raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:200418

Immunodeficiency with factor I anomaly

Synonyms: Complete factor I deficiency

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Adolescent, Adult, Childhood
Status
active

A rare, genetic, primary immunodeficiency disease characterized by increased susceptibility to recurrent, usually severe, infections (particularly by <i>Neisseria meningitidis</i>, <i>Haemophilus influenzae</i> and <i>Streptococcus pneumoniae</i>), typically manifesting as otitis, sinusitis, bronchitis, pneumonia, and/or meningitis. Autoimmune disease (e.g. systemic lupus erythematosus, glomerulonephritis) and atypical hemolytic uremic syndrome may be associated. Laboratory serum analysis reveals, in addition to diminished or undetectable complement factor I, variably decreased complement C3, complement factor B and complement factor H.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enImmunodeficiency with factor I anomalyComplete factor I deficiency
frDéficit immunitaire associé à une anomalie du facteur IDéficit complet en facteur I · Immunodéficience associée à une anomalie du facteur I
deImmundefekt mit Faktor I-AnomalieFaktor-I-Mangel, vollständiger
esInmunodeficiencia con anomalía del factor IDeficiencia completa del factor I
itImmunodeficienza con anomalia del fattore I
nlImmuundeficiëntie met factor I-anomalieComplete factor I-deficiëntie
ptImunodeficiência com anomalia do fator I
plNiedobór odporności z nieprawidłowym czynnikiem I= en
csImunodeficience s anomálií faktoru I= en
ukІмунодефіцит з аномалією фактора IПовний дефіцит фактора I
zh免疫缺陷伴I因子异常I因子完全缺乏症
trFaktör I anomalisi ile seyreden immün yetmezlikTam faktör I eksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM610984Evalidated
ICD-10D84.1NTBTattributedvalidated
ICD-114A00.1YNTBTindexvalidated
MONDO0012594Evalidated
UMLSC5191010Evalidated

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
CFIDisease-causing germline mutation(s) inAssessedHGNC:5394ENSG000002054032170304q25complement factor I
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families35 familiesWorldwideFamily(ies)Validated22710145[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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