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Cognitive and behavioral development in maternal phenylketonuria offspring

Susan E Waisbren1, Colleen Azen

  • 1Department Psychiatry, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts 02115, USA. susan.waisbren@tch.harvard.edu

Pediatrics
|December 5, 2003
PubMed

Insights

Maternal phenylketonuria (PKU) requires early metabolic control to ensure healthy offspring development. Delays in treatment negatively impact cognitive and behavioral outcomes, highlighting the importance of prenatal care and postnatal support.

Area of Science:

  • Neuroscience
  • Genetics
  • Pediatrics

Background:

  • Phenylketonuria (PKU) is a genetic disorder requiring strict dietary management.
  • Maternal PKU poses risks to fetal development if not managed effectively.
  • Understanding the long-term outcomes of treated maternal PKU is crucial for clinical practice.

Purpose of the Study:

  • To evaluate the cognitive and behavioral development of children born to mothers with treated PKU.
  • To identify factors influencing developmental outcomes in offspring of mothers with PKU.

Main Methods:

  • A prospective, longitudinal study involving 228 children of mothers with treated PKU or mild hyperphenylalaninemia.
  • Comparison with 70 control subjects at 7 years of age.
  • Assessment of cognitive and behavioral outcomes, and home environment stimulation.

Main Results:

  • Offspring cognitive outcome showed a negative correlation with the gestational weeks until maternal metabolic control was achieved (r = -0.61).
  • Behavioral outcomes were similarly affected by delayed maternal metabolic control.
  • Postnatal home environment stimulation was positively related to offspring IQ.

Conclusions:

  • Attaining metabolic control before or early in pregnancy is associated with normal developmental potential in offspring.
  • Delayed maternal metabolic control negatively impacts offspring's cognitive and behavioral development.
  • Interventions focusing on prenatal dietary compliance and postnatal environmental enrichment can mitigate risks associated with maternal PKU.
Abstract

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