Evidence map›Paper›PMID 19277044›Full record

ArticleBritish journal of cancer2009

Epigenetic silencing of EphA1 expression in colorectal cancer is correlated with poor survival.

N I Herath, J Doecke, M D Spanevello, B A Leggett, A W Boyd

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

42 citing papers in PubMed, 72 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Eph Receptors in Cancer.Biomedicines · 2023
    Review
  6. The EPH/Ephrin System in Colorectal Cancer.International journal of molecular sciences · 2022
    Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Association Between EphA1 and Tumor Microenvironment in Gastric Carcinoma and its Clinical Significance.Medical science monitor : international medical journal of experimental and clinical research · 2020
    Article
  13. Article
  14. Silencing ofOncology letters · 2019
    Article
  15. Genetic characterization of thymoma.Scientific reports · 2019
    Article
  16. Article
  17. Review
  18. A review on Eph/ephrin, angiogenesis and lymphangiogenesis in gastric, colorectal and pancreatic cancers.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2017
    Article
  19. Article
  20. Article
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 at 3 institutions in 1 country.

N I HerathLeukaemia Foundation Research Laboratory, The Queensland Institute of Medical Research, Brisbane, QLD, Australia. Nirmitha.Herath@qimr.edu.au
J Doecke
M D Spanevello
B A Leggett
A W Boyd
QIMR Berghofer Medical Research Institute · AUUniversity of Queensland · AULeukaemia Foundation of Queensland · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aberrant expression of Eph and ephrin proteins has well-established functions in oncogenesis and tumour progression. We describe EphA1 expression in 6 colorectal cancer (CRC) cell lines, 18 controls and 125 CRC specimens. In addition, a well-characterised cohort of 53 paired normal colon and CRCs was also assessed. Expression of EphA1 mRNA was assessed by quantitative real-time PCR and correlated with protein expression by flow cytometry, immunoprecipitation, western blotting and immunohistochemistry. Significant upregulation (2- to 10-fold) of EphA1 was seen in over 50% of cases (P=0.005) whereas many of the remainder showed downregulation of EphA1. Intriguingly, EphA1 over-expression was more prevalent in stage II compared to stage III CRCs (P=0.02). Low EphA1 expression significantly correlated with poor survival (P=0.02). Epigenetic silencing appeared to explain the loss of EphA1 expression as methylation of the EphA1 CpG island strongly correlated with low EphA1 expression (P<0.01). Furthermore, EphA1 re-expression could be induced by treatment with demethylating agents. Our findings identify EphA1 as a potential prognostic marker in CRC. Although therapies targeting high EphA1 expression seem plausible in CRC, the loss of expression in advanced disease suggests a potential risk that targeted therapy, by selecting for loss of expression, might contribute to disease progression.

Indexed as

Epigenesis, GeneticGene SilencingAzacitidineCell Line, TumorColonColorectal NeoplasmsCpG IslandsDecitabineDNA MethylationHumansImmunohistochemistryPolymerase Chain ReactionPromoter Regions, GeneticReceptor, EphA1AzacitidineDecitabineReceptor, EphA1

Identifiers

PMID19277044
PMCPMC2670002
OpenAlexW1979385264

What OpenQuestion holds

Textmetadata
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.