Evidence map›Paper›PMID 26113482›Full record

ArticleAuto- immunity highlights2015

Decreased serum cell-free DNA levels in rheumatoid arthritis.

Marina Dunaeva, Bastiaan C Buddingh', René E M Toes, Jolanda J Luime, Erik Lubberts, Ger J M Pruijn

Open access · diamondAbstract read
In one paragraph

Article in Auto- immunity highlights, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.5field-weighted citation impact, top 20% 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, 48 citations in OpenAlex.

  1. Article
  2. Cell-Free DNA-Based Theranostics for Inflammatory Disorders.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  3. Article
  4. Review
  5. Observational
  6. Article
  7. Article
  8. Review
  9. Role of Liquid Biopsies in Rheumatoid Arthritis.Methods in molecular biology (Clifton, N.J.) · 2023
    Review
  10. Article
  11. Review
  12. Article
  13. Cell-Free DNA in Rheumatoid Arthritis.International journal of molecular sciences · 2021
    Review
  14. Review
  15. Article
  16. Article
  17. Considerations and quality controls when analyzing cell-free tumor DNA.Biomolecular detection and quantification · 2019
    Article
  18. Review
  19. Liquid biopsies to guide therapeutic decisions in rheumatoid arthritis.Translational research : the journal of laboratory and clinical medicine · 2018
    Review
  20. Article
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

6 authors at 4 institutions in 1 country.

Marina Dunaeva284 Department of Biomolecular Chemistry, Institute for Molecules and Materials and Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
Bastiaan C Buddingh'
René E M Toes
Jolanda J Luime
Erik Lubberts
Ger J M Pruijn
Erasmus MC · NLRadboud University Nijmegen · NLLeiden University Medical Center · NLRadboud University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRecent studies have demonstrated that serum/plasma DNA and RNA molecules in addition to proteins can serve as biomarkers. Elevated levels of these nucleic acids have been found not only in acute, but also in chronic conditions, including autoimmune diseases. The aim of this study was to assess cell-free DNA (cfDNA) levels in sera of rheumatoid arthritis (RA) patients compared to controls.

methodscfDNA was extracted from sera of patients with early and established RA, relapsing-remitting multiple sclerosis patients (RRMS) and healthy subjects, and its concentration was determined by quantitative PCR using two amplicons, Alu115 and β-actin205, corresponding to Alu repetitive elements and the β-actin single-copy gene, respectively. Serum DNase activity was measured by a single radial enzyme diffusion method.

resultsReduced levels of cfDNA were observed in patients with established RA in comparison with healthy controls, early RA patients and RRMS patients. There were no significant differences in cfDNA concentration between healthy controls, early RA and RRMS patients. Total DNase activity appeared to be similar in the sera of all tested groups.

conclusionsOur results demonstrate that cfDNA levels are strongly reduced in the sera of established RA patients, which is not caused by changes in DNase activity. Measurement of cfDNA can distinguish established RA patients from early RA patients. Thus, cfDNA may serve as a biomarker in RA.

Identifiers

PMID26113482
PMCPMC4536238
OpenAlexW949217108

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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.