Evidence map›Paper›PMID 24450771›Full record

ArticleMicrobiome2013

Co-occurrence of anaerobic bacteria in colorectal carcinomas.

René L Warren, Douglas J Freeman, Stephen Pleasance, Peter Watson, Richard A Moore, Kyla Cochrane, Emma Allen-Vercoe, Robert A Holt

Open access · goldAbstract read
In one paragraph

Article in Microbiome, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 206 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
206citing papers in PubMed, 4 pooled it
14.9field-weighted citation impact, top 1% 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

206 citing papers in PubMed, 4 syntheses or guidelines pooled it, 346 citations in OpenAlex.

  1. Pooled it
  2. The Human Microbiome in Relation to Cancer Risk: A Systematic Review of Epidemiologic Studies.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2020
    Pooled it
  3. World journal of gastroenterology · 2017
    Pooled it
  4. Pooled it
  5. Review
  6. Review
  7. The Phylum Fusobacteriota Is Associated with Colorectal Cancer-Specific Mortality: Results from the Translational Research Program in Cancer Differences across Populations.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2026
    Article
  8. Article
  9. Review
  10. Microbiology spectrum · 2026
    Article
  11. Article
  12. ModellingCurrent research in microbial sciences · 2026
    Article
  13. Review
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  18. The multi-kingdom cancer microbiome.Nature microbiology · 2025
    Review
  19. Article
  20. Article

146 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

8 authors at 3 institutions in 1 country.

René L Warren
Douglas J Freeman
Stephen Pleasance
Peter Watson
Richard A Moore
Kyla Cochrane
Emma Allen-Vercoe
Robert A HoltBC Cancer Agency, Michael Smith Genome Sciences Centre, Vancouver, BC V5Z 1L3, Canada. rholt@bcgsc.ca.
BC Cancer Agency · CACanada's Michael Smith Genome Sciences Centre · CAUniversity of Guelph · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNumerous cancers have been linked to microorganisms. Given that colorectal cancer is a leading cause of cancer deaths and the colon is continuously exposed to a high diversity of microbes, the relationship between gut mucosal microbiome and colorectal cancer needs to be explored. Metagenomic studies have shown an association between Fusobacterium species and colorectal carcinoma. Here, we have extended these studies with deeper sequencing of a much larger number (n = 130) of colorectal carcinoma and matched normal control tissues. We analyzed these data using co-occurrence networks in order to identify microbe-microbe and host-microbe associations specific to tumors.

resultsWe confirmed tumor over-representation of Fusobacterium species and observed significant co-occurrence within individual tumors of Fusobacterium, Leptotrichia and Campylobacter species. This polymicrobial signature was associated with over-expression of numerous host genes, including the gene encoding the pro-inflammatory chemokine Interleukin-8. The tumor-associated bacteria we have identified are all Gram-negative anaerobes, recognized previously as constituents of the oral microbiome, which are capable of causing infection. We isolated a novel strain of Campylobacter showae from a colorectal tumor specimen. This strain is substantially diverged from a previously sequenced oral Campylobacter showae isolate, carries potential virulence genes, and aggregates with a previously isolated tumor strain of Fusobacterium nucleatum.

conclusionsA polymicrobial signature of Gram-negative anaerobic bacteria is associated with colorectal carcinoma tissue.

Identifiers

PMID24450771
PMCPMC3971631
OpenAlexW2122131141

What OpenQuestion holds

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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.