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Behaviour in early treated phenylketonuria: a systematic review
1Phenylketonuria Register, Division of Biochemistry and Metabolism, University College, London, UK. SmithI@gosh-tr.nthames.nhs.uk
European Journal of Pediatrics
|October 24, 2000
Summary
Early treated phenylketonuria (PKU) patients exhibit distinct behavioral patterns compared to peers. These differences, including anxiety and depression, may stem from dietary interventions and neurobiological factors.
Area of Science:
- Neuroscience
- Behavioral Science
- Genetics
Background:
- Phenylketonuria (PKU) is a genetic disorder requiring early dietary intervention.
- Understanding the long-term behavioral impact of PKU management is crucial.
Purpose of the Study:
- To systematically review the literature on behavioral differences in early-treated PKU patients.
- To identify patterns, real-life implications, and contributing factors to behavioral issues in PKU.
Main Methods:
- Systematic literature review of 34 publications.
- Focused analysis on 11 reports from four studies with >20 subjects.
- Examined behavioral differences, patterns, and correlations with intellectual status, phenylalanine control, and social factors.
Main Results:
- Early-treated PKU patients show significant behavioral differences from the general population.
- Consistent patterns observed include higher emotional/neurotic scores and lower anti-social/aggressive scores.
- Associated factors include attention deficit hyperactivity disorder, lower IQ, and poorer phenylalanine control.
Conclusions:
- Behavioral problems in PKU are likely multifactorial.
- Both the stress of dietary management and potential neurobiological impairments contribute.
- Further research is needed to definitively establish causality.