Evidence map›Paper›PMID 34220424›Full record

ArticleFrontiers in neuroscience2021

A Retrospective Case Series Analysis of the Relationship Between Phenylalanine: Tyrosine Ratio and Cerebral Glucose Metabolism in Classical Phenylketonuria and Hyperphenylalaninemia.

Colm J McGinnity, Daniela A Riaño Barros, Eric Guedj, Nadine Girard, Christopher Symeon, Helen Walker, Sally F Barrington, Mary Summers, Mervi Pitkanen, Yusof Rahman

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.1field-weighted citation impact, top 25% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Metabolomic changes in children with autism.World journal of clinical pediatrics · 2024
    Article
  3. Engineering Organoids forFrontiers in molecular neuroscience · 2021
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 6 institutions in 2 countries.

Colm J McGinnityKing's College London and Guy's and St Thomas' PET Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.
Daniela A Riaño BarrosSouth London and Maudsley NHS Foundation Trust, London, United Kingdom.
Eric GuedjAPHM, CNRS, Centrale Marseille, Institut Fresnel, Timone Hospital, CERIMED, Nuclear Medicine Department, Aix-Marseille University, Marseille, France.
Nadine GirardAix-Marseille University, APHM, CNRS, CRMBM, Marseille, France.
Christopher SymeonSouth London and Maudsley NHS Foundation Trust, London, United Kingdom.
Helen WalkerSouth London and Maudsley NHS Foundation Trust, London, United Kingdom.
Sally F BarringtonKing's College London and Guy's and St Thomas' PET Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.
Mary SummersSouth London and Maudsley NHS Foundation Trust, London, United Kingdom.
Mervi PitkanenSouth London and Maudsley NHS Foundation Trust, London, United Kingdom.
Yusof RahmanGuy's and St Thomas' NHS Foundation Trust, London, United Kingdom.
King's College London · GBSouth London and Maudsley NHS Foundation Trust · GBAix-Marseille Université · FRCentre de Résonance Magnétique Biologique et Médicale · FRGuy's and St Thomas' NHS Foundation Trust · GBWest London Mental Health NHS Trust · GB

Funding

Medical Research Council MR/N013042/1Wellcome Trust
6 · The paper itself

Abstract

We retrospectively examined the relationship between blood biomarkers, in particular the historical mean phenylalanine to tyrosine (Phe:Tyr) ratio, and cerebral glucose metabolism. We hypothesized that the historical mean Phe:Tyr ratio would be more predictive of cerebral glucose metabolism than the phenylalanine (Phe) level alone. We performed a retrospective case series analysis involving 11 adult classical phenylketonuria/hyperphenylalaninemia patients under the care of an Inherited Metabolic & Neuropsychiatry Clinic who had complained of memory problems, collating casenote data from blood biochemistry, and clinical [

Indexed as

[18F]fluorodeoxyglucose PEThyperphenylalaninemiaintellectual functionphenylalanine:tyrosine ratiophenylketonuria

Identifiers

PMID34220424
PMCPMC8248344
OpenAlexW3173819493

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.