SCN2A Chromosome 2
Sodium voltage-gated channel alpha subunit 2
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What This Gene Does
Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with four repeat domains, each of which is composed of six membrane-spanning segments, and one or more regulatory beta subunits. Voltage-gated sodium channels function in the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family. Allelic variants of this gene are associated with seizure disorders and autism spectrum disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]
Gene Info
Gene Group
Sodium voltage-gated channel alpha subunits
Locus Type
gene with protein product
Location
2q24.3
Ensembl
ENSG00000136531
Associated Conditions (57)
Seizures
benign familial infantile
3
Developmental and epileptic encephalopathy
11
Inborn genetic diseases
SCN2A-mediated disorder
Intellectual disability
Complex neurodevelopmental disorder
Episodic ataxia
type 9
Genetic developmental and epileptic encephalopathy
SCN2A-related disorder
See cases
Seizure
Pyridoxine-dependent epilepsy
Febrile seizure (within the age range of 3 months to 6 years)
Self-limited epilepsy with centrotemporal spikes
Hemiplegia/hemiparesis
Spastic ataxia
+37 more conditions
Key Variants
RS1007052146
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS1008211605
Conflicting classifications of pathogenicity
Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy
Health Risk
RS1015952309
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS1057518048
Conflicting classifications of pathogenicity
Inborn genetic diseases, Developmental and epileptic encephalopathy, 11
Health Risk
RS1057518373
Conflicting classifications of pathogenicity
Developmental and epileptic encephalopathy, 11, Seizures
Health Risk
RS1057523786
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS1064795832
Conflicting classifications of pathogenicity
Health Risk
RS1064796373
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS1064797263
Conflicting classifications of pathogenicity
Developmental and epileptic encephalopathy, 11, Seizures
Health Risk
RS1131691951
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS115231482
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
RS1162322343
Conflicting classifications of pathogenicity
Seizures, benign familial infantile, 3
Health Risk
All Variants (674)
| RSID | Category | Clinical Significance | Conditions |
|---|---|---|---|
| RS1553463096 | Health Risk | Pathogenic | Complex neurodevelopmental disorder, SCN2A-related disorder, Complex neurodevelopmental disorder |
| RS1553463427 | Health Risk | Pathogenic | Episodic ataxia, type 9, Developmental and epileptic encephalopathy |
| RS1553463464 | Health Risk | Pathogenic | Inborn genetic diseases, Inborn genetic diseases |
| RS1553463516 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553463634 | Health Risk | Pathogenic | — |
| RS1553463635 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553463649 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553463772 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553564141 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553564144 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy |
| RS1553564213 | Health Risk | Pathogenic | Complex neurodevelopmental disorder, Complex neurodevelopmental disorder |
| RS1553564400 | Health Risk | Pathogenic | Inborn genetic diseases, Complex neurodevelopmental disorder, Inborn genetic diseases |
| RS1553567304 | Health Risk | Pathogenic | — |
| RS1553567381 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553567473 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy |
| RS1553567936 | Health Risk | Pathogenic | Inborn genetic diseases, Developmental and epileptic encephalopathy, 11 |
| RS1553567991 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553568004 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553568045 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy |
| RS1553568833 | Health Risk | Pathogenic | unclassified developmental and epileptic encephalopathy, Autism spectrum disorder, unclassified developmental and epileptic encephalopathy |
| RS1553568927 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553568970 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, Developmental and epileptic encephalopathy |
| RS1553568990 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, West syndrome, Developmental and epileptic encephalopathy |
| RS1553568995 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553569010 | Health Risk | Pathogenic | Benign familial infantile epilepsy, Benign familial infantile epilepsy |
| RS1553569023 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy |
| RS1553569054 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553569081 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553569087 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553569609 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553569659 | Health Risk | Pathogenic | Complex neurodevelopmental disorder, Developmental and epileptic encephalopathy, 11 |
| RS1553569662 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553569732 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Developmental and epileptic encephalopathy |
| RS1553569789 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553571901 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553574522 | Health Risk | Pathogenic | Self-limited epilepsy with centrotemporal spikes, Self-limited epilepsy with centrotemporal spikes |
| RS1553574729 | Health Risk | Pathogenic | — |
| RS1553574733 | Health Risk | Pathogenic | Inborn genetic diseases, Developmental and epileptic encephalopathy, 11 |
| RS1553579251 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553579305 | Health Risk | Pathogenic | Inborn genetic diseases, Complex neurodevelopmental disorder, Inborn genetic diseases |
| RS1553579500 | Health Risk | Pathogenic | — |
| RS1553579543 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553583544 | Health Risk | Pathogenic | Inborn genetic diseases, Developmental and epileptic encephalopathy, 11 |
| RS1553583550 | Health Risk | Pathogenic | — |
| RS1553583659 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553583712 | Health Risk | Pathogenic | Inborn genetic diseases, Inborn genetic diseases |
| RS1553584033 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553590192 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |
| RS1553590211 | Health Risk | Pathogenic | Seizures, benign familial infantile, 3 |
| RS1553591818 | Health Risk | Pathogenic | Developmental and epileptic encephalopathy, 11, Seizures |