Tetrahydrobiopterin ( DrugBank: Tetrahydrobiopterin )
1 disease
| ID | Disease name (Link within this page) | Number of trials |
|---|---|---|
| 240 | Phenylketonuria | 26 |
240. Phenylketonuria
Clinical trials : 138 / Drugs : 106 - (DrugBank : 11) / Drug target gene : 1 - Drug target pathways : 5
| No. | TrialID | Date_ enrollment | Date_ registration | Public_title | Scientific_title | Condition | Intervention | Primary_ sponsor | Secondary_ sponsor | Recruitment_ Status | Inclusion_ agemin | Inclusion_ agemax | Inclusion_ gender | Target_ size | Phase | Countries |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NCT04375592 (ClinicalTrials.gov) | February 1, 2021 | 21/4/2020 | Acceptability and Tolerance of a Ready-to-use Protein Substitute in Tablet Form for the Dietary Management of Phenylketonuria | XPhe Minis - Acceptability and Tolerance Market Research | Phenylketonurias;Hyperphenylalaninaemia;Tetrahydrobiopterin Deficiency | Dietary Supplement: Phenylalanine-free protein substitute in tablet form (XPhe minis) | metaX Institut fuer Diatetik GmbH | Birmingham Children's Hospital | Recruiting | 7 Years | 18 Years | All | 10 | United Kingdom | |
| 2 | NCT04014712 (ClinicalTrials.gov) | August 2019 | 3/7/2019 | O2 Transport and Utilization in Health and Lung Disease | Role of Nitric Oxide Coupling in Muscle Dysfunction With COPD | COPD;Tetrahydrobiopterin Deficiency;Oxidative Stress | Drug: Tetrahydrobiopterin;Drug: Placebo oral tablet | University of Massachusetts, Amherst | NULL | Not yet recruiting | 18 Years | 85 Years | All | 30 | Phase 1 | United States |
| 3 | NCT03519711 (ClinicalTrials.gov) | June 24, 2018 | 11/4/2018 | A Study of CNSA-001 in Primary Tetrahydrobiopterin (BH4) Deficient Participants With Hyperphenylalaninemia | A Phase 1/2, Open-Label, Randomized Parallel Arm, Intra-patient Dose Escalation Study to Evaluate the Safety, Pharmacokinetics and Preliminary Efficacy of CNSA-001(Sepiapterin) in Primary Tetrahydrobiopterin Deficient Patients With Hyperphenylalaninemia | BH4 Deficiency;Hyperphenylalaninemia | Drug: CNSA-001 | PTC Therapeutics | NULL | Completed | 12 Months | N/A | All | 6 | Phase 1/Phase 2 | United States;Germany |
| 4 | NCT03864029 (ClinicalTrials.gov) | October 10, 2017 | 22/2/2019 | Retrospective Observational Safety Effectiveness With Kuvan in hpA | An Observational Study Research to Collect the Effectiveness and Safety Data of KUVAN® Retrospectively in Chinese Subjects With Hyperphenylalaninemia (HPA) Caused by Tetrahydrobiopterin (BH4) Deficiency | Tetrahydrobiopterin Deficiency | Drug: KUVAN | BioMarin Pharmaceutical | Quintiles, Inc. | Completed | N/A | N/A | All | 26 | China | |
| 5 | EUCTR2009-015844-41-ES (EUCTR) | 31/10/2013 | 16/01/2014 | A Study of the Long-term Effects on Mental Abilities of 4 to 5 Year-old Children with a Disease Caused by an Enzyme Defect (Phenylketonuria) that Have Been Treated with Kuvan® (a Medicinal Product aimed at Restoring the Defect) for 7 Years. | A Phase IV Open-Label, Single-Cohort Study of the Long-Term Neurocognitive Outcomes in 4 to 5 Year-Old Children with Phenylketonuria Treated with Sapropterin Dihydrochloride (Kuvan®) for 7 Years. - KOGNITO (Kuvan®'s effect on the cOGNITion of children with phenylketOnuria) | Phenylketonuria MedDRA version: 16.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Nutritional and Metabolic Diseases [C18] | Trade Name: Kuvan INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | Merck KGaA | NULL | Authorised-recruitment may be ongoing or finished | Female: yes Male: yes | 30 | Phase 4 | Spain;Germany;United Kingdom | ||
| 6 | EUCTR2009-015844-41-DE (EUCTR) | 10/09/2013 | 13/06/2013 | A Study of the Long-term Effects on Mental Abilities of 4 to 5 Year-old Children with a Disease Caused by an Enzyme Defect (Phenylketonuria) that Have Been Treated with Kuvan® (a Medicinal Product aimed at Restoring the Defect) for 7 Years. | A Phase IV Open-Label, Single-Cohort Study of the Long-Term Neurocognitive Outcomes in 4 to 5 Year-Old Children with Phenylketonuria Treated with Sapropterin Dihydrochloride (Kuvan®) for 7 Years. - KOGNITO (Kuvan®’s effect on the cOGNITion of children with phenylketOnuria) | Phenylketonuria MedDRA version: 20.0;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850 ;Therapeutic area: Diseases [C] - Nutritional and Metabolic Diseases [C18] | Trade Name: Kuvan INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd. | NULL | Authorised-recruitment may be ongoing or finished | Female: yes Male: yes | 60 | Human pharmacology (Phase 1): no Therapeutic exploratory (Phase 2): no Therapeutic confirmatory - (Phase 3): no Therapeutic use (Phase 4): yes | Spain;Germany;Italy;United Kingdom | ||
| 7 | EUCTR2009-015844-41-IT (EUCTR) | 02/09/2013 | 25/06/2013 | A Study of the Long-term Effects on Mental Abilities of 4 to 5 Year-old Children with a Disease Caused by an Enzyme Defect (Phenylketonuria) that Have Been Treated with Kuvan® (a Medicinal Product aimed at Restoring the Defect) for 7 Years. | A Phase IV Open-Label, Single-Cohort Study of the Long-Term Neurocognitive Outcomes in 4 to 5 Year-Old Children with Phenylketonuria Treated with Sapropterin Dihydrochloride (Kuvan®) for 7 Years. - KOGNITO (Kuvan®’s effect on the cOGNITion of children with phenylketOnuria) | Phenylketonuria MedDRA version: 14.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Nutritional and Metabolic Diseases [C18] | Trade Name: Kuvan INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | Merck KGaA | NULL | Authorised-recruitment may be ongoing or finished | Female: yes Male: yes | 30 | Phase 4 | Spain;Germany;United Kingdom;Italy | ||
| 8 | EUCTR2009-015844-41-GB (EUCTR) | 25/07/2013 | 13/06/2013 | A Study of the Long-term Effects on Mental Abilities of 4 to 5 Year-old Children with a Disease Caused by an Enzyme Defect (Phenylketonuria) that Have Been Treated with Kuvan® (a Medicinal Product aimed at Restoring the Defect) for 7 Years. | A Phase IV Open-Label, Single-Cohort Study of the Long-Term Neurocognitive Outcomes in 4 to 5 Year-Old Children with Phenylketonuria Treated with Sapropterin Dihydrochloride (Kuvan®) for 7 Years. - KOGNITO (Kuvan®’s effect on the cOGNITion of children with phenylketOnuria) | Phenylketonuria MedDRA version: 19.0;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Nutritional and Metabolic Diseases [C18] | Trade Name: Kuvan Product Name: Kuvan INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd. | NULL | Not Recruiting | Female: yes Male: yes | 30 | Phase 4 | Spain;Germany;Italy;United Kingdom | ||
| 9 | NCT01617070 (ClinicalTrials.gov) | May 2012 | 8/6/2012 | Effects of Kuvan on Melatonin Secretion | Pilot Study to Evaluate Melatonin Secretion as a Marker of Decreased Serotonin in Individuals With PKU: Evaluation of the CNS Effects of Tetrahydrobiopterin | Phenylketonuria (PKU) | Drug: Kuvan;Dietary Supplement: Large Neutral Amino Acid Therapy | University of Southern California | BioMarin Pharmaceutical | Completed | 18 Years | N/A | All | 10 | Phase 4 | United States |
| 10 | EUCTR2009-015768-33-DE (EUCTR) | 20/05/2011 | 04/11/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 19.0;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd | NULL | Not Recruiting | Female: yes Male: yes | 56 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 11 | EUCTR2009-015768-33-PT (EUCTR) | 13/05/2011 | 16/12/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 14.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 10010331 - Congenital, familial and genetic disorders;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | Merck Serono S.A. - Geneva | NULL | Authorised-recruitment may be ongoing or finished | Female: yes Male: yes | 50 | Phase 3 | Austria;Italy;Belgium;Netherlands;Turkey;United Kingdom;Slovakia;Germany;Czech Republic;Portugal | ||
| 12 | EUCTR2009-015768-33-NL (EUCTR) | 03/05/2011 | 14/02/2011 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 14.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 10010331 - Congenital, familial and genetic disorders;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrochloride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | Merck Serono S.A. - Geneva | NULL | Not Recruiting | Female: yes Male: yes | 50 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Germany;Netherlands;Italy;United Kingdom | ||
| 13 | EUCTR2009-015768-33-BE (EUCTR) | 16/02/2011 | 19/01/2011 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 18.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd | NULL | Not Recruiting | Female: yes Male: yes | 50 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 14 | EUCTR2009-015768-33-SK (EUCTR) | 10/02/2011 | 03/11/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 18.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd | NULL | Not Recruiting | Female: yes Male: yes | 50 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 15 | EUCTR2009-015768-33-AT (EUCTR) | 05/01/2011 | 25/11/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 18.1;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd | NULL | Not Recruiting | Female: yes Male: yes | 54 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 16 | EUCTR2009-015768-33-GB (EUCTR) | 04/01/2011 | 11/10/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 19.0;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850 ;Therapeutic area: Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd. | NULL | Not Recruiting | Female: yes Male: yes | 56 | Human pharmacology (Phase 1): no Therapeutic exploratory (Phase 2): no Therapeutic confirmatory - (Phase 3): yes Therapeutic use (Phase 4): no | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 17 | EUCTR2009-015768-33-CZ (EUCTR) | 15/12/2010 | 10/12/2010 | Safety Paediatric efficAcy phaRmacokinetic with Kuvan® | A Phase IIIb, Multicentre, Open-Label, Randomized, Controlled Study of the Efficacy, Safety, and Population Pharmacokinetics of Sapropterin Dihydrochloride (Kuvan®) in Phenylketonuria (PKU) Patients <4 Years Old - SPARK (Safety Paediatric efficAcy phaRmacokinetic with Kuvan®) | Phenylketonuria MedDRA version: 19.0;Level: LLT;Classification code 10034873;Term: Phenylketonuria (PKU);System Organ Class: 100000004850 | Trade Name: Kuvan Product Name: Sapropterin Dihydrocholoride Product Code: NAP INN or Proposed INN: SAPROPTERIN Other descriptive name: tetrahydrobiopterin | BioMarin International Ltd | NULL | Not Recruiting | Female: yes Male: yes | 56 | Phase 3 | Portugal;Czech Republic;Slovakia;Belgium;Turkey;Austria;Netherlands;Germany;Italy;United Kingdom | ||
| 18 | NCT00688844 (ClinicalTrials.gov) | October 2008 | 29/5/2008 | Nutritional and Neurotransmitter Changes in PKU Subjects on BH4 | Baseline Evaluation and Long-term Follow-up of Nutritional Status and Neurotransmitter Concentrations in Phenylketonuria Patients Initiating Treatment With Sapropterin Dihydrochloride (KuvanTM), a Tetrahydrobiopterin Analog. | Phenylketonuria | Drug: KuvanTM Therapy | Emory University | BioMarin Pharmaceutical;Atlanta Clinical and Translational Science Institute | Completed | 4 Years | N/A | All | 58 | N/A | United States |
| 19 | NCT00432822 (ClinicalTrials.gov) | February 2007 | 7/2/2007 | Long-Term Tetrahydrobiopterin Treatment in PKU Patients of 0-18 Years - Study on Phenylalanine Tolerance and Safety | Double-Blind, Placebo Controlled, Multicentre Study With an Open Label Extension to Evaluate the Efficacy and Safety of Tetrahydrobiopterin (BH4) in Children and Adolescents With Hyperphenylalaninemia Caused by Phenylalanine Hydroxylase Deficiency | Phenylalanine Hydroxylase Deficiencies | Drug: tetrahydrobiopterin (BH4) | Orphanetics Pharma Entwicklungs GmbH | NULL | Terminated | N/A | 18 Years | Both | 50 | Phase 2/Phase 3 | NULL |
| 20 | NCT00355264 (ClinicalTrials.gov) | August 2006 | 19/7/2006 | Safety and Efficacy Study of Phenoptin in Subjects With Hyperphenylalaninemia Due to BH4 Deficiency | Phase 2, Multicenter, Open Label Study of Phenoptin in Subjects With Hyperphenylalaninemia Due to Primary BH4 Deficiency | Tetrahydrobiopterin Deficiencies;Hyperphenylalaninemia, Non-Phenylketonuric | Drug: Phenoptin | BioMarin Pharmaceutical | NULL | Completed | N/A | N/A | All | 12 | Phase 2 | United States;Germany |
| 21 | EUCTR2006-000648-15-AT (EUCTR) | 08/06/2006 | 05/04/2006 | A double-blind, placebo-controlled, multicentre study with an open-label extension to evaluate the efficacy and safety of tetrahydrobiopterin (BH4) in children and adolescents with hyperphenylalaninemia caused by phenylalanine hydroxylase deficiency | A double-blind, placebo-controlled, multicentre study with an open-label extension to evaluate the efficacy and safety of tetrahydrobiopterin (BH4) in children and adolescents with hyperphenylalaninemia caused by phenylalanine hydroxylase deficiency | Hyperphenylalaninemia due to phenylalanine hydroxylase deficiency. Phenotypes: classic phenylketonuria (PKU), mild PKU (MPK) or mild hyperphenylalaninemia (HPA). MedDRA version: 81;Level: LLT;Classification code 10034873 | Product Name: tetrahydrobiopterin Product Code: BH4 INN or Proposed INN: Sapropterin Other descriptive name: n.a. | ORPHANETICS Pharma Entwicklungs- GmbH | NULL | Authorised-recruitment may be ongoing or finished | Female: yes Male: yes | 75 | Austria | |||
| 22 | NCT00244218 (ClinicalTrials.gov) | April 2005 | 25/10/2005 | Response to Phenylketonuria to Tetrahydrobiopterin (BH4) | Response to Phenylketonuria to Tetrahydrobiopterin (BH4) | Phenylketonuria | Drug: tetrahydrobiopterin (BH4) | The University of Texas Medical Branch, Galveston | NULL | Terminated | 10 Years | N/A | All | 57 | Phase 1 | United States |
| 23 | NCT00260000 (ClinicalTrials.gov) | April 2005 | 30/11/2005 | Study of BH4, a New and Simple Treatment of Mild PKU | Study of the Response of Tetrahydrobiopterin on S-Phenylalanine in Patients With PKU Housing the Y414C Mutation | Phenylketonuria | Drug: 5,6,7,8-tetrahydrobiopterin | The Kennedy Institute-National Eye Clinic | Sygekassernes Helsefond | Completed | 8 Years | N/A | Both | 15 | Phase 2 | Denmark |
| 24 | NCT00104247 (ClinicalTrials.gov) | March 2005 | 24/2/2005 | Study to Evaluate the Safety and Efficacy of Phenoptin™ in Subjects With Phenylketonuria Who Have Elevated Phenylalanine Levels | A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety and Efficacy of Phenoptin™ in Subjects With Phenylketonuria Who Have Elevated Phenylalanine Levels | Phenylketonurias | Drug: sapropterin dihydrochloride, 6R-BH4, tetrahydrobiopterin | BioMarin Pharmaceutical | NULL | Completed | 8 Years | N/A | All | 89 | Phase 3 | United States |
| 25 | EUCTR2004-002365-21-DK (EUCTR) | 03/11/2004 | 09/07/2008 | Trial with BH4, a new and simple treatment of phenylketonuria, PKU - BH4 and PKU | Trial with BH4, a new and simple treatment of phenylketonuria, PKU - BH4 and PKU | PKU, phenylketonuria, is a rare, inherited metabolic disease that results in mental retardation if not a very strict low-protein diet is started within the first weeks of life. The conversion of phenylalanine to tyrosine is defect, phe accumulates and leads to brain damage. There are different degrees of severity, reflecting the spectrum of mutant genes. BH4, tetrahydrobiopterin, is co-enzym for the conversion of phe to tyrosine. BH4 can lower phe in some patients with milder forms of PKU. | Product Name: tetrahydrobiopterin | John F. Kennedy Institute | NULL | Not Recruiting | Female: yes Male: yes | Denmark | ||||
| 26 | EUCTR2021-003777-63-NL (EUCTR) | 24/11/2021 | BH4 (Kuvan©) treatment in Phenylketonuria - comparing different practices of dosing regimens | Tetrahydrobiopterin (BH4) treatment in Phenylketonuria - comparing different practices of dosing regimen - BH4 dose | Phenylketonuria (PKU; OMIM 261600);Therapeutic area: Diseases [C] - Nutritional and Metabolic Diseases [C18] | Trade Name: Kuvan® (sapropterin dihydrochloride) Product Name: Kuvan® (sapropterin dihydrochloride) Product Code: A16AX07 | University Medical Center Groningen | NULL | NA | Female: yes Male: yes | 28 | Phase 4 | Netherlands |