Evidence map›Paper›PMID 26443608›Full record

ArticleAnnals of the rheumatic diseases2016

Anticarbamylated protein antibodies are associated with long-term disability and increased disease activity in patients with early inflammatory arthritis: results from the Norfolk Arthritis Register.

Jennifer H Humphreys, Marije K Verheul, Anne Barton, Alexander J MacGregor, Mark Lunt, Rene Em Toes, Deborah Pm Symmons, Leendert A Trouw, Suzanne Mm Verstappen

Open access · hybridAbstract read
In one paragraph

Article in Annals of the rheumatic diseases, 2016. 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
6.4field-weighted citation impact, top 3% 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, 57 citations in OpenAlex.

  1. Pooled it
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  6. Article
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  8. [Application value of anti-carbamylated protein antibody in the diagnosis of rheumatoid arthritis].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2024
    Article
  9. Article
  10. Neutrophils in Inflammatory Bone Diseases.Current osteoporosis reports · 2024
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  19. Adding value to real-world data: the role of biomarkers.Rheumatology (Oxford, England) · 2020
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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 5 institutions in 2 countries.

Jennifer H HumphreysArthritis Research UK Centre for Epidemiology, University of Manchester, Manchester, UK.
Marije K VerheulDepartment of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
Anne BartonDepartment of Rheumatology, Norfolk and Norwich University Hospital, Norwich, UK NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK.
Alexander J MacGregorArthritis Research UK Centre for Genetics and Genomics, University of Manchester, Manchester, UK.
Mark LuntArthritis Research UK Centre for Epidemiology, University of Manchester, Manchester, UK.
Rene Em ToesDepartment of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
Deborah Pm SymmonsArthritis Research UK Centre for Epidemiology, University of Manchester, Manchester, UK NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK.
Leendert A TrouwDepartment of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
Suzanne Mm VerstappenArthritis Research UK Centre for Epidemiology, University of Manchester, Manchester, UK.
Leiden University Medical Center · NLUniversity of Manchester · GBManchester Academic Health Science Centre · GBNorfolk and Norwich University Hospital · GBVersus Arthritis · GB

Funding

Arthritis Research UK 19743Arthritis Research UK 20380Arthritis Research UK 20385Versus Arthritis 21229
6 · The paper itself

Abstract

objectivesAnticarbamylated protein (anti-CarP) antibodies are a novel family of autoantibodies recently identified in patients with inflammatory arthritis. The aim of this study was to investigate their association with long-term outcomes of disability and disease activity over 20 years' follow-up in a cohort of patients with inflammatory polyarthritis (IP).

methodsNorfolk Arthritis Register recruited adults with recent-onset swelling of ≥2 joints for ≥4 weeks from 1990 to 2009. At baseline, Health Assessment Questionnaire (HAQ) and 28 joint disease activity scores (DAS28) were obtained, and C reactive protein, rheumatoid factor (RF), anticitrullinated protein antibodies (ACPA) and anti-CarP antibodies were measured. Further HAQ scores and DAS28 were obtained at regular intervals over 20 years. Generalised estimating equations were used to test the association between anti-CarP antibody status and longitudinal HAQ and DAS28 scores; adjusting for age, gender, smoking status, year of inclusion and ACPA status. Analyses were repeated in subgroups stratified by ACPA status. The relative association of RF, ACPA and anti-CarP antibodies with HAQ and DAS28 scores was investigated using a random effects model.

results1995 patients were included; 1310 (66%) were female. Anti-CarP antibodies were significantly associated with more disability and higher disease activity, HAQ multivariate β-coefficient (95% CI) 0.12 (0.02 to 0.21), and these associations remained significant in the ACPA-negative subgroups. The associations of RF, ACPA and anti-CarP antibodies were found to be additive in the random effects model.

conclusionsAnti-CarP antibodies are associated with increased disability and higher disease activity in patients with IP. Our results suggest that measurement of anti-CarP antibodies may be useful in identifying ACPA-negative patients with worse long-term outcomes. Further, anti-CarP antibody status provided additional information about RF and ACPA.

Indexed as

AdultAgedArthritis, RheumatoidAutoantibodiesBiomarkersCarbamatesDisability EvaluationFemaleFollow-Up StudiesHumansMaleMiddle AgedPeptides, CyclicPrognosisRegistriesRheumatoid FactorAutoantibodiesBiomarkersCarbamatescyclic citrullinated peptidePeptides, CyclicRheumatoid FactorAutoantibodiesDisease ActivityEarly Rheumatoid ArthritisEpidemiologyRheumatoid Arthritis

Identifiers

PMID26443608
PMCPMC4893092
OpenAlexW2174760408

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.