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Four Anti-dsDNA Ant...
Four Anti-dsDNA Antibody Assays in Relation to Systemic Lupus Erythematosus Disease Specificity and Activity
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- Enocsson, Helena (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten
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- Sjöwall, Christoffer (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Reumatologiska kliniken i Östergötland
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- Wirestam, Lina (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten
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- Dahle, Charlotte (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Klinisk immunologi och transfusionsmedicin
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- Kastbom, Alf (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Reumatologiska kliniken i Östergötland
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- Rönnelid, Johan (author)
- Uppsala universitet,Klinisk immunologi,Uppsala University, Sweden
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- Wetterö, Jonas (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten
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- Skogh, Thomas (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Reumatologiska kliniken i Östergötland
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(creator_code:org_t)
- 2015-02-15
- 2015
- English.
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In: Journal of Rheumatology. - : The Journal of Rheumatology. - 0315-162X .- 1499-2752. ; 42:5, s. 817-825
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Abstract
Subject headings
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- Objective. Analysis of antibodies against dsDNA is an important diagnostic tool for systemic lupus erythematosus (SLE), and changes in anti-dsDNA antibody levels are also used to assess disease activity. Herein, 4 assays were compared with regard to SLE specificity, sensitivity, and association with disease activity variables. Methods. Cross-sectional sera from 178 patients with SLE, of which 11 were followed consecutively, from a regional Swedish SLE register were analyzed for immunoglobulin G (IgG) anti-dsDNA by bead-based multiplex assay (FIDIS; Theradig), fluoroenzyme-immunoassay (EliA; Phadia/Thermo Fisher Scientific), Crithidia luciliae immunofluorescence test (CLIFT; ImmunoConcepts), and line blot (EUROLINE; Euroimmun). All patients with SLE fulfilled the 1982 American College of Rheumatology and/or the 2012 Systemic Lupus International Collaborating Clinics (SLICC-12) classification criteria. Healthy individuals (n = 100), patients with rheumatoid arthritis (n = 95), and patients with primary Sjogren syndrome (n = 54) served as controls. Results. CLIFT had the highest SLE specificity (98%) whereas EliA had the highest sensitivity (35%). When cutoff levels for FIDIS, EliA, and EUROLINE were adjusted according to SLICC-12 (i.e., double the reference limit when using ELISA), the specificity and sensitivity of FIDIS was comparable to CLIFT. FIDIS and CLIFT also showed the highest concordance (84%). FIDIS performed best regarding association with disease activity in cross-sectional and consecutive samples. Fisher's exact test revealed striking differences between methods regarding associations with certain disease phenotypes. Conclusion. CLIFT remains a good choice for diagnostic purposes, but FIDIS performs equally well when the cutoff is adjusted according to SLICC-12. Based on results from cross-sectional and consecutive analyses, FIDIS can also be recommended to monitor disease activity.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
Keyword
- SYSTEMIC LUPUS ERYTHEMATOSUS
- DOUBLE-STRANDED DNA
- IMMUNOASSAY
- AUTOANTIBODIES
- INFLAMMATION
- RHEUMATIC DISEASE
Publication and Content Type
- ref (subject category)
- art (subject category)
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