raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:716893

Congenital myasthenic syndrome due to defective synthesis or recycling of acetylcholine

Synonyms: CMS due to defective synthesis or recycling of ACh

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 defective synthesis or recycling of acetylcholineCMS due to defective synthesis or recycling of ACh
frSyndrome myasthénique congénital dû à un défaut de synthèse ou de recyclage de l'acétylcholine
deKongenitales myasthenes Syndrom durch gestörte Synthese oder gestörtes Recycling von AcetylcholinKongenitales Myastheniesyndrom durch gestörte Synthese oder Wiederverwertung von ACh
esSíndrome miasténico congénito por defectos de la síntesis o reciclaje de acetilcolinaSMC por defectos de la síntesis o reciclaje de Ach
itSindrome miastenica congenita da difetti nella sintesi o nel riciclo dell'acetilcolinaCMS da difetti nella sintesi o nel riciclo dell'Ach · SMC da difetti nella sintesi o nel riciclo di ACh
nlCongenitaal myastheen syndroom door defect van synthese of recycling van acetylcholineCMS door defect van synthese of recycling van ACh
ptCongenital myasthenic syndromes due to defective synthesis or recycling of acetylcholine
plWrodzone zespoły miasteniczne spowodowane defektem syntezy lub recyklingu acetylocholiny= en
csCongenital myasthenic syndrome due to defective synthesis or recycling of acetylcholine= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM254210BTNTvalidated
OMIM616224BTNTvalidated
OMIM617143BTNTvalidated
OMIM617239BTNTvalidated

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

4 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SLC5A7Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:14025ENSG000001156656087612q12.3solute carrier family 5 member 727569547[PMID]
CHATDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:1912ENSG0000007074811849010q11.23choline O-acetyltransferase20301347[PMID]
PREPLDisease-causing germline mutation(s) inAssessedHGNC:30228ENSG000001380786095572p21prolyl endopeptidase like24610330[PMID]_28726805[PMID]
SLC18A3Disease-causing germline mutation(s) inAssessedHGNC:10936ENSG0000018771460033610q11.23solute carrier family 18 member A327590285[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