raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:169095

T-B+NK+ severe combined immunodeficiency due to FOXN1 deficiency

Synonyms: T-B+NK+ SCID due to FOXN1 deficiency · Alymphoid cystic thymic dysgenesis · Nude/SCID · Nude/severe combined immunodeficiency · Severe T-cell immunodeficiency-congenital alopecia-nail dystrophy syndrome · Winged helix deficiency

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

A rare, genetic, primary immunodeficiency due to a defect in adaptive immunity characterized by the triad of congenital athymia (resulting in severe T-cell immunodeficiency), congenital alopecia totalis and nail dystrophy. Patients present neonatal or infantile-onset, severe, recurrent, life-threatening infections and low or absent circulating T cells. Additional features reported include erythroderma, lymphoadenopathy, diarrhea and failure to thrive.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enT-B+NK+ severe combined immunodeficiency due to FOXN1 deficiencyT-B+NK+ SCID due to FOXN1 deficiency · Alymphoid cystic thymic dysgenesis · Nude/SCID · Nude/severe combined immunodeficiency · Severe T-cell immunodeficiency-congenital alopecia-nail dystrophy syndrome · Winged helix deficiency
frDéficit immunitaire combiné sévère T-B+NK+ par déficit en FOXN1Immunodéficience combinée sévère T-B+NK+ par déficit en FOXN1 · DICS T-B+NK+ par déficit en FOXN1 · Dysgénésie kystique alymphoïde du thymus · Syndrome d'immunodéficience sévère à cellules T-alopécie congénitale-dystrophie des ongles · Syndrome de déficit immunitaire sévère à cellules T-alopécie congénitale-dystrophie des ongles · SCID T-B+NK+ par déficit en FOXN1
deImmundefekt, kombinierter schwerer, durch FOXN1-DefizienzSchwerer T-Zell-Immundefekt-kongenitale Alopezie-Nageldystrophie-Syndrom · Winged-Helix-Defekt · Winged-Helix-Nude-Defekt · Alymphoide zystische Thymus-Dysgenesie · Nude/SCID · SCID durch FOXN1-Mangel
esInmunodeficiencia combinada grave por deficiencia de FOXN1Deficiencia de la hélice alada · Disgenesia quística alinfoide del timo · IDCG por deficiencia de FOXN1 · IDCG/linfocito desnudo · Inmunodeficiencia combinada grave/linfocito desnudo · Nude/SCID · SCID por deficiencia de FOXN1 · Síndrome de inmunodeficiencia grave de linfocitos T-alopecia congénita-distrofia ungueal
itImmunodeficienza combinata grave da deficit di FOXN1Deficit "winged helix" · Deficit 'winged helix' · Disgenesia timica cistica alinfoide · SCID/nuda · Immunodeficienza combinata grave nuda · SCID da deficit di FOXN1 · Sindrome immunodeficienza grave delle cellule T-alopecia congenita-distrofia ungueale · Disgenesia alinfoide cistica del timo
nlErnstige gecombineerde immuundeficiëntie door FOXN1-deficiëntieAlymfoïde cystische thymusdysgenesie · Ernstige T-cel-immuundeficiëntie - congenitale alopecie - nageldystrofie-syndroom · Naakte/SCID · Naakte/ernstige gecombineerde immuundeficiëntie · SCID door FOXN1-deficiëntie · Winged helix-deficiëntie
ptImunodeficiência combinada grave por deficiência de FOXN1Imunodeficiência grave de células T-alopecia congénita-distrofia das unhas
plCiężki złożony niedobór odporności spowodowany niedoborem FOXN1Ciężki Niedobór odporności T-komórkowej - łysienie wrodzone - dystrofia paznokci · Niedobór skrzydlatej helisy
csNelymfoidní cystická dysgeneze brzlíkuDeficience Winged Helix Nude · Syndrom zahrnující těžkou T-buněčnou imunodeficienci, vrozenou alopecii a dystrofii nehtů
ukТяжкий комбінований імунодефіцит, зумовлений дефіцитом FOXN1Алімфоїдно-кістозна дисгенезія тимуса · Nude/SCID · Виражений/тяжкий комбінований імунодефіцит · ТКІД внаслідок дефіциту FOXN1 · Синдром тяжкого Т-клітинного імунодефіциту - вродженої алопеції та дистрофії нігтів · Дефіцит крилатої спіралі
zhFOXN1缺乏所致重度联合免疫缺陷严重T细胞免疫缺陷-先天性秃发-甲营养不良综合征
trFOXN1 eksikliğine bağlı ağır kombine immün yetmezlikÇıplak/SCID · Hızlı sarmal eksikliği · FOXN1 eksikliğine bağlı SCID · Alymphoid kistik timik disgenezi · Çıplak/ağır kombine immün yetmezlik · Ağır T hücre immün yetmezlik-doğumsal alopesi-tırnak distrofi sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM601705Evalidated
ICD-10D82.8NTBTattributedvalidated
ICD-114A01.1YNTBTindexvalidated
MONDO0011132Evalidated
MONDO11132Evalidated
MeSHC536781Evalidated
UMLSC1866426Evalidated
GARD4358Evalidated

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
FOXN1Disease-causing germline mutation(s) inAssessedHGNC:12765ENSG0000010910160083817q11.2forkhead box N110206641[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families9 casesWorldwideCase(s)Validated28077132[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_28077132[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

5 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0005597Congenital alopecia totalis
HP:0005403Decreased total T cell count
HP:0002721Immunodeficiency
HP:0001803Nail pits
HP:0001807Ridged nail

Run the differential on the 5 obligate / very frequent terms

7

Sources for this card