Evidence map›Paper›PMID 21103049›Full record

ArticlePloS one2010

DNA sequence profiles of the colorectal cancer critical gene set KRAS-BRAF-PIK3CA-PTEN-TP53 related to age at disease onset.

Marianne Berg, Stine A Danielsen, Terje Ahlquist, Marianne A Merok, Trude H Ågesen, Morten H Vatn, Tom Mala, Ole H Sjo, Arne Bakka, Ingvild Moberg and 7 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 4 pooled it
3.9field-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

74 citing papers in PubMed, 4 syntheses or guidelines pooled it, 124 citations in OpenAlex.

  1. Pooled it
  2. Molecular Biomarkers for the Evaluation of Colorectal Cancer.American journal of clinical pathology · 2017
    Guideline
  3. Guideline
  4. Pooled it
  5. Trial
  6. Review
  7. Article
  8. Article
  9. Review
  10. Clinical Medicine Insights. Oncology · 2024
    Review
  11. Review
  12. Cancers · 2023
    Review
  13. Article
  14. Molecular genetics of early-onset colorectal cancer.World journal of biological chemistry · 2023
    Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Age-dependent prognostic value ofFuture oncology (London, England) · 2021
    Article

14 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

17 authors at 6 institutions in 1 country.

Marianne BergDepartment of Cancer Prevention, Institute for Cancer Research, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway.
Stine A Danielsen
Terje Ahlquist
Marianne A Merok
Trude H Ågesen
Morten H Vatn
Tom Mala
Ole H Sjo
Arne Bakka
Ingvild Moberg
Torunn Fetveit
Øystein Mathisen
Anders Husby
Oddvar Sandvik
Arild Nesbakken
Espen Thiis-Evensen
Ragnhild A Lothe
Oslo University Hospital · NOUniversity of Oslo · NOAkershus University Hospital · NODiakonhjemmet Hospital · NOSørlandet Hospital Arendal · NOSørlandet Sykehus · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The incidence of colorectal cancer (CRC) increases with age and early onset indicates an increased likelihood for genetic predisposition for this disease. The somatic genetics of tumor development in relation to patient age remains mostly unknown. We have examined the mutation status of five known cancer critical genes in relation to age at diagnosis, and compared the genomic complexity of tumors from young patients without known CRC syndromes with those from elderly patients. Among 181 CRC patients, stratified by microsatellite instability status, DNA sequence changes were identified in KRAS (32%), BRAF (16%), PIK3CA (4%), PTEN (14%) and TP53 (51%). In patients younger than 50 years (n = 45), PIK3CA mutations were not observed and TP53 mutations were more frequent than in the older age groups. The total gene mutation index was lowest in tumors from the youngest patients. In contrast, the genome complexity, assessed as copy number aberrations, was highest in tumors from the youngest patients. A comparable number of tumors from young (<50 years) and old patients (>70 years) was quadruple negative for the four predictive gene markers (KRAS-BRAF-PIK3CA-PTEN); however, 16% of young versus only 1% of the old patients had tumor mutations in PTEN/PIK3CA exclusively. This implies that mutation testing for prediction of EGFR treatment response may be restricted to KRAS and BRAF in elderly (>70 years) patients. Distinct genetic differences found in tumors from young and elderly patients, whom are comparable for known clinical and pathological variables, indicate that young patients have a different genetic risk profile for CRC development than older patients.

Indexed as

AgedAge FactorsAge of OnsetClass I Phosphatidylinositol 3-KinasesColorectal NeoplasmsDNA Mutational AnalysisFemaleGenetic Predisposition to DiseaseHumansKaplan-Meier EstimateMaleMicrosatellite InstabilityMiddle AgedMutationNeoplasm StagingPhosphatidylinositol 3-KinasesBRAF protein, humanClass I Phosphatidylinositol 3-KinasesPhosphatidylinositol 3-KinasesPIK3CA protein, humanProto-Oncogene Proteins B-rafPTEN PhosphohydrolasePTEN protein, humanras ProteinsTumor Suppressor Protein p53

Identifiers

PMID21103049
PMCPMC2980471
OpenAlexW2009477613

What OpenQuestion holds

Textmetadata
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.