Evidence map›Paper›PMID 37161675›Full record

ArticleBJS open2023

Human gene and microbial analyses in rectal cancer complete responses to radiotherapy.

Arielle Kae Sulit, Kasmira Wilson, John Pearson, Olin K Silander, Shienny Sampurno, Michael Michael, Robert Ramsay, Alexander Heriot, Frank Frizelle, Rachel Violet Purcell

Open access · goldAbstract read
In one paragraph

Article in BJS open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 18% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Review
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

10 authors at 4 institutions in 2 countries.

Arielle Kae SulitSchool of Natural Sciences, Massey University, Auckland, New Zealand.ORCID 0000-0002-3643-3348
Kasmira WilsonDepartment of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.ORCID 0000-0002-4601-5270
John PearsonBiostatistics and Computational Biology Unit, University of Otago, Christchurch, New Zealand.
Olin K SilanderSchool of Natural Sciences, Massey University, Auckland, New Zealand.ORCID 0000-0003-4105-8316
Shienny SampurnoDifferentiation and Transcription Laboratory, Sir Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.
Michael MichaelSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.
Robert RamsayDepartment of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.ORCID 0000-0001-5003-0433
Alexander HeriotDepartment of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.ORCID 0000-0001-9846-8776
Frank FrizelleDepartment of Surgery, University of Otago, Christchurch, New Zealand.
Rachel Violet PurcellDepartment of Surgery, University of Otago, Christchurch, New Zealand.
The University of Melbourne · AUUniversity of Otago · NZMassey University · NZPeter MacCallum Cancer Centre · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe gold standard treatment for locally advanced rectal cancer is total mesorectal excision after preoperative chemoradiotherapy. Response to chemoradiotherapy varies, with some patients completely responding to the treatment and some failing to respond at all. Identifying biomarkers of response to chemoradiotherapy could allow patients to avoid unnecessary treatment-associated morbidity rate. While previous studies have attempted to identify such biomarkers, none have reached clinical utility, which may be due to heterogeneity of the cancer. In this study, potential human gene and microbial biomarkers were explored in a cohort of rectal cancer patients who underwent chemoradiotherapy.

methodsRNA sequencing was carried out on matched tumour and adjacent normal rectum biopsies from patients with rectal cancer with varying chemoradiotherapy responses treated between 2016 and 2019 at two institutions. Enriched genes and microbes from tumours of complete responders were compared with those from tumours of others with lesser response.

resultsIn 39 patients analysed, enriched gene sets in complete responders indicate involvement of immune responses, including immunoglobulin production, B cell activation and response to bacteria (adjusted P values <0.050). Bacteria such as Ruminococcaceae bacterium and Bacteroides thetaiotaomicron were documented to be abundant in tumours of complete responders compared with all other patients (adjusted P value <0.100).

conclusionThese results identify potential genetic and microbial biomarkers of response to chemoradiotherapy in rectal cancer, as well as suggesting a potential mechanism of complete response to chemoradiotherapy that may benefit further testing in the laboratory.

Indexed as

Rectal NeoplasmsChemoradiotherapyHumans

Identifiers

PMID37161675
PMCPMC10170257
OpenAlexW4376132688

What OpenQuestion holds

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LicenceCC BY
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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.