raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:169154

T-B+NK+ severe combined immunodeficiency due to IL-7Ralpha deficiency

Synonyms: T-B+NK+ SCID due to IL-7Ralpha deficiency

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

A rare T-B+ severe combined immunodeficiency characterized by markedly decreased numbers of T-cells and normal or increased numbers of B-cells and natural killer (NK) cells. Patients generally present in infancy with recurrent infections, failure to thrive, fever, diarrhea, and dermatitis.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enT-B+NK+ severe combined immunodeficiency due to IL-7Ralpha deficiencyT-B+NK+ SCID due to IL-7Ralpha deficiency
frDéficit immunitaire combiné sévère T-B+NK+ par déficit en IL-7RalphaImmunodéficience combinée sévère T-B+NK+ due à un déficit en IL-7Ralpha · SCID T-B+NK+ par déficit en IL-7Ralpha · DICS T-B+NK+ par déficit en IL-7Ralpha · IDCS T-B+NK+ par déficit en IL-7Ralpha
deImmundefekt, kombinierter schwerer, T-B+NK+, durch IL-7Ralpha-MangelT-B+NK+ SCID durch IL-7Ralpha-Mangel
esInmunodeficiencia combinada grave T-B+NK+ por deficiencia de IL-7RalphaIDCG T-B+NK+ por deficiencia de IL-7Ralpha · SCID T-B+NK+ por deficiencia de IL-7Ralpha
itImmunodeficienza combinata grave T-B+NK+ da deficit di IL-7RalfaSCID T-B+NK+ SCID da deficit di IL-7Ralfa
nlT-B+NK+ ernstige gecombineerde immuundeficiëntie door IL-7Ralfa-deficiëntieT-B+NK+ SCID door IL-7Ralfa-deficiëntie
ptImunodeficiência combinada grave T-B+ por deficiência de IL-7R-alfa
plCiężki złożony Niedobór odporności T-B+ z powodu niedoboru IL-7RalfaT-B+ SCID z powodu niedoboru IL-7Ralfa
csT-B+ těžká kombinovaná imunodeficience způsobená deficitem IL-7R alfaT-B+ SCID způsobená deficitem IL-7R alfa
ukТ-В+ тяжкий комбінований імунодефіцит, зумовлений дефіцитом IL-7RalphaТ-В+ ТКИД внаслідок дефіциту IL-7Ralpha
zh白细胞介素7受体α缺乏所致T-B+重症联合免疫缺陷IL-7α缺陷所致T-B+ SCID
trIL-7Ralpha eksikliğine bağlı T-B + ağır kombine immün yetmezlikIL-7Ralpha eksikliğine bağlı T-B + SCID

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608971NTBTvalidated
ICD-10D81.2NTBTattributedvalidated
ICD-114A01.10NTBTindexvalidated
MONDO0015701Evalidated
UMLSC5679577Evalidated

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
IL7RDisease-causing germline mutation(s) inAssessedHGNC:6024ENSG000001686851466615p13.2interleukin 7 receptor
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.15 / 100 000WorldwideValue and classValidated14726805[PMID]
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET
Prevalence at birth<1 / 1 000 0000.04 / 100 000ChileValue and classValidated33861827[PMID]_ORPHANET

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

29 annotations · validated 2019-09-26
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002719Recurrent infections
Frequent (79-30%)
HP:0031381Decreased lymphocyte proliferation in response to mitogen
HP:0045080Decreased proportion of CD3-positive T cells
HP:0032218Decreased proportion of CD4-positive T cells
HP:0005415Decreased proportion of CD8-positive T cells
HP:0005403Decreased total T cell count
HP:0001508Failure to thrive
HP:0001888Lymphopenia
HP:0004429Recurrent viral infections
Occasional (29-5%)
HP:0001596Alopecia
HP:0001973Autoimmune thrombocytopenia
HP:0002028Chronic diarrhea
HP:0001875Decreased total neutrophil count
HP:0001019Erythroderma
HP:0001945Fever
HP:0001433Hepatosplenomegaly
HP:0003261Increased circulating IgA level
HP:0003212Increased circulating IgE concentration
HP:0003237Increased circulating IgG level
HP:0010702Increased circulating immunoglobulin concentration
HP:0001880Increased total eosinophil count
HP:0002716Lymphadenopathy
HP:0100827Lymphocytosis
HP:0040187Neonatal sepsis
HP:0000155Oral ulcer
HP:0025526Psoriasiform lesion
HP:0005401Recurrent candida infections
HP:0002783Recurrent lower respiratory tract infections
HP:0002788Recurrent upper respiratory tract infections

Run the differential on the 1 obligate / very frequent terms

Annotation source: 9843216[PMID]_25046553[PMID]_27593400[PMID]_29167666[PMID]_31379863[PMID]

7

Sources for this card