raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:51577

Cobblestone lissencephaly

Synonyms: Lissencephaly type 2

Type
Clinical group
Group
Group of disorders
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare central nervous system malformation which includes a group of diseases that are characterized by a bumpy (or pebbled) appearance of the cerebral cortex, associated with a thickened cortex, reduction in normal sulcation, ventriculomegaly and reduced, abnormal white matter, as well as brainstem and cerebellum hypoplasia and corpus callosum agenesis. Patients generally present variable degrees of developmental delay, hypotonia and ocular abnomalities, however muscular and ocular involvement may be absent.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enCobblestone lissencephalyLissencephaly type 2
frLissencéphalie pavimenteuseLissencéphalie type 2
deCobblestone-LissenzephalieKopfsteinpflaster-Dysplasie · Lissenzephalie Typ 2
esLisencefalia en empedradoLisencefalia tipo 2
itLissencefalia con aspetto acciottolatoLissencefalia, tipo 2
nlCobblestone-lissencefalieLissencefalie type 2
ptLisencefalia tipo 2Lisencefalia com aspeto de seixo
plLizencefalia o typie kostki brukowejLizencefalia typu 2
csLissencefalie, typ 2Cobblestone lissencefalie
ukЛізенцефалія у вигляді бруківкиЛісенцефалія 2 типу
zh鹅卵石无脑回畸形无脑回畸形2型
trArnavut kaldırımı lizensefaliLizensefali tip 2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-11LD20.1NTBTindexvalidated
MONDO0018869Evalidated
MONDO18869Evalidated
MeSHD054222Evalidated
UMLSC0431376Evalidated
GARD3277Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

  • ORPHA:48471Lissencephaly
    rare developmental anomalies during embryogenesis; rare genetic diseases; rare neurological diseases

Children (2):

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Genes

0 direct

Orphanet records no gene directly on this code.

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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0001 / 100 000EuropeValue and classValidatedORPHANET
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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