Search results for "Voltage-gated potassium channels"

showing 2 items of 2 documents

A novel mutation in KCNQ3-related benign familial neonatal epilepsy: electroclinical features and neurodevelopmental outcome.

2019

Benign familial neonatal epilepsy (BFNE) is caused, in about 5% of families, by mutations in the KCNQ3 gene encoding voltage-gated potassium channel subunits. Usually, newborns with BFNE show a normal neurological outcome, but recently, refractory seizures and/or developmental disability have been reported suggesting phenotype variability associated with KCNQ3-related BFNE. Here, we describe a proband from a BFNE family carrying a novel variant in the KCNQ3 gene. Regarding the paucity of data in the literature, we describe the presented case with a view to further establishing: (1) a genotype/phenotype correlation in order to define a BFNE phenotype associated with favourable outcome; (2) a…

MaleGenotypeelectroclinical featureInfantElectroencephalographygenotype-phenotype correlationSettore MED/39 - Neuropsichiatria InfantileEpilepsy Benign NeonatalKCNQ3 Potassium ChannelKCNQSettore MED/38 - Pediatria Generale E SpecialisticaPhenotypevoltage-gated potassium channelsSettore M-PSI/08 - Psicologia ClinicaHumansbenign familial neonatal epilepsyEpileptic SyndromesEpileptic disorders : international epilepsy journal with videotape
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A novel KCNQ3 mutation in familial epilepsy with focal seizures and intellectual disability

2015

Mutations in the KCNQ2 gene encoding for voltage-gated potassium channel subunits have been found in patients affected with early onset epilepsies with wide phenotypic heterogeneity, ranging from benign familial neonatal seizures (BFNS) to epileptic encephalopathy with cognitive impairment, drug resistance, and characteristic electroencephalography (EEG) and neuroradiologic features. By contrast, only few KCNQ3 mutations have been rarely described, mostly in patients with typical BFNS. We report clinical, genetic, and functional data from a family in which early onset epilepsy and neurocognitive deficits segregated with a novel mutation in KCNQ3 (c.989G>T; p.R330L). Electrophysiological stu…

MaleGenotype-phenotype correlationmedicine.medical_specialtyNeurologyBenign familial neonatal seizuresMutantGenotype-phenotype correlationsmedicine.disease_causeMutagenesiKCNQ3 Potassium ChannelEpilepsyKCNQBenign Familial Neonatal Seizures KCNQ cognitive impairment voltage-gated potassium channels epilepsy mutagenesis genotype-phenotype correlationsSeizuresSettore M-PSI/08 - Psicologia ClinicaIntellectual DisabilityIntellectual disabilitymedicineHumansKCNQ2 Potassium ChannelVoltage-gated potassium channelBenign familial neonatal seizuresGenetic Predisposition to DiseaseGenetic TestingChildGenetic testingGeneticsMutationEpilepsymedicine.diagnostic_testGenetic heterogeneitybusiness.industryMedicine (all)Benign familial neonatal seizures; Cognitive impairment; Epilepsy; Genotype-phenotype correlations; KCNQ; Mutagenesis; Voltage-gated potassium channels; Child; Female; Genetic Testing; Humans; Intellectual Disability; KCNQ2 Potassium Channel; KCNQ3 Potassium Channel; Male; Mutation; Pedigree; Seizures; Genetic Predisposition to Disease; Neurology (clinical); Neurology; Medicine (all)Benign familial neonatal seizuremedicine.diseaseSeizureSettore MED/39 - Neuropsichiatria InfantilePedigreeCognitive impairmentNeurologyMutagenesisMutationFemaleNeurology (clinical)businessVoltage-gated potassium channelsHuman
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