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20p12.3 microdeletion syndrome

1 associated gene
24 signs/symptoms

PROTEIN INTERACTIONS: 1
COMMON SIGNS: 3

Achondrogenesis type 2

1 OMIM reference -
1 associated gene
25 signs/symptoms

20p12.3 microdeletion syndrome

Achondrogenesis type 2

(UniProt - OMIM)

(UniProt - OMIM)


INTERACTOME ASSOCIATIONS (click on a score value to see the evidence)	BMP2	(0.79)	COL2A1

Citations in the biomedical literature:

20p12.3 microdeletion syndrome		Achondrogenesis type 2
	Synonym(s): - Del(20)(p12.3) - Monosomy 20p12.3		Synonym(s): - Achondrogenesis, Langer-Saldino type

	Classification (Orphanet): - Rare developmental defect during embryogenesis - 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: sporadic		Epidemiological data: Class of prevalence: unknown Average age onset: neonatal/infancy Average age of death: - Type of inheritance: autosomal dominant

	External references: No OMIM references No MeSH references		External references: 1 OMIM reference - 1 MeSH reference: C536017


COMMON SIGNS	- Long philtrum - Macrocephaly / macrocrania / megalocephaly / megacephaly - Short stature / dwarfism / nanism

20p12.3 microdeletion syndrome		Achondrogenesis type 2
	Very frequent - Hypertelorism - Insterstitial / subtelomeric microdeletion / deletion - Intellectual deficit / mental / psychomotor retardation / learning disability Frequent - Cardiac conduction defect / sinoauricular / heart / auriculoventricular / branch block - Downslanted palpebral fissures / anti-mongoloid slanting palpebral fissures - Epicanthic folds - Flat cheek bones / malar hypoplasia - Hypoplastic maxillary bones / zygomatic bones / maxillary hypoplasia - Microstomia / little mouth Occasional - Atrial septal defect / interauricular communication - Broad cheeks / cherub-like / cherubin face - Broad nasal root - Broad nose / nasal bridge - Broad / bifid big toe - Broad / bifid thumb - Dilated cerebral ventricles without hydrocephaly - Helix thickened / sculpted - Hypotonia - Microtia / cryptomicrotia / anotia / external auditory canal / pinnae aplasia / hypoplasia - Pectus carinatum - Seizures / epilepsy / absences / spasms / status epilepticus		Very frequent - Abnormal / absent ossification - Anteverted nares / nostrils - Autosomal dominant inheritance - Dysostosis / chondrodysplasia / osteodysplasia / osteochondrosis / skeletal dysplasia - Excess nuchal skin without pterygium colli - Flat face - Frontal bossing / prominent forehead - Hydrops fetalis - Hypoplastic lungs / pulmonary hypoplasia / agenesis - Micrognathia / retrognathia / micrognathism / retrognathism - Narrow rib cage / thorax - Short limbs / micromelia / brachymelia - Short neck - Short rib cage / thorax - Short / small nose - Stillbirth / neonatal death Frequent - Inguinal / inguinoscrotal / crural hernia - Polyhydramnios - Umbilical hernia Occasional - Congenital cardiac anomaly / malformation / cardiopathy - Cystic hygroma - Postaxial polydactyly (hand)