raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:352654

Early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome

Synonyms: Spastic paraplegia type 79

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

A rare, genetic, neurodegenerative disease characterized by normal early development followed by childhood onset optic atrophy with progressive vision loss and eventually blindness, followed by progressive neurological decline that typically includes cerebellar ataxia, nystagmus, dorsal column dysfunction (decreased vibration and position sense), spastic paraplegia and finally tetraparesis.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enEarly-onset progressive neurodegeneration-blindness-ataxia-spasticity syndromeSpastic paraplegia type 79
frSyndrome de neurodégénérescence progressive de l'enfant-cécité-ataxie-spasticitéParaplégie spastique type 79
deFrüh beginnende progressive Neurodegeneration-Blindheit-Ataxie-Spastik-SyndromSpastische Paraplegie Typ 79
esSíndrome de neurodegeneración progresiva-ceguera-ataxia-espasticidad de inicio precozParaplejía espástica tipo 79
itSindrome neurodegenerazione progressiva ad esordio precoce-cecità-atassia-spasticità
nlVroeg optredende progressieve neurodegeneratie - blindheid - ataxie - spasticiteit-syndroomSpastische paraplegie type 79
ptSíndrome de neurodegeneração progressiva de início precoce-cegueira-ataxia-espasticidadeParaplegia espástica autossómica recessiva tipo 79
plPostępująca neurodegeneracja o wczesnym początku z całkowitą utratą wzroku, ataksją i spastycznościąZespół postępującej neurodegeneracji o wczesnym początku, ślepoty, ataksji i spastyczności
csSyndrom zahrnující progresivní neurodegeneraci s časným nástupem, slepotu, ataxii a spasticitu= en
ukСиндром ранньої прогресуючої нейродегенерації-сліпоти-атаксії-спастичностіАутосомно-рецесивна спастична параплегія типу 79
zh早期进行性神经退行性变-失明-共济失调-痉挛综合征
trErken başlangıçlı ilerleyici nörodejenerasyon-körlük-ataksi-spastisite sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM615491BTNTvalidated
OMIM620221BTNTvalidated
ICD-10G31.8NTBTattributedvalidated
MONDO0014209Evalidated
UMLSC4749947Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
UCHL1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:12513ENSG000001542771913424p13ubiquitin C-terminal hydrolase L123359680[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families6 casesWorldwideCase(s)Validated23359680[PMID]_28007905[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_28007905[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

Orphanet has no HPO annotation for this code in this release.

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Sources for this card