raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:568051

GJC2-related late-onset primary lymphedema

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Adult, Childhood
Status
active

A rare genetic primary lymphedema characterized by lymphedema of all four limbs with age of onset ranging from birth to adulthood. Manifestations are of variable severity, and upper limb involvement may develop only later in the disease course. Recurrent episodes of cellulitis and skin infections are observed in severe cases. Varicose veins and venous incompetence have been reported in association.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enGJC2-related late-onset primary lymphedema
frLymphoedème primaire tardif associé à GJC2
deGJC2-assoziiertes spät-beginnendes primäres Lymphödem
esLinfedema primario de inicio tardío asociado al gen GJC2
itLinfedema primitivo ad esordio tardivo correlato a GJC2
nlGJC2-gerelateerd primair lymfoedeem met late aanvang
ptLinfedema primário de início tradio GJC2-relacionado
plObrzęk limfatyczny o późnym początku związany z GJC2
csGJC2-vázaný primární lymfedém s pozdním nástupem
ukПізня первинна лімфедема, повязана з GJC2, з пізнім початком
zhGJC2基因相关的晚发型原发性淋巴水肿
trGJC2-ilişkili geç başlangıçlı primer lenfödem

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613480Evalidated
ICD-10Q82.0NTBTattributedvalidated
MONDO0035472Evalidated
UMLSC5681305Evalidated

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
GJC2Disease-causing germline mutation(s) inAssessedHGNC:17494ENSG000001988356088031q42.13gap junction protein gamma 229906362[PMID]_20537300[PMID]
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET_29906362[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

13 annotations · validated 2021-06-30
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0100766Abnormal lymphatic vessel morphology
HP:0001785Ankle swelling
HP:0003759Hypoplasia of lymphatic vessels
HP:0010741Pedal edema
HP:0003550Predominantly lower limb lymphedema
Occasional (29-5%)
HP:0100658Cellulitis
HP:0007514Edema of the dorsum of hands
HP:0000282Facial edema
HP:0001581Recurrent skin infections
HP:0002619Varicose veins
HP:0005293Venous insufficiency
Very rare (<4-1%)
HP:0031188Genital edema
HP:0000508Ptosis

Annotation source: 21266381[PMID]_20537300[PMID]_30061138[PMID]

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Sources for this card