Evidence map›Paper›PMID 22983262›Full record

ArticleEpigenetics2012

Novel target genes and a valid biomarker panel identified for cholangiocarcinoma.

Kim Andresen, Kirsten Muri Boberg, Hege Marie Vedeld, Hilde Honne, Merete Hektoen, Chrisopher A Wadsworth, Ole Petter Clausen, Tom Hemming Karlsen, Aksel Foss, Oystein Mathisen and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Epigenetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 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

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 79 citations in OpenAlex.

  1. Biomarkers for the Diagnosis of Cholangiocarcinoma: A Systematic Review.The American journal of tropical medicine and hygiene · 2018
    Pooled it
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  17. Current challenges to underpinning the genetic basis for cholangiocarcinoma.Expert review of gastroenterology & hepatology · 2021
    Review
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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

13 authors at 4 institutions in 5 countries.

Kim AndresenDepartment of Cancer Prevention, Institute for Cancer Research, Oslo University Hospital, The Norwegian Radiumhospital, Oslo, Norway.
Kirsten Muri Boberg
Hege Marie Vedeld
Hilde Honne
Merete Hektoen
Chrisopher A Wadsworth
Ole Petter Clausen
Tom Hemming Karlsen
Aksel Foss
Oystein Mathisen
Erik Schrumpf
Ragnhild A Lothe
Guro E Lind
Oslo University Hospital · NODiabetes Australia · AUUniversity Gastroenterology · USUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cholangiocarcinoma is notoriously difficult to diagnose, and the mortality rate is high due to late clinical presentation. CpG island promoter methylation is frequently seen in cancer development. In the present study, we aimed at identifying novel epigenetic biomarkers with the potential to improve the diagnostic accuracy of cholangiocarcinoma. Microarray data analyses of cholangiocarcinoma cell lines treated with epigenetic drugs and their untreated counterparts were compared with previously published gene expression profiles of primary tumors and with non-malignant controls. Genes responding to the epigenetic treatment that were simultaneously downregulated in primary cholangiocarcinoma compared with controls (n = 43) were investigated for their promoter methylation status in cancer cell lines from the gastrointestinal tract. Genes commonly methylated in cholangiocarcinoma cell lines were subjected to quantitative methylation-specific polymerase chain reaction in a total of 93 clinical samples (cholangiocarcinomas and non-malignant controls). CDO1, DCLK1, SFRP1 and ZSCAN18, displayed high methylation frequencies in primary tumors and were unmethylated in controls. At least one of these four biomarkers was positive in 87% of the tumor samples, with a specificity of 100%. In conclusion, the novel methylation-based biomarker panel showed high sensitivity and specificity for cholangiocarcinoma. The potential of these markers in early diagnosis of this cancer type should be further explored.

Indexed as

Bile Ducts, IntrahepaticBile Duct NeoplasmsBiomarkers, TumorCase-Control StudiesCell Line, TumorCholangiocarcinomaCpG IslandsCysteine DioxygenaseDNA-Binding ProteinsDNA MethylationDoublecortin-Like KinasesDown-RegulationEpigenesis, GeneticGene Expression Regulation, NeoplasticGenes, NeoplasmHumansBiomarkers, TumorCDO1 protein, humanCysteine DioxygenaseDCLK1 protein, humanDNA-Binding ProteinsDoublecortin-Like KinasesIntercellular Signaling Peptides and ProteinsIntracellular Signaling Peptides and ProteinsMembrane ProteinsProtein Serine-Threonine KinasesSecreted Frizzled-Related ProteinsSFRP1 protein, humanZSCAN18 protein, human

Identifiers

PMID22983262
PMCPMC3499326
OpenAlexW2125293263

What OpenQuestion holds

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LicenceCC BY-NC
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.