raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98889

Bilateral perisylvian polymicrogyria

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

Orphadata ships no English definition for this code.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enBilateral perisylvian polymicrogyria
frPolymicrogyrie bilatérale périsylvienne
dePolymikrogyrie, bilaterale perisylvische
esPolimicrogiria perisilviana bilateral
itPolimicrogiria perisilviana bilaterale
nlBilaterale perisylvische polymicrogyrie
ptPolimicrogiria, bilateral, perisilviana
plObustronna drobnozakrętowość okołosylwialna
csBilaterální perisylviální polymikrogyrie
ukДвостороння перисильвіозна полімікрогірія
zh双侧脑外侧裂多微小脑回
trBilateral perisylvian polimikrogri
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300388BTNTvalidated
OMIM615752BTNTvalidated
OMIM616531BTNTvalidated
ICD-10Q04.3NTBTattributedvalidated
ICD-11LA05.50NTBTindexvalidated
MONDO0020340Evalidated
UMLSC1845668Evalidated
GARD6011Evalidated

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.

Codes that Orphanet moved or referred to this one:

4

Genes

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SRPX2Candidate gene tested inNot yet assessedHGNC:30668ENSG00000102359300642Xq22.1sushi repeat containing protein X-linked 216497722[PMID]
ADGRG1Disease-causing germline mutation(s) inAssessedHGNC:4512ENSG0000020533660411016q21adhesion G protein-coupled receptor G124531968[PMID]
PI4KADisease-causing germline mutation(s) inAssessedHGNC:8983ENSG0000024197360028622q11.21phosphatidylinositol 4-kinase alpha25855803[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

49 annotations · validated 2020-09-24
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002269Abnormality of neuronal migration
HP:0032407Bilateral perisylvian polymicrogyria
Frequent (79-30%)
HP:0000750Delayed speech and language development
HP:0005684Distal arthrogryposis
HP:0012014EEG with central focal spikes
HP:0012017EEG with parietal focal spikes
HP:0002392EEG with polyspike wave complexes
HP:0001371Flexion contracture
HP:0008947Floppy infant
HP:0007359Focal-onset seizure
HP:0001263Global developmental delay
HP:0001347Hyperreflexia
HP:0001249Intellectual disability
HP:0002463Language impairment
HP:0020190Perisylvian predominant thick cortex pachygyria
HP:0001250Seizure
HP:0001257Spasticity
HP:0001328Specific learning disability
HP:0030319Weakness of facial musculature
Occasional (29-5%)
HP:0410011Abnormality of masticatory muscle
HP:0002104Apnea
HP:0002835Aspiration
HP:0007033Cerebellar dysplasia
HP:0001320Cerebellar vermis hypoplasia
HP:0000453Choanal atresia
HP:0002307Drooling
HP:0001260Dysarthria
HP:0001310Dysmetria
HP:0002015Dysphagia
HP:0012015EEG with frontal focal spikes
HP:0011755Ectopic posterior pituitary
HP:0001349Facial diplegia
HP:0011968Feeding difficulties
HP:0011157Focal sensory seizure
HP:0002020Gastroesophageal reflux
HP:0000365Hearing impairment
HP:0012469Infantile spasms
HP:0001511Intrauterine growth retardation
HP:0002509Limb hypertonia
HP:0002061Lower limb spasticity
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000639Nystagmus
HP:0007301Oromotor apraxia
HP:0002385Paraparesis
HP:0000767Pectus excavatum
HP:0010808Protruding tongue
HP:0007024Pseudobulbar paralysis
HP:0002510Spastic tetraplegia

Run the differential on the 2 obligate / very frequent terms

Annotation source: 19559633[PMID]_30680716[PMID]_24888723[PMID]_27625275[PMID]_21273507[PMID]

7

Sources for this card