Evidence map›Paper›PMID 30086420›Full record

ArticleTranslational oncology2018

Measuring KRAS Mutations in Circulating Tumor DNA by Droplet Digital PCR and Next-Generation Sequencing.

Christina Demuth, Karen-Lise Garm Spindler, Julia S Johansen, Niels Pallisgaard, Dorte Nielsen, Estrid Hogdall, Benny Vittrup, Boe Sandahl Sorensen

Open access · goldAbstract read
In one paragraph

Article in Translational oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 5 pooled it
3.8field-weighted citation impact, top 5% 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

40 citing papers in PubMed, 5 syntheses or guidelines pooled it, 76 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Circulating Cell-Free DNA and Colorectal Cancer: A Systematic Review.International journal of molecular sciences · 2018
    Pooled it
  6. High-Sensitivity ctDNA Analysis Uncovers Relevant Signals Missed by NGS in Pancreatic Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
    Article
  7. Article
  8. Review
  9. Observational
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  12. Review
  13. Review
  14. Role of Circulating Tumor DNA in Colorectal Cancer.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
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  17. Article
  18. Article
  19. Review
  20. 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

8 authors at 3 institutions in 1 country.

Christina DemuthDepartment of Clinical Biochemistry, Aarhus University Hospital, Denmark.
Karen-Lise Garm SpindlerDepartment of Oncology, Aarhus University Hospital, Denmark.
Julia S JohansenDepartment of Oncology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.
Niels PallisgaardDepartment of Surgical Pathology, Zealand University Hospital, Roskilde, Denmark.
Dorte NielsenDepartment of Oncology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.
Estrid HogdallDepartment of Pathology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.
Benny VittrupDepartment of Oncology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.
Boe Sandahl SorensenDepartment of Clinical Biochemistry, Aarhus University Hospital, Denmark. Electronic address: boesoere@rm.dk.
Gentofte Hospital · DKAarhus University Hospital · DKZealand University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Measuring total cell-free DNA (cfDNA) or cancer-specific mutations herein has presented as new tools in aiding the treatment of cancer patients. Studies show that total cfDNA bears prognostic value in metastatic colorectal cancer (mCRC) and that measuring cancer-specific mutations could supplement biopsies. However, limited information is available on the performance of different methods. Blood samples from 28 patients with mCRC and known KRAS mutation status were included. cfDNA was extracted and quantified with droplet digital polymerase chain reaction (ddPCR) measuring Beta-2 Microglobulin. KRAS mutation detection was performed using ddPCR (Bio-Rad) and next-generation sequencing (NGS, Ion Torrent PGM). Comparing KRAS mutation status in plasma and tissue revealed concordance rates of 79% and 89% for NGS and ddPCR. Strong correlation between the methods was observed. Most KRAS mutations were also detectable in 10-fold diluted samples using the ddPCR. We find that for detection of KRAS mutations in ctDNA ddPCR was superior to NGS both in analysis success rate and concordance to tissue. We further present results indicating that lower amount of plasma may be used for detection of KRAS mutations in mCRC.

Identifiers

PMID30086420
PMCPMC6085225
OpenAlexW2887643400

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.