raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:314588

Distal triplication 15q syndrome

Synonyms: Distal tetrasomy 15q · Tetrasomy 15(q25-qter) · Tetrasomy 15q26 · Triplication 15q25-qter · Triplication 15q26

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Not applicable, Unknown
Age of onset
Infancy, Neonatal
Status
active

This disease is described under 15q overgrowth syndrome

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDistal triplication 15q syndromeDistal tetrasomy 15q · Tetrasomy 15(q25-qter) · Tetrasomy 15q26 · Triplication 15q25-qter · Triplication 15q26
frSyndrome de triplication distale 15qTriplication 15q25-qter · Triplication 15q26 · Tétrasomie 15(q25-qter) · Tétrasomie 15q26 · Tétrasomie distale 15q
deDistale Triplikation 15qDistal Tetrasomie 15q · Tetrasomie 15(q25-qter) · Tetrasomie 15q26
esSíndrome de triplicación terminal 15qTetrasomía 15(q25-qter) · Tetrasomía 15q26 · Tetrasomía terminal 15q · Triplicación 15q25-qter · Triplicación 15q26
itTriplicazione 15q distaleTetrasomia 15(q25-qter) · Tetrasomia 15q distale · Tetrasomia 15q26 · Triplicazione 15q25-qter · Triplicazione 15q26
nlDistale triplicatie 15q-syndroomDistale tetrasomie 15q · Tetrasomie 15(q25-qter) · Tetrasomie 15q26 · Triplicatie 15q25-qter · Triplicatie 15q26
ptTriplicação distal 15qTetrassomia 15(q25-qter) · Tetrassomia 15q26 · Tetrassomia distal 15q · Triplicação 15q25-qter · Triplicação 15q26
plZespół triplikacji dystalnej 15qTetrasomia 15(q25-qter) · Tetrasomia 15q26 · Triplikacja telomerowa 15q
csDistální tetrazomie 15qTetrazomie 15(q25-qter) · Tetrazomie 15q26
ukДистальна триплікація 15qДистальна тетрасомія 15q · Тетрасомія 15(q25-qter) · Тетрасомія 15q26 · Тріплікація 15q25-qter · Триплікація 15q26
zh15q远端四体15q25-末端四体
trDistal tetrazomi 15qTetrazomi 15q26 · Tetrazomi 15(q25-qter)
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614846Evalidated
ICD-10Q99.8NTBTattributedvalidated
MONDO0013918Evalidated
UMLSC3553858Evalidated

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

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families23 casesWorldwideCase(s)Validated24793337[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_24793337[PMID]

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

45 annotations · validated 2020-11-12
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001999Abnormal facial shape
HP:0001263Global developmental delay
HP:0001507Growth abnormality
HP:0000218High palate
Frequent (79-30%)
HP:0000929Abnormal skull morphology
HP:0000077Abnormality of the kidney
HP:0003517Birth length greater than 97th percentile
HP:0001363Craniosynostosis
HP:0000126Hydronephrosis
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0001520Large for gestational age
HP:0000369Low-set ears
HP:0000347Micrognathia
HP:0000278Retrognathia
HP:0001328Specific learning disability
HP:0000506Telecanthus
Occasional (29-5%)
HP:0000811Abnormal external genitalia
HP:0001627Abnormal heart morphology
HP:0011039Abnormal helix morphology
HP:0000766Abnormal sternum morphology
HP:0001166Arachnodactyly
HP:0001631Atrial septal defect
HP:0012385Camptodactyly
HP:0001131Corneal dystrophy
HP:0000378Cupped ear
HP:0001305Dandy-Walker malformation
HP:0010946Dilatation of the renal pelvis
HP:0001371Flexion contracture
HP:0100790Hernia
HP:0000085Horseshoe kidney
HP:0000034Hydrocele testis
HP:0000238Hydrocephalus
HP:0012304Hypoplastic aortic arch
HP:0001511Intrauterine growth retardation
HP:0002808Kyphosis
HP:0008551Microtia
HP:0002667Nephroblastoma
HP:0001643Patent ductus arteriosus
HP:0000113Polycystic kidney dysplasia
HP:0002089Pulmonary hypoplasia
HP:0002650Scoliosis
HP:0000407Sensorineural hearing impairment
HP:0000486Strabismus
HP:0003396Syringomyelia

Run the differential on the 4 obligate / very frequent terms

Annotation source: 22653535[PMID]_19133692[PMID]

7

Sources for this card