Evidence map›Paper›PMID 29530101›Full record

ArticleJournal of experimental & clinical cancer research : CR2018

Monitoring the effect of first line treatment in RAS/RAF mutated metastatic colorectal cancer by serial analysis of tumor specific DNA in plasma.

C B Thomsen, T F Hansen, R F Andersen, J Lindebjerg, L H Jensen, A Jakobsen

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
1.9field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
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  3. Circulating Cell-Free DNA and Colorectal Cancer: A Systematic Review.International journal of molecular sciences · 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

6 authors at 2 institutions in 1 country.

C B ThomsenDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark. Caroline.Emilie.Brenner.Thomsen@rsyd.dk.ORCID http://orcid.org/0000-0003-4481-6274
T F HansenDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark.
R F AndersenDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark.
J LindebjergDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark.
L H JensenDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark.
A JakobsenDanish Colorectal Cancer Center South, Vejle Hospital, Beriderbakken 4, DK-7100, Vejle, Denmark.
University of Southern Denmark · DKVejle Sygehus · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrecision medicine calls for an early indicator of treatment efficiency. Circulating tumor DNA (ctDNA) is a promising marker in this setting. Our prospective study explored the association between disease development and change of ctDNA during first line chemotherapy in patients with RAS/RAF mutated metastatic colorectal cancer (mCRC).

methodsThe study included 138 patients with mCRC receiving standard first line treatment. In patients with RAS/RAF mutated tumor DNA the same mutation was quantified in the plasma using droplet digital PCR. The fractional abundance of ctDNA was assessed in plasma before treatment start and at every treatment cycle until radiologically defined progressive disease.

resultsRAS/RAF mutations were detected in the plasma from 77 patients. Twenty patients progressed on treatment and 57 stopped treatment without progression. The presence of mutated DNA in plasma was correlated with poor overall survival. A low level of ctDNA after the first cycle of chemotherapy was associated with a low risk of progression. On the other hand, a significant increase of ctDNA at any time during the treatment course was associated with a high risk of progression on continuous treatment. The first increase in ctDNA level occurred at a median of 51 days before radiologically confirmed progression.

conclusionsThe results indicate that the ctDNA level holds potential as a clinically valuable marker in first line treatment of mCRC. A rapid decrease was associated with a prolonged progression free interval, whereas a significant increase gave notice of early progression with a relevant lead time.

Indexed as

Biomarkers, TumorCirculating Tumor DNADNA, NeoplasmGenes, rasMutationAdultAgedAntineoplastic Combined Chemotherapy ProtocolsColorectal NeoplasmsFemaleHumansLiquid BiopsyMaleMiddle AgedPrognosisraf KinasesBiomarkers, TumorCirculating Tumor DNADNA, Neoplasmraf KinasesCirculating tumor DNALiquid biopsyMetastatic colorectal cancerMonitoringRAS/RAF mutationsTreatment efficiency

Identifiers

PMID29530101
PMCPMC5848434
OpenAlexW2763267956

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.