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Assessment of emotional and cognitive resources of patients with mild hyperphenylalaninemia (mHPA) and phenylketonuria (PKU) and the possible association with dietary management and metabolic adjustment

Assessment of emotional and cognitive resources of patients with mild hyperphenylalaninemia (mHPA) and phenylketonuria (PKU) and the possible association with dietary management and metabolic adjustment

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00032654
Enrollment
60
Registered
2023-09-26
Start date
2021-09-16
Completion date
Unknown
Last updated
2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

ORPHA:716 Phenylketonuria E70.0

Interventions

Group 1: Patients with mHPA and PKU are tested once with the questionnaires and test batteries below. Furthermore, metabolic parameters are examined retrospectively and the results of the annual blood

Sponsors

Universitätsklinik für Kinder und Jugendliche, Leipzig
Lead Sponsor

Eligibility

Sex/Gender
All
Age
10 Years to No maximum

Inclusion criteria

Inclusion criteria: • Patients need to be clinically healthy at the time of the examination (With the exception of the qualifying illness) • Written declaration of consent from the participating person or their legal representative

Exclusion criteria

Exclusion criteria: • Patients with severe psychiatric illnesses • Atypical PKU • Blood loss of 500 ml in the past 3 months • Severe allergic diathesis • Severe organic disease • Acute illness at the time of the examination, especially acute infections • Dystrophy (weight <5th percentile) • Pregnancy, breast-feeding • Unable to understand and sign the informed consent

Design outcomes

Primary

MeasureTime frame
•Mean scores on assessments of emotional resources and psychological distress: •normative data of those questionnaires: o SCL-90®-S - Symptom-Checklist-90®-Standard (Aggression/hostility, anxiety, depression, paranoid thinking, phobic fear, psychoticism, somatization, insecurity in social contact, obsessive-compulsivity, basic psychological stress, intensity of the responses and the number of symptoms) o CBCL/6-18R or YSR/11-18- Child Behaviour Checklist and Youth Self Report (eight problem scales are formed (anxious/depressive, withdrawn/depressed, physical complaints, social problems, thinking, (sleep) and repetitive problems, attention problems, rule-breaking behaviour and aggressive behaviour) and three superordinate scales are calculated (overall abnormalities, internal problems, external problems) o EDI-2 Eating Disorder Inventory-2 (Slimming, bulimia, body dissatisfaction, ineffectiveness, perfectionism, distrust, interoceptive perception, fear of growing up, asceticism, impulse regulation and social insecurity) o FERUS questionnaire for resources and self-management skills (motivation to change, self-observation, active and passive coping, self-efficacy, self-verbalization, hope and social support) o FRKJ 8-16 questionnaire on resources in childhood and adolescence (six personal resources (empathy and perspective-taking, self-efficacy, self-esteem, sense of coherence, optimism and self-control) and four social resources (parental emotional and social support, authoritative parenting style, integration into the peer group and integration at school).

Secondary

MeasureTime frame
• Laboratory parameters: full blood count, electrolytes, amino acid profile in plasma, amino acid profile in dried blood, Fe, ferritin, folic acid, vitamin B12, vitamin EDKA, zinc, selenium, thyroid stimulating hormone (SH), thyroid hormones, fatty acid profile (median and quantiles) at the day of testing: frequency of values outside recommended ranges in the observed distribution and for all observed values. • Form of treatment (off-treatment vs. on treatment: low-protein diet, Kuvan®, Palynziq®) • Mean scores on performance in executive functions (convergent problem solving, working memory (n-back task), flexibility (set shifting), divided attention, Go/No Go and incompatibility (tendency to interference), using the Test Battery for Attentional Performance and the Tower of London Test. • Normative data of the Test Battery for Attentional Performance and the Tower of London Test.

Countries

Germany

Contacts

Public ContactSkadi Beblo

Universitätsklinik für Kinder und Jugendliche, Leipzig

Skadi.Beblo@medizin.uni-leipzig.de+49 (0) 341 97 26853

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026