Evidence map›Paper›PMID 31534493›Full record

ArticleTherapeutic advances in medical oncology2019

Detection of RAS mutations in circulating tumor DNA: a new weapon in an old war against colorectal cancer. A systematic review of literature and meta-analysis.

Antonio Galvano, Simona Taverna, Giuseppe Badalamenti, Lorena Incorvaia, Marta Castiglia, Nadia Barraco, Francesco Passiglia, Fabio Fulfaro, Giordano Beretta, Giovanni Duro and 4 more

Abstract read
In one paragraph

Article in Therapeutic advances in medical oncology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Circulating tumor DNA as a predictive biomarker for colorectal cancer postsurgical recurrence: a systematic review and meta-analysis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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  15. The diagnostic accuracy ofTherapeutic advances in medical oncology · 2022
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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

14 authors.

Antonio GalvanoMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Simona TavernaMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Giuseppe BadalamentiMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Lorena IncorvaiaMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Marta CastigliaMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Nadia BarracoMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Francesco PassigliaMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Fabio FulfaroMedical Oncology, Department of Surgical, Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
Giordano BerettaMedical Oncology Unit, Humanitas Gavazzeni, Bergamo, Italy.
Giovanni DuroInstitute of Biomedicine and Molecular Immunology 'A. Monroy', National Research Council, Palermo, Italy.
Bruno VincenziMedical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy.
Pierosandro TagliaferriMedical Oncology Unit, AUO 'Materdomini and Department of Experimental and Clinical Medicine', Magna Grecia University, Catanzaro, Italy.
Viviana BazanDepartment of Experimental Biomedicine and Clinical Neurosciences, School of Medicine, University of Palermo, Palermo, Italy.
Antonio RussoMedical Oncology Director, Department of Oncology, A.O.U.P. P. Giaccone University Hospital, 2013 ESMO Designated Centers of Integrated Oncology and Palliative Care, Via del Vespro 129, Palermo, 90127, Italy.ORCID https://orcid.org/0000-0002-4370-2008

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTissue evaluation for RAS (KRAS or NRAS) gene status in metastatic colorectal cancer (mCRC) patients represent the standard of care to establish the optimal therapeutic strategy. Unfortunately, tissue biopsy is hampered by several critical limitations due to its invasiveness, difficulty to access to disease site, patient's compliance and, more recently, neoplastic tissue spatial and temporal heterogeneity.

methodsThe authors performed a systematic literature review to identify available trials with paired matched tissue and ctDNA RAS gene status evaluation. The authors searched EMBASE, MEDLINE, Cochrane, www.ClinicalTrials.gov, and abstracts from international meetings. In total, 19 trials comparing standard tissue RAS mutational status matched paired ctDNA evaluated through polymerase chain reaction (PCR), next generation sequencing (NGS) or beads, emulsions, amplification and magnetics (BEAMing) were identified.

resultsThe pooled sensitivity and specificity of ctDNA were 0.83 (95% CI: 0.80-0.85) and 0.91 (95% CI: 0.89-0.93) respectively. The pooled positive predictive value (PPV) and negative predictive value (NPV) of the ctDNA were 0.87 (95% CI: 0.81-0.92) and 0.87 (95% CI: 0.82-0.92), respectively. Positive likelihood ratio (PLR) was 8.20 (95% CI: 5.16-13.02) and the negative likelihood ratio (NLR) was 0.22 (95% CI: 0.16-0.30). The pooled diagnostic odds ratio (DOR) was 50.86 (95% CI: 26.15-98.76), and the area under the curve (AUC) of the summary receiver operational characteristics (sROC) curve was 0.94.

conclusionThe authors' meta-analysis produced a complete and updated overview of ctDNA diagnostic accuracy to test RAS mutation in mCRC. Results provide a strong rationale to include the RAS ctDNA test into randomized clinical trials to validate it prospectively.

Indexed as

circulating tumor DNAdiagnostic accuracyliquid biopsymeta-analysismetastatic colorectal cancerRAS

Identifiers

PMID31534493
PMCPMC6737868

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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.