raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:513436

Autosomal recessive spastic paraplegia type 78

Synonyms: SPG78

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

A rare autosomal recessive complex spastic paraplegia characterized by mostly adult-onset progressive spasticity and weakness predominantly affecting the lower limbs, axonal motor and sensory neuropathy, and cerebellar symptoms like ataxia, dysarthria, and oculomotor abnormalities. Variable degrees of cognitive impairment may also be present. Subtle extrapyramidal involvement and supranuclear gaze palsy were reported in some cases. Features on brain imaging include cerebral and cerebellar atrophy and sometimes abnormalities of the corpus callosum or basal ganglia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal recessive spastic paraplegia type 78SPG78
frParaplégie spastique autosomique récessive type 78= en
deSpastische Paraplegie, autosomal-rezessive, Typ 78= en
esParaplejía espástica autosómica recesiva tipo 78= en
itParaplegia spastica autosomica recessiva tipo 78= en
nlAutosomaal recessieve spastische paraplegie type 78= en
ptParaplegia espástica autossómica recessiva tipo 78
plAutosomalna recesywna spastyczna paraplegia typu 78= en
csAutozomálně recesivní spastická paraplegie, typ 78= en
ukАутосомно-рецесивна спастична параплегія, тип 78= en
zh78型常染色体隐性痉挛性截瘫78型痉挛性截瘫
trOtozomal resesif spastik parapleji tip 78= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM617225Evalidated
ICD-10G11.4NTBTattributedvalidated
MONDO0014975Evalidated
UMLSC5567893Evalidated

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
ATP13A2Disease-causing germline mutation(s) inAssessedHGNC:30213ENSG000001593636105131p36.13ATPase cation transporting 13A228137957[PMID]_29112700[PMID]_27217339[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families7 casesWorldwideCase(s)Validated28137957[PMID]_29112700[PMID]_27217339[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_29112700[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

28 annotations · validated 2018-10-08
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003487Babinski sign
HP:0001272Cerebellar atrophy
HP:0002120Cerebral cortical atrophy
HP:0100543Cognitive impairment
HP:0001260Dysarthria
HP:0003482EMG: axonal abnormality
HP:0001288Gait disturbance
HP:0001347Hyperreflexia
HP:0003477Peripheral axonal neuropathy
HP:0002073Progressive cerebellar ataxia
HP:0007240Progressive gait ataxia
HP:0007020Progressive spastic paraplegia
HP:0000486Strabismus
Frequent (79-30%)
HP:0002518Abnormal periventricular white matter morphology
HP:0007256Abnormal pyramidal sign
HP:0001332Dystonia
HP:0000666Horizontal nystagmus
HP:0002079Hypoplasia of the corpus callosum
HP:0000011Neurogenic bladder
HP:0001761Pes cavus
HP:0002478Progressive spastic quadriplegia
HP:0003390Sensory axonal neuropathy
HP:0000605Supranuclear gaze palsy
Very rare (<4-1%)
HP:0000726Dementia
HP:0000317Facial myokymia
HP:0000738Hallucinations
HP:0007153Progressive extrapyramidal movement disorder
Excluded (0%)
HP:0003202Skeletal muscle atrophy

Run the differential on the 12 obligate / very frequent terms

Annotation source: 27217339[PMID]_28137957[PMID]_29112700[PMID]_29112699[PMID]_27165006[PMID]

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Sources for this card