raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1955

Spinocerebellar ataxia type 34

Synonyms: Erythrokeratodermia with ataxia · SCA34 · Spinocerebellar ataxia and erythrokeratodermia

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

An autosomal dominant cerebellar ataxia type I that is characterized by papulosquamous, ichthyosiform plaques on the limbs appearing shortly after birth and later manifestations including progressive ataxia, dysarthria, nystagmus and decreased reflexes.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSpinocerebellar ataxia type 34Erythrokeratodermia with ataxia · SCA34 · Spinocerebellar ataxia and erythrokeratodermia
frAtaxie spinocérébelleuse type 34Ataxie spinocérébelleuse avec érythrokératodermie · Erythrokératodermie avec ataxie
deAtaxie, spinozerebelläre, Typ 34Erythrokeratodermie mit Ataxie · SCA34 · Spinozerebelläre Ataxie und Erythrokeratoderm
esAtaxia espinocerebelosa tipo 34Ataxia espinocerebelosa y eritroqueratodermia · Eritroqueratodermia con ataxia · SCA34
itAtassia spinocerebellare tipo 34Atassia spinocerebellare ed eritrocheratodermia · Eritrocheratodermia con atassia · SCA34
nlSpinocerebellaire ataxie type 34Erytrokeratodermie met ataxie · SCA34 · Spinocerebellaire ataxie en erytrokeratodermie
ptAtaxia espinocerebelosa tipo 34Eritroqueratodermia-ataxia
plAtaksja rdzeniowo-móżdżkowa typu 34Ataksja rdzeniowo-móżdżkowa z erytrokeratodermią · Erytrokeratodermia z ataksją · SCA34
csSpinocerebelární ataxie, typ 34Erytrokeratodermie s ataxií · SCA34 · Spinocerebelární ataxie a erytrokeratodermie
ukСпіноцеребеллярна атаксія, тип 34Еритрокератодермія з атаксією · SCA34 · Спіноцеребеллярна атаксія та еритрокератодермія
zh脊髓小脑共济失调34型脊髓小脑共济失调和红斑角化病
trSpinoserebellar ataksi tip 34SCA34 · Ataksi ile seyreden eritrokeratodermi · Spinoserebellar ataksi ve eritrokeratodermi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM133190Evalidated
ICD-10G11.1NTBTattributedvalidated
ICD-118A03.16NTBTattributedvalidated
MONDO0007574Evalidated
MeSHC535738Evalidated
UMLSC1851481Evalidated
GARD59Evalidated

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 (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ELOVL4Disease-causing germline mutation(s) inAssessedHGNC:14415ENSG000001184026055126q14.1ELOVL fatty acid elongase 424566826[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_31105016[PMID]_31750392[PMID]_[EXPERT]
Cases/families45 casesWorldwideCase(s)Validated31105016[PMID]_31750392[PMID]_[EXPERT]

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

16 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002167Abnormality of speech or vocalization
HP:0000958Dry skin
HP:0001260Dysarthria
HP:0002075Dysdiadochokinesis
HP:0001288Gait disturbance
HP:0000966Hypohidrosis
HP:0001265Hyporeflexia
HP:0012733Macule
HP:0000639Nystagmus
HP:0200034Papule
HP:0002073Progressive cerebellar ataxia
HP:0001025Urticaria
Frequent (79-30%)
HP:0100022Abnormality of movement
Occasional (29-5%)
HP:0003011Abnormality of the musculature
HP:0000324Facial asymmetry
HP:0000486Strabismus

Run the differential on the 12 obligate / very frequent terms

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Sources for this card