Other Names for this Disease
- BH4 deficiency
- Hyperphenylalaninemia caused by a defect in biopterin metabolism
- Hyperphenylalaninemia, non-phenylketonuric
- Non-phenylketonuric hyperphenylalaninemia
- Finding Treatment Information - A video developed by GARD Information Specialists that explains how you can find information about treatment for a rare disease.
- ClinicalTrials.gov lists trials that are studying or have studied Tetrahydrobiopterin deficiency. Click on the link to go to ClinicalTrials.gov to read descriptions of these studies.