Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 2, 2026, 3:22 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–11 of 11 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Tetrahydrobiopterin (BH4), Antioxidant Cocktail
Drug · Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Augusta, Georgia
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Phenylketonuria, Oxidative Stress, and BH4

NCT01395394
Conditions
Phenylketonuria
Interventions
Kuvan, Meal Challenge
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
10 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Decatur, Georgia
Completed Phase 2Phase 3 Interventional Results available

Open-Label Extension Study of Kuvan for Autism

NCT00943579
Conditions
Autistic Disorder
Interventions
Kuvan®
Drug
Lead sponsor
The Children's Health Council
Other
Eligibility
3 Years to 6 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Palo Alto, California
Completed Not applicable Interventional Results available

Rhode Island Diastolic Dysfunction - Heart Failure

NCT02353312
Conditions
Heart Failure, Cardiovascular Disease
Interventions
Kuvan
Drug
Lead sponsor
Providence VA Medical Center
Federal
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Providence, Rhode Island
Conditions
Phenylketonuria, Behavior and Behavior Mechanisms, PAH Gene Expression
Interventions
sapropterin dihydrochloride
Drug
Lead sponsor
Tulane University School of Medicine
Other
Eligibility
2 Years to 21 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
New Orleans, Louisiana
Completed Phase 1Phase 2 Interventional Results available

Study of Kuvan Treatment in Adults With GTPCH Deficiency

NCT01425528
Conditions
GTP Cyclohydrolase Deficiency
Interventions
Sapropterin
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Conditions
Heart Failure With Preserved Ejection Fraction, Inflammation
Interventions
L-Citrulline, Placebo for L-Citrulline, BH4, Placebo for BH4, Atorvastatin, Placebo for Atorvastatin
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
1
States / cities
Salt Lake City, Utah
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Cystic Fibrosis and Endothelial Function: At Rest and During Exercise

NCT01772758
Conditions
Cystic Fibrosis
Interventions
BH4 5mg, BH4 20mg, Antioxidant Cocktail
Drug · Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
7 Years and older
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
Augusta, Georgia
Conditions
Phenylketonuria
Interventions
sapropterin dihydrochloride
Drug
Lead sponsor
BioMarin Pharmaceutical
Industry
Eligibility
Up to 6 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
12
States / cities
La Jolla, California • Orange, California • Tampa, Florida + 9 more
Conditions
Gastroparesis
Interventions
sapropterin dihydrochloride
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Stanford, California
Conditions
Autism Spectrum Disorder
Interventions
sapropterin dihydrochloride
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
2 Years to 6 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Little Rock, Arkansas