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1 OMIM reference -
1 associated gene
29 signs/symptoms
COMMON GENES: 1
COMMON SIGNS: 6
2 OMIM references -
2 associated genes
14 signs/symptoms
Crouzon syndrome - acanthosis nigricans
Isolated cloverleaf skull syndrome

FGFR3 ERF
FGFR3


COMMON
GENES
FGFR3



Citations in the biomedical literature:


Crouzon syndrome - acanthosis nigricans
FGFR3
Isolated cloverleaf skull syndrome
ERF



Crouzon syndrome - acanthosis nigricans
Isolated cloverleaf skull syndrome

Synonym(s):
- Crouzono-dermoskeletal syndrome

Synonym(s):
- Kleeblattschaedel syndrome

Classification (Orphanet):
- Rare bone disease
- Rare developmental defect during embryogenesis
- Rare eye disease
- Rare genetic disease
Classification (Orphanet):
- Rare bone disease
- Rare developmental defect during embryogenesis
- Rare genetic disease

Classification (ICD10):
- Congenital malformations, deformations and chromosomal abnormalities -
Classification (ICD10):
- Congenital malformations, deformations and chromosomal abnormalities -

Epidemiological data:
Class of prevalence: <1 / 1 000 000
Average age onset: neonatal/infancy
Average age of death: -
Type of inheritance: autosomal dominant
Epidemiological data:
Class of prevalence: unknown
Average age onset: neonatal/infancy
Average age of death: before age 5
Type of inheritance: sporadic

External references:
1 OMIM reference -
No MeSH references
External references:
2 OMIM references -
No MeSH references


COMMON
SIGNS
- Abnormal vertebral size / shape
- Autosomal dominant inheritance
- Beaked nose
- High forehead
- Mid-facial hypoplasia / short / small midface
- Proptosis / exophthalmos


Crouzon syndrome - acanthosis nigricans
Isolated cloverleaf skull syndrome

Very frequent
- Acanthosis nigricans
- Frontal bossing / prominent forehead

Frequent
- Arnold-Chiari anomaly
- Brachycephaly / flat occiput
- Cerebellum / cerebellar vermis anomaly / agenesis / hypoplasia
- Choanal atresia
- Chronic uveitis / blepharitis / episcleritis / scleritis / conjonctivitis / keratitis
- Conductive deafness / hearing loss
- Cranial hypertension
- Hydrocephaly
- Hypertelorism
- Hypoplastic maxillary bones / zygomatic bones / maxillary hypoplasia
- Metacarpal anomalies / Archibald's sign
- Ptosis
- Short hand / brachydactyly
- Strabismus / squint
- Turricephaly / oxycephaly / acrocephaly

Occasional
- Facial pain / cephalalgia / migraine
- High vaulted / narrow palate
- Optic nerve anomaly / optic atrophy / anomaly of the papilla
- Respiratory distress / dyspnea / respiratory failure / lung volume reduction
- Sacro-coccyx / sacrum anomaly
- Visual loss / blindness / amblyopia


Very frequent
- Depressed premaxillary region / midface
- Intellectual deficit / mental / psychomotor retardation / learning disability
- Low set ears / posteriorly rotated ears
- Stillbirth / neonatal death

Frequent
- Craniostenosis / craniosynostosis / sutural synostosis
- Dysostosis / chondrodysplasia / osteodysplasia / osteochondrosis / skeletal dysplasia
- Restricted joint mobility / joint stiffness / ankylosis
- Syndactyly of fingers / interdigital palm