Evidence map›Paper›PMID 9421490›Full record

ArticleThe Journal of clinical investigation1998

Citrulline is an essential constituent of antigenic determinants recognized by rheumatoid arthritis-specific autoantibodies.

G A Schellekens, B A de Jong, F H van den Hoogen, L B van de Putte, W J van Venrooij

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 498 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
498citing papers in PubMed, 1 pooled it
18.3field-weighted citation impact, top 1% 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

498 citing papers in PubMed, 1 synthesis or guideline pooled it, 1,434 citations in OpenAlex.

  1. Pooled it
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  11. Cross-presentation of citrullinated antigens drives cytotoxic CD8bioRxiv : the preprint server for biology · 2026
    Article
  12. Article
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  14. Primary biliary cirrhosis and rheumatoid arthritis: a comprehensive study combining genetics and transcriptomics.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Article
  15. Article
  16. Exploring Disordered Regions of Human Spliceosome Proteins.The journal of physical chemistry letters · 2026
    Article
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  18. Review
  19. Review
  20. Article

438 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

G A SchellekensDepartment of Biochemistry, University of Nijmegen, 6500 HB Nijmegen, The Netherlands. g.schellekens@bioch.kun.nl
B A de Jong
F H van den Hoogen
L B van de Putte
W J van Venrooij
Radboud University Nijmegen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Only a few autoantibodies that are more or less specific for RA have been described so far. The rheumatoid factor most often tested for is not very specific for RA, while the more specific antiperinuclear factor for several reasons is not routinely used as a serological parameter. Here we show that autoantibodies reactive with synthetic peptides containing the unusual amino acid citrulline, a posttranslationally modified arginine residue, are specifically present in the sera of RA patients. Using several citrulline-containing peptide variants in ELISA, antibodies could be detected in 76% of RA sera with a specificity of 96%. Sera showed a remarkable variety in the reactivity pattern towards different citrulline-containing peptides. Affinity-purified antibodies were shown to be positive in the immunofluorescence-based antiperinuclear factor test, and in the so-called antikeratin antibody test, and were reactive towards filaggrin extracted from human epidermis. The specific nature of these antibodies and the presence of these antibodies early in disease, even before other disease manifestations occur, are indicative for a possible role of citrulline-containing epitopes in the pathogenesis of RA.

Indexed as

Amino Acid SequenceAntibodies, AntinuclearArthritis, RheumatoidAutoantibodiesAutoantigensCitrullineFilaggrin ProteinsHumansIntermediate Filament ProteinsKeratinsMolecular Sequence DataPeptidesAntibodies, Antinuclearantiperinuclear factorAutoantibodiesAutoantigensCitrullineFilaggrin ProteinsFLG protein, humanIntermediate Filament ProteinsKeratinsPeptides

Identifiers

PMID9421490
PMCPMC508564
OpenAlexW2109578241

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.