- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT01879995
Phenylketonuria and Hyperphenylalaninemia Nutrition Study
Nutrition Status of Adult and Adolescent Patients With Classical Phenylketonuria (PKU) and Hyperphenylalaninemia
The mainstay of PKU treatment is a low-phenylalanine diet (i.e restriction of natural protein), and supplementation with a protein substitute (a mixture of amino acids free from phenylalanine, also containing micronutrients and vitamins) and special low-protein foods, to meet the patient's energy requirements. When diet and treatment is relaxed after childhood, adult and adolescent patients with phenylketonuria are at risk for malnutrition, depending on the compliance with treatment and the intake of amino acid supplements.
In this study, nutrition status of patients with PKU and hyperphenylalaninemia is systematically assessed under ongoing current treatment, in relation to Phe-tolerance, compliance with treatment, and psychosocial issues.
Study participants do not undergo any specific therapeutic or diagnostic intervention.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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Zurich, Suisse, CH-8032
- University Children's Hospital
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ZH
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Zurich, ZH, Suisse, 8091
- University Hospital Zurich, Division of Endocrinology, Diabetes and Clinical Nutrition
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion criteria:
- PKU (Phenylketonuria) or hyperphenylalaninemia
- male or female, minimum age 16y
- signed informed consent
Exclusion criteria:
- patient who can not comply with the study protocol (e.g. unable to fill in questionnaires by themselves or a representative)
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Macronutrient and micronutrient intake, calculated from a nutrition protocol (four consecutive days)
Délai: assessed during 4 consecutive days max. within 1 month after a regular consultation in the outpatient clinic
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Assessed nutrients: Macronutrients: protein, fat, carbohydrates in g/kg/d Daily phenylalanine and tyrosine intake Micronutrients and minerals: Calcium, magnesium, iron, zinc, selenium Vitamins: D, B12, B6, C, folic acid |
assessed during 4 consecutive days max. within 1 month after a regular consultation in the outpatient clinic
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Phenylalanine level (umol/l)
Délai: assessed at the end of the four-day nutrition protocol (see primary outcome)
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this outcome measure is not study-specific and is collected as part of established routine care (self-measurement by patient)
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assessed at the end of the four-day nutrition protocol (see primary outcome)
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Plasma amino acid profile
Délai: determined at a routine visit at the outpatient clinic, on average 1x per year
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this outcome measure is not study-specific and is collected as part of established routine care.
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determined at a routine visit at the outpatient clinic, on average 1x per year
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Concentrations of micronutrients, minerals and vitamins
Délai: determined at a routine visit at the outpatient clinic, on average 1x per year
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assessed parameters: Ferritin, zinc, selenium, vitamin D, vitamin B12, folic acid. These outcome measures are not study-specific and are collected as part of established routine care |
determined at a routine visit at the outpatient clinic, on average 1x per year
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body weight (kg)
Délai: determined at a routine visit at the outpatient clinic, on average once every 6 - 12 months
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assessed as part of routine clinical care
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determined at a routine visit at the outpatient clinic, on average once every 6 - 12 months
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Michel Hochuli, MD PhD, University Hospital Zurich, Division of Endocrinology, Diabetes and Clinical Nutrition
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- KEK-ZH-Nr. 2013-0120
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