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Related Experiment Video

Updated: Jul 9, 2025

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
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Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation

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Molecular and Cellular Context Influences SCN8A Variant Function.

Carlos G Vanoye, Tatiana V Abramova, Jean-Marc DeKeyser

    Biorxiv : the Preprint Server for Biology
    |November 28, 2023
    PubMed
    Summary
    This summary is machine-generated.

    Investigating SCN8A variants in neurodevelopmental disorders reveals that alternative splicing significantly impacts channel function. Understanding this context is crucial for accurate variant classification and disease association.

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    Area of Science:

    • Neuroscience
    • Molecular Biology
    • Genetics

    Background:

    • Pathogenic variants in SCN8A, encoding the NaV1.6 sodium channel, are linked to neurodevelopmental disorders like epileptic encephalopathy.
    • Previous functional studies of SCN8A variants may be limited by using neonatal splice variants or requiring engineered TTX-resistance mutations.

    Conclusions:

    • SCN8A alternative splicing critically influences the functional consequences of pathogenic variants.
    • The molecular and cellular context is essential for accurate interpretation of SCN8A variant function.
    • This study highlights the need to consider splice isoform expression when assessing SCN8A variants in neurodevelopmental disorders.