Evidence map›Paper›PMID 26325106›Full record

Trial reportBritish journal of cancer2015

Analysis of the intra- and intertumoral heterogeneity of hypoxia in pancreatic cancer patients receiving the nitroimidazole tracer pimonidazole.

N C Dhani, S Serra, M Pintilie, J Schwock, J Xu, S Gallinger, R P Hill, D W Hedley

Open access · hybridAbstract readClinical Trial
In one paragraph

Trial report in British journal of cancer, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
3.3field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 73 citations in OpenAlex.

  1. Trial
  2. Article
  3. Hypoxia Impairs CD8Cancers · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. 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

8 authors at 1 institution in 1 country.

N C DhaniDivision of Medical Oncology and Hematology, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
S SerraDepartment of Laboratory Medicine and Pathobiology, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
M PintilieDepartment of Biostatistics, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, M5G 2M9.
J SchwockDepartment of Laboratory Medicine and Pathobiology, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
J XuApplied Molecular Profiling Laboratory, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
S GallingerDivision of Hepato-biliary Pancreatic Surgical Oncology, University Health Network and Mount Sinai Hospital, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
R P HillRadiation Medicine Program, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
D W HedleyDivision of Medical Oncology and Hematology, University Health Network, Princess Margaret Cancer Centre/Ontario Cancer Institute, 610 University Avenue, Toronto, ON, Canada M5G 2M9.
Princess Margaret Cancer Centre · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHypoxia is thought to be an adverse feature of pancreatic cancer, but direct measurement in patients is technically challenging. To address this, we characterised the intra/interpatient heterogeneity of hypoxia in surgical specimens from patients who received the 2-nitroimidazole tracer pimonidazole pre-operatively.

methodsPimondazole was given intravenously 16-20 h before pancreatectomy, and the extent and intratumoral heterogeneity of hypoxia determined by image analysis applied to multiple tissue blocks stained by immunohistochemistry. Intra/interpatient heterogeneity was estimated by variance component analysis.

resultsPimonidazole staining was analysed in 10 tumours. The extent of labelling varied amongst patients (0-26%), with a broader range of hypoxia in the epithelial (1-39%) compared with the stromal (1-13%) compartments. Variance component analysis demonstrated greater inter- than intrapatient variability of hypoxia, and that multiple (4-5) tumour sections are required to provide a consistent evaluation of its extent in individual tumours.

conclusionsThere is significant intra- and intertumoral heterogeneity of hypoxia in pancreatic cancers, and these do not appear to be generally more hypoxic than other cancer types. This study establishes the feasibility to assess hypoxia in pancreatic cancer patients using pimonidazole, but questions the reliability of measurements made using a single tissue section.

Indexed as

Cell HypoxiaAdultAnalysis of VarianceCarcinoma, Pancreatic DuctalFeasibility StudiesFemaleHumansImmunohistochemistryIndicators and ReagentsInjections, IntravenousMaleNitroimidazolesPancreasPancreatectomyPancreatic NeoplasmsPremedicationIndicators and ReagentsNitroimidazolespimonidazole

Identifiers

PMID26325106
PMCPMC4578083
OpenAlexW1275758655

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.