Evidence map›Paper›PMID 23071848›Full record

ArticlePloS one2012

Blood-based biomarkers of aggressive prostate cancer.

Men Long Liong, Chun Ren Lim, Hengxuan Yang, Samuel Chao, Chin Wei Bong, Wing Seng Leong, Prashanta Kumar Das, Chit Sin Loh, Ban Eng Lau, Choon Geok Yu and 7 more

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

19 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  15. Analysis of the transcriptome in molecular epidemiology studies.Environmental and molecular mutagenesis · 2013
    Review
  16. Article
  17. Article
  18. Current status of biomarkers for prostate cancer.International journal of molecular sciences · 2013
    Review
  19. Advancements in Biomarkers of Prostate Cancer: A Review.Technology in cancer research & treatment
    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

17 authors at 4 institutions in 3 countries.

Men Long LiongLam Wah Ee Hospital, Georgetown, Penang, Malaysia.
Chun Ren Lim
Hengxuan Yang
Samuel Chao
Chin Wei Bong
Wing Seng Leong
Prashanta Kumar Das
Chit Sin Loh
Ban Eng Lau
Choon Geok Yu
Edie Jian Jiek Ooi
Robert K Nam
Paul D Allen
Graeme S Steele
Karl Wassmann
Jerome P Richie
Choong Chin Liew
Brigham and Women's Hospital · USHospital Pulau Pinang · MYHealth Sciences Centre · CAUniversity Kebangsaan Malaysia Medical Centre · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeProstate cancer is a bimodal disease with aggressive and indolent forms. Current prostate-specific-antigen testing and digital rectal examination screening provide ambiguous results leading to both under-and over-treatment. Accurate, consistent diagnosis is crucial to risk-stratify patients and facilitate clinical decision making as to treatment versus active surveillance. Diagnosis is currently achieved by needle biopsy, a painful procedure. Thus, there is a clinical need for a minimally-invasive test to determine prostate cancer aggressiveness. A blood sample to predict Gleason score, which is known to reflect aggressiveness of the cancer, could serve as such a test. MATERIALS AND

methodsBlood mRNA was isolated from North American and Malaysian prostate cancer patients/controls. Microarray analysis was conducted utilizing the Affymetrix U133 plus 2·0 platform. Expression profiles from 255 patients/controls generated 85 candidate biomarkers. Following quantitative real-time PCR (qRT-PCR) analysis, ten disease-associated biomarkers remained for paired statistical analysis and normalization.

resultsMicroarray analysis was conducted to identify 85 genes differentially expressed between aggressive prostate cancer (Gleason score ≥8) and controls. Expression of these genes was qRT-PCR verified. Statistical analysis yielded a final seven-gene panel evaluated as six gene-ratio duplexes. This molecular signature predicted as aggressive (ie, Gleason score ≥8) 55% of G6 samples, 49% of G7(3+4), 79% of G7(4+3) and 83% of G8-10, while rejecting 98% of controls.

conclusionIn this study, we have developed a novel, blood-based biomarker panel which can be used as the basis of a simple blood test to identify men with aggressive prostate cancer and thereby reduce the overdiagnosis and overtreatment that currently results from diagnosis using PSA alone. We discuss possible clinical uses of the panel to identify men more likely to benefit from biopsy and immediate therapy versus those more suited to an "active surveillance" strategy.

Indexed as

AgedArea Under CurveBiomarkers, TumorCase-Control StudiesGene Expression ProfilingHumansLogistic ModelsMalaysiaMaleMicroarray AnalysisMiddle AgedNeoplasm GradingNorth AmericaProstatic NeoplasmsReal-Time Polymerase Chain ReactionROC CurveBiomarkers, Tumor

Identifiers

PMID23071848
PMCPMC3461021
OpenAlexW2098618865

What OpenQuestion holds

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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.