raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:447974

Klippel-Feil anomaly-myopathy-facial dysmorphism syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy
Status
active

A rare genetic disease characterized by the association of Klippel-Feil anomaly (fusion of the cervical spine), myopathy, hypotonia, short stature, microcephaly, and facial dysmorphism (including low-set ears, bulbous nose, long philtrum, high-arched palate, and low posterior hairline, among others). Cardiac abnormalities and various skeletal anomalies (such as pectus excavatum or clinodactyly) have also been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enKlippel-Feil anomaly-myopathy-facial dysmorphism syndrome
frSyndrome de malformation de Klippel-Feil-myopathie-dysmorphie faciale
deKlippel-Feil-Anomalie-Myopathie-Gesichtsdysmorphie-Syndrom
esSíndrome de anomalía de Klippel-Feil-miopatía-dismorfia facial
itSindrome anomalia di Klippel-Feil-miopatia-dismorfismi facciali
nlKlippel-Feilanomalie - myopathie - faciale dysmorfie-syndroom
ptSíndrome de anomalia de Klippel-Feil-miopatia-dismorfia facial
plZespół anomalii Klippela i Feila, miopatii i dysmorfii twarzy
csSyndrom zahrnující Klippelovu-Feilovu anomálii, myopatii a faciální dysmorfismusSyndrom zahrnující Klippel-Feilovu anomálii, myopatii a faciální dysmorfismus
ukСиндром аномалії Кліппеля-Фейля-міопатії-дисморфізму обличчя
zh克-佩氏综合征
trKlippel-Feil anomalisi-miyopati-fasiyal dismorfizm sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM616549Evalidated
ICD-10Q76.1NTBTattributedvalidated
MONDO0014689Evalidated
UMLSC4225285Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MYO18BDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:18150ENSG0000013345460729522q12.1myosin XVIIIB25748484[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated25748484[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_25748484[PMID]

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