Evidence map›Paper›PMID 16495697›Full record

ArticleAnnals of surgery2006

Expression of carbonic anhydrase IX (CA IX), a hypoxia-related protein, rather than vascular-endothelial growth factor (VEGF), a pro-angiogenic factor, correlates with an extremely poor prognosis in esophageal and gastric adenocarcinomas.

Ann Driessen, Willy Landuyt, Sylvia Pastorekova, Johnny Moons, Laurence Goethals, Karin Haustermans, Philippe Nafteux, Freddy Penninckx, Karel Geboes, Toni Lerut and 1 more

Open access · greenAbstract readComparative Study
In one paragraph

Article in Annals of surgery, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 122 citations in OpenAlex.

  1. Pooled it
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  3. Article
  4. GLUT1 expression, lymphocyte distribution and CD3Journal of experimental & clinical cancer research : CR · 2026
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  13. Carbonic Anhydrases II and IX in Non-ampullary Duodenal Adenomas and Adenocarcinoma.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2021
    Article
  14. Construction and Verification of a Hypoxia-Stemness-Based Gene Signature for Risk Stratification in Esophageal Cancer.Medical science monitor : international medical journal of experimental and clinical research · 2021
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  15. Review
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3 more citing papers are in PubMed but not listed here.

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 3 countries.

Ann DriessenDepartment of Pathology, University Hospital Maastricht, Maastricht, The Netherlands. adri@lpat.azm.nl
Willy Landuyt
Sylvia Pastorekova
Johnny Moons
Laurence Goethals
Karin Haustermans
Philippe Nafteux
Freddy Penninckx
Karel Geboes
Toni Lerut
Nadine Ectors
Maastricht University Medical Centre · NLKU Leuven · BESlovak Academy of Sciences · SK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the expression of carbonic anhydrase IX (CA IX) and vascular-endothelial growth factor (VEGF) in esophageal and gastric adenocarcinomas and in turn with the histologic subtype. SUMMARY BACKGROUND DATA: Tumor hypoxia is an important factor in therapy resistance. A low oxygen concentration in tumors stimulates a.o. the expression of CA IX, a marker of hypoxia, and VEGF, a pro-angiogenic factor.

methodsWe evaluated the immunohistochemical expression of CA IX and VEGF on paraffin-embedded material of 154 resection specimens: 39 esophageal, 73 cardiac, and 42 distal gastric adenocarcinomas (UICC classification). The adenocarcinomas were subtyped according to the Lauren classification (intestinal- and diffuse-type). STATISTICAL ANALYSIS: chi test, Kaplan-Meier survival analysis, log-rank test, and Cox proportional hazards model.

resultsCA IX and VEGF expression were independent of the localization of the tumor. However, intestinal-type adenocarcinomas showed a significantly higher expression of CA IX as well as VEGF than diffuse-type tumors. VEGF expression was associated with a high microvessel density. Although survival analysis showed that CA IX expression (P = 0.008) as well as the coexpression of CA IX and VEGF (P = 0.008) correlate with a poor outcome, only CA IX expression is an independent prognostic factor for overall survival and metastasis-free survival.

conclusionThe difference in expression of CA IX and VEGF between intestinal- and diffuse-type adenocarcinomas may possibly explain the different clinical behavior of these tumors. CA IX expression, rather than VEGF positivity in tumors, enables the identification of a subpopulation, characterized by a more aggressive behavior and a poorer prognosis.

Indexed as

AdenocarcinomaAdultAgedAged, 80 and overAntigens, NeoplasmBiomarkers, TumorCarbonic Anhydrase IXCarbonic AnhydrasesDisease ProgressionEsophageal NeoplasmsFemaleHumansImmunohistochemistryMaleMiddle AgedNeoplasm StagingAntigens, NeoplasmBiomarkers, TumorCA9 protein, humanCarbonic Anhydrase IXCarbonic AnhydrasesVascular Endothelial Growth Factor A

Identifiers

PMID16495697
PMCPMC1448952
OpenAlexW2010803278

What OpenQuestion holds

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Registered trials

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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.