Evidence map›Paper›PMID 36056434›Full record

ArticleJournal of hematology & oncology2022

Somatic copy number alteration and fragmentation analysis in circulating tumor DNA for cancer screening and treatment monitoring in colorectal cancer patients.

Ariane Hallermayr, Tobias Wohlfrom, Verena Steinke-Lange, Anna Benet-Pagès, Florentine Scharf, Ellen Heitzer, Ulrich Mansmann, Christopher Haberl, Maike de Wit, Holger Vogelsang and 3 more

Open access · goldAbstract read
In one paragraph

Article in Journal of hematology & oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.5field-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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

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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

13 authors at 9 institutions in 2 countries.

Ariane HallermayrMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Tobias WohlfromMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Verena Steinke-LangeMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Anna Benet-PagèsMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Florentine ScharfMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Ellen HeitzerInstitute of Human Genetics, Diagnostic and Research Center for Molecular Biomedicine (Austria), Medical University of Graz, Graz, Austria.
Ulrich MansmannInstitute for Medical Information Processing, Biometry, and Epidemiology -IBE, LMU Munich, Munich, Germany.
Christopher HaberlDepartment of Oncology and Hematology, Barmherzige Brüder, Klinikum St. Elisabeth, Straubing, Germany.
Maike de WitDepartment of Hematology, Oncology and Palliative Medicine, Vivantes Klinikum Neukoelln, Berlin, Germany.
Holger VogelsangDepartment of General, Visceral, Thoracic and Endocrine Surgery, Klinikum Garmisch-Partenkirchen, Teaching Hospital, Ludwig Maximilian University Munich, Garmisch-Partenkirchen, Germany.
Markus RentschDepartment of General, Visceral and Thorax Surgery, Klinikum Ingolstadt, Ingolstadt, Germany.
Elke Holinski-FederMGZ - Medizinisch Genetisches Zentrum, Munich, Germany.
Julia M A PicklMGZ - Medizinisch Genetisches Zentrum, Munich, Germany. julia.romic-pickl@mgz-muenchen.de.
Medical Genetics Center · DELMU Klinikum · DEAuguste-Viktoria-Klinik · DEBarmherzige Brüder Klinikum St. Elisabeth in Straubing · DEBioTechMed-Graz · ATGarmisch-Partenkirchen Medical Center · DEHelmholtz Zentrum München · DEKlinikum Ingolstadt · DELudwig-Maximilians-Universität München · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnalysis of circulating free DNA (cfDNA) is a promising tool for personalized management of colorectal cancer (CRC) patients. Untargeted cfDNA analysis using whole-genome sequencing (WGS) does not need a priori knowledge of the patient´s mutation profile.

methodsHere we established LIquid biopsy Fragmentation, Epigenetic signature and Copy Number Alteration analysis (LIFE-CNA) using WGS with ~ 6× coverage for detection of circulating tumor DNA (ctDNA) in CRC patients as a marker for CRC detection and monitoring.

resultsWe describe the analytical validity and a clinical proof-of-concept of LIFE-CNA using a total of 259 plasma samples collected from 50 patients with stage I-IV CRC and 61 healthy controls. To reliably distinguish CRC patients from healthy controls, we determined cutoffs for the detection of ctDNA based on global and regional cfDNA fragmentation patterns, transcriptionally active chromatin sites, and somatic copy number alterations. We further combined global and regional fragmentation pattern into a machine learning (ML) classifier to accurately predict ctDNA for cancer detection. By following individual patients throughout their course of disease, we show that LIFE-CNA enables the reliable prediction of response or resistance to treatment up to 3.5 months before commonly used CEA.

conclusionIn summary, we developed and validated a sensitive and cost-effective method for untargeted ctDNA detection at diagnosis as well as for treatment monitoring of all CRC patients based on genetic as well as non-genetic tumor-specific cfDNA features. Thus, once sensitivity and specificity have been externally validated, LIFE-CNA has the potential to be implemented into clinical practice. To the best of our knowledge, this is the first study to consider multiple genetic and non-genetic cfDNA features in combination with ML classifiers and to evaluate their potential in both cancer detection and treatment monitoring. Trial registration DRKS00012890.

Indexed as

Cell-Free Nucleic AcidsCirculating Tumor DNAColorectal NeoplasmsBiomarkers, TumorDNA Copy Number VariationsEarly Detection of CancerHumansMutationBiomarkers, TumorCell-Free Nucleic AcidsCirculating Tumor DNAcfDNA fragmentationChromatin signaturesColorectal cancerctDNALiquid biopsySomatic copy number alterationsWhole-genome sequencing

Identifiers

PMID36056434
PMCPMC9438339
OpenAlexW4294225452

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LicenceCC BY
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Registered trials

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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.