Evidence map›Paper›PMID 26502956›Full record

ReviewBMC cancer2015

Current opinion on the role of testosterone in the development of prostate cancer: a dynamic model.

Xiaohui Xu, Xinguang Chen, Hui Hu, Amy B Dailey, Brandie D Taylor

Abstract readReview
In one paragraph

Review in BMC cancer, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  8. Review
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  12. Observational
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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

5 authors.

Xiaohui XuDepartment of Epidemiology & Biostatistics, School of Public Health, Texas A&M Health Science Center, 205A SRPH Administration Building | MS 1266, 212 Adriance Lab Road, College Station, TX, 77843-1266, USA. xiaohui.xu@sph.tamhsc.edu.
Xinguang ChenDepartment of Epidemiology, College of Public Health and Health Professions and College of Medicine, University of Florida, Gainesville, FL, USA. jimax.chen@phhp.ufl.edu.
Hui HuDepartment of Epidemiology, College of Public Health and Health Professions and College of Medicine, University of Florida, Gainesville, FL, USA. huihu@ufl.edu.
Amy B DaileyHealth Sciences Department, Gettysburg College, Gettysburg, PA, USA. adailey@gettysburg.edu.
Brandie D TaylorDepartment of Epidemiology & Biostatistics, School of Public Health, Texas A&M Health Science Center, 205A SRPH Administration Building | MS 1266, 212 Adriance Lab Road, College Station, TX, 77843-1266, USA. taylor@sph.tamhsc.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSince the landmark study conducted by Huggins and Hodges in 1941, a failure to distinguish between the role of testosterone in prostate cancer development and progression has led to the prevailing opinion that high levels of testosterone increase the risk of prostate cancer. To date, this claim remains unproven. PRESENTATION OF THE HYPOTHESIS: We present a novel dynamic mode of the relationship between testosterone and prostate cancer by hypothesizing that the magnitude of age-related declines in testosterone, rather than a static level of testosterone measured at a single point, may trigger and promote the development of prostate cancer. TESTING THE HYPOTHESIS: Although not easily testable currently, prospective cohort studies with population-representative samples and repeated measurements of testosterone or retrospective cohorts with stored blood samples from different ages are warranted in future to test the hypothesis. IMPLICATIONS OF THE HYPOTHESIS: Our dynamic model can satisfactorily explain the observed age patterns of prostate cancer incidence, the apparent conflicts in epidemiological findings on testosterone and risk of prostate cancer, racial disparities in prostate cancer incidence, risk factors associated with prostate cancer, and the role of testosterone in prostate cancer progression. Our dynamic model may also have implications for testosterone replacement therapy.

Indexed as

Disease ProgressionModels, TheoreticalAnimalsHumansMaleProspective StudiesProstatic NeoplasmsRetrospective StudiesRisk FactorsTestosteroneTestosterone

Identifiers

PMID26502956
PMCPMC4623905

What OpenQuestion holds

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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.