Gene
KCNH5
potassium voltage-gated channel subfamily H member 5
- HGNC 6254↗(opens in a new tab)
- Ensembl gene ENSG00000140015↗(opens in a new tab)
- NCBI Gene 27133↗(opens in a new tab)
Summary
- Cytogenetic location
- 14q23.2
- Coordinates
- Chromosome 14: 62,699,464–63,045,458 (GRCh38)
- Exons
- 11 exons across 346 kb
- Protein
- 988 amino acids
- Also known as
- Kv10.2, H-EAG2, eag2, hEAG2
- MANE Select transcript
- ENST00000322893.12NM_139318.5
- Locus type
- gene with protein product
- Very high
- Confident
- Low
- Very low
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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Epilepsy (Full Panel)
- Epilepsy
One of 171 genes linked to it
A brain disorder characterized by episodes of abnormally increased neuronal discharge resulting in transient episodes of sensory or motor neurological dysfunction, or psychic dysfunction. These episodes may or may not be associated with loss of consciousness or convulsions.
- ClinGen rates the link definitive
- 3 GenCC submitters rate it definitive or strong
How KCNH5 is laid out
- Coding sequence
- Untranslated region
- Intron
- Direction of transcription
- Known disease-causing sites
- Stretches short reads find hard
Exons of the gene's MANE Select transcript (release v1.5), from NCBI and EMBL-EBI, on the GRCh38 reference genome.
Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).
Nearby genes from Ensembl release 116, on GRCh38.
Exons make up 11.3 kb of the gene's 346 kb; 2,967 of those bases code for the protein.
How a genome test reads KCNH5
4
positions in KCNH5 where ClinVar classes a change as pathogenic or likely pathogenic
None of them falls in a region short reads find hard.
A whole genome covers all 346 kb of KCNH5, introns included, not only the 11.3 kb of exons.
Genes linked to the same conditions
- AARS1alanyl-tRNA synthetase 1Shares 1 condition
- ABAT4-aminobutyrate aminotransferaseShares 1 condition
- ACTL6Bactin like 6BShares 1 condition
- ADAM22ADAM metallopeptidase domain 22Shares 1 condition
- ALDH7A1aldehyde dehydrogenase 7 family member A1Shares 1 condition
- ALG13ALG13 UDP-N-acetylglucosaminyltransferase subunitShares 1 condition
- AP3B2adaptor related protein complex 3 subunit beta 2Shares 1 condition
- ARHGEF9Cdc42 guanine nucleotide exchange factor 9Shares 1 condition
- ARV1ARV1 fatty acid homeostasis modulatorShares 1 condition
- ARXaristaless related homeoboxShares 1 condition
- ATP1A2ATPase Na+/K+ transporting subunit alpha 2Shares 1 condition
- ATP1A3ATPase Na+/K+ transporting subunit alpha 3Shares 1 condition
Traits linked to KCNH5
The Human Phenotype Ontology lists these as features of the rare conditions KCNH5 can cause. Each trait's page lists the other genes linked to it.
Abnormality of the nervous system
- Attention deficit
- Autism spectrum disorder
- Clonic seizure
- Focal motor seizure
- Grand mal seizures
- Seizure affecting one half of brain
- Delayed speech and language development
- Encephalopathy
Show 38 more traits
- Epileptic encephalopathy
- Global developmental delay
- Abnormality of coordination
- Decreased reflex response
- EEG with multifocal slow activity
- Epilepsy
- Intellectual disability
- Loss of developmental milestones
- Motor delay
- Abnormal corpus callosum morphology
- Abnormal gait
- Abnormal myelination
- Ataxia
- Autism
- Behavioral abnormality
- Bilateral tonic-clonic seizure with focal onset
- Brain degeneration
- Chiari type I malformation
- Degeneration of cerebrum
- Delayed CNS myelination
- Diminished deep tendon reflex
- Disorder of involuntary muscle movements
- Focal aware motor seizure
- Focal impaired awareness motor seizure
- Focal tonic seizure
- Hyperintensity of cerebral white matter on MRI
- Hypsarrhythmia
- Impulsivity
- Infantile spasms
- Involuntary movements
- Jerking
- Mental deterioration
- Myoclonic seizure
- Repeated seizures without recovery between them
- Tremor
- Unsteady walk
- Brief seizures with staring spells
- Focal hemiclonic seizure
External links
Gene records
Transcript
Protein
Where this comes from
- HGNC: the gene's symbol, name, other symbols and location.
- MANE Select v1.5, from NCBI and EMBL-EBI: the transcript, its exons and coding sequence.
- GenCC and ClinGen, released 2026-10-16: which conditions the gene is linked to, and how strongly.
- The ACMG secondary findings list, SF v3.2.
- ClinVar and the GIAB stratifications: known disease-causing sites, and the regions short reads find hard.
- The Human Phenotype Ontology, release 2026-09-01: the traits linked to the gene. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
Cite this page
Dante Labs. (n.d.). KCNH5 gene: potassium voltage-gated channel subfamily H member 5. Retrieved 17 October 2026, from https://dantelabs.com/genes/kcnh5
Dante Labs. KCNH5 gene: potassium voltage-gated channel subfamily H member 5 [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/kcnh5
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