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2 OMIM references -
2 associated genes
7 signs/symptoms
COMMON GENES: 1
COMMON SIGNS: 1
2 associated genes
20 signs/symptoms
Isolated trigonocephaly
Pfeiffer syndrome type 1

FGFR1 FGFR1
FREM1 FGFR2


COMMON
GENES
FGFR1



Citations in the biomedical literature:


Isolated trigonocephaly
FGFR1 FREM1
Pfeiffer syndrome type 1
FGFR2



Isolated trigonocephaly
Pfeiffer syndrome type 1

Synonym(s):
- Non-syndromic metopic craniosynostosis

Synonym(s):
- Classic Pfeiffer 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 eye disease
- Rare genetic disease

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

Epidemiological data:
Class of prevalence: 1-9 / 100 000
Average age onset: neonatal/infancy
Average age of death: normal
Type of inheritance: autosomal dominant
Epidemiological data:
Class of prevalence: -
Average age onset: -
Average age of death: -
Type of inheritance: autosomal dominant

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


COMMON
SIGNS
- Autosomal dominant inheritance


Isolated trigonocephaly
Pfeiffer syndrome type 1

Very frequent
- Trigonocephaly

Frequent
- Broad nasal root
- Hypotelorism
- Prominent supraorbital ridge
- Synophris / synophrys

Occasional
- Omphalocele / exomphalos


Very frequent
- Brachycephaly / flat occiput
- Broad / bifid big toe
- Broad / bifid thumb
- Depressed nasal bridge
- High forehead
- High vaulted / narrow palate
- Hypertelorism
- Mid-facial hypoplasia / short / small midface
- Short big toe
- Short / small nose
- Thumb hypoplasia / aplasia / absence

Frequent
- Low set ears / posteriorly rotated ears
- Proptosis / exophthalmos
- Short foot / brachydactyly of toes
- Short hand / brachydactyly
- Syndactyly of fingers / interdigital palm
- Syndactyly of toes

Occasional
- Hearing loss / hypoacusia / deafness
- Stenosis of aqueduc of Sylvius