raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:647804

Combined immunodeficiency due to FCHO1 deficiency

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Status
active

A rare combined T and B cell immunodeficiency characterized by early-onset of recurrent severe bacterial, viral, and fungal infections. Many patients present failure to thrive. Occurrence of lymphoma, as well as neurologic features, have been reported in some cases. Laboratory examination shows decreased CD4+ T cells and variable B cell lymphopenia and hypogammaglobulinemia.

1

Names in Orphadata languages

10 of 12 languages
LangNameSynonyms
enCombined immunodeficiency due to FCHO1 deficiency
frDéficit immunitaire combiné par déficit en FCHO1
deKombinierter Immundefekt durch FCHO1-Defizienz
esInmunodeficiencia combinada por deficiencia de FCHO1
itImmunodeficienza combinata da deficit di FCHO1
nlGecombineerde immuundeficiëntie door FCHO1-deficiëntie
ptImunodeficiência combinada por deficiência FCHO1
plZłożony niedobór odporności spowodowany niedoborem FCHO1
csKombinovaná imunodeficience způsobená deficitem FCHO1
ukКомбінований імунодефіцит, зумовлений дефіцитом FCHO1

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM619164Evalidated
ICD-10D81.8NTBTattributedvalidated
MONDO0030898Evalidated
UMLSC5816748Evalidated

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
FCHO1Disease-causing germline mutation(s) inAssessedHGNC:29002ENSG0000013047561343719p13.11FCH and mu domain containing endocytic adaptor 132098969[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