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72 studies found for:    "tetrahydrobiopterin deficiency" OR "phenylketonurias"
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Rank Status Study
1 Suspended Liver Cell Transplant for Phenylketonuria
Condition: Phenylketonuria
Interventions: Radiation: Preparative Radiation Therapy;   Procedure: Hepatocyte Transplant;   Drug: Immunosuppression;   Other: Liver Evaluation;   Behavioral: Psychological Assessment
2 Unknown  Response to Phenylketonuria to Tetrahydrobiopterin (BH4)
Condition: Phenylketonuria
Intervention: Drug: tetrahydrobiopterin (BH4)
3 Completed
Has Results
Phase 3 Open-label Study to Evaluate the Response and Safety of Kuvan® in Subjects With Phenylketonuria
Condition: Phenylketonuria
Intervention: Drug: Kuvan®
4 Active, not recruiting Kuvan®'s Effect on the Cognition of Children With Phenylketonuria
Condition: Phenylketonuria
Intervention: Drug: Kuvan®
5 Completed Quantitative Requirements of Docosahexaenoic Acid for Neural Function in Children With Phenylketonuria
Condition: Phenylketonuria
Interventions: Dietary Supplement: high oleic sunflower oil;   Dietary Supplement: microalgal oil
6 Unknown  Sapropterin in Individuals With Phenylketonuria
Condition: Phenylketonuria
Intervention: Drug: Sapropterin (Kuvan)
7 Terminated
Has Results
Phenylketonuria, Oxidative Stress, and BH4
Condition: Phenylketonuria
Interventions: Drug: Kuvan;   Other: Meal Challenge
8 Terminated
Has Results
Sapropterin on Cognitive Abilities in Young Adults With Phenylketonuria
Condition: Phenylketonuria
Interventions: Drug: Sapropterin;   Drug: Placebo
9 Completed
Has Results
The Brain, Neurological Features and Neuropsychological Functioning in Adults With Phenylketonuria: A Pilot Study
Condition: Phenylketonuria
Intervention: Other: MRI
10 Completed Protein Requirements in Children With Phenylketonuria (PKU)
Condition: Phenylketonuria
Intervention: Dietary Supplement: Protein intake
11 Terminated Behavioral Effects of Kuvan in Children With Mild Phenylketonuria
Condition: Phenylketonuria
Intervention: Drug: Kuvan
12 Active, not recruiting
Has Results
Kuvan® in Phenylketonuria Patients Less Than 4 Years Old
Condition: Phenylketonuria
Interventions: Drug: Kuvan®;   Other: Phenylalanine (Phe)-restricted diet
13 Completed The Effect of Supplemental Docosahexaenoic Acid (DHA) on Neurocognitive Outcomes in Teen and Adult Women With Phenylketonuria(PKU)
Condition: Phenylketonuria
Interventions: Dietary Supplement: Docosahexaenoic Acid;   Dietary Supplement: Corn/soy oil
14 Completed
Has Results
Safety and Therapeutic Effects of Sapropterin Dihydrochloride on Neuropsychiatric Symptoms in Phenylketonuria (PKU) Patients
Condition: Phenylketonuria
Interventions: Drug: Sapropterin dihydrochloride;   Drug: Placebo
15 Completed Low Phenylalanine Diet for Mothers With Phenylketonuria (PKU)
Condition: Phenylketonuria
Intervention: Behavioral: Restricted phenylalanine diet
16 Not yet recruiting Simplified Diet Approach in Phenylketonuria
Condition: Phenylketonuria
Intervention: Behavioral: Dietary Protein Counting and Free Fruits and Vegetables
17 Completed
Has Results
Response to Kuvan® in Subjects With Phenylketonuria (PKU) in a 4 Weeks Testing Period
Condition: Phenylketonuria
Intervention: Drug: Kuvan®
18 Unknown  Kuvan Therapy in Phenylketonuria (PKU): The Effect of Blood Phenylalanine Concentration on Kuvan Response
Condition: Phenylketonuria
Intervention: Drug: Kuvan
19 Completed The Effects of Kuvan on Functional Brain Connectivity in Individuals With Phenylketonuria (PKU)
Condition: Phenylketonuria
Intervention: Drug: Sapropterin
20 Completed Safety and Tolerability Study of rAvPAL-PEG to Treat Phenylketonuria
Condition: Phenylketonuria
Intervention: Drug: rAvPAL-PEG

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Study has passed its completion date and status has not been verified in more than two years.