raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:504523

T-B+NK+ severe combined immunodeficiency due to LAT deficiency

Synonyms: T-B+NK+ SCID due to LAT deficiency

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy
Status
active

A rare severe combined immunodeficiency characterized by T-cell lymphopenia and absent T-cell proliferative responses, and normal B-cell and natural killer cell counts. Patients present in the first months of life with severe recurrent infections, failure to thrive, hematologic autoimmune disorders, and/or lymphoproliferation with splenomegaly.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enT-B+NK+ severe combined immunodeficiency due to LAT deficiencyT-B+NK+ SCID due to LAT deficiency
frDéficit immunitaire combiné sévère T-B+NK+ par déficit en LATDICS T-B+NK+ par déficit en LAT · IDCS T-B+NK+ par déficit en LAT · Immunodéficience combinée sévère T-B+NK+ par déficit en LAT
deImmundefekt, kombinierter schwerer, T-B+NK+, LAT-MangelT-B+NK+ SCID durch LAT-Defizienz
esInmunodeficiencia combinada grave T-B+NK+ por deficiencia de LATSCID T-B+NK+ por deficiencia de LAT · IDCG T-B+NK+ por deficiencia de LAT
itImmunodeficienza combinata grave T-B+NK+ da deficit di LATSCID T-B+NK+ da deficit di LAT
nlT-B+NK+ ernstige gecombineerde immuundeficiëntie door LAT-deficiëntieT-B+NK+ SCID door LAT-deficiëntie
ptImunodeficiência combinada grave por deficiência LAT
plCiężki złożony niedobór odporności z powodu niedoboru LAT= en
csTěžká kombinovaná imunodeficience způsobená deficitem LATSCID způsobená deficitem LAT
ukТяжкий комбінований імунодефіцит, зумовлений дефіцитом LATТКІД через дефіцит LAT
zhLAT缺失导致严重联合免疫缺陷症SCID due to LAT deficiency
trLAT eksikliğine bağlı ağır kombine immün yetmezlikLAT eksikliğine bağlı SCID

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM617514Evalidated
ICD-10D81.2NTBTattributedvalidated
ICD-114A01.10NTBTattributedvalidated
MONDO0044721Evalidated
UMLSC4479588Evalidated

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
LATDisease-causing germline mutation(s) inAssessedHGNC:18874ENSG0000021365860235416p11.2linker for activation of T cells27522155[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated27522155[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_27522155[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card