Key result
Heteromeric functional current changes caused by KCNQ2 mutations, rather than homomeric current changes, are correlated with long-term neurodevelopmental outcomes in patients with neonatal-onset epileptic encephalopathy and benign familial neonatal convulsions.
Why the study?
Pediatric epilepsy caused by KCNQ2 mutations can manifest from benign familial neonatal convulsions to neonatal-onset epileptic encephalopathy with mild to profound neurodevelopmental disabilities, prompting investigation into phenotype correlations with functional current changes.
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May refine neurodevelopmental prognostication in KCNQ2-related neonatal epilepsies; leaves open whether functional assays should guide management.
Lee et al. (2020) studied KCNQ2-associated neonatal-onset seizures (n=4). KCNQ2 mutations (S247X, S247L, S247W, P285T) vs. Wild-type KCNQ2 was evaluated on Heteromeric functional current changes and correlation with neurodevelopmental outcomes. Heteromeric functional current changes caused by KCNQ2 mutations, rather than homomeric current changes, are correlated with long-term neurodevelopmental outcomes in patients with neonatal-onset epileptic encephalopathy and benign familial neonatal convulsions.
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