raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:228399

8q12 microduplication syndrome

Synonyms: Dup(8)(q12) · Trisomy 8q12

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable, Unknown
Age of onset
Infancy, Neonatal
Status
active

The newly described 8q12 microduplication syndrome is associated with unusual and characteristic multi-organ clinical features, which include hearing loss, congenital heart defects, intellectual disability, hypotonia in infancy, and Duane anomaly.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en8q12 microduplication syndromeDup(8)(q12) · Trisomy 8q12
frSyndrome de microduplication 8q12Dup(8)(q12) · Trisomie 8q12
deMikroduplikationssyndrom 8q12
esSíndrome de microduplicación 8q12Dup(8)(q12) · Trisomía 8q12
itSindrome da microduplicazione 8q12Dup(8)(q12) · Trisomia 8q12
nl8q12-microduplicatiesyndroomDup(8)(q12) · Trisomie 8q12
ptSíndrome de microdeleção 8q12
plZespół mikroduplikacji 8q12Dup(8)(q12) · Trisomia 8q12
csMikroduplikační syndrom 8q12Dup(8)(q12) · Trizomie 8q12
ukСиндром мікродуплікації 8q12Dup(8)(q12) · Трисомія 8q12
zh8q12微重复综合征8q12三体
tr8q12 mikroduplikasyon sendromuDup (8) (q12) · Trizomi 8q12

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q92.3NTBTattributedvalidated
ICD-11LD41.70NTBTindexvalidated
MONDO0016458Evalidated
UMLSC4304504Evalidated
GARD12816Evalidated

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 (3):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families4 casesWorldwideCase(s)Validated22902603[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

20 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0009921Duane anomaly
HP:0001263Global developmental delay
HP:0001252Hypotonia
HP:0000637Long palpebral fissure
HP:0000407Sensorineural hearing impairment
HP:0001629Ventricular septal defect
Frequent (79-30%)
HP:0001291Abnormal cranial nerve morphology
HP:0001631Atrial septal defect
HP:0007018Attention deficit hyperactivity disorder
HP:0000248Brachycephaly
HP:0000286Epicanthus
HP:0000232Everted lower lip vermilion
HP:0002020Gastroesophageal reflux
HP:0002553Highly arched eyebrow
HP:0000343Long philtrum
HP:0000160Narrow mouth
HP:0001773Short foot
HP:0000506Telecanthus
HP:0000076Vesicoureteral reflux
HP:0000431Wide nasal bridge

Run the differential on the 6 obligate / very frequent terms

7

Sources for this card