raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:261337

Distal 22q11.2 microduplication syndrome

Synonyms: Distal dup(22)(q11.2) · Distal trisomy 22q11.2

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

A rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome 22, with a highly variable phenotype principally characterized by developmental delay, intellectual disability, behavioral anomalies, and non-specific craniofacial dysmorphism. Congenital heart malformations, visual and hearing impairment, urogenital abnormalities, and seizures have also been reported. Penetrance is incomplete. In 70% of cases, the duplication is inherited from as asymptomatic parent.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDistal 22q11.2 microduplication syndromeDistal dup(22)(q11.2) · Distal trisomy 22q11.2
frSyndrome de microduplication 22q11.2 distaleDup(22)(q11.2) distale · Trisomie 22q11.2 distale
deMikroduplikationssyndrom 22q11.2, distalDup(22)(q11.2) · Trisomie 22q11.2, distal
esSíndrome de microduplicación terminal 22q11.2Dup(22)(q11.2) terminal · Trisomía terminal 22q11.2
itSindrome da microduplicazione 22q11.2 distaleDup(22)(q11.2) distale · Trisomia 22q11.2 distale
nlDistale 22q11.2-microduplicatiesyndroomDistale dup(22)(q11.2) · Distale trisomie 22q11.2
ptSíndrome de microduplicação distal 22q11.2Trissomia distal 22q11.2
plZespół mikroduplikacji dystalnej 22q11.2Dystalna dup(22)(q11.2) · Trisomia dystalna 22q11.2
csSyndrom distální mikroduplikace 22q11.2Distální dup(22)(q11.2) · Distální trizomie 22q11.2
ukСиндром дистальної мікродуплікації 22q11.2Дистальна дуплікація (22)(q11.2) · Дистальна трисомія 22q11.2
zh22q11.2远端微重复综合征22q11.2远端三体
trDistal 22q11.2 mikroduplikasyon sendromuDistal dup (22) (q11.2) · Distal trizomi 22q11.2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q92.3NTBTattributedvalidated
ICD-11LD41.MNTBTindexvalidated
MONDO0016846Evalidated
UMLSC4706942Evalidated

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 (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

57 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Occasional (29-5%)
HP:0011039Abnormal helix morphology
HP:0100022Abnormality of movement
HP:0009738Abnormality of the antihelix
HP:0002023Anal atresia
HP:0007018Attention deficit hyperactivity disorder
HP:0004422Biparietal narrowing
HP:0009795Branchial fistula
HP:0000337Broad forehead
HP:0000414Bulbous nose
HP:0100490Camptodactyly of finger
HP:0001836Camptodactyly of toe
HP:0000280Coarse facial features
HP:0000028Cryptorchidism
HP:0000490Deeply set eye
HP:0000457Depressed nasal ridge
HP:0000494Downslanted palpebral fissures
HP:0001260Dysarthria
HP:0001618Dysphonia
HP:0000286Epicanthus
HP:0002007Frontal bossing
HP:0001263Global developmental delay
HP:0000218High palate
HP:0000238Hydrocephalus
HP:0000316Hypertelorism
HP:0001800Hypoplastic toenails
HP:0001252Hypotonia
HP:0001249Intellectual disability
HP:0002463Language impairment
HP:0000343Long philtrum
HP:0002162Low posterior hairline
HP:0000369Low-set ears
HP:0000256Macrocephaly
HP:0000158Macroglossia
HP:0000303Mandibular prognathia
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000588Optic disc coloboma
HP:0100540Palpebral edema
HP:0001643Patent ductus arteriosus
HP:0000411Protruding ear
HP:0000960Sacral dimple
HP:0002650Scoliosis
HP:0001250Seizure
HP:0000322Short philtrum
HP:0000319Smooth philtrum
HP:0000486Strabismus
HP:0001182Tapered finger
HP:0012471Thick vermilion border
HP:0001770Toe syndactyly
HP:0000325Triangular face
HP:0005180Tricuspid regurgitation
HP:0001704Tricuspid valve prolapse
HP:0000122Unilateral renal agenesis
HP:0000582Upslanted palpebral fissure
HP:0001629Ventricular septal defect
HP:0000465Webbed neck
HP:0000445Wide nose
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Sources for this card