Evidence map›Paper›PMID 28097409›Full record

ArticleWorld journal of surgery2017

Genetic and Epigenetic Intra-tumour Heterogeneity in Colorectal Cancer.

Huw Geraint Jones, Gareth Jenkins, Namor Williams, Paul Griffiths, Phil Chambers, John Beynon, Dean Harris

Abstract read
In one paragraph

Article in World journal of surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  16. Heterogeneity in Colorectal Cancer: A Challenge for Personalized Medicine?International journal of molecular sciences · 2018
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  19. Optimal detection of clinically relevant mutations in colorectal carcinoma: sample pooling overcomes intra-tumoral heterogeneity.Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc · 2018
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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

7 authors.

Huw Geraint JonesDepartment of Colorectal Surgery, Singleton Hospital, Abertawe Bro Morgannwg University Local Health Board, Sketty Lane, Swansea, SA2 8QA, UK. huwgjones@hotmail.com.ORCID 0000-0003-0365-9049
Gareth JenkinsInstitute of Life Science, Singleton Park, Swansea University, Swansea, SA2 8PP, UK.
Namor WilliamsDepartment of Pathology, Singleton Hospital, Abertawe Bro Morgannwg University Local Health Board, Sketty Lane, Swansea, SA2 8QA, UK.
Paul GriffithsDepartment of Pathology, Singleton Hospital, Abertawe Bro Morgannwg University Local Health Board, Sketty Lane, Swansea, SA2 8QA, UK.
Phil ChambersLeeds Institute of Cancer and Pathology, Wellcome Trust Brenner Building, Level 4, St. James's University Hospital, Leeds, LS9 7TF, UK.
John BeynonDepartment of Colorectal Surgery, Singleton Hospital, Abertawe Bro Morgannwg University Local Health Board, Sketty Lane, Swansea, SA2 8QA, UK.
Dean HarrisDepartment of Colorectal Surgery, Singleton Hospital, Abertawe Bro Morgannwg University Local Health Board, Sketty Lane, Swansea, SA2 8QA, UK.

Funding

Cancer Research UK 15956
6 · The paper itself

Abstract

introductionColorectal cancer (CRC) is a highly heterogeneous disease, with pathologically similar cancers having completely different responses to treatment and patient survival. Intra-tumour heterogeneity (defined as distinct morphological and phenotypic differences) has recently been demonstrated to be an important factor in the development and behaviour of cancer cells and can be used to determine response to anticancer therapy.

methodPatients with resected CRC had DNA extracted from eight defined tumour areas which were analysed for two genetic mutations (BRAF and KRAS) and one epigenetic trait (CpG island methylator phenotype/CIMP). Normal adjacent tissue was studied as control.

resultsTwelve patients with CRC were included. Intra-tumoural heterogeneity for KRAS mutation was seen in 2 patients (17%). There was no statistical evidence of CIMP status heterogeneity (p = 0.85), but 6 of the 12 patients (50%) demonstrated at least one heterogeneous area within the tumour. DISCUSSION: Intra-tumoural heterogeneity for both genetic and epigenetic factors in CRC is more prevalent than previously thought in Stage II and Stage III CRC. This study provides new insight into epigenetic heterogeneity of CRC and supports the development of a more targeted biopsy strategy to support expansion of personalised treatment.

Indexed as

AgedAged, 80 and overColorectal NeoplasmsCpG IslandsDNA, NeoplasmFemaleHumansMaleMiddle AgedMutationPhenotypeProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)BRAF protein, humanDNA, NeoplasmKRAS protein, humanProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)

Identifiers

PMID28097409
PMCPMC5394146

What OpenQuestion holds

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LicenceCC BY
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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.