Evidence map›Paper›PMID 17213826›Full record

ArticleBritish journal of cancer2007

Hypoxia-regulated carbonic anhydrase IX expression is associated with poor survival in patients with invasive breast cancer.

S A Hussain, R Ganesan, G Reynolds, L Gross, A Stevens, J Pastorek, P G Murray, B Perunovic, M S Anwar, L Billingham and 5 more

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed, 5 pooled it
4.8field-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

92 citing papers in PubMed, 5 syntheses or guidelines pooled it, 193 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  5. Pooled it
  6. Trial
  7. Trial
  8. Tumor Hypoxia: How Conventional Histology Is Reshaped in Breast Carcinoma.International journal of molecular sciences · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Article
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  14. Article
  15. Article
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  17. NSAIDs and Cancer Resolution: New Paradigms beyond Cyclooxygenase.International journal of molecular sciences · 2022
    Review
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  19. Review
  20. Review

32 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 7 institutions in 2 countries.

S A HussainCancer Research UK, Institute For Cancer Studies, University Hospital Birmingham, Edgbaston, Birmingham B15 2TT, UK. s.a.hussain@bham.ac.uk
R Ganesan
G Reynolds
L Gross
A Stevens
J Pastorek
P G Murray
B Perunovic
M S Anwar
L Billingham
N D James
D Spooner
C J Poole
D W Rea
D H Palmer
Cancer Research UK · GBQueen Elizabeth Hospital · GBBirmingham Women's Hospital · GBInstitute of Virology of the Slovak Academy of Sciences · SKNIHR Birmingham Liver Biomedical Research Unit · GBQueen Elizabeth Hospital Birmingham · GBUniversity Hospital Coventry · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tumour hypoxia is a microenvironmental factor related to poor response to radiation, chemotherapy, genetic instability, selection for resistance to apoptosis, and increased risk of invasion and metastasis. Hypoxia-regulated carbonic anhydrase IX (CA IX) has been studied in various tumour sites and its expression has been correlated with the clinical outcome. The purpose of this study was to investigate the correlation of CA IX expression with outcome in patients with invasive breast cancer. We conducted a retrospective study examining the effects of carbonic anhydrase IX (CA IX) on survival in patients with breast cancer. To facilitate the screening of multiple tissue blocks from each patient, tissue microarrays were prepared containing between two and five representative samples of tumour per patient. Immunohistochemistry was used to examine expression of CA IX in patients with breast cancer. The study includes a cohort of 144 unselected patients with early invasive breast cancer who underwent surgery, and had CA IX expression and follow-up data available for analysis. At the time of analysis, there were 28 deaths and median follow-up of 48 months with 96% of patients having at least 2 years of follow-up. CA IX was negative for 107 patients (17 deaths) and positive for 37 patients (11 deaths). Kaplan-Meier survival curves show that survival was superior in the CA IX-negative group with a 2-year survival of 97% for negatives and 83% for positives (log-rank test P=0.01). Allowing for potential prognostic variables in a Cox regression analysis, CA IX remained a significant independent predictor of survival (P=0.035). This study showed in both univariate and multivariate analysis that survival is significantly inferior in patients with tumour expressing CA IX. Prospective studies are underway to investigate this correlation in clinical trial setting.

Indexed as

AdultAgedAged, 80 and overAntigens, NeoplasmBiomarkers, TumorBreast NeoplasmsCarbonic Anhydrase IXCarbonic AnhydrasesData Interpretation, StatisticalFemaleFollow-Up StudiesHumansImmunohistochemistryMiddle AgedNeoplasm InvasivenessNeoplasm StagingAntigens, NeoplasmBiomarkers, TumorCA9 protein, humanCarbonic Anhydrase IXCarbonic Anhydrases

Identifiers

PMID17213826
PMCPMC2360224
OpenAlexW2113790366

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.