| Namespace | disease_ontology | Obsolete | false |
| description | 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. |
