Evidence map›Paper›PMID 25890027›Full record

ArticleArthritis research & therapy2015

Anti-factor Xa antibodies in patients with antiphospholipid syndrome and their effects upon coagulation assays.

Bahar Artim-Esen, Charis Pericleous, Ian Mackie, Vera M Ripoll, David Latchman, David Isenberg, Anisur Rahman, Yiannis Ioannou, Ian Giles

Open access · goldAbstract read
In one paragraph

Article in Arthritis research & therapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

12 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
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  4. Pathophysiology of Antiphospholipid Syndrome.Thrombosis and haemostasis · 2022
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  5. Review
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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 2 institutions in 2 countries.

Bahar Artim-EsenCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. bahartimesen@gmail.com.
Charis PericleousCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. c.pericleous@ucl.ac.uk.
Ian MackieHaemostasis Research Unit, Department of Haematology, University College London, London, UK. i.mackie@ucl.ac.uk.
Vera M RipollCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. v.ripoll-nunez@ucl.ac.uk.
David LatchmanBirkbeck, University of London, Malet Street, London, WC1E 6JF, USA. master@bbk.ac.uk.
David IsenbergCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. d.isenberg@ucl.ac.uk.
Anisur RahmanCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. anisur.rahman@ucl.ac.uk.
Yiannis IoannouArthritis Research UK Centre for Adolescent Rheumatology, University College London, UCL Hospital and Great Ormond Street Hospital, London, UK. y.ioannou@ucl.ac.uk.
Ian GilesCentre for Rheumatology Research, Rayne Institute, University College London, London, UK. i.giles@ucl.ac.uk.
University College London · GBBirkbeck, University of London · GB

Funding

Arthritis Research UK 19423Arthritis Research UK 20164Versus Arthritis 19423
6 · The paper itself

Abstract

introductionThe aim of this study was to examine the prevalence and functional effects of antibodies directed against Factor (F)Xa and other serine proteases (SP) in patients with antiphospholipid syndrome (APS).

methodsSerum from patients with APS (n=59), systemic lupus erythematosus (SLE; n=106), other autoimmune rheumatic disease (ARD; n=63) and 40 healthy controls (HC) were tested for IgG activity against thrombin (Thr), FXa, FVIIa, phosphatidylserine (PS)/FXa and antithrombin (AT)-III by enzyme-linked immunosorbent assay (ELISA). Anti-FXa positive IgG were purified to measure their avidity by chaotropic ELISA and functional effects upon clotting time (FXa-ACT) and FXa enzymatic activity (±AT-III).

resultsAnti-FXa IgG were found in patients with SLE (49.1%) and APS (33.9%) (P<0.05) but not in ARD controls and HC. In contrast, anti-Thr and anti-PS/FXa IgG were identified in other ARD and anti-FVIIa IgG were low in all groups. The avidity of APS-IgG to FXa was significantly higher than SLE-IgG (P<0.05). Greatest prolongation of FXa-ACT was observed with APS-IgG and greatest inhibitory effect upon FXa enzymatic activity was found with APS-IgG followed by SLE-IgG compared to HC-IgG. ATIII inhibition of FXa was significantly reduced by APS-IgG compared with HC and SLE (P<0.05) and did not correlate with binding to AT-III.

conclusionAPS anti-FXa IgG have higher avidity to FXa and greater effects upon the enzymatic and coagulant activity of FXa compared with SLE anti-FXa IgG. Further studies of anti-FXa antibodies in APS, SLE and other non-autoimmune thrombotic disease cohorts are now required to evaluate whether targeting FXa with selective inhibitors in patients bearing anti-FXa antibodies may be an effective treatment strategy.

Indexed as

Blood CoagulationAdultAntiphospholipid SyndromeAutoantibodiesEnzyme-Linked Immunosorbent AssayFactor XaFemaleHumansMaleMiddle AgedAutoantibodiesFactor Xa

Identifiers

PMID25890027
PMCPMC4365552
OpenAlexW2119620755

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.