raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:101089

Hyper-IgM syndrome type 2

Synonyms: AID deficiency · Activation-induced cytidine deaminase deficiency · HIGM2

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Status
active

This disease is described under Hyper-IgM syndrome without susceptibility to opportunistic infections

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHyper-IgM syndrome type 2AID deficiency · Activation-induced cytidine deaminase deficiency · HIGM2
frSyndrome hyper-IgM type 2Déficit en AID · Déficit en activation-induced cytidine deaminase · HIGM2
deHyper-IgM-Syndrom Typ 2AID-Mangel · Activation-induced Cytidine-Deaminase-Mangel · HIGM2
esSíndrome de hiper-IgM tipo 2Deficiencia de AID · Deficiencia de citidina deaminasa inducida por activación · HIGM2
itSindrome iper-IgM, tipo 2Deficit di AID · Deficit di citidina deaminasi indotta da attivazione · HIGM2
nlHyper-IgM-syndroom type 2AID-deficiëntie · Activatie-geïnduceerde cytidinedeaminasedeficiëntie · HIGM2
ptSíndrome hiper-IgM tipo 2
plZespół hiper-IgM typu 2HIGM2 · Niedobór AID · Niedobór deaminazy cytydyny indukowanej aktywacją limfocytów
csHyper-IgM syndrom, typ 2AID deficit · Deficit cytidin deaminázy indukovaný aktivitou · HIGM2 · Syndrom hyperimunoglobulinemie IgM, typ 2
ukСиндром гіпер-IgM, тип 2Дефіцит цитидиндезамінази, спричинений активацією · Дефіцит AID · HIGM2
zh高IgM综合征2型活性胞苷脱氨酶缺陷
trHiper-IgM sendromu tip 2HIGM2 · AID eksikliği · Aktivasyon kaynaklı sitidin deaminaz eksikliği
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM605258Evalidated
ICD-10D80.5NTBTattributedvalidated
ICD-114A01.05NTBTindexvalidated
MONDO0011528Evalidated
UMLSC1720956Evalidated
GARD10578Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
AICDADisease-causing germline mutation(s) inAssessedHGNC:13203ENSG0000011173260525712p13.31activation induced cytidine deaminase11007475[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