raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:716889

Congenital myasthenic syndrome due to defective axonal transport

Synonyms: Myosin 9a deficiency

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 axonal transportMyosin 9a deficiency
frSyndrome myasthénique congénital par défaut de transport axonal
deKongenitales myasthenes Syndrom durch Störung des axonalen TransportsMyosin 9a-Defizienz
esSíndrome miasténico congénito por defectos del transporte axonalDeficiencia de miosina 9a
itSindrome miastenica congenita dovuta a un difetto nel trasporto assonaleDeficit di miosina 9a
nlCongenitaal myastheen syndroom door defect van axonaal transportDeficiëntie van myosine 9a · CMS door defect van axonaal transport
ptCongenital myasthenic syndromes due to defective axonal transport
plWrodzone zespoły miasteniczne spowodowane defektem transportu aksonalnego= en
csCongenital myasthenic syndrome due to defective axonal transport= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM618198Evalidated

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
MYO9ADisease-causing germline mutation(s) inAssessedHGNC:7608ENSG0000006693360487515q23myosin IXA27259756[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