raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:319182

Wiedemann-Steiner syndrome

Synonyms: Hypertrichosis-short stature-facial dysmorphism-developmental delay syndrome

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

A rare, genetic multiple congenital anomalies/dysmorphic syndrome characterized by short stature, hypertrichosis (most commonly of the back or elbow regions), facial dysmorphism, behavioral problems, developmental delay and, most commonly, mild to moderate intellectual disability.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enWiedemann-Steiner syndromeHypertrichosis-short stature-facial dysmorphism-developmental delay syndrome
frSyndrome de Wiedemann-SteinerSyndrome d'hypertrichose-petite taille-dysmorphie faciale-retard de développement
deWiedemann-Steiner-SyndromHypertrichose-Kleinwuchs-Gesichtsdysmorphie-Entwicklungsverzögerung-Syndrom
esSíndrome de Wiedemann-SteinerSíndrome de hipertricosis-talla baja-dismorfia facial-retraso del desarrollo
itSindrome di Wiedemann-SteinerSindrome ipertricosi-bassa statura-dismorfismi facciali-ritardo dello sviluppo
nlSyndroom van Wiedemann-SteinerHypertrichose - kleine gestalte - faciale dysmorfie - ontwikkelingsachterstand-syndroom
ptSíndrome Wiedemann-SteinerSíndrome de hipertricose-baixa estatura-dismorfia facial-atraso no desenvolvimento
plZespół Wiedemanna i SteineraZespół hipertrichoza-niski wzrost-dysmorfia twarzy-opóźnienie rozwoju
csWiedemannův-Steinerův syndromSyndrom zahrnující hypertrichózu, nízký vzrůst, faciální dysmorfismus a opoždění vývoje · Wiedemann-Steinerův syndrom
ukСиндром Відемана-ШтайнераСиндром гіпертрихозу - низькорослості - дизморфізму обличчя - затримки розвитку
zhWiedemann-Steiner综合征多毛-身材矮小-面部畸形-发育迟缓综合征
trWiedemann-Steiner sendromuHipertrikoz-kısa boy-fasiyal dismorfizm-gelişme geriliği sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM605130Evalidated
ICD-10Q87.1NTBTattributedvalidated
MONDO0011518Evalidated
UMLSC1854630Evalidated
GARD5565Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
KMT2ADisease-causing germline mutation(s) inAssessedHGNC:7132ENSG0000011805815955511q23.3lysine methyltransferase 2A22795537[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families84 casesWorldwideCase(s)Validatedftp://ftp.sanger.ac.uk/pub/resources/theses/wj1/
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_27777327[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

58 annotations · validated 2018-06-27
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000750Delayed speech and language development
Frequent (79-30%)
HP:0000733Abnormal repetitive mannerisms
HP:0009811Abnormality of the elbow
HP:0005616Accelerated skeletal maturation
HP:0000718Aggressive behavior
HP:0000739Anxiety
HP:0000708Atypical behavior
HP:0004540Congenital, generalized hypertrichosis
HP:0000824Decreased response to growth hormone stimulation test
HP:0002194Delayed gross motor development
HP:0002750Delayed skeletal maturation
HP:0002015Dysphagia
HP:0000324Facial asymmetry
HP:0011968Feeding difficulties
HP:0000752Hyperactivity
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0000527Long eyelashes
HP:0000343Long philtrum
HP:0000744Low frustration tolerance
HP:0008897Postnatal growth retardation
HP:0000311Round face
HP:0000736Short attention span
HP:0012745Short palpebral fissure
HP:0001182Tapered finger
HP:0000574Thick eyebrow
HP:0000219Thin upper lip vermilion
HP:0000431Wide nasal bridge
Occasional (29-5%)
HP:0001273Abnormal corpus callosum morphology
HP:0001155Abnormality of the hand
HP:0006712Aplasia/Hypoplasia of the ribs
HP:0030084Clinodactyly
HP:0004209Clinodactyly of the 5th finger
HP:0100581Dilatation of renal calices
HP:0000268Dolichocephaly
HP:0000286Epicanthus
HP:0001508Failure to thrive
HP:0012368Flat face
HP:0002020Gastroesophageal reflux
HP:0002230Generalized hirsutism
HP:0000348High forehead
HP:0000218High palate
HP:0010485Hyperextensibility at elbow
HP:0001249Intellectual disability
HP:0001511Intrauterine growth retardation
HP:0000369Low-set ears
HP:0000252Microcephaly
HP:0000767Pectus excavatum
HP:0002361Psychomotor deterioration
HP:0000508Ptosis
HP:0008905Rhizomelia
HP:0000960Sacral dimple
HP:0001250Seizure
HP:0003196Short nose
HP:0004322Short stature
HP:0000664Synophrys
HP:0000506Telecanthus
HP:0000465Webbed neck

Run the differential on the 1 obligate / very frequent terms

Annotation source: 29574747[PMID]_2738900[PMID]_2773989[PMID]_10826636[PMID]_12558109[PMID]_18019374[PMID]_20803650[PMID]_25810209[PMID]

7

Sources for this card