raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:207

Crouzon syndrome

Synonyms: Crouzon craniofacial dysostosis

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Antenatal, Infancy, Neonatal
Status
active

Crouzon disease is characterized by craniosynostosis and facial hypoplasia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enCrouzon syndromeCrouzon craniofacial dysostosis
frSyndrome de CrouzonDysostose craniofaciale de Crouzon
deCrouzon-SyndromDysostose, kraniofaziale, Typ Crouzon · Dysostosis Craniofacialis Crouzon
esSíndrome de CrouzonDisostosis craneofacial de Crouzon
itMalattia di CrouzonDisostosi craniofacciale di Crouzon
nlSyndroom van CrouzonCraniofaciale dysostose van Crouzon
ptSíndrome CrouzonDisostose cranio-facial Crouzon · Doença de Crouzon
plChoroba CrouzonaDyzostoza czaszkowo-twarzowa Crouzona · Zespół Crouzona
csCrouzonův syndromCrouzonova kraniofaciální dysostóza
ukСиндром КрузонаКраніофаціальний дизостоз Крузона
zh遗传性家族性颅面骨畸形Crouzon颅面骨骨发育不良
trCrouzon hastalığıCrouzon kraniyofasiyal disostoz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM123500Evalidated
ICD-10Q75.1NTBTinclusionvalidated
ICD-11LD24.G1Especificvalidated
MONDO0007405Evalidated
UMLSC0010273Evalidated
GARD6206Evalidated

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 (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FGFR2Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:3689ENSG0000006646817694310q26.13fibroblast growth factor receptor 220301628[PMID]
5

Prevalence and incidence

4 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.9 / 100 000EuropeValue and classValidatedEUROCAT European surveillance of congenital anomalies 2005-2012[OTHER]
Point prevalence1-9 / 1 000 000—EuropeClass onlyValidatedORPHANET_EUROCAT European surveillance of congenital anomalies 2005-2012[OTHER]
Point prevalence1-9 / 100 0001.65 / 100 000CanadaValue and classValidated1633640[PMID]
Prevalence at birth1-9 / 100 0002.6 / 100 000AustraliaValue and classValidated34626670[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

33 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001999Abnormal facial shape
HP:0000929Abnormal skull morphology
HP:0002007Frontal bossing
HP:0000348High forehead
HP:0011324Multiple suture craniosynostosis
Frequent (79-30%)
HP:0000248Brachycephaly
HP:0001321Cerebellar hypoplasia
HP:0002308Chiari malformation
HP:0000405Conductive hearing impairment
HP:0000509Conjunctivitis
HP:0000316Hypertelorism
HP:0000327Hypoplasia of the maxilla
HP:0002516Increased intracranial pressure
HP:0011800Midface retrusion
HP:0000520Proptosis
HP:0000508Ptosis
HP:0000486Strabismus
HP:0000262Turricephaly
Occasional (29-5%)
HP:0005107Abnormal sacrum morphology
HP:0000956Acanthosis nigricans
HP:0000646Amblyopia
HP:0000453Choanal atresia
HP:0000444Convex nasal ridge
HP:0002315Headache
HP:0000365Hearing impairment
HP:0000238Hydrocephalus
HP:0001053Hypopigmented skin patches
HP:0000612Iris coloboma
HP:0000995Melanocytic nevus
HP:0011386Narrow internal auditory canal
HP:0000189Narrow palate
HP:0000648Optic atrophy
HP:0002093Respiratory insufficiency

Run the differential on the 5 obligate / very frequent terms

7

Sources for this card