Evidence map›Paper›PMID 32471491›Full record

ArticleArthritis research & therapy2020

Neutrophil FcγRIIA availability is associated with disease activity in systemic lupus erythematosus.

Anders A Bengtsson, Helena Tyden, Christian Lood

Open access · goldAbstract read
In one paragraph

Article in Arthritis research & therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.7field-weighted citation impact, top 29% 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

5 citing papers in PubMed, 11 citations in OpenAlex.

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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

3 authors at 2 institutions in 2 countries.

Anders A BengtssonDivision of Rheumatology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
Helena TydenDivision of Rheumatology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
Christian LoodDivision of Rheumatology, Department of Medicine, University of Washington, 750 Republican Street, Room E-545, Seattle, WA, 98109, USA. Loodc@uw.edu.ORCID 0000-0002-6171-1952
Lund University · SEUniversity of Washington · US

Funding

Transform Dissemination and Implementation Science in CTSA ProgramsUL1TR002319 · NCATS · UNIVERSITY OF WASHINGTON · PI John K. Amory · 2017 to 2026
$100.0M
NCATS NIH HHS UL1 TR002319
6 · The paper itself

Abstract

backgroundImmune complexes (ICs) are detectable in a variety of inflammatory diseases, including systemic lupus erythematosus (SLE), reflecting autoantibody binding to antigens. Though ICs are the main contributors to disease pathogenesis through FcγR-mediated inflammation and organ damage, IC levels are not part of the clinical assessment of SLE. The aim of this study was to explore the clinical utility of analyzing levels of ICs in SLE patients using a novel technology, IC-FLOW.

methodsPaired serum samples, at the time point of high and low disease activity (n = 92), were analyzed using two assays: an IC ELISA from a commercial company and a novel in-house flow cytometry-based method, IC-FLOW. IC-FLOW measures FcγRIIA availability on the neutrophil cell surface by flow cytometry, whereas the commercial ELISA measures IC binding to C1q.

resultsUsing IC-FLOW, 90% of SLE patients with active disease had elevated levels of circulating ICs (p < 0.0001). Using the commercial assay, only 17% of SLE patients had elevated levels of circulating ICs. For both assays, levels of ICs reflected active disease as determined by SLEDAI (r = 0.45, p < 0.0001) and were associated with type I IFN activity (r = 0.37, p = 0.001), and complement consumption (p = 0.0002). Levels of ICs measured with IC-FLOW, but not with the commercial ELISA, were associated with active lupus nephritis (p = 0.004).

conclusionsThis novel FcγRIIA-IC assay can detect levels of circulating ICs in patients with SLE. Analyzing IC levels may facilitate monitoring of disease activity, as well as identify patients at risk of lupus nephritis, allowing for early preventive interventions.

Indexed as

Lupus Erythematosus, SystemicReceptors, IgGAntigen-Antibody ComplexHumansNeutrophilsAntigen-Antibody ComplexFc gamma receptor IIAReceptors, IgGBiomarkerImmune complexInterferonNephritisSystemic lupus erythematosus

Identifiers

PMID32471491
PMCPMC7257165
OpenAlexW3029058978

What OpenQuestion holds

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LicenceCC BY
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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.