tetrahydrobiopterin-unresponsive phenylketonuria
MONDO:1060258
A phenylketonuria in which blood phenylalanine concentrations do not fall substantially (conventionally defined as a reduction of more than 30%) in response to an oral tetrahydrobiopterin (BH4; sapropterin dihydrochloride) loading test, so that treatment with BH4 is not effective and phenylalanine-restricted dietary management remains necessary.
Disease research snapshot
No clinical trials have been linked to this exact normalized concept in the current published dataset. This is a coverage limitation, not evidence that the condition or medicine has never been studied. Try a synonym or browse registry-reported labels.
Numbers are derived from CureCurrent's current ClinicalTrials.gov projection and conservative MONDO/RxNorm mappings. See sources, counting rules and limitations and verify eligibility or clinical findings with the original study record.
Research intelligence
Directly mapped studies only · unique clinical trialsCurrent registry observations. Phase counts may overlap. Study start dates are not registry registration dates. Investigational interventions are not approved-treatment recommendations.
Medications under investigation
Verified disease and drug mappings that co-occur within the same study; not evidence of effectiveness.
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CureCurrent links normalized diseases, medicines, registry study labels, sponsors and research sites. A link is not the same as a finding of clinical effectiveness. Our research guides explain how to compare studies, decode RxNorm identities, and avoid over-interpreting site and trial counts. See the published database coverage for mapping completeness.
Disease identity and terminology: MONDO. Trial relationships: ClinicalTrials.gov.