Evidence map›Paper›PMID 34001239›Full record

ReviewClinical epigenetics2021

Methylated circulating tumor DNA as a biomarker for colorectal cancer diagnosis, prognosis, and prediction.

Farah J Nassar, Zahraa S Msheik, Rihab R Nasr, Sally N Temraz

Open access · goldAbstract readReview
In one paragraph

Review in Clinical epigenetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
5.6field-weighted citation impact, top 2% 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

45 citing papers in PubMed, 78 citations in OpenAlex.

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  12. A scoping review of factors influencing the implementation of liquid biopsy for cancer care.Journal of experimental & clinical cancer research : CR · 2025
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  15. Interaction ofOpen life sciences · 2025
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  17. Observational
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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

4 authors at 1 institution in 1 country.

Farah J NassarDepartment of Internal Medicine, Faculty of Medicine, American University of Beirut, P.O. Box: 11-0236, Beirut, Lebanon.
Zahraa S MsheikDepartment of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, P.O. Box: 11-0236, Beirut, Lebanon.
Rihab R NasrDepartment of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, P.O. Box: 11-0236, Beirut, Lebanon. rn03@aub.edu.lb.ORCID 0000-0003-1166-4999
Sally N TemrazDepartment of Internal Medicine, Faculty of Medicine, American University of Beirut, P.O. Box: 11-0236, Beirut, Lebanon. st29@aub.edu.lb.
American University of Beirut · LB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Worldwide, colorectal cancer (CRC) is a deadly disease whose death rate ranks second among cancers though its incidence ranks third. Early CRC detection is key and is associated with improved survival outcomes. However, existing tests for CRC diagnosis have several weaknesses thus rendering them inefficient. Moreover, reliable prognostic tests that can predict the overall cancer outcome and recurrence of the disease as well as predictive markers that can assess effectiveness of therapy are still lacking. Thus, shifting to noninvasive liquid biopsy or blood-based biomarkers is vital to improving CRC diagnosis, prognosis, and prediction. Methylated circulating tumor DNA (ctDNA) has gained increased attention as a type of liquid biopsy that is tumor-derived fragmented DNA with epigenetic alterations. Methylated ctDNA are more consistently present in blood of cancer patients as compared to mutated ctDNA. Hence, methylated ctDNA serves as a potential biomarker for CRC that is worth investigating. In this review, we explore what has been reported about methylated ctDNA as a biomarker for CRC diagnosis that can distinguish between CRC patients or those having adenoma and healthy controls as validated specifically through ROC curves. We also examine methylated ctDNA as a biomarker for CRC prognosis and prediction as confirmed through robust statistical analyses. Finally, we discuss the major technical challenges that limits the use of methylated ctDNA for clinical application and suggest possible recommendations to enhance its usage.

Indexed as

DNA MethylationBiomarkers, TumorCirculating Tumor DNAColorectal NeoplasmsHumansPredictive Value of TestsPrognosisBiomarkers, TumorCirculating Tumor DNACirculating biomarkerColorectal cancerDiagnosisMethylationPrognosis and prediction

Identifiers

PMID34001239
PMCPMC8130320
OpenAlexW3163720714

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.