raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:101150

Autosomal recessive dopa-responsive dystonia

Synonyms: Autosomal recessive Segawa syndrome · DYT5b · Tyrosine hydroxylase deficiency · Tyrosine hydroxylase-deficient dopa-responsive dystonia

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

A very rare neurometabolic disorder characterized by a spectrum of symptoms ranging from those seen in dopa-responsive dystonia (DRD) to progressive infantile encephalopathy.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal recessive dopa-responsive dystoniaAutosomal recessive Segawa syndrome · DYT5b · Tyrosine hydroxylase deficiency · Tyrosine hydroxylase-deficient dopa-responsive dystonia
frDystonie dopa-sensible autosomique récessiveDYT5b · Dystonie dopa-sensible par déficit en tyrosine hydroxylase · Déficit en tyrosine hydroxylase · Syndrome de Segawa autosomique récessif
deDopa-responsive Dystonie, autosomal-rezessiveDYT5b · Segawa-Syndrom, autosomal-rezessives · Tyrosin-Hydroxylase-Mangel · Tyrosin-Hydroxylase-defiziente dopa-responsive Dystonie
esDistonía dopa-sensible autosómica recesivaDYT5b · Deficiencia de tirosina hidroxilasa · Distonía dopa-sensible deficiente en tirosina hidroxilasa · Síndrome de Segawa autosómico recesivo
itDistonia Dopa-sensibile autosomica recessivaDYT5b · Deficit di tirosina idrossilasi · Distonia Dopa-sensibile da deficit di tirosina idrossilasi · Sindrome di Segawa autosomica recessiva
nlAutosomaal recessieve doparesponsieve dystonieAutosomaal recessief syndroom van Segawa · DYT5b · Tyrosinehydroxylasedeficiënte doparesponsieve dystonie · Tyrosinehydroxylasedeficiëntie
ptDistonia sensível à dopa autossómica recessiva
plAutosomalna recesywna dystonia reagująca na L-dopaAutosomalny recesywny zespół Segawa · Dystonia z niedoborem hydroksylazy tyrozyny wrażliwa na L-dopa · Niedobór hydrolazy tyrozyny
csAutozomálně recesivní dopa-responzivní dystonieDYT5b · Deficit tyrosin hydroxylázy · Tyrosin hydroxyláza-deficientní dopa-responzivní dystonie · Autozomálně recesivní Segawova nemoc
ukАутосомно-рецесивна дофа-залежна дистоніяАутосомно-рецесивний синдром Сегави · DYT5b · Дефіцит тирозин гідроксилази · Тирозин-гідроксилазно-дефіцитна допа-реактивна дистонія
zh常染色体隐性遗传多巴反应性肌张力障碍酪氨酸羟化酶缺陷所致多巴反应性肌张力障碍
trOtozomal resesif dopaya duyarlı distoniDYT5b · Tirozin hidroksilaz eksikliği · Otozomal çekinik Segawa sendromu · Tirozin hidroksilaz eksikliği olan dopa-duyarlı distoni

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM605407Evalidated
OMIM620453BTNTvalidated
ICD-10G24.1NTBTattributedvalidated
ICD-118A02.11NTBTindexvalidated
MONDO0011551Evalidated
MeSHC537537Evalidated
UMLSC5700309Evalidated
GARD1902Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TSPOAP1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:16831ENSG0000000537961076417q22TSPO associated protein 133539324[PMID]
THDisease-causing germline mutation(s) inAssessedHGNC:11782ENSG0000018017619129011p15.5tyrosine hydroxylase
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families50 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence1-9 / 1 000 000—EuropeClass 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.

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HPO phenotypes

33 annotations · validated 2018-02-28
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0002071Abnormality of extrapyramidal motor function
HP:0001251Ataxia
HP:0003487Babinski sign
HP:0002067Bradykinesia
HP:0001348Brisk reflexes
HP:0002019Constipation
HP:0003785Decreased CSF homovanillic acid concentration
HP:0000750Delayed speech and language development
HP:0003781Excessive salivation
HP:0011968Feeding difficulties
HP:0004373Focal dystonia
HP:0002066Gait ataxia
HP:0002375Hypokinesia
HP:0001252Hypotonia
HP:0000737Irritability
HP:0001254Lethargy
HP:0002451Limb dystonia
HP:0002395Lower limb hyperreflexia
HP:0001270Motor delay
HP:0001336Myoclonus
HP:0030166Night sweats
HP:0010553Oculogyric crisis
HP:0001300Parkinsonism
HP:0001761Pes cavus
HP:0002174Postural tremor
HP:0000508Ptosis
HP:0002063Rigidity
HP:0001762Talipes equinovarus
Occasional (29-5%)
HP:0001945Fever
HP:0007325Generalized dystonia
HP:0001256Intellectual disability, mild
Very rare (<4-1%)
HP:0001290Generalized hypotonia
HP:0002448Progressive encephalopathy

Annotation source: 8817341[PMID]_16722965[PMID]_22030388[PMID]_20482602[PMID]

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Sources for this card