raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:320396

Autosomal recessive spastic paraplegia type 45

Synonyms: Autosomal recessive spastic paraplegia type 65 · SPG45 · SPG65

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

Autosomal recessive spastic paraplegia type 45 is a rare, pure or complex form of hereditary spastic paraplegia characterized by onset in infancy of progressive lower limb spasticity, abnormal gait, increased deep tendon reflexes and extensor plantar responses, that may be associated with intellectual disability. Additional signs, such as contractures in the lower limbs, amyotrophy, clubfoot and optic atrophy, have also been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal recessive spastic paraplegia type 45Autosomal recessive spastic paraplegia type 65 · SPG45 · SPG65
frParaplégie spastique autosomique récessive type 45Paraplégie spastique autosomique récessive type 65 · SPG45 · SPG65
deSpastische Paraplegie, autosomal-rezessive, Typ 45SPG45 · SPG65 · Spastische Paraplegie, autosomal-rezessive, Typ 65
esParaplejía espástica autosómica recesiva tipo 45Paraplejía espástica autosómica recesiva tipo 65 · SPG45 · SPG65
itParaplegia spastica autosomica recessiva, tipo 45Paraplegia spastica autosomica recessiva, tipo 65 · SPG45 · SPG65
nlAutosomaal recessieve spastische paraplegie type 45Autosomaal recessieve spastische paraplegie type 65 · SPG45 · SPG65
ptParaplegia espástica autossómica recessiva tipo 45
plAutosomalna recesywna paraplegia spastyczna typu 45Autosomalna recesywna paraplegia spastyczna typu 65 · SPG45 · SPG65
csAutozomálně recesivní spastická paraplegie, typ 45SPG45 · SPG65 · Autozomálně recesivní spastická paraplegie, typ 65
ukАутосомно-рецесивна спастична параплегія, тип 45Аутосомно-рецесивна спастична параплегія типу 65 · SPG45 · SPG65
zh常染色体隐性遗传痉挛性截瘫45型常染色体隐性遗传痉挛性截瘫65型
trOtozomal resesif spastik parapleji tip 45SPG45 · SPG65 · Otozomal çekinik spastik parapleji tip 65

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613162Evalidated
ICD-10G11.4NTBTattributedvalidated
ICD-118B44.01NTBTattributedvalidated
MONDO0013165Evalidated
UMLSC3888209Evalidated
GARD17477Evalidated

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
NT5C2Disease-causing germline mutation(s) inAssessedHGNC:8022ENSG0000007668560041710q24.32-q24.335'-nucleotidase, cytosolic II24482476[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families7 familiesWorldwideFamily(ies)Validated28884889[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_28884889[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.

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HPO phenotypes

14 annotations · validated 2018-02-07
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0006466Ankle flexion contracture
HP:0003487Babinski sign
HP:0005830Flexion contracture of toe
HP:0001249Intellectual disability
HP:0006380Knee flexion contracture
HP:0002061Lower limb spasticity
HP:0002064Spastic gait
HP:0001258Spastic paraplegia
Frequent (79-30%)
HP:0001263Global developmental delay
HP:0001347Hyperreflexia
HP:0001270Motor delay
HP:0012043Pendular nystagmus
Occasional (29-5%)
HP:0000545Myopia
HP:0000648Optic atrophy

Run the differential on the 8 obligate / very frequent terms

Annotation source: 19415352[PMID]

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Sources for this card