Evidence map›Paper›PMID 28046008›Full record

ArticlePloS one2017

Cell-Free DNA Provides a Good Representation of the Tumor Genome Despite Its Biased Fragmentation Patterns.

Xiangyuan Ma, Liangjun Zhu, Xue Wu, Hua Bao, Xiaonan Wang, Zhili Chang, Yang W Shao, Zhenxin Wang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

20 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Properties and Application of Cell-Free DNA as a Clinical Biomarker.International journal of molecular sciences · 2021
    Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Life and death of circulating cell-free DNA.Cancer biology & therapy · 2019
    Review
  16. Article
  17. Circulating cell-free nucleic acids: characteristics and applications.European journal of human genetics : EJHG · 2018
    Review
  18. Circulating tumor DNA (ctDNA) in the era of personalized cancer therapy.Journal of diabetes and metabolic disorders · 2018
    Review
  19. Article
  20. Review
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

8 authors at 2 institutions in 1 country.

Xiangyuan MaGeneseeq Technology Inc., Suite 300, MaRS Centre, South Tower, Toronto, Ontario, Canada.ORCID http://orcid.org/0000-0001-7970-0867
Liangjun ZhuJiangsu Cancer Hospital, 42 Baiziting, Xuanwu, Nanjing, Jiangsu, China.
Xue WuGeneseeq Technology Inc., Suite 300, MaRS Centre, South Tower, Toronto, Ontario, Canada.
Hua BaoGeneseeq Technology Inc., Suite 300, MaRS Centre, South Tower, Toronto, Ontario, Canada.
Xiaonan WangNanjing Shihe Jiyin Biotechnology Inc., 17th Floor, Building B, Sino-Danish Life Science Park, 3 Xinjinhu Road, Nanjing, Jiangsu, China.
Zhili ChangNanjing Shihe Jiyin Biotechnology Inc., 17th Floor, Building B, Sino-Danish Life Science Park, 3 Xinjinhu Road, Nanjing, Jiangsu, China.
Yang W ShaoGeneseeq Technology Inc., Suite 300, MaRS Centre, South Tower, Toronto, Ontario, Canada.ORCID http://orcid.org/0000-0003-4585-1792
Zhenxin WangDepartment of Medical Oncology, The First Affiliated Hospital of Soochow University, Cang Lang Qu, Suzhou, Jiangsu, China.
Jiangsu Cancer Hospital · CNSoochow University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cell-free DNA (cfDNA) is short, extracellular, fragmented double-stranded DNA found in plasma. Plasma of patients with solid tumor has been found to show significantly increased quantities of cfDNA. Although currently poorly understood, the mechanism of cfDNA generation is speculated to be a product of genomic DNA fragmentation during cellular apoptosis and necrosis. Sequencing of cfDNA with tumor origin has identified tumor biomarkers, elucidating molecular pathology and assisting in accurate diagnosis. In this study, we performed whole-genome sequencing ofcfDNA samples with matching tumor and whole blood samples from five patients diagnosed with stage IV gastric or lung cancer. We analyzed the coverage spectrum of the human genome in our cfDNA samples. cfDNA exhibited no large regions with significant under-coverage, although we observed unbalanced coverage depth in cfDNA at transcription start sites and exon boundaries as a consequence of biased fragmentation due to ordered nucleosome positioning. We also analyzed the copy number variant status based on the whole-genome sequencing results and found high similarity between copy number profile constructed from tumor samples and cfDNA samples. Overall, we conclude that cfDNA comprises a good representation of the tumor genome in late stage gastric and lung cancer.

Indexed as

DNA FragmentationGenome, HumanBase PairingCell-Free SystemCluster AnalysisDNA Copy Number VariationsDNA, NeoplasmFemaleHumansMaleNucleosomesNucleotidesPrincipal Component AnalysisSequence Analysis, DNADNA, NeoplasmNucleosomesNucleotides

Identifiers

PMID28046008
PMCPMC5207727
OpenAlexW2568144095

What OpenQuestion holds

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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.