Evidence map›Paper›PMID 28569212›Full record

ArticleArthritis research & therapy2017

The prevalence of ACPA is lower in rheumatoid arthritis patients with an older age of onset but the composition of the ACPA response appears identical.

Debbie M Boeters, Lukas Mangnus, Sofia Ajeganova, Elisabet Lindqvist, Björn Svensson, René E M Toes, Leendert A Trouw, Tom W J Huizinga, Francis Berenbaum, Jacques Morel and 2 more

Open access · goldAbstract read
In one paragraph

Article in Arthritis research & therapy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.3field-weighted citation impact, top 8% 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

16 citing papers in PubMed, 36 citations in OpenAlex.

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  4. Clinical and Sonographic Pattern of Late-Onset and Early-Onset Rheumatoid Arthritis: Comparative Study.Clinical medicine insights. Arthritis and musculoskeletal disorders · 2026
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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

12 authors at 5 institutions in 3 countries.

Debbie M BoetersDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands. D.M.Boeters@lumc.nl.
Lukas MangnusDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Sofia AjeganovaDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Elisabet LindqvistDepartment of Clinical Sciences, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden.
Björn SvenssonDepartment of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden.
René E M ToesDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Leendert A TrouwDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Tom W J HuizingaDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Francis BerenbaumDepartment of Rheumatology, Sorbonne University, INSERM UMR_S938, DHU i2B, Assistance Publique-Hôpitaux de Paris, Saint-Antoine Hospital, Paris, France.
Jacques MorelDepartment of Rheumatology, Teaching Hospital Lapeyronie and Montpellier University, Montpellier, France.
Solbritt Rantapää-DahlqvistDepartment of Public Health and Clinical Medicine/Rheumatology, University Hospital, Umeå, Sweden.
Annette H M van der Helm-van MilDepartment of Rheumatology C1-R, Leiden University Medical Center, PO Box 9600, Leiden, 2300RC, The Netherlands.
Leiden University Medical Center · NLLund University · SEInserm · FRUmeå University · SEUniversité de Montpellier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRheumatoid arthritis (RA) consists of two syndromes, one autoantibody-positive and one autoantibody-negative. Existing data on the relation between age of onset and prevalence of autoantibodies were conflicting. Therefore this multicohort study assessed the age of onset in relation to the presence of autoantibodies. The association with characteristics of the anti-citrullinated protein antibodies (ACPA) response was also explored.

methodsThe 1987 criteria-positive RA patients included in the Leiden EAC, BARFOT, ESPOIR, Umeå and Lund cohorts (n = 3321) were studied at presentation for age of onset and the presence of ACPA, rheumatoid factor (RF) and anti-carbamylated protein (anti-CarP) antibodies. Logistic regression analyses were performed; effect sizes were summarized in inverse-weighted meta-analyses. Within ACPA-positive RA, ACPA level was studied in all cohorts; ACPA isotypes, ACPA fine specificity and ACPA avidity index and clinical characteristics were studied in the Leiden EAC.

resultsFrom the age of 50 onward, the proportion of ACPA-negative RA patients increased with age in the five cohorts. Similar observations were made for RF and anti-CarP. The composition of the ACPA response did not change with increasing age of onset with respect to titer, isotype distribution, fine specificity and avidity index. With increasing age of onset, RA patients smoked less often, had higher acute phase reactants and more often had a sub(acute) symptom onset.

conclusionsData of five cohorts revealed that with older age of onset ACPA-negative RA is more frequent than ACPA-positive RA, while characteristics of ACPA-positive RA as judged by the composition of the ACPA response appeared not age dependent. Further biologic studies are needed to characterize the pathogenesis of ACPA-negative polyarthritis at older age and to promote personalized treatment decisions in ACPA-negative patients in daily practice.

Indexed as

Age of OnsetAdultAgedAnti-Citrullinated Protein AntibodiesArthritis, RheumatoidFemaleHumansMaleMiddle AgedRheumatoid FactorYoung AdultAnti-Citrullinated Protein AntibodiesRheumatoid FactorACPA characteristicsAgeAutoantibodiesRheumatoid arthritis

Identifiers

PMID28569212
PMCPMC5452396
OpenAlexW2618524543

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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.