raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:370079

Proximal 16p11.2 microduplication syndrome

Synonyms: Proximal dup(16)(p11.2) · Proximal trisomy 16p11.2

Type
Malformation syndrome
Group
Disorder
Age of onset
Infancy, Neonatal
Status
active

Proximal 16p11.2 microduplication syndrome is a rare chromosomal anomaly syndrome resulting from a partial duplication of the short arm of chromosome 16 characterized by developmental delay and intellectual disability of a highly variable degree, autism spectrum, obsessive-compulsive, attention deficit hyperactivity disorder, speech articulation abnormalities, muscular hypotonia, tremor, hyper- or hyporeflexia, seizures, microcephaly, neuroimaging abnormalities, decreased body mass index and schizophrenia or bipolar disorder later on in life.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enProximal 16p11.2 microduplication syndromeProximal dup(16)(p11.2) · Proximal trisomy 16p11.2
frSyndrome de microduplication 16p11.2 proximaleDup(16)(p11.2) proximale · Trisomie 16p11.2 proximale
deProximales Mikroduplikationssyndrom 16p11.2Dup(16)(p11.2), proximal · Trisomie 16p11.2, proximal
esSíndrome de microduplicación proximal 16p11.2Dup(16)(p11.2) proximal · Trisomía proximal 16p11.2
itSindrome da microduplicazione 16p11.2 prossimaleDup(16)(p11.2) prossimale · Trisomia 16p11.2 prossimale
nlProximale 16p11.2-microduplicatiesyndroomProximale dup(16)(p11.2) · Proximale trisomie 16p11.2
ptSíndrome de microduplicação proximal da região 16p11.2
plZespół mikroduplikacji proksymalnej 16p11.2Proksymalna dup(16)(p11.2) · Proksymalna trisomia 16p11.2
csProximální mikroduplikační syndrom 16p11.2Proximální dup(16)(p11.2) · Proximální trizomie 16p11.2
ukСиндром проксимальної мікродуплікації 16p11.2Проксимальна дуплікація (16)(p11.2) · Проксимальна трисомія 16p11.2
zh近端16p11.2微重复综合征近端16p11.2三体
trProksimal 16p11.2 mikroduplikasyon sendromuProksimal dup (16) (p11.2) · Proksimal trozimi 16p11.2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614671Evalidated
ICD-10Q92.3NTBTattributedvalidated
MONDO0013847Evalidated
UMLSC4707332Evalidated
GARD12388Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families21 casesWorldwideCase(s)Validated19914906[PMID]_19755429[PMID]_20959866[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated19914906[PMID]_19755429[PMID]_20959866[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

38 annotations · validated 2019-06-05
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012751Abnormal basal ganglia MRI signal intensity
HP:0001166Arachnodactyly
HP:0045082Decreased body mass index
HP:0000490Deeply set eye
HP:0000750Delayed speech and language development
HP:0001508Failure to thrive
HP:0012368Flat face
HP:0000316Hypertelorism
HP:0001265Hyporeflexia
HP:0001252Hypotonia
HP:0001249Intellectual disability
HP:0000252Microcephaly
HP:0008551Microtia
HP:0001270Motor delay
HP:0004322Short stature
HP:0000319Smooth philtrum
HP:0045075Sparse eyebrow
HP:0000653Sparse eyelashes
HP:0009088Speech articulation difficulties
HP:0000219Thin upper lip vermilion
HP:0001337Tremor
Frequent (79-30%)
HP:0030800Abnormal visual accommodation
HP:0000739Anxiety
HP:0007018Attention deficit hyperactivity disorder
HP:0000729Autistic behavior
HP:0000722Compulsive behaviors
HP:0001263Global developmental delay
Occasional (29-5%)
HP:0009553Abnormality of the hairline
HP:0000717Autism
HP:0007302Bipolar affective disorder
HP:0000776Congenital diaphragmatic hernia
HP:0002007Frontal bossing
HP:0100753Schizophrenia
HP:0002650Scoliosis
HP:0001250Seizure
HP:0009891Underdeveloped supraorbital ridges
Very rare (<4-1%)
HP:0002937Hemivertebrae
HP:0000054Micropenis

Run the differential on the 12 obligate / very frequent terms

Annotation source: 19755429[PMID]_19914906[PMID]

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Sources for this card