raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:289522

Microtriplication 11q24.1 syndrome

Synonyms: Tetrasomy 11q24.1

Type
Malformation syndrome
Group
Disorder
Age of onset
Childhood
Status
active

Microtriplication 11q24.1 is an extremely rare partial autosomal tetrasomy, resulting from a partial triplication of the long arm of chromosome 11, characterized by intellectual disability (with severe verbal impairment), short stature with small extremities, keratoconus and distinctive facial features (round, course face, upward slanting palpebral fissures, mild synophris, large nose with thick ala nasi and triangular tip, large mouth with broad lips, short and smooth philtrum, large protruded chin, ears with adherent lobules). Additionally, patients are overweight and present hypercholesterolemia.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMicrotriplication 11q24.1 syndromeTetrasomy 11q24.1
frSyndrome de microtriplication 11q24.1Tétrasomie 11q24.1
deMikrotriplikation 11q24.1Tetrasomie 11q24.1
esSíndrome de microtriplicación 11q24.1Tetrasomía 11q24.1
itSindrome microtriplicazione 11q24.1Tetrasomia 11q24.1
nlMicrotriplicatie 11q24.1-syndroomTetrasomie 11q24.1
ptMicrotriplicação 11q24.1Tetrassomia 11q24.1
plZespół mikrotriplikacji 11q24.1Tetrasomia 11q24.1
csMikrotriplikace 11q24.1Tetrazomie 11q24.1
ukМікротріплікація 11q24.1Тетрасомія 11q24.1
zh微三倍体11q24.111q24.1四体
trMikrotriplikasyon 11q24.1Tetrazomi 11q24.1

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q99.8NTBTattributedvalidated
MONDO0017335Evalidated
UMLSC4749373Evalidated

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 (3):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated21617255[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_21617255[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.

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HPO phenotypes

39 annotations · validated 2017-01-23
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001999Abnormal facial shape
HP:0009907Attached earlobe
HP:0011822Broad chin
HP:0003763Bruxism
HP:0004209Clinodactyly of the 5th finger
HP:0000280Coarse facial features
HP:0000750Delayed speech and language development
HP:0002857Genu valgum
HP:0002487Hyperkinetic movements
HP:0003077Hyperlipidemia
HP:0000316Hypertelorism
HP:0001249Intellectual disability
HP:0006316Irregularly spaced teeth
HP:0001373Joint dislocation
HP:0000563Keratoconus
HP:0001376Limitation of joint mobility
HP:0000527Long eyelashes
HP:0001840Metatarsus adductus
HP:0001513Obesity
HP:0000358Posteriorly rotated ears
HP:0001773Short foot
HP:0000322Short philtrum
HP:0004322Short stature
HP:0200055Small hand
HP:0000319Smooth philtrum
HP:0011098Speech apraxia
HP:0000664Synophrys
HP:0001762Talipes equinovarus
HP:0000574Thick eyebrow
HP:0000582Upslanted palpebral fissure
HP:0000445Wide nose
Frequent (79-30%)
HP:0000175Cleft palate
HP:0001290Generalized hypotonia
HP:0000365Hearing impairment
HP:0000252Microcephaly
HP:0006951Retrocerebellar cyst
HP:0002650Scoliosis
HP:0000470Short neck
Excluded (0%)
HP:0001250Seizure

Run the differential on the 12 obligate / very frequent terms

Annotation source: 21617255[PMID]

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Sources for this card