raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:306577

Hereditary sodium channelopathy-related small fibers neuropathy

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
No data available
Status
active

A rare, genetic, peripheral neuropathy disorder due to gain-of-function mutations in voltage-gated sodium channels present in the small peripheral nerve fibers characterized by neuropathic pain of varying intensity (often beginning in the distal extermities and with a burning quality) associated with autonomic dysfunction (e.g. orthostatic dizziness, palpitations, dry eyes and mouth), abnormal quantitative sensory testing, and reduction in intraepidermal nerve fiber density. Large fiber functions (i.e. normal strength, tendon reflexes, and vibration sense) and nerve conduction studies are typically normal.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHereditary sodium channelopathy-related small fibers neuropathy
frNeuropathie héréditaire des petites fibres due à une canalopathie sodique
deHereditäre Natrium-Ionenkanalkrankheit-assoziierte Small-Fiber-Neuropathie
esNeuropatía de fibras finas hereditaria ligada a canalopatías de sodio
itNeuropatia a piccole fibre correlata a canalopatia del sodio ereditaria
nlHereditaire natriumkanalopathie-gerelateerde dunnevezelneuropathie
ptNeuropatia de pequenas fibras relacionada com canalopatia do sódio hereditária
plDziedziczna neuropatia małym włókien związana z kanałopatią sodową
csNeuropatie malých vláken související s kanalopatií sodíkových kanálů
ukСпадкова нейропатія дрібних волокон, повязана з натрієвою каналопатією
zh钠离子通道相关小纤维神经病变
trSodyum kanalopatiye-ilişkili küçük lif nöropatisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM133020NTBTvalidated
OMIM615551BTNTvalidated
ICD-10G99.1NTBTattributednot yet validated
MONDO0017629Evalidated
UMLSC5925033Evalidated

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

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SCN10ADisease-causing germline mutation(s) (gain of function) inAssessedHGNC:10582ENSG000001853136044273p22.2sodium voltage-gated channel alpha subunit 1023115331[PMID]
SCN11ADisease-causing germline mutation(s) (gain of function) inAssessedHGNC:10583ENSG000001683566043853p22.2sodium voltage-gated channel alpha subunit 1124776970[PMID]
SCN9ADisease-causing germline mutation(s) (gain of function) inAssessedHGNC:10597ENSG000001694326034152q24.3sodium voltage-gated channel alpha subunit 921698661[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families8 casesWorldwideCase(s)Validated21698661[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

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

7

Sources for this card