Gene Gene information from NCBI Gene database.
Entrez ID 3737
Gene name Potassium voltage-gated channel subfamily A member 2
Gene symbol KCNA2
Synonyms (NCBI Gene)
DEE32EIEE32HBK5HK4HUKIVKV1.2MK2NGK1RBK2
Chromosome 1
Chromosome location 1p13.3
Summary Potassium channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, e
SNPs SNP information provided by dbSNP.
20
SNP ID Visualize variation Clinical significance Consequence
rs200499541 C>T Conflicting-interpretations-of-pathogenicity Coding sequence variant, synonymous variant
rs371979518 T>C Conflicting-interpretations-of-pathogenicity Intron variant, coding sequence variant, synonymous variant
rs763353895 G>A Conflicting-interpretations-of-pathogenicity Stop gained, coding sequence variant
rs786205231 A>G Pathogenic Missense variant, coding sequence variant
rs786205232 C>T Pathogenic Missense variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
24
miRTarBase ID miRNA Experiments Reference
MIRT736888 hsa-miR-137 Luciferase reporter assayWestern blottingImmunofluorescenceqRT-PCR 32621322
MIRT1080220 hsa-miR-125a-3p CLIP-seq
MIRT1080221 hsa-miR-3138 CLIP-seq
MIRT1080222 hsa-miR-383 CLIP-seq
MIRT1080223 hsa-miR-3934 CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
84
GO ID Ontology Definition Evidence Reference
GO:0001508 Process Action potential IBA
GO:0005216 Function Monoatomic ion channel activity IEA
GO:0005249 Function Voltage-gated potassium channel activity IDA 11211111, 20220134, 23769686
GO:0005249 Function Voltage-gated potassium channel activity IEA
GO:0005249 Function Voltage-gated potassium channel activity IMP 19912772, 32833227, 35439054, 37883018
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
176262 6220 ENSG00000177301
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P16389
Protein name Potassium voltage-gated channel subfamily A member 2 (NGK1) (Voltage-gated K(+) channel HuKIV) (Voltage-gated potassium channel HBK5) (Voltage-gated potassium channel subunit Kv1.2)
Protein function Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes, primarily in the brain and the central nervous system, but also in the cardiovascular system. Prevents aberrant action potential firing and r
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF02214 BTB_2 35 126 BTB/POZ domain Domain
PF00520 Ion_trans 162 421 Ion transport protein Family
Tissue specificity TISSUE SPECIFICITY: Detected in brain cortex (PubMed:16473933). Detected in peroneal nerve in the juxtaparanodal regions of the node of Ranvier; expression is decreased in patients with diabetes mellitus that suffer from axonal neuropathy (PubMed:22649228
Sequence
Sequence length 499
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  Reactome
    Voltage gated Potassium channels
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
25
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Complex neurodevelopmental disorder Likely pathogenic; Pathogenic rs886041761 RCV005250046
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Developmental and epileptic encephalopathy, 1 Likely pathogenic; Pathogenic rs764822052, rs786205232 RCV001527627
RCV001252020
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Developmental and epileptic encephalopathy, 32 Pathogenic; Likely pathogenic rs2101396301, rs2101396443, rs2101398595, rs2101399429, rs2101403658, rs2524620540, rs2524618913, rs2524618796, rs2524616704, rs876657389, rs786205231, rs876657390, rs786205232, rs2524619990, rs2524623169
View all (20 more)
RCV001379013
RCV001379814
RCV001376941
RCV001382055
RCV001775358
View all (35 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Global developmental delay Likely pathogenic rs1342073847 RCV002463862
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Autism spectrum disorder Conflicting classifications of pathogenicity ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Clear cell carcinoma of kidney Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
DEVELOPMENTAL AND EPILEPTIC ENCEPHALOPATHY ClinGen
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
DEVELOPMENTAL AND EPILEPTIC ENCEPHALOPATHY 32 CTD, Disgenet, HPO
CTD, Disgenet, HPO
CTD, Disgenet, HPO
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Ataxia Ataxia Pubtator 25751627 Associate
★☆☆☆☆
Found in Text Mining only
Attention deficit hyperactivity disorder Attention Deficit Hyperactivity Disorder HPO_DG
★☆☆☆☆
Found in Text Mining only
Auditory Processing Disorder, Central Auditory processing disorder CTD_human_DG 25751627
★☆☆☆☆
Found in Text Mining only
Autistic Disorder Autism HPO_DG
★☆☆☆☆
Found in Text Mining only
Blepharoptosis Ptosis HPO_DG
★☆☆☆☆
Found in Text Mining only
Brain Diseases Brain disease Pubtator 25751627, 26648591, 28806589, 32540721, 33232902, 34576077 Associate
★☆☆☆☆
Found in Text Mining only
Cerebellar Ataxia Cerebellar ataxia Pubtator 34576077 Associate
★☆☆☆☆
Found in Text Mining only
Cerebellar Diseases Cerebellar diseases Pubtator 33802230 Associate
★☆☆☆☆
Found in Text Mining only
Cerebral atrophy Cerebral Atrophy HPO_DG
★☆☆☆☆
Found in Text Mining only
Clonic Seizures Clonic Seizures CTD_human_DG 25751627
★☆☆☆☆
Found in Text Mining only