Uniprot Description A disease characterized by malignant hyperphenylalaninemia due to tetrahydrobiopterin deficiency, and defective neurotransmission due to depletion of the neurotransmitters dopamine and serotonin. The principal symptoms include: psychomotor retardation, tonicity disorders, convulsions, drowsiness, irritability, abnormal movements, hyperthermia, hypersalivation, and difficulty swallowing. Some patients may present a phenotype of intermediate severity between severe hyperphenylalaninemia and mild dystonia. In this intermediate phenotype, there is marked motor delay, but no mental retardation and only minimal, if any, hyperphenylalaninemia.
Mondo Term and Equivalent IDs
MONDO:0100186: GTP cyclohydrolase I deficiency with hyperphenylalaninemia
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Counts of Target Development Levels for diseases known to be associated with this disease. If the disease has a valid DOID, targets known to be associated with all child diseases are aggregated. Click "Explore Associated Targets" to view more facets and details for the target list.
This disease has been annotated by GARD as a rare disease.
Description from UniProt.
DataSources which have contributed target associations to this disease, and the identifiers by which the disease is referenced.
GARD:0002844
NCIT:C141442
OMIM:233910
Orphanet:2102
SCTID:23447005
UMLS:C0268467
MONDO:0100186
High level summary of knowledge for a disease, including descriptions and datasource references.