raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:99796

Subcortical band heterotopia

Synonyms: Subcortical laminar heterotopia

Type
Morphological anomaly
Group
Disorder
Inheritance
Autosomal recessive, Unknown, X-linked recessive
Status
active

A rare, non-syndromic cerebral malformation due to abnormal neuronal migration characterized by variable clinical manifestation depending on the location, size and thickness of subcortical bands. Clinical presentation ranges from mild cognitive deficit to developmental delay with severe intellectual disability, seizures and behavioral problems.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSubcortical band heterotopiaSubcortical laminar heterotopia
frHétérotopie sous-corticale en bandesHétérotopie laminaire sous-corticale
deBandheterotopie, subkortikaleSubkortikale laminare Heterotopie (SCLH)
esHeterotopia subcortical en bandaHeterotopia subcortical laminar
itEterotopia a banda sottocorticaleEterotopia laminare sottocorticale
nlSubcorticale bandheterotopieSubcorticale laminaire heterotopie
ptHeterotopia subcortical em banda
plPodkorowa heterotopia linijnaPodkorowa heterotopia warstwowa
csSubkortikální pruhovitá heterotopieSubkortikální laminární heterotopie
ukПідкіркова смугова гетеротопіяПідкіркова ламінарна гетеротопія
zh皮层下带状灰质异位症皮质下板层异位
trSubkortikal bant heterotopisiSubkortikal laminer heterotopya

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300067NTBTvalidated
OMIM600348BTNTvalidated
OMIM607432NTBTvalidated
ICD-10Q04.3NTBTattributedvalidated
ICD-11LD20.1NTBTindexvalidated
MONDO0020491Evalidated
UMLSC1848201Evalidated
GARD1904Evalidated

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

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DCXDisease-causing germline mutation(s) inAssessedHGNC:2714ENSG00000077279300121Xq23doublecortin
EML1Disease-causing germline mutation(s) inAssessedHGNC:3330ENSG0000006662960203314q32.2EMAP like 124859200[PMID]
PAFAH1B1Disease-causing somatic mutation(s) inAssessedHGNC:8574ENSG0000000716860154517p13.3platelet activating factor acetylhydrolase 1b regulatory subunit 120301752[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

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

7

Sources for this card