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1 OMIM reference -
1 associated gene
41 signs/symptoms
COMMON GENES: 1
COMMON SIGNS: 6
1 OMIM reference -
3 associated genes
38 signs/symptoms
Achondroplasia
Saethre-Chotzen syndrome

FGFR3 FGFR2
FGFR3
TWIST1


COMMON
GENES
FGFR3



Citations in the biomedical literature:


Achondroplasia
FGFR3
Saethre-Chotzen syndrome
FGFR2 TWIST1



Achondroplasia
Saethre-Chotzen syndrome

Synonym(s):
(no synonyms)

Synonym(s):
- ACS3
- Acrocephalosyndactyly type 3
- SCS

Classification (Orphanet):
- Rare bone disease
- Rare developmental defect during embryogenesis
- Rare genetic disease
Classification (Orphanet):
- Rare bone disease
- Rare developmental defect during embryogenesis
- Rare eye disease
- Rare genetic disease
- Rare oncologic 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: elderly
Type of inheritance: autosomal dominant
Epidemiological data:
Class of prevalence: 1-9 / 100 000
Average age onset: neonatal/infancy
Average age of death: normal
Type of inheritance: autosomal dominant

External references:
1 OMIM reference -
1 MeSH reference: D000130
External references:
1 OMIM reference -
No MeSH references


COMMON
SIGNS
- Abnormal vertebral size / shape
- Apnea / sleep apnea
- Autosomal dominant inheritance
- Conductive deafness / hearing loss
- Short hand / brachydactyly
- Short stature / dwarfism / nanism


Achondroplasia
Saethre-Chotzen syndrome

Very frequent
- Anomalies of the ribs
- Anteverted nares / nostrils
- Chronic / relapsing otitis
- Depressed nasal bridge
- Dysostosis / chondrodysplasia / osteodysplasia / osteochondrosis / skeletal dysplasia
- Frontal bossing / prominent forehead
- Genu varum
- Lordosis
- Macrocephaly / macrocrania / megalocephaly / megacephaly
- Metaphyseal anomaly
- Rhizomelic micromelia

Frequent
- Abnormal dentition / dental position / implantation / unerupted / dental ankylosis
- Bowed diaphysis / diaphyses / long bones
- Dilated cerebral ventricles without hydrocephaly
- Elbow anomalies(excluding luxation)
- Enlarged diaphysis / diaphyses
- Generalized obesity
- Hyperextensible joints / articular hyperlaxity
- Hyperhidrosis / increased sweating
- Hypotonia
- Intrauterine growth retardation
- Kyphosis
- Long rib cage / thorax
- Mid-facial hypoplasia / short / small midface
- Narrow rib cage / thorax
- Pelvis anomaly / Narrow / broad iliac wings / pubis abnormality

Occasional
- Acanthosis nigricans
- Collapse / sudden death / cardiac arrest / cardiorespiratory arrest
- Death in infancy
- Elbow dislocation
- Elocution disorders / dysarthria / dysphonia
- Hydrocephaly
- Rachidian / spine canal stenosis
- Restricted joint mobility / joint stiffness / ankylosis
- Speech troubles / aphasia / dysphasia / echolalia / mutism / logorrhea / dysprosodia


Very frequent
- Craniostenosis / craniosynostosis / sutural synostosis
- Facial structural asymmetry / facial hemiatrophy / facial hemihypertrophy
- Skull / cranial anomalies
- Syndactyly of fingers / interdigital palm

Frequent
- Beaked nose
- Dystonia / torticollis / writer's cramp / blepharospasms
- External auditory canal atresia / stenosis / agenesis
- External ear anomalies
- Helix / crux helix absent / abnormal / adherent / crux cymbae / posterior helix pits
- Hypertelorism
- Low hair line-front
- Microtia / cryptomicrotia / anotia / external auditory canal / pinnae aplasia / hypoplasia
- Ptosis
- Simian crease / transverse / unique palmar crease
- Strabismus / squint

Occasional
- Cleft palate without cleft lip / submucosal cleft palate / bifid uvula
- Congenital cardiac anomaly / malformation / cardiopathy
- Cranial hypertension
- Early death / lethality
- Facial pain / cephalalgia / migraine
- Hallux valgus
- Hearing loss / hypoacusia / deafness
- Hypoplastic maxillary bones / zygomatic bones / maxillary hypoplasia
- Intellectual deficit / mental / psychomotor retardation / learning disability
- Low set ears / posteriorly rotated ears
- Optic nerve anomaly / optic atrophy / anomaly of the papilla
- Radioulnar synostosis
- Scoliosis
- Seizures / epilepsy / absences / spasms / status epilepticus
- Sensorineural deafness / hearing loss
- Undescended / ectopic testes / cryptorchidia / unfixed testes
- Visual loss / blindness / amblyopia