raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:503

Larsen syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Antenatal, Infancy, Neonatal
Status
active

An orofacial clefting syndrome characterized by congenital dislocation of large joints, foot deformities, cervical spine dysplasia, scoliosis, spatula-shaped distal phalanges and distinctive craniofacial abnormalities, including cleft palate.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enLarsen syndrome
frSyndrome de Larsen
deLarsen-Syndrom
esSíndrome de Larsen
itSindrome di Larsen
nlSyndroom van Larsen
ptSíndrome Larsen
plZespół Larsena
csAutozomálně dominantní Larsenův syndrom
ukСиндром Ларсена
zhLarsen综合征
trLarsen sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM150250Evalidated
ICD-10Q74.8NTBTinclusionvalidated
ICD-11LD24.ENTBTindexvalidated
MONDO0007875Evalidated
MeSHC580241Evalidated
UMLSC0175778Evalidated
GARD6860Evalidated
MedDRA10073856Evalidated

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 (4):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FLNBDisease-causing germline mutation(s) inAssessedHGNC:3755ENSG000001360686033813p14.3filamin B
5

Prevalence and incidence

4 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.65 / 100 000FranceValue and classValidated22925539[PMID]
Point prevalence1-9 / 1 000 000—FranceClass onlyValidated22925539[PMID]
Prevalence at birth1-9 / 1 000 0000.4 / 100 000EuropeValue and classValidated[EXPERT]_EUROCAT European surveillance of congenital anomalies 2010[OTHER]
Point prevalence1-9 / 1 000 000—EuropeClass onlyValidated[EXPERT]_EUROCAT European surveillance of congenital anomalies 2010[OTHER]

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

27 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001156Brachydactyly
HP:0009836Broad distal phalanx of finger
HP:0011304Broad thumb
HP:0005280Depressed nasal bridge
HP:0012368Flat face
HP:0000316Hypertelorism
HP:0001382Joint hypermobility
HP:0005008Large joint dislocations
HP:0000272Malar flattening
HP:0011220Prominent forehead
HP:0009882Short distal phalanx of finger
HP:0001799Short nail
Frequent (79-30%)
HP:0004232Accessory carpal bones
Occasional (29-5%)
HP:0005930Abnormality of epiphysis morphology
HP:0001626Abnormality of the cardiovascular system
HP:0003319Abnormality of the cervical spine
HP:0000175Cleft palate
HP:0000405Conductive hearing impairment
HP:0001363Craniosynostosis
HP:0000028Cryptorchidism
HP:0006101Finger syndactyly
HP:0001249Intellectual disability
HP:0008755Laryngotracheomalacia
HP:0002093Respiratory insufficiency
HP:0002650Scoliosis
HP:0004322Short stature
HP:0003422Vertebral segmentation defect

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card