raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:597743

SETD2-related microcephaly-severe intellectual disability-multiple congenital anomalies syndrome

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

A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by microcephaly, severe global developmental delay and intellectual disability, hypotonia, respiratory insufficiency, failure to thrive, and congenital anomalies affecting the skeleton, eyes, and several organ systems. Seizures and hearing loss are sometimes observed. Independent ambulation and meaningful speech are not attained. Common dysmorphic facial features include small forehead, biparietal narrowing, flat face, hypertelorism, arched eyebrows, short, upslanting palpebral fissures, wide nasal bridge, small, upturned nose, forward facing ears, and micrognathia. Brain imaging shows structural abnormalities in all patients.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSETD2-related microcephaly-severe intellectual disability-multiple congenital anomalies syndrome
frSyndrome de microcéphalie-déficience intellectuelle sévère-anomalies congénitales multiples associé à SETD2
deSETD2-assoziierte Mikrozephalie-schwere Intelligenzminderung-multiple kongenitale Anomalien-Syndrom
esSíndrome de microcefalia-discapacidad intelectual grave-anomalías congénitas múltiples asociado a SETD2
itSindrome da microcefalia, grave disabilità intellettiva e anomalie congenite multiple correlata a SETD2
nlSETD2-gerelateerd syndroom van microcefalie - ernstige intellectuele achterstand - multipele congenitale anomalieën
ptSíndrome de microcefalia-perturbação do desenvolvimento intelectual grave-anomalias congénitas múltiplas SETD2-relacionada
plZespół małogłowia, znacznej niepełnosprawności intelektualnej oraz mnogich wad wrodzonych związany z SETD2
csSyndrom zahrnující mikrocefalii, těžkou mentální retardaci a vícečetné vrozené vady související s SETD2
ukSETD2-повязаний синдром мікроцефалії-тяжкої розумової відсталості-множинних вроджених аномалій
zhSETD2-related microcephaly-severe intellectual disability-multiple congenital anomalies syndrome
trSETD2-related microcephaly-severe intellectual disability-multiple congenital anomalies syndrome

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM620155BTNTvalidated
OMIM620157BTNTvalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-11LD2F.1YNTBTattributedvalidated
MONDO0035706Evalidated
UMLSC5681587Evalidated

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 (6):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SETD2Disease-causing germline mutation(s) inAssessedHGNC:18420ENSG000001815556127783p21.31SET domain containing 2, histone lysine methyltransferase32710489[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated32710489[PMID]
Cases/families12 casesWorldwideCase(s)Validated32710489[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

Orphanet has no HPO annotation for this code in this release.

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Sources for this card