Evidence map›Paper›PMID 24939588›Full record

ArticleEuropean journal of human genetics : EJHG2015

Linking genotypes database with locus-specific database and genotype-phenotype correlation in phenylketonuria.

Sarah Wettstein, Jarl Underhaug, Belen Perez, Brian D Marsden, Wyatt W Yue, Aurora Martinez, Nenad Blau

Open access · bronzeAbstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 98 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. DNAJC12 Stabilizes Phenylalanine Hydroxylase and Facilitates Its Substrate-Dependent Activation.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  4. Analysis ofInternational journal of molecular sciences · 2026
    Article
  5. Observational
  6. Mapping the Severity of Phenylalanine Hydroxylase Deficiency.Journal of inherited metabolic disease · 2026
    Review
  7. Review
  8. Current state of the treatment landscape of phenylketonuria.Orphanet journal of rare diseases · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Diagnostics (Basel, Switzerland) · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. 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

7 authors at 5 institutions in 5 countries.

Sarah WettsteinDivision of Metabolism, University Children's Hospital, Zürich, Switzerland.
Jarl UnderhaugDepartment of Biomedicine, University of Bergen, Bergen, Norway.
Belen PerezCentro de Diagnóstico de Enfermedades Moleculares, Centro de Biologia Molecular UAM-CSIC, CIBERER, IDIPAZ Universidad Autonoma de Madrid, Madrid, Spain.
Brian D MarsdenStructural Genomics Consortium, University of Oxford, Oxford, UK.
Wyatt W YueStructural Genomics Consortium, University of Oxford, Oxford, UK.
Aurora MartinezDepartment of Biomedicine, University of Bergen, Bergen, Norway.
Nenad Blau1] Division of Metabolism, University Children's Hospital, Zürich, Switzerland [2] Division of Inborn Metabolic Diseases, University Children's Hospital, Heidelberg, Germany.
Genomics (United Kingdom) · GBUniversity of Bergen · NOUniversidad Autónoma de Madrid · ESUniversity Children's Hospital Zurich · CHUniversity Hospital Heidelberg · DE

Funding

Wellcome Trust 092809
6 · The paper itself

Abstract

The wide range of metabolic phenotypes in phenylketonuria is due to a large number of variants causing variable impairment in phenylalanine hydroxylase function. A total of 834 phenylalanine hydroxylase gene variants from the locus-specific database PAHvdb and genotypes of 4181 phenylketonuria patients from the BIOPKU database were characterized using FoldX, SIFT Blink, Polyphen-2 and SNPs3D algorithms. Obtained data was correlated with residual enzyme activity, patients' phenotype and tetrahydrobiopterin responsiveness. A descriptive analysis of both databases was compiled and an interactive viewer in PAHvdb database was implemented for structure visualization of missense variants. We found a quantitative relationship between phenylalanine hydroxylase protein stability and enzyme activity (r(s) = 0.479), between protein stability and allelic phenotype (r(s) = -0.458), as well as between enzyme activity and allelic phenotype (r(s) = 0.799). Enzyme stability algorithms (FoldX and SNPs3D), allelic phenotype and enzyme activity were most powerful to predict patients' phenotype and tetrahydrobiopterin response. Phenotype prediction was most accurate in deleterious genotypes (≈ 100%), followed by homozygous (92.9%), hemizygous (94.8%), and compound heterozygous genotypes (77.9%), while tetrahydrobiopterin response was correctly predicted in 71.0% of all cases. To our knowledge this is the largest study using algorithms for the prediction of patients' phenotype and tetrahydrobiopterin responsiveness in phenylketonuria patients, using data from the locus-specific and genotypes database.

Indexed as

Databases, GeneticGenetic Association StudiesGenotypePhenotypeAllelesFemaleGene FrequencyHumansMaleMutationPhenylketonurias

Identifiers

PMID24939588
PMCPMC4326710
OpenAlexW2021044954

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Registered trials

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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.