Evidence map›Paper›PMID 22471922›Full record

ArticleBMC cancer2012

Androgen receptor expression predicts breast cancer survival: the role of genetic and epigenetic events.

Kate M Peters, Stacey L Edwards, Shalima S Nair, Juliet D French, Peter J Bailey, Kathryn Salkield, Sandra Stein, Sarah Wagner, Glenn D Francis, Susan J Clark and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
5.0field-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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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  20. Expression of Androgen Receptor in Estrogen Receptor-positive Breast Cancer.Applied immunohistochemistry & molecular morphology : AIMM · 2016
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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

11 authors at 3 institutions in 1 country.

Kate M PetersSchool of Chemistry and Molecular Biosciences, The University of Queensland, St, Lucia 4072 Queensland, Australia.
Stacey L Edwards
Shalima S Nair
Juliet D French
Peter J Bailey
Kathryn Salkield
Sandra Stein
Sarah Wagner
Glenn D Francis
Susan J Clark
Melissa A Brown
The University of Queensland · AUPrincess Alexandra Hospital · AUGarvan Institute of Medical Research · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBreast cancer outcome, including response to therapy, risk of metastasis and survival, is difficult to predict using currently available methods, highlighting the urgent need for more informative biomarkers. Androgen receptor (AR) has been implicated in breast carcinogenesis however its potential to be an informative biomarker has yet to be fully explored. In this study, AR protein levels were determined in a cohort of 73 Grade III invasive breast ductal adenocarcinomas.

methodsThe levels of Androgen receptor protein in a cohort of breast tumour samples was determined by immunohistochemistry and the results were compared with clinical characteristics, including survival. The role of defects in the regulation of Androgen receptor gene expression were examined by mutation and methylation screening of the 5' end of the gene, reporter assays of the 5' and 3' end of the AR gene, and searching for miRNAs that may regulate AR gene expression.

resultsAR was expressed in 56% of tumours and expression was significantly inversely associated with 10-year survival (P = 0.004). An investigation into the mechanisms responsible for the loss of AR expression revealed that hypermethylation of the AR promoter is associated with loss of AR expression in breast cancer cells but not in primary breast tumours. In AR negative breast tumours, mutation screening identified the same mutation (T105A) in the 5'UTR of two AR negative breast cancer patients but not reported in the normal human population. Reporter assay analysis of this mutation however found no evidence for a negative impact on AR 5'UTR activity. The role of miR-124 in regulating AR expression was also investigated, however no evidence for this was found.

conclusionThis study highlights the potential for AR expression to be an informative biomarker for breast cancer survival and sets the scene for a more comprehensive investigation of the molecular basis of this phenomenon.

Indexed as

AdultBreast NeoplasmsCell Line, TumorCohort StudiesDNA MethylationEpigenesis, GeneticFemaleGene Expression Regulation, NeoplasticHumansImmunohistochemistryMiddle AgedNeoplasm ProteinsReceptors, AndrogenRNA, MessengerSurvival AnalysisNeoplasm ProteinsReceptors, AndrogenRNA, Messenger

Identifiers

PMID22471922
PMCPMC3349557
OpenAlexW2170232533

What OpenQuestion holds

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LicenceCC BY
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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.