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Publication Detail
Loss-of-Function Mutations in FRRS1L Lead to an Epileptic-Dyskinetic Encephalopathy
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Madeo M, Stewart M, Sun Y, Sahir N, Wiethoff S, Chandrasekar I, Yarrow A, Rosenfeld JA, Yang Y, Cordeiro D, McCormick EM, Muraresku CC, Jepperson TN, McBeth LJ, Seidahmed MZ, El Khashab HY, Hamad M, Azzedine H, Clark K, Corrochano S, Wells S, Elting MW, Weiss MM, Burn S, Myers A, Landsverk M, Crotwell PL, Waisfisz Q, Wolf NI, Nolan PM, Padilla-Lopez S, Houlden H, Lifton R, Mane S, Singh BB, Falk MJ, Mercimek-Mahmutoglu S, Bilguvar K, Salih MA, Acevedo-Arozena A, Kruer MC
  • Publication date:
    02/06/2016
  • Pagination:
    1249, 1255
  • Journal:
    American Journal of Human Genetics
  • Volume:
    98
  • Issue:
    6
  • Status:
    Published
  • Print ISSN:
    0002-9297
Abstract
© 2016 American Society of Human Genetics.Glutamatergic neurotransmission governs excitatory signaling in the mammalian brain, and abnormalities of glutamate signaling have been shown to contribute to both epilepsy and hyperkinetic movement disorders. The etiology of many severe childhood movement disorders and epilepsies remains uncharacterized. We describe a neurological disorder with epilepsy and prominent choreoathetosis caused by biallelic pathogenic variants in FRRS1L, which encodes an AMPA receptor outer-core protein. Loss of FRRS1L function attenuates AMPA-mediated currents, implicating chronic abnormalities of glutamatergic neurotransmission in this monogenic neurological disease of childhood.
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