Evidence map›Paper›PMID 27449259›Full record

ArticleThe Journal of urology2016

A Whole Blood Assay for AR-V7 and AR

Xichun Liu, Elisa Ledet, Dongying Li, Ary Dotiwala, Allie Steinberger, Allison Feibus, Jianzhuo Li, Yanfeng Qi, Jonathan Silberstein, Benjamin Lee and 3 more

Abstract read
In one paragraph

Article in The Journal of urology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
7.9field-weighted citation impact, top 2% 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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Expression of AR-V7 and ARvClinical cancer research : an official journal of the American Association for Cancer Research · 2019
    Trial
  5. Review
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  11. Article
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  13. Whole bloodTranslational andrology and urology · 2021
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 1 institution in 1 country.

Xichun LiuDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Elisa LedetDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana; Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Dongying LiDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Ary DotiwalaDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana; Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Allie SteinbergerDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana; Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Allison FeibusDepartment of Urology, Tulane University School of Medicine, New Orleans, Louisiana.
Jianzhuo LiDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Yanfeng QiDepartment of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Jonathan SilbersteinDepartment of Urology, Tulane University School of Medicine, New Orleans, Louisiana.
Benjamin LeeDepartment of Urology, Tulane University School of Medicine, New Orleans, Louisiana.
Yan DongDepartment of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Oliver SartorDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana; Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana.
Haitao ZhangDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, Louisiana. Electronic address: hzhang@tulane.edu.
Tulane University · US

Funding

Mentoring a Cancer Genetics ProgramP20GM103518 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI DEININGER, PRESCOTT L. · 2012 to 2013
$4.3M
An inevitable mechanism of resistance to androgen-directed therapyR01CA188609 · NCI · TULANE UNIVERSITY OF LOUISIANA · PI DONG, YAN · 2014 to 2018
$1.6M
NCI NIH HHS R01 CA188609NIGMS NIH HHS P20 GM103518
6 · The paper itself

Abstract

purposeMost prostate cancer mortality can be attributed to metastatic castration resistant prostate cancer, an advanced stage that remains incurable despite recent advances. The AR (androgen receptor) signaling axis remains active in castration resistant prostate cancer. Recent studies suggest that expression of the AR-V (AR splice variant) AR-V7 may underlie resistance to abiraterone and enzalutamide. However, controversy exists over the optimal assay. Our objective was to develop a fast and sensitive assay for AR-Vs in patients. MATERIALS AND

methodsTwo approaches were assessed in this study. The first approach was based on depletion of leukocytes and the second one used RNA purified directly from whole blood preserved in PAXgene® tubes. Transcript expression was analyzed by quantitative reverse transcription-polymerase chain reaction.

resultsThrough a side-by-side comparison we found that the whole blood approach was suitable to detect AR-Vs. The specificity of the assay was corroborated in a cancer-free cohort. Using the PAXgene assay samples from a cohort of 46 patients with castration resistant prostate cancer were analyzed. Overall, AR-V7 and AR

conclusionsTo our knowledge this is the first study to demonstrate that PAXgene preserved whole blood can be used to obtain clinically relevant information regarding the expression of 2 AR-Vs. These data on a castration resistant prostate cancer cohort support a role for AR-Vs in resistance to therapies targeting the AR ligand-binding domain.

Indexed as

AdultAgedCross-Sectional StudiesHumansMaleMiddle AgedProstatic NeoplasmsProstatic Neoplasms, Castration-ResistantProtein IsoformsReceptors, AndrogenAR protein, humanProtein IsoformsReceptors, Androgenandrogenbiomarkersbloodprostatic neoplasmsprotein isoformsreceptorstumor

Identifiers

PMID27449259
PMCPMC5161406
OpenAlexW2491436916

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.