Related Experiment Videos
Austrian report on longitudinal outcome in phenylketonuria
S Scheibenreiter1, M Tiefenthaler, V Hinteregger
1University Children's Hospital, Vienna, Austria.
Insights
Austrian children with phenylketonuria (PKU) and hyperphenylalaninaemia (HPA) show normal intellectual development due to strict dietary management. However, IQ alone doesn't guarantee dietary compliance, highlighting the need for ongoing patient support.
Area of Science:
- Metabolic disorders
- Pediatric neurology
- Nutritional science
Background:
- Phenylketonuria (PKU) and hyperphenylalaninaemia (HPA) are genetic metabolic disorders requiring lifelong management.
- Effective treatment, initiated by Horst Bickel, relies heavily on early and consistent dietary control.
Purpose of the Study:
- To evaluate the current treatment status and outcomes of Austrian children with PKU and HPA.
- To assess the correlation between intellectual development and dietary adherence in these patients.
Main Methods:
- Investigated 70 children (60 PKU, 10 HPA) aged 6-16 years for somatic and intellectual parameters.
- Compared IQ data of PKU patients with their healthy siblings at age 6.
- Analyzed factors influencing intellectual outcomes in PKU patients.
Main Results:
- Austrian PKU and HPA patients exhibit normal intellectual development (mean IQs 95.40 and 101.85, respectively) due to strict dietary control, particularly in early childhood.
- Significant correlations were observed between IQ measurements and healthy siblings at age 6.
- Normal IQ values do not solely guarantee the quality of dietary control, as IQ is multifactorial.
Conclusions:
- While Austrian PKU patients achieve normal IQs, this metric is insufficient to confirm optimal dietary adherence.
- Maintaining and improving dietary compliance necessitates comprehensive patient and family education and robust psychosocial support.
- Ongoing informative counseling is crucial for long-term management of PKU and HPA.
Abstract:
Forty years after Horst Bickel first treated a patient suffering from phenylketonuria (PKU) our aim is to assess the current treatment of Austrian patients. A total of 70 children -60 with PKU and 10 with hyperphenylalaninaemia (HPA)-aged 6-16 years were investigated in terms of somatic and intellectual parameters. Their development is normal (PKU: mean IQ = 95.40; HPA: mean IQ = 101.85) owing to strict dietary control, above all during their first 6 years of life. A comparison of the IQ data of 17 PKU children and their healthy siblings at the age 6 years showed significant correlations in verbal, performance and IQ measurements. Austrian PKU patients do achieve normal IQ values but these measurements fail to guarantee the quality of dietary control. IQ is influenced by a number of variables: genetic, social environment, education and furtherance, motivation for performance, etc., and, in PKU patients, dietary control. The only currently known way of maintaining and improving dietary compliance in PKU patients and their families remains good informative counselling about the disease and psychosocial support.