raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:314647

Non-progressive cerebellar ataxia with intellectual disability

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

A rare subtype of autosomal dominant cerebellar ataxia type 1 (ADCA type 1) characterized by the onset in infancy of cerebellar ataxia, neonatal hypotonia (in some), mild developmental delay and, in later life, intellectual disability. Less common features include dysarthria, dysmetria and dysmorphic facial features (long face, bulbous nose long philtrum, thick lower lip and pointed chin).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enNon-progressive cerebellar ataxia with intellectual disability
frAtaxie cérébelleuse non progressive avec déficience intellectuelle
deZerebelläre Ataxie, nicht-progressive, mit IntelligenzminderungCANPMR
esAtaxia cerebelosa no progresiva con discapacidad intelectual
itAtassia cerebellare non progressiva con disabilità cognitiva
nlNiet-progressieve cerebellaire ataxie met intellectuele achterstand
ptAtaxia cerebelosa não-progressiva com perturbação do desenvolvimento intelectual
plNiepostępująca ataksja móżdżkowa z niepełnosprawnością intelektualną
csNeprogresivní cerebelární ataxie s mentální retardací
ukНепрогресуюча мозочкова атаксія з інтелектуальною недостатністю
zh非进行性小脑共济失调伴智力障碍
trZihinsel yetersizlik ile seyreden ilerleyici olmayan serebellar ataksi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614756BTNTvalidated
OMIM619352BTNTvalidated
ICD-10G11.0NTBTattributedvalidated
MONDO0013886Evalidated
UMLSC4509917Evalidated

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
CAMTA1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:18806ENSG000001717356115011p36.31-p36.23calmodulin binding transcription activator 122693284[PMID]
POU4F1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:9218ENSG0000015219260163213q31.1POU class 4 homeobox 133783914[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families15 casesWorldwideCase(s)Validated22693284[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

39 annotations · validated 2018-02-19
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001263Global developmental delay
HP:0001256Intellectual disability, mild
Frequent (79-30%)
HP:0002536Abnormal cortical gyration
HP:0012433Abnormal social behavior
HP:0000718Aggressive behavior
HP:0000463Anteverted nares
HP:0001251Ataxia
HP:0000729Autistic behavior
HP:0000414Bulbous nose
HP:0001321Cerebellar hypoplasia
HP:0002019Constipation
HP:0000490Deeply set eye
HP:0000750Delayed speech and language development
HP:0001260Dysarthria
HP:0001310Dysmetria
HP:0011166Focal myoclonic seizure
HP:0000276Long face
HP:0000343Long philtrum
HP:0002354Memory impairment
HP:0001319Neonatal hypotonia
HP:0002470Nonprogressive cerebellar ataxia
HP:0000307Pointed chin
HP:0000486Strabismus
HP:0000179Thick lower lip vermilion
HP:0002317Unsteady gait
HP:0000445Wide nose
Very rare (<4-1%)
HP:0007256Abnormal pyramidal sign
HP:0001348Brisk reflexes
HP:0002120Cerebral cortical atrophy
HP:0025517Hypoplastic hippocampus
HP:0002080Intention tremor
HP:0002003Large forehead
HP:0000256Macrocephaly
HP:0011067Mesiodens
HP:0000160Narrow mouth
HP:0100540Palpebral edema
HP:0400005Short ear
Excluded (0%)
HP:0000639Nystagmus
HP:0002403Positive Romberg sign

Run the differential on the 2 obligate / very frequent terms

Annotation source: 22693284[PMID]_24145135[PMID]_24738973[PMID]_17470457[PMID]

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Sources for this card