raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:693912

EPHB4-related capillary malformation-arteriovenous malformation

Synonyms: CM-AVM2

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

A rare capillary malformation-arteriovenous malformation characterized by multifocal pink-to-red cutaneous capillary malformations, mainly localized on the extremities, trunk, head and neck. Bier spots, epistaxis, and telangiectasias on the lips, perioral region and on the upper thorax are frequently observed. Arteriovenous malformations and fistulas involving muscle, bone, the spine and the brain may also be present. Most patients are asymptomatic except for the capillary malformations, the family history is often positive for capillary malformations.

1

Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enEPHB4-related capillary malformation-arteriovenous malformationCM-AVM2
frMalformation capillaire-malformation artérioveineuse associées à EPHB4= en
deKapilläre Fehlbildung mit arteriovenöser Fehlbildung, EPHB4-assoziiert= en
esSíndrome de malformación capilar-malformación arteriovenosa asociado a EPHB4MC-MAV2
itMalformazione capillare-malformazione arterovenosa correlate a EPHB4= en
nlEPHB4-gerelateerde capillaire malformatie-arterioveneuze malformatie= en
ptMalformação capilar-arteriovenosa EPHB4-relacionada= en
plMalformacja naczyń włosowatych - malformacja tętniczo-żylna związana z EPHB4= en
csEPHB4-related capillary malformation-arteriovenous malformation= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM618196Evalidated
ICD-10Q27.3NTBTattributedvalidated
ICD-11LC50.YNTBTattributednot yet validated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
EPHB4Disease-causing germline mutation(s) inAssessedHGNC:3395ENSG000001964116000117q22.1EPH receptor B430760892[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families200 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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.

7

Sources for this card