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 mild transient hyperphenylalaninemia often detected by newborn screening and that has_material_basis_in homozygous or compound heterozygous mutation in the PCBD gene, which encodes an enzyme involved in the salvage pathway for BH4, on chromosome 10q22. (DO)
Synonyms:
exact_synonym:
CADH DEFICIENCY; HPABH4D; HYPERPHENYLALANINEMIA, TETRAHYDROBIOPTERIN-DEFICIENT, DUE TO PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE DEFICIENCY; Hyperphenylalaninemia with Primapterinuria; PCBD DEFICIENCY; tetrahydrobiopterin (BH4)-deficient hyperphenylalaninemia (HPA) due to pterin-4-alpha-carbinolamine dehydratase deficiency
CTD Direct Evidence: marker/mechanism ClinVar Annotator: match by term: HYPERPHENYLALANINEMIA, TETRAHYDROBIOPTERIN-DEFICIENT, DUE TO PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE DEFICIENCY | ClinVar Annotator: match by term: Hyperphenylalaninemia, BH4-deficient, D | ClinVar Annotator: match by term: Hyperphenylalaninemia, tetrahydrobiopterin-deficient, due to pterin-4-alpha-carbinolamine dehydratase deficiency