raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:716881

Congenital myasthenic syndrome due to a sodium channel 1.4 defect

Synonyms: CMS due to a sodium channel 1.4 defect · Na channel myasthenia · Sodium channel myasthenia

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Status
active

Orphadata ships no English definition for this code.

1

Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enCongenital myasthenic syndrome due to a sodium channel 1.4 defectCMS due to a sodium channel 1.4 defect · Na channel myasthenia · Sodium channel myasthenia
frSyndrome myasthénique congénital dû à une annomalie du canal sodium 1.4
deKongenitales myasthenes Syndrom durch Natriumkanal 1.4-DefektCMS durch Defekt des Natriumkanals 1.4 · Na-Kanal-Myasthenie · Natriumkanal-Myasthenie
esSíndrome miasténico congénito por defectos del canal de sodio 1.4Miastenia por el canal de Na · Miastenia por el canal de sodio · SMC por defecto del canal de sodio 1.4
itSindrome miastenica congenita da difetto del canale del sodio 1.4Miastenia correlata al canale Na · CMS da difetto del canale del sodio 1.4 · SMC da difetto del canale del sodio 1.4 · Miastenia correlata al canale del Na · Miastenia correlata al canale del sodio
nlCongenitaal myastheen syndroom door defect van natriumkanaal 1.4CMS door defect van natriumkanaal 1.4 · Myasthenie door natriumkanaal · Myasthenie door Na-kanaal
ptCongenital myasthenic syndromes due to a sodium channel 1.4 defect
plWrodzone zespoły miasteniczne spowodowane defektem kanału sodowego 1.4= en
csCongenital myasthenic syndrome due to a sodium channel 1.4 defect= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614198Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SCN4ADisease-causing germline mutation(s) inAssessedHGNC:10591ENSG0000000731460396717q23.3sodium voltage-gated channel alpha subunit 420301347[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card