E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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.
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MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The main objective is to test if patients with the most common Danish mutation leading to mild PKU respond to treatment with BH4 by lowering the phenylalanine in blood. |
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E.2.2 | Secondary objectives of the trial |
The secondary objective is to get a reliable method to test our patients with mild PKU for responsiveness to BH4. We expect later to be able to offer this treatment to the patients.
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E.2.3 | Trial contains a sub-study | Information not present in EudraCT |
E.3 | Principal inclusion criteria |
1. Diagnosed PKU with 2 known mutations in the PAH gene, one of these the Y414C mutation 2. At least 8 years old 3. Receiving dietetic treatment for PKU 4. Informed consent from the parents and or the patient
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E.4 | Principal exclusion criteria |
1. Less than 8 years old
2. Pregnant or planning pregnancy
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E.5 End points |
E.5.1 | Primary end point(s) |
A maximum of 20 patients with the most common Danish mutation leading to mild PKU have fulfilled the testing for responsiveness to treatment with BH4 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Information not present in EudraCT |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | Information not present in EudraCT |
E.8.1.4 | Double blind | Information not present in EudraCT |
E.8.1.5 | Parallel group | Information not present in EudraCT |
E.8.1.6 | Cross over | Information not present in EudraCT |
E.8.1.7 | Other | Information not present in EudraCT |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Information not present in EudraCT |
E.8.2.2 | Placebo | Information not present in EudraCT |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
protein restrictive PKU diet |
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E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | Information not present in EudraCT |
E.8.5 | The trial involves multiple Member States | Information not present in EudraCT |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Information not present in EudraCT |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.7 | Trial has a data monitoring committee | Information not present in EudraCT |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The trial is terminated when the 20.th of the patients has sent the last blood sample for phenylalanine determination. The effect of BH4 is measured by the level of phenylalanine in blood samples taken by the patients or their parents from a fingertip. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |