Abstract

The ALG13 gene encodes a subunit of the uridine diphosphate-N-acetylglucosamine (UDP-GlcNAc) transferase enzyme, which plays a key role in the N-linked glycosylation pathway. This pathway involves the attachment of carbohydrate structures to asparagine (Asn) residues in proteins within the endoplasmic reticulum, by which N-glycosylated proteins produced participate a wide range of processes such as electrical gradients formation and neurotransmission. Mutations in the ALG13 gene have been identified as a causative factor for congenital disorders of glycosylation (CDG) and have been frequently associated with epilepsy in affected individuals. Several studies have demonstrated a strong correlation between abnormal N-glycosylation due to ALG13 deficiency and the onset of epilepsy. Despite these findings, the precise role of ALG13 in the pathogenesis of epilepsy remains unclear. This review provides a comprehensive overview of the current literature on ALG13-related disorders, with a focus on recent evidence regarding its role in epilepsy development and progression. Future research directions are also proposed to further elucidate the molecular mechanisms underlying this association.

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