raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1727

22q11.2 duplication syndrome

Synonyms: 22q11.2 microduplication syndrome · Dup(22)(q11) · Duplication 22q11.2 · Trisomy 22q11.2

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
All ages
Status
active

A rare chromosomal anomaly characterized by an extremely variable clinical phenotype and may include heart defects, urogenital abnormalities, velopharyngeal insufficiency with or without cleft palate, and ranging from multiple defects to mild learning difficulties with some individuals being essentially normal.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en22q11.2 duplication syndrome22q11.2 microduplication syndrome · Dup(22)(q11) · Duplication 22q11.2 · Trisomy 22q11.2
frSyndrome de duplication 22q11.2Dup(22)(q11) · Duplication 22q11.2 · Syndrome de microduplication 22q11.2 · Trisomie 22q11.2
de22q11.2-Duplikationssyndrom22q11-Mikroduplikations-Syndrom · Dup(22)(q11) · Duplikation 22q11.2 · Trisomie 22q11.2 · dup22q11-Syndrom
esSíndrome de duplicación 22q11.2Dup(22)(q11) · Duplicación 22q11.2 · Síndrome de microduplicación 22q11.2 · Trisomía 22q11.2
itSindrome da duplicazione 22q11.2Dup22q11 · Duplicazione 22q11.2 · Trisomia 22q11.2
nl22q11.2-duplicatiesyndroom22q11.2-microduplicatiesyndroom · Dup(22)(q11) · Duplicatie 22q11.2 · Trisomie 22q11.2
ptSíndrome de duplicação 22q11.2Síndrome de microduplicação 22q11.2
plZespół mikroduplikacji 22q11.2Dup(22)(q11) · Duplikacja 22q11.2 · Trisomia 22q11.2
csMikroduplikační syndrom 22q11.2Dup(22)(q11) · Duplikace 22q11.2 · Trizomie 22q11.2
ukСиндром дуплікації 22q11.2Синдром мікродуплікації 22q11.2 · Dup(22)(q11) · Дуплікація 22q11.2 · Трисомія 22q11.2
zh22q11.2微重复综合征22q11.2重复
tr22q11.2 mikroduplikasyon sendromuDup (22) (q11) · Trizomi 22q11.2 · Duplikasyon 22q11.2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608363Evalidated
ICD-10Q92.3NTBTattributedvalidated
ICD-11LD41.MNTBTindexvalidated
MONDO0012020Evalidated
MeSHC567224Evalidated
UMLSC2675369Evalidated
GARD10557Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TBX1Role in the phenotype ofAssessedHGNC:11592ENSG0000018405860205422q11.21T-box transcription factor 119254783[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families216 casesWorldwideCase(s)Validated36735193[PMID]
Point prevalenceUnknown—WorldwideClass onlyValidated36735193[PMID]_ORPHANET

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

40 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0002167Abnormality of speech or vocalization
HP:0000600Abnormality of the pharynx
HP:0000175Cleft palate
HP:0000750Delayed speech and language development
HP:0000457Depressed nasal ridge
HP:0000494Downslanted palpebral fissures
HP:0000286Epicanthus
HP:0001263Global developmental delay
HP:0000348High forehead
HP:0001611Hypernasal speech
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0001249Intellectual disability
HP:0011800Midface retrusion
HP:0000275Narrow face
Occasional (29-5%)
HP:0000733Abnormal repetitive mannerisms
HP:0010978Abnormality of immune system physiology
HP:0009908Anterior creases of earlobe
HP:0000739Anxiety
HP:0010515Aplasia/Hypoplasia of the thymus
HP:0007018Attention deficit hyperactivity disorder
HP:0000717Autism
HP:0000722Compulsive behaviors
HP:0100627Displacement of the urethral meatus
HP:0001510Growth delay
HP:0000365Hearing impairment
HP:0000126Hydronephrosis
HP:0004383Hypoplastic left heart
HP:0011611Interrupted aortic arch
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000508Ptosis
HP:0002650Scoliosis
HP:0001250Seizure
HP:0000319Smooth philtrum
HP:0001636Tetralogy of Fallot
HP:0001669Transposition of the great arteries
HP:0008661Urethral stenosis
HP:0001629Ventricular septal defect
HP:0000445Wide nose
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Sources for this card