months of treatment were calculated as change([percnt]) = ((meanX - mean0) / mean0 &times; 100) where X represents the time point. </p> <p> <strong> Results: </strong> After 6 months of treatment, total FARS score improved an average of 9[percnt] (baseline mean total FARS=64, 6m mean total FARS=58). While all subscales improved, bulbar and upper limb coordination sub-scales were most improved (bulbar mean improvement of 80[percnt] [from 0.83 to 0.17] and upper limb coordination 53[percnt] [from 3.17 to 1.5]). Mean improvements persisted at 18 months from baseline (FARS total: 6[percnt], bulbar subscale: 20[percnt], upper limb coordination: 37[percnt]), although they attenuated. No serious adverse events, including hematologic or cardiac, were observed. </p> <p> <strong> Conclusions: </strong> EPI-743 was associated with clinically significant improvement in neurological function in patients with FA-PM over 18 months. These findings support further study of EPI-743 in patients with FA due to point mutations. </p></p>
Original languageAmerican English
StatePublished - Apr 20 2016
EventAmerican Academy of Neurology Annual Meeting (AAN) -
Duration: Apr 23 2018 → …

Conference

ConferenceAmerican Academy of Neurology Annual Meeting (AAN)
Period04/23/18 → …

Keywords

  • Degenerative disorder
  • EPI-743
  • Friedreich’s Ataxia
  • Point mutations

DC Disciplines

  • Epidemiology
  • Medicine and Health Sciences
  • Public Health

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