Evidence map›Paper›PMID 25496513›Full record

ArticleEpigenetics2014

Isocitrate dehydrogenase 1 R132C mutation occurs exclusively in microsatellite stable colorectal cancers with the CpG island methylator phenotype.

V L J Whitehall, T D Dumenil, D M McKeone, C E Bond, M L Bettington, R L Buttenshaw, L Bowdler, G W Montgomery, L F Wockner, B A Leggett

Abstract read
In one paragraph

Article in Epigenetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact, top 97% 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

15 citing papers in PubMed, 2 citations in OpenAlex.

  1. Review
  2. Article
  3. Carcinogenesis trajectories.Frontiers in cell and developmental biology · 2025
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  11. Review
  12. Article
  13. Elevated d-2-hydroxyglutarate during colitis drives progression to colorectal cancer.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  14. How theGastroenterology research and practice · 2018
    Review
  15. 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

10 authors at 1 institution in 1 country.

V L J Whitehalla Conjoint Gastroenterology Laboratory; Royal Brisbane and Women's Hospital; Clinical Research Centre and the Queensland Institute of Medical Research (QIMR) ; Brisbane , Australia.
T D Dumenil
D M McKeone
C E Bond
M L Bettington
R L Buttenshaw
L Bowdler
G W Montgomery
L F Wockner
B A Leggett
QIMR Berghofer Medical Research Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The CpG Island Methylator Phenotype (CIMP) is fundamental to an important subset of colorectal cancer; however, its cause is unknown. CIMP is associated with microsatellite instability but is also found in BRAF mutant microsatellite stable cancers that are associated with poor prognosis. The isocitrate dehydrogenase 1 (IDH1) gene causes CIMP in glioma due to an activating mutation that produces the 2-hydroxyglutarate oncometabolite. We therefore examined IDH1 alteration as a potential cause of CIMP in colorectal cancer. The IDH1 mutational hotspot was screened in 86 CIMP-positive and 80 CIMP-negative cancers. The entire coding sequence was examined in 81 CIMP-positive colorectal cancers. Forty-seven cancers varying by CIMP-status and IDH1 mutation status were examined using Illumina 450K DNA methylation microarrays. The R132C IDH1 mutation was detected in 4/166 cancers. All IDH1 mutations were in CIMP cancers that were BRAF mutant and microsatellite stable (4/45, 8.9%). Unsupervised hierarchical cluster analysis identified an IDH1 mutation-like methylation signature in approximately half of the CIMP-positive cancers. IDH1 mutation appears to cause CIMP in a small proportion of BRAF mutant, microsatellite stable colorectal cancers. This study provides a precedent that a single gene mutation may cause CIMP in colorectal cancer, and that this will be associated with a specific epigenetic signature and clinicopathological features.

Indexed as

CpG IslandsMutationAgedAged, 80 and overCluster AnalysisColorectal NeoplasmsDNA MethylationFemaleHumansIsocitrate DehydrogenaseMaleMicrosatellite InstabilityMiddle AgedPhenotypeIDH1 protein, humanIsocitrate DehydrogenaseBRAFCIMPCIMP, CpG Island Methylator Phenotypecolorectal cancerIDH1IDH1, isocitrate dehydrogenase 1microsatelliteMSI, microsatellite instabilityMSS, microsatellite stable

Identifiers

PMID25496513
PMCPMC4622530
OpenAlexW1520483866

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.