RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A tetrahydrobiopterin (BH4)-deficient hyperphenylalaninemia that is characterized by hyperphenylalaninemia, depletion of the neurotransmitters dopamine and serotonin, and progressive cognitive and motor deficits that has_material_basis_in homozygous or compound heterozygous mutation in the GCH1 gene on chromosome 14q22.2. (DO)
Synonyms:
exact_synonym:
GTP Cyclohydrolase I Deficiency; GTP cyclohydrolase 1 deficiency; HPABH4B; tetrahydrobiopterin-deficient hyperphenylalaninemia B; tetrahydrobiopterin-deficient hyperphenylalaninemia due to GTP cyclohydrolase I deficiency
narrow_synonym:
DYSTONIA, DOPA-RESPONSIVE, WITH OR WITHOUT HYPERPHENYLALANINEMIA, AUTOSOMAL RECESSIVE
CTD Direct Evidence: marker/mechanism OMIM:233910 ClinVar Annotator: match by term: GTP cyclohydrolase I deficiency | ClinVar Annotator: match by term: Hyperphenylalaninemia, BH4-Deficient, B
ClinVar Annotator: match by term: HYPERPHENYLALANINEMIA, TETRAHYDROBIOPTERIN-DEFICIENT, DUE TO GTP CYCLOHYDROLASE I DEFICIENCY | ClinVar Annotator: match by term: Hyperphenylalaninemia, BH4-Deficient, B