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[Phenylketonuria. Treatment and developmental control]
M D Lluch Fernández1, I Ramos Sánchez, C Marchante Cobos
1Departamento de Pediatría, Hospital Universitario, Sevilla.
Insights
Early diagnosis and treatment of phenylketonuria (PKU) in children leads to better dietary compliance and normal development. Late diagnosis is associated with lower IQ scores and abnormal EEG findings.
Area of Science:
- Biochemistry
- Pediatrics
- Genetics
Context:
- Phenylketonuria (PKU) is an inherited metabolic disorder requiring lifelong dietary management.
- Early intervention is crucial for optimal neurodevelopmental outcomes in PKU patients.
- Long-term compliance and developmental trajectories in early vs. late-diagnosed PKU cohorts are not fully elucidated.
Purpose:
- To compare the long-term compliance, growth parameters, electroencephalogram (EEG) findings, and intelligence quotient (IQ) scores in children with PKU based on their age at diagnosis and treatment initiation.
- To assess the impact of early dietary intervention on the neurocognitive and physical development of children with phenylketonuria.
Summary:
- This study evaluated 16 children with phenylketonuria, comparing those diagnosed and treated early with those diagnosed later. Annual assessments included dietary compliance, weight, height, head circumference, EEG, and IQ scores.
- Children treated early demonstrated good dietary compliance, while those treated later showed poor compliance. All children had normal height and head circumference, with a tendency towards obesity in older children.
- A significant proportion of children diagnosed later (77%) had IQ scores below 80, and 55% exhibited slow basal activity on EEG, indicating potential neurodevelopmental impairment.
Impact:
- Findings highlight the critical importance of early diagnosis and consistent management of phenylketonuria to prevent cognitive deficits.
- This research underscores the long-term benefits of timely intervention, improving quality of life for individuals with PKU.
- The study provides valuable data for pediatricians and metabolic specialists in optimizing PKU management strategies.
Abstract:
We evaluated annually the compliance of dietary restriction, weight, height, head circumference EEG and IQ score on 16 children with phenylketonuria comparing the children diagnosed early with those later. The compliance was good in children treated early and bad in the others. Height and head circumference was normal in all children and we found a tendency towards obesity in the older ones. The IQ score was lower than 80 in 77% of the children diagnosed later and in those the EEG showed slow basal activity in 55%.