Evidence map›Paper›PMID 29374860›Full record

ArticlePathology oncology research : POR2019

Blood Collection and Cell-Free DNA Isolation Methods Influence the Sensitivity of Liquid Biopsy Analysis for Colorectal Cancer Detection.

Barbara Kinga Barták, Alexandra Kalmár, Orsolya Galamb, Barnabás Wichmann, Zsófia Brigitta Nagy, Zsolt Tulassay, Magdolna Dank, Péter Igaz, Béla Molnár

Abstract read
PubMed Publisher
In one paragraph

Article in Pathology oncology research : POR, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
1.8field-weighted citation impact, top 16% 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

30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Novel Liquid Biopsy in Gastrointestinal Cancers.Journal of gastroenterology and hepatology · 2026
    Review
  5. Article
  6. Article
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  8. Review
  9. Article
  10. Circulating tumour DNA in colorectal cancer management.The British journal of surgery · 2023
    Article
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  12. Article
  13. Article
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  15. Article
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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

9 authors at 2 institutions in 1 country.

Barbara Kinga Barták2nd Department of Internal Medicine, Semmelweis University, Szentkirályi str. 46, Budapest, H-1088, Hungary. bartak.barbara.kinga@gmail.com.ORCID http://orcid.org/0000-0002-1285-6768
Alexandra Kalmár2nd Department of Internal Medicine, Semmelweis University, Szentkirályi str. 46, Budapest, H-1088, Hungary.
Orsolya GalambMolecular Medicine Research Group, Hungarian Academy of Sciences, Budapest, H-1088, Hungary.
Barnabás WichmannMolecular Medicine Research Group, Hungarian Academy of Sciences, Budapest, H-1088, Hungary.
Zsófia Brigitta Nagy2nd Department of Internal Medicine, Semmelweis University, Szentkirályi str. 46, Budapest, H-1088, Hungary.
Zsolt Tulassay2nd Department of Internal Medicine, Semmelweis University, Szentkirályi str. 46, Budapest, H-1088, Hungary.
Magdolna DankDepartment of Clinical Oncology, Semmelweis University, Budapest, H-1083, Hungary.
Péter Igaz2nd Department of Internal Medicine, Semmelweis University, Szentkirályi str. 46, Budapest, H-1088, Hungary.
Béla MolnárMolecular Medicine Research Group, Hungarian Academy of Sciences, Budapest, H-1088, Hungary.
Semmelweis University · HUHungarian Academy of Sciences · HU

Funding

Hungarian Scientific Research Fund OTKA-K111743National Research, Development and Innovation Office KMR-12-1-2012-0216
6 · The paper itself

Abstract

During colorectal cancer (CRC) development tumor-derived cell-free DNA (cfDNA) can be released into the bloodstream. Many different cfDNA isolation methods and specific blood collection tubes preventing the release of genomic DNA and stabilizing cfDNA with preservative reagents became available. These factors may affect greatly on the further liquid biopsy analyses. Our aim was to test different blood collection tubes and cfDNA isolation methods to determine whether these factors influence the cfDNA amount and the promoter methylation of four previously described hypermethylated biomarkers. Three manual isolation methods (High Pure Viral Nucleic Acid Large Volume Kit; Epi proColon 2.0 Kit; Quick-cfDNA™ Serum & Plasma Kit) and automated sample preparation systems (InviGenius and InviGenius PLUS) were examined. Furthermore, K3EDTA Vacuette tubes and Streck Cell-Free DNA BCT® tubes were compared. After cfDNA isolation and bisulfite conversion of samples, the methylation level of SFRP1, SFRP2, SDC2, and PRIMA1 were defined with MethyLight assays. We have ascertained that there are differences between the cfDNA amounts depending on the isolation methods. Higher cfDNA yield was observed using InviGenius system than column-based manual isolation method; however, InviGenius PLUS has produced lower cfDNA amounts. No remarkable variance could be found between K3EDTA and Streck tubes; slightly higher cfDNA quantity was detected in 60% of plasma samples using Streck tubes. In point of methylation level and frequency, manual column-based isolation produced more consistent results. Automated cfDNA extraction systems are easy-to-use and high-throughput; however, further improvements in the isolation protocols might lead to the increase of the sensitivity of further methylation analysis.

Indexed as

Biomarkers, TumorCirculating Tumor DNAColorectal NeoplasmsDNA MethylationDNA, NeoplasmHumansLiquid BiopsyMembrane ProteinsPromoter Regions, GeneticSensitivity and SpecificitySpecimen HandlingSyndecan-2Biomarkers, TumorCirculating Tumor DNADNA, NeoplasmMembrane ProteinsSyndecan-2Blood collectioncfDNA isolationColorectal cancerDNA methylationLiquid biopsyPlasma

Identifiers

PMID29374860
OpenAlexW2787693916

What OpenQuestion holds

Textmetadata
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.