raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:171703

Microcephaly-polymicrogyria-corpus callosum agenesis syndrome

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

Microcephaly-polymicrogyria-corpus callosum agenesis syndrome is a rare, genetic, central nervous system malformation syndrome characterized by marked prenatal-onset microcephaly, severe motor delay with hypotonia, bilateral polymicrogyria, corpus callosum agenesis, ventricular dilation, small cerebellum and early lethality.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMicrocephaly-polymicrogyria-corpus callosum agenesis syndrome
frSyndrome de microcéphalie-polymicrogyrie-agénésie du corps calleux
deMicrozephalie - Polymikrogyrie - Corpus callosum-Agenesie
esSíndrome de microcefalia-polimicrogiria-agenesia del cuerpo calloso
itSindrome microcefalia, polimicrogiria e agenesia del corpo calloso
nlMicrocefalie - polymicrogyrie - agenesie van corpus callosum-syndroom
ptMicrocefalia - polimicrogiria - agenesia do corpo caloso
plMałogłowie - wielozakrętowość - agnezja ciała modzelowatego
csSyndrom zahrnující mikrocefalii, polymikrogyrii a agenezi corpus callosum
ukСиндром мікроцефалії-полімікрогірії-агенезії мозолистого тіла
zh小头畸形-多小脑回畸形-胼胝体发育不全综合征
trMikrosefali-polimikrogyria-korpus kallozum agenezisi sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q04.3NTBTattributedvalidated
MONDO0015745Evalidated
UMLSC4750772Evalidated

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
EOMESDisease-causing germline mutation(s) inAssessedHGNC:3372ENSG000001635086046153p24.1eomesodermin17353897[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families4 casesWorldwideCase(s)Validated17353897[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_17353897[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

7 annotations · validated 2019-09-13
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0001274Agenesis of corpus callosum
HP:0001321Cerebellar hypoplasia
HP:0002126Polymicrogyria
HP:0011451Primary microcephaly
HP:0002719Recurrent infections
HP:0002098Respiratory distress
HP:0002119Ventriculomegaly

Annotation source: 17353897[PMID]

7

Sources for this card