raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:689231

IFIH1-related hereditary spastic paraplegia

Synonyms: Interferon induced with helicase C domain 1-related hereditary spastic paraplegia

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Status
active

A rare pure hereditary spastic paraplegia characterized by spastic paraparesis and normal neuroimaging (no leukodystrophy or calcification in the brain). It is a slowly progressing disease in which patients present with varying degrees of toe-walking, frequent falls and a spastic gait, as well as increased tone or obvious spastic paralysis, weakness, and hyperreflexia of the lower limbs. Additional clinical features may include gross hematuria, fibrillation and atrophy of the tongue muscles, and upper limb involvement such as bilateral upper extremity weakness, hypotonia, and atrophy of the interosseous and thenar muscles in the hands. Chilblain lesions and intellectual disability are absent.

1

Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enIFIH1-related hereditary spastic paraplegiaInterferon induced with helicase C domain 1-related hereditary spastic paraplegia
frParaplégie spastique héréditaire associée à IFIH1Paraparésie spastique héréditaire associée à IFIH1 · Paraplégie spastique héréditaire associée au gène Interferon induced with helicase C domain 1
deHereditäre spastische Paraplegie, IFIH1-assoziierte
esParaplejía espástica hereditaria asociada a IFH1Paraplejía espástica hereditaria asociada al dominio 1 de la helicasa C inducida por interferón
itparaplegia spastica ereditaria correlata a IFIH1Paraplegia spastica ereditaria indotta dall'interferone correlata al dominio 1 dell'elicasi C
nlIFIH1-gerelateerde hereditaire spastische paraplegieHereditaire spastische paraplegie gerelateerd aan interferon geïnduceerd met helicase C domein 1
ptParaplegia espástica hereditária IFH1-relacionada
plDziedziczna paraplegia spastyczna związana z IFH1= en
csDědičná spastická paraplegie související s IFH1= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM615846NTBTvalidated
ICD-10G11.4NTBTattributedvalidated
ICD-118B44.0YNTBTattributedvalidated

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
IFIH1Disease-causing germline mutation(s) inAssessedHGNC:18873ENSG000001152676069512q24.2interferon induced with helicase C domain 131427910[PMID]
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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