Evidence map›Paper›PMID 22120496›Full record

ArticleInternational journal of cancer2012

Estimated phytanic acid intake and prostate cancer risk: a prospective cohort study.

Margaret E Wright, Phyllis Bowen, Jarmo Virtamo, Demetrius Albanes, Peter H Gann

Open access · greenAbstract read
In one paragraph

Article in International journal of cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 4 pooled it
1.4field-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

18 citing papers in PubMed, 4 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Dietary factors and risk for advanced prostate cancer.European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) · 2014
    Pooled it
  5. Calcium Activation of the Androgen Receptor in Prostate Cells.International journal of endocrinology · 2023
    Article
  6. Article
  7. Review
  8. Article
  9. 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
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. [Prevention of uro-oncological diseases].Der Urologe. Ausg. A · 2012
    Article
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

5 authors at 4 institutions in 2 countries.

Margaret E WrightDepartment of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA. mewright@uic.edu
Phyllis Bowen
Jarmo Virtamo
Demetrius Albanes
Peter H Gann
University of Illinois Chicago · USFinnish Institute for Health and Welfare · FIIn-Q-Tel · USUnited States Department of Health and Human Services · US

Funding

Etiologic Studies of Prostate CancerZIACP010221 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI ALBANES, DEMETRIUS · 2011 to 2019
$4.1M
Intramural NIH HHS ZIA CP010221
6 · The paper itself

Abstract

Phytanic acid is a saturated fatty acid found predominantly in red meat and dairy products and may contribute to increases in prostate cancer risk that are observed with higher intakes of these foods. We constructed a novel summary measure of phytanic acid intake and prospectively examined its association with prostate cancer risk in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study--a cohort of Finnish male smokers aged 50-69 years. Diet was assessed at baseline in 27,111 participants using a validated 276-item dietary questionnaire. Since phytanic acid is not currently included in food composition tables, we used the published phytanic acid content of 151 major food items to estimate total daily intake. During up to 21 years of follow-up, a total of 1,929 incident prostate cancer cases (including 438 advanced cases) were identified. Higher phytanic acid intake, though unrelated to the risk of localized disease [relative risks (RR) and 95% confidence intervals (CI) for increasing quartiles of intake = 1.00 (ref), 0.83 (0.68-1.01), 0.76 (0.62-0.94) and 0.91 (0.74-1.13); p trend = 0.23], was associated with increased risks of advanced prostate cancer [RR and 95% CI = 1.00 (ref), 1.43 (1.09-1.89), 1.31 (0.99-1.75) and 1.38 (1.02-1.89); p trend = 0.06]. This association appeared to be driven predominantly by phytanic acid obtained from dairy products (particularly butter). Our study indicates that phytanic acid may contribute to previously observed associations between high-fat animal foods (particularly dairy products) and prostate cancer risk, although some caution is warranted as it may be acting as a surrogate marker of dairy fat.

Indexed as

AgedCohort StudiesDietary FatsHumansMaleMiddle AgedPhytanic AcidProspective StudiesProstatic NeoplasmsRiskDietary FatsPhytanic Acid

Identifiers

PMID22120496
PMCPMC4415360
OpenAlexW2085161043

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.