Evidence map›Paper›PMID 20427733›Full record

ArticleThe American journal of clinical nutrition2010

Plasma phytanic acid concentration and risk of prostate cancer: results from the European Prospective Investigation into Cancer and Nutrition.

Alison J Price, Naomi E Allen, Paul N Appleby, Francesca L Crowe, Mazda Jenab, Sabina Rinaldi, Nadia Slimani, Rudolf Kaaks, Sabine Rohrmann, Heiner Boeing and 21 more

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in The American journal of clinical nutrition, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 18% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  4. Article
  5. Review
  6. Phytol and its metabolites phytanic and pristanic acids for risk of cancer: current evidence and future directions.European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) · 2020
    Review
  7. Article
  8. Article
  9. Article
  10. Article
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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

31 authors at 16 institutions in 7 countries.

Alison J PriceNuffield Department of Clinical Medicine, University of Oxford, United Kingdom. alison.price@ceu.ox.ac.uk <alison.price@ceu.ox.ac.uk>
Naomi E Allen
Paul N Appleby
Francesca L Crowe
Mazda Jenab
Sabina Rinaldi
Nadia Slimani
Rudolf Kaaks
Sabine Rohrmann
Heiner Boeing
Tobias Pischon
Vassiliki Benetou
Androniki Naska
Antonia Trichopoulou
Domenico Palli
Sabina Sieri
Rosario Tumino
Paolo Vineis
H Bas Bueno-de-Mesquita
Ignacio Donate
Carlos A González
Maria-José Sánchez
Maria-Dolores Chirlaque
Eva Ardanaz
Nerea Larrañaga
Kay-Tee Khaw
Sheila Rodwell
Valentina Gallo
Dominique S Michaud
Elio Riboli
Timothy J Key
University of Oxford · GBCentre international de recherche sur le cancer · FRNational and Kapodistrian University of Athens · GRGerman Institute of Human Nutrition · DEImperial College London · GBUniversity of Cambridge · GBAndalusian School of Public Health · ESAzienda Usl 8 Arezzo · ITBasque Government · ESFondazione IRCCS Istituto Nazionale dei Tumori · ITGerman Cancer Research Center · DEInstitut Català d'Oncologia · ESInstitute for Scientific Interchange · ITInstituto de Salud Pública de Navarra · ESIstituto per lo Studio e la Prevenzione Oncologica · ITRegional Health · US

Funding

British Heart FoundationCancer Research UKDepartment of HealthMedical Research Council G0401527Medical Research Council G0802851Medical Research Council MC_U105630924Wellcome Trust
6 · The paper itself

Abstract

backgroundPhytanic acid, a fatty acid predominantly obtained from foods high in ruminant fat, may have a biological role in the up-regulation of the protein alpha-methylacyl-coenzyme A racemase, which is overexpressed in prostate cancer tissue.

objectiveThis study aimed to examine the association between plasma concentrations of phytanic acid and subsequent risk of prostate cancer.

designWithin the European Prospective Investigation into Cancer and Nutrition cohort, 566 incident prostate cancer cases from Germany, Greece, Italy, the Netherlands, Spain, and the United Kingdom were individually matched to 566 controls by study center, age at recruitment, and time of day and duration of fasting at blood collection. Phytanic acid concentrations were measured by using a gas chromatography-mass spectrometry assay.

resultsIn controls, plasma phytanic acid concentration was strongly correlated with dairy fat intake (r = 0.49, P < 0.0001), varied significantly by country (P for heterogeneity < 0.0001), and decreased with age (P for trend = 0.02) and duration of fasting at blood collection (P for trend = 0.002). There was no significant association of phytanic acid with prostate cancer risk overall (odds ratio for a doubling in concentration: 1.05; 95% CI: 0.91, 1.21; P for trend = 0.53) or by stage or grade of disease. However, in men who had fasted (>3 h) at blood collection, the odds ratio for prostate cancer was 1.27 (95% CI: 1.01, 1.60; P for trend = 0.04).

conclusionPlasma phytanic acid concentration is significantly associated with intake of dairy fat but not with overall risk of prostate cancer in this European population.

Indexed as

AdultAgedCase-Control StudiesChi-Square DistributionEuropeGas Chromatography-Mass SpectrometryHumansMaleMiddle AgedNeoplasm StagingPhytanic AcidProspective StudiesProstatic NeoplasmsPhytanic Acid

Identifiers

PMID20427733
PMCPMC5749610
OpenAlexW2097773973

What OpenQuestion holds

Textmetadata
LicenceTDM
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.