SynthesisNeuropsychology review2007
Meta-analysis of neuropsychological symptoms of adolescents and adults with PKU.
Synthesis in Neuropsychology review, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
67 citing papers in PubMed, 4 syntheses or guidelines pooled it, 185 citations in OpenAlex.
- Intelligence quotient scores among early-treated phenylketonuria patients: results from a systematic literature review.Orphanet journal of rare diseases · 2025Pooled it
- Efficacy and safety of sapropterin dihydrochloride in patients with phenylketonuria: A meta-analysis of randomized controlled trials.British journal of clinical pharmacology · 2019Pooled it
- A systematic review of cognitive functioning in early treated adults with phenylketonuria.Orphanet journal of rare diseases · 2018Pooled it
- Systematic Review and Meta-Analysis of Neuropsychiatric Symptoms and Executive Functioning in Adults With Phenylketonuria.Developmental neuropsychologyPooled it
- Long-term developmental progression in infants and young children taking sapropterin for phenylketonuria: a two-year analysis of safety and efficacy.Genetics in medicine : official journal of the American College of Medical Genetics · 2015Trial
- A randomized, placebo-controlled, double-blind trial of supplemental docosahexaenoic acid on cognitive processing speed and executive function in females of reproductive age with phenylketonuria: A pilot study.Prostaglandins, leukotrienes, and essential fatty acids · 2011Trial
- Tackling frontal lobe-related functions in PKU through functional brain imaging: a Stroop task in adult patients.Journal of inherited metabolic disease · 2011Trial
- Global Trends in Phenylketonuria Treatment Research, 2000-2025: Bibliometric Analysis.Online journal of public health informatics · 2026Article
- Long-Term Safety and Efficacy of Pegvaliase in Japanese Adults With Phenylketonuria: Final Results of a Phase III Trial.JIMD reports · 2026Article
- Review
- Metabolic Control and Frequency of Clinical Monitoring Among Canadian Children With Phenylalanine Hydroxylase Deficiency: A Retrospective Cohort Study.JIMD reports · 2025Article
- GluN2B suppression restores phenylalanine-induced neuroplasticity and cognition impairments in a mouse model of phenylketonuria.The Journal of clinical investigation · 2025Article
- Factors associated with psycho-behavioral problems among 100 children with phenylketonuria aged 6-18 years.Orphanet journal of rare diseases · 2025Article
- Children and Adolescents with Early Treated Phenylketonuria: Cognitive Development and Fluctuations of Blood Phenylalanine Levels.International journal of environmental research and public health · 2024Article
- First successful outcomes of pegvaliase (PALYNZIQ) in children.BMC medical genomics · 2024Article
- Pharmacodynamics, safety, tolerability and pharmacokinetics of a single oral dose of an engineered phenylalanine ammonia-lyase in patients with phenylketonuria.Molecular genetics and metabolism reports · 2023Article
- Total choline intake and working memory performance in adults with phenylketonuria.Orphanet journal of rare diseases · 2023Article
- Cognitive Functioning in Adults with Phenylketonuria in a Cohort of Spanish Patients.Behavioural neurology · 2023Article
- Expert opinion of an Italian working group on the assessment of cognitive, psychological, and neurological outcomes in pediatric, adolescent, and adult patients with phenylketonuria.Orphanet journal of rare diseases · 2022Article
- Psychopathological Risk Assessment in Children with Hyperphenylalaninemia.Children (Basel, Switzerland) · 2022Article
7 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Phenylketonuria (PKU; OMIM 261600) is an autosomal recessive inborn error of phenylanaline metabolism. PKU is characterized by deficient or defective phenylalanine hydroxylase activity and persistantly increased levels of the essential amino acid phenylalanine in the circulation. The present article examines current understanding of the etiology of PKU, along with a meta-analysis examining neuropsychological and intellectual presentations in continuously treated adolescents and adults. Patients with PKU differed significantly from controls on Full-Scale IQ, processing speed, attention, inhibition, and motor control. Future research utilizing an integrative approach and detailed analysis of specific cognitive domains will assist both the scientist and clinician, and ultimately the patient.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.