raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:708895

Tetrahydrobiopterin-unresponsive phenylketonuria

Synonyms: BH4-unresponsive PKU · BH4-unresponsive phenylketonuria · Tetrahydrobiopterin-unresponsive PKU

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Status
active

Orphadata ships no English definition for this code.

1

Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enTetrahydrobiopterin-unresponsive phenylketonuriaBH4-unresponsive PKU · BH4-unresponsive phenylketonuria · Tetrahydrobiopterin-unresponsive PKU
frPhénylcétonurie résistant à la tétrahydrobioptérinePCU BH4 résistant · PKU BH4 résistant · Phénylcétonurie BH4 résistant · Phénylcétonurie résistant au BH4
deTetrahydrobiopterin-resistente PhenylketonurieBH4-non-responsive Phenylketonurie · BH4-resistente Phenylketonurie · BH4-unresponsive PKU
esFenilcetonuria sin respuesta a tetrahidrobiopterinaFenilcetonuria sin respuesta a BH4 · PKU sin respuesta a BH4 · PKU sin respuesta a tetrahidrobiopterina
itFenilchetonuria non rispondente alla tetraidrobiopterinaPKU non rispondente a BH4 · Fenilchetonuria non rispondente a BH4 · PKU non rispondente alla tetraidrobiopterina
nlFenylketonurie ongevoelig voor tetrahydrobiopterineBH4-resistente PKU · BH4-resistente fenylketonurie · PKU ongevoelig voor tetrahydrobiopterine
ptTetrahydrobiopterin-unresponsive phenylketonuria
plFenyloketonuria niereagująca na tetrahydrobiopterynę= en
csTetrahydrobiopterin-unresponsive phenylketonuria= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM261600NTBTvalidated

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
PAHDisease-causing germline mutation(s) inAssessedHGNC:8582ENSG0000017175961234912q23.2phenylalanine hydroxylase29025426[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

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

7

Sources for this card