raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:500166

SIN3-related intellectual disability syndrome due to a point mutation

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal dominant
Age of onset
Antenatal, Infancy, Neonatal
Status
active

This disease is described under Witteveen-Kolk syndrome

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSIN3-related intellectual disability syndrome due to a point mutation
frSyndrome de déficience intellectuelle associé à SIN3 dû à une mutation ponctuelle
deIntelligenzminderung-Syndrom, SIN3A-assoziiertes
esSíndrome de discapacidad intelectual asociado al gen SIN3A por una mutación puntual
itDisabilità intellettiva da mutazione puntiforme di SIN3A
nlSIN3A-gerelateerde intellectuele achterstand-syndroom door puntmutatie
ptSíndrome de perturbação do desenvolvimento intelectual por mutação pontual SIN3A-relacionada
plZespół niepełnosprawności intelektualnej uwarunkowany mutacją punktową SIN3A
csMentální retardace z bodové mutace SIN3A
ukSIN3-повязаний синдром інтелектуальної недостатності, зумовлений точковою мутацією
zhSIN3A点突变导致的智力障碍综合征
trNokta mutasyonu nedeniyle SIN3A ile zihinsel yetersizlik sendromu
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613406NTBTvalidated
ICD-10Q87.8NTBTattributedvalidated
MONDO0044700Evalidated
UMLSC5925038Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SIN3BDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:19354ENSG0000012751160777719p13.11SIN3 transcription regulator family member B33811806[PMID]
SIN3ADisease-causing germline mutation(s) inAssessedHGNC:19353ENSG0000016937560777615q24.2SIN3 transcription regulator family member A27399968[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

20 annotations · validated 2020-03-11
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001999Abnormal facial shape
HP:0410263Brain imaging abnormality
HP:0001256Intellectual disability, mild
Frequent (79-30%)
HP:0000924Abnormality of the skeletal system
HP:0000729Autistic behavior
HP:0040195Decreased head circumference
HP:0000365Hearing impairment
HP:0001382Joint hypermobility
HP:0032059Mild malformation of cortical development
HP:0002119Ventriculomegaly
Occasional (29-5%)
HP:0002500Abnormal cerebral white matter morphology
HP:0000164Abnormality of the dentition
HP:0030084Clinodactyly
HP:0000722Compulsive behaviors
HP:0002750Delayed skeletal maturation
HP:0006989Dysplastic corpus callosum
HP:0002213Fine hair
HP:0001808Fragile nails
HP:0001250Seizure
HP:0000736Short attention span

Run the differential on the 3 obligate / very frequent terms

Annotation source: 27399968[PMID]

7

Sources for this card