raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:247198

Progressive cerebello-cerebral atrophy

Synonyms: PCCA

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

A rare genetic neurological disorder characterized by postnatal onset of severe global developmental delay, profound mental retardation, progressive microcephaly, progressive spasticity evolving into spastic quadriplegia with joint contractures, generalized seizures, and irritability. Severe choreoathetosis and dysmorphic features are absent. Brain imaging shows progressive cerebellar atrophy followed by cerebral atrophy affecting both white and grey matter, but no pontine involvement.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enProgressive cerebello-cerebral atrophyPCCA
frAtrophie cérébello-cérébrale progressive= en
deProgressive zerebelläre-zerebrale Atrophie= en
esAtrofia cerebral y cerebelosa progresiva= en
itAtrofia cerebello-cerebrale progressiva= en
nlProgressieve cerebello-cerebrale atrofie= en
ptAtrofia cerebelo-cerebral progressiva= en
plPostępujący zanik móżdżkowo-mózgowy= en
csProgresivní cerebelo-cerebrální atrofie= en
ukПрогресуюча мозочково-мозкова атрофія= en
zh进行性小脑萎缩= en
trİlerleyici serebello-serebral atrofi= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM615851BTNTvalidated
ICD-10G31.8NTBTattributedvalidated
MONDO0016589Evalidated
UMLSC3151140Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SEPSECSDisease-causing germline mutation(s) inAssessedHGNC:30605ENSG000001096186130094p15.2Sep (O-phosphoserine) tRNA:Sec (selenocysteine) tRNA synthase20920667[PMID]
VPS53Disease-causing germline mutation(s) inAssessedHGNC:25608ENSG0000014125261585017p13.3VPS53 subunit of GARP complex24577744[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families7 casesWorldwideCase(s)Validated12920088[PMID]_25044680[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_12920088[PMID]_25044680[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

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

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Sources for this card