raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98806

Primary dystonia, DYT6 type

Synonyms: DYT6 · Generalized cervical and upper-limb-onset dystonia · Idiopathic torsion dystonia of mixed type

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

A rare genetic movement disorder characterized by dystonia affecting at first an upper limb, less frequently beginning in the head and neck region, before slowly spreading to other locations. The clinical spectrum, like age of onset, is variable with focal, segmental, or generalized distribution, but cranial involvement with speech difficulties and cervical involvement are typical, whereas lower limbs are often spared. With progression of the disease, many patients suffer from generalized dystonia while mostly remaining ambulatory.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPrimary dystonia, DYT6 typeDYT6 · Generalized cervical and upper-limb-onset dystonia · Idiopathic torsion dystonia of mixed type
frDystonie primaire type DYT6DYT6 · Dystonie de torsion idiopathique mixte · Dystonie généralisée débutant au niveau des cervicales et des membres supérieurs
deDystonie, primäre, Typ DYT6DYT6 · Generalisierte zervikale Dystonie mit überwiegendem Beginn in den oberen Extremitäten · Torsionsdystonie, idiopathische, gemischter Typ
esDistonía primaria tipo DYT6DYT6 · Distonía de torsión idiopática tipo mixto · Distonía generalizada de aparición cervical y en extremidades superiores
itDistonia primitiva tipo DYT6DYT6 · Distonia generalizzata a esordio negli arti superiori e a livello cervicale · Distonia idiopatica di torsione, tipo "misto" · Distonia idiopatica di torsione, tipo misto
nlPrimaire dystonie, DYT6-typeDYT6 · Gegeneraliseerde dystonie met aanvang in de nek en bovenste ledematen · Idiopathische torsiedystonie van het gemengde type
ptDistonia idiopática de torção do tipo misto de início no adulto
plDystonia pierwotna, typ DYT6Dystonia uogólniona rozpoczynająca się od szyi i kończyn górnych · DYT6 · Idiopatyczna dystonia torsyjna typu mieszanego
csPrimární dystonie, typ DYT6DYT6
ukПервинна дистонія, тип DYT6DYT6 · Генералізована шийна дистонія та дистонія верхніх кінцівок · Ідіопатична торсійна дистонія змішаного типу
zh原发性肌张力障碍DYT6型广泛性颈和上肢发作性肌张力障碍
trPrimer distoni, DYT6 tipiDYT6 · Karma tipte idiyopatik torsiyon distonisi · Jeneralize servikal ve üst ekstremite başlangıçlı distoni

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM602629Evalidated
ICD-10G24.1NTBTattributedvalidated
ICD-118A02.0YNTBTindexvalidated
MONDO0011264Evalidated
MeSHC538003Evalidated
UMLSC1414216Evalidated
GARD9630Evalidated

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
THAP1Disease-causing germline mutation(s) inAssessedHGNC:20856ENSG000001319316095208p11.21THAP domain containing 120301334[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_19345147[PMID]_21110056[PMID]
Cases/families53 casesWorldwideCase(s)Validated19345147[PMID]_21110056[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

9 annotations · validated 2018-03-23
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001332Dystonia
HP:0007325Generalized dystonia
Frequent (79-30%)
HP:0001260Dysarthria
Occasional (29-5%)
HP:0000643Blepharospasm
HP:0012179Craniofacial dystonia
HP:0012049Laryngeal dystonia
HP:0031008Lingual dystonia
HP:0000473Torticollis
Very rare (<4-1%)
HP:0002451Limb dystonia

Run the differential on the 2 obligate / very frequent terms

Annotation source: 17702011[PMID]_21110056[PMID]

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Sources for this card