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    Alternating Hemiplegia of Childhood (AHC) is a rare neurological disease characterized by early-onset recurrent paroxysmal events and persistent neurological deficits. TBC1D24 gene variants have been associated with a phenotypic spectrum having epilepsy as the main clinical manifestation. Herein, we report the case of a child affected by developmental delay, polymorphic seizures, and nonepileptic episodes characterized by hemiplegia or bilateral plegia, pallor, hypotonia, and dystonic postures without loss of consciousness that resolved with sleep. Noteworthy, the patient fulfills all the diagnostic criteria for AHC. An epilepsy gene panel revealed a novel TBC1D24 mutation. This variant may be considered a PM5, according to the American College of Medical Genetics and Genomics guidelines. TBC1D24 gene variants are associated with various clinical features, and increasing data confirms the association with permanent and paroxysmal movement disorders. Our report suggests that the TBC1D24 molecular analysis could be considered in the diagnostic workup of AHC patients. Thieme. All rights reserved.


    Ramona Cordani, Livia Pisciotta, Maria Margherita Mancardi, Michela Stagnaro, Giulia Prato, Thea Giacomini, Giovanni Morana, Peter Walsh, Twinkle Ghia, Lino Nobili, Elisa De Grandis. Alternating Hemiplegia of Childhood in a Child Harboring a Novel TBC1D24 Mutation: Case Report and Literature Review. Neuropediatrics. 2022 Feb;53(1):69-74

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    PMID: 34852372

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