1. Genes and Genomic Entities
  2. KCNA2

KCNA2

potassium voltage-gated channel subfamily A member 2
OMIM: 176262, Gene2Phenotype

10 panels

Panel Reviews Mode of inheritance Details
10 panels
Green KCNA2 in Ataxia and cerebellar anomalies - childhood onset


Level 2: Neurology
Version 9.32
Latest signed off version: v9.22 (12 Aug 2026)

Component of the following Super Panels:

  • Hereditary ataxia and cerebellar anomalies, childhood onset

    		•  review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • NHS GMS
    • Expert Review Green
    • Expert list
    Phenotypes
    • Developmental and epileptic encephalopathy 32 OMIM:616366
    • developmental and epileptic encephalopathy, 32 MONDO:0014607
    Green KCNA2 in Hereditary spastic paraplegia, childhood onset


    Level 2: Neurology
    Version 9.11
    Latest signed off version: v9.7 (12 Aug 2026)

    		review MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
    Sources
    • Yorkshire and North East GLH
    • Expert Review Green
    • NHS GMS
    • London North GLH
    Phenotypes
    • hereditary spastic paraplegia and ataxia
    Green KCNA2 in Hereditary spastic paraplegia, adult onset


    Level 2: Neurology
    Version 6.14
    Latest signed off version: v6.13 (12 Aug 2026)

    Component of the following Super Panels:

  • Adult-onset neurological disorders

    		•  review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • Yorkshire and North East GLH
    • Expert Review Green
    • NHS GMS
    • London North GLH
    Phenotypes
    • Hereditary spastic paraplegia and ataxia
    Red KCNA2 in Fetal anomalies


    Level 2: Fetal (including NIPD)
    Version 8.5
    Latest signed off version: v8.0 (12 Aug 2026)

    		review MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
    Sources
    • Expert Review Red
    • PAGE DD-Gene2Phenotype
    Phenotypes
    • EPILEPTIC ENCEPHALOPATHY.
    Green KCNA2 in DDG2P


    Version 8.1
    Latest signed off version: v8.0 (12 Aug 2026)

    Component of the following Super Panels:

  • Paediatric disorders

    		•  review MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
    Sources
    • DD-Gene2Phenotype
    • Expert Review Green
    Phenotypes
    • EPILEPTIC ENCEPHALOPATHY Loss-of-function
    • EPILEPTIC ENCEPHALOPATHY Gain-of-function
    Green KCNA2 in Hereditary neuropathy

    Level 3: Motor and Sensory Disorders of the PNS
    Level 2: Neurology and neurodevelopmental disorders
    Version 1.513

    		review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • Expert Review Green
    • NHS GMS
    • London North GLH
    Phenotypes
    • Epileptic encephalopathy, early infantile, 32, 616366
    • Childhood onset spasticity, intellectual disability, ataxia, seizures, sensory and motor SNCV in one family
    Green KCNA2 in Early onset or syndromic epilepsy


    Level 2: Neurology
    Version 9.74
    Latest signed off version: v9.56 (12 Aug 2026)

    Component of the following Super Panels:

  • Paediatric disorders
  • Unexplained death in infancy and sudden unexplained death in childhood

    		•  review MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
    Sources
    • Wessex and West Midlands GLH
    • NHS GMS
    • Victorian Clinical Genetics Services
    • Expert Review Green
    • Expert Review
    Phenotypes
    • Developmental and epileptic encephalopathy 32 OMIM:616366
    • developmental and epileptic encephalopathy, 32 MONDO:0014607
    Green KCNA2 in Intellectual disability


    Level 2: Developmental disorders
    Version 11.28
    Latest signed off version: v11.0 (12 Aug 2026)

    Component of the following Super Panels:

  • Hypotonic infant
  • Leukodystrophy, childhood onset
  • Paediatric disorders

    		•  review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • Expert Review Green
    Phenotypes
    • EPILEPTIC ENCEPHALOPATHY.
    Green KCNA2 in Hereditary ataxia, adult onset


    Level 2: Neurology
    Version 9.11
    Latest signed off version: v9.4 (12 Aug 2026)

    Component of the following Super Panels:

  • Adult-onset neurological disorders

    		•  review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • Expert Review Green
    • NHS GMS
    • Wessex and West Midlands GLH
    Phenotypes
    • Early infantile encephalopathy 32, 616366
    Amber KCNA2 in Hereditary neuropathy or pain disorder


    Level 2: Neurology
    Version 8.32
    Latest signed off version: v8.30 (12 Aug 2026)

    		review MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
    Sources
    • Expert Review Amber
    • London North GLH
    • NHS GMS
    • NHS GMS
    • London North GLH
    Phenotypes
    • Epileptic encephalopathy, early infantile, 32, 616366
    • Childhood onset spasticity, intellectual disability, ataxia, seizures, sensory and motor SNCV in one family