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E B, F F, G P, Y R, C B. Myositis-specific autoantibodies in clinical practice: improving the performance of the immunodot. Semin Arthritis Rheum 2022; 55:151998. [DOI: 10.1016/j.semarthrit.2022.151998] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/14/2022] [Accepted: 03/20/2022] [Indexed: 01/08/2023]
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2
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He J, Wei X, Sturgess A. Concordance between myositis autoantibodies and anti-nuclear antibody patterns in a real-world, Australian cohort. Rheumatology (Oxford) 2022; 61:3792-3798. [PMID: 35048956 DOI: 10.1093/rheumatology/keac039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/14/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Myositis autoantibodies (MAs) were traditionally used as diagnostic biomarker for idiopathic inflammatory myopathy (IIM). Its clinical utility had recently expanded to include interstitial lung disease (ILD) diagnosis. Depending on the patient cohort, MAs false positives can be common. Correlation between anti-nuclear antibody (ANA) indirect immunofluorescent (IIF) pattern and MAs may improve its positive predictive value (PPV). The aim of our study was to determine the PPV of MAs in IIM and ILD in a real-world patient cohort. We also assessed whether concordance between MAs and ANA IIF pattern can improve the PPV of positive MA results. METHODS Patients with positive MAs and corresponding ANA IIF pattern were identified from Sutherland Centre of Immunology, New South Wales Health Pathology, Australia. The corresponding health records were reviewed to identify each patient's primary diagnosis. Chi-square test was used to compare the PPV between MA-ANA concordant and discordant groups. RESULTS Between January 2016 and July 2019, 118 patients were positive for at least one MA (mean age 66.7 years, 55% female). The most frequently detected autoantibodies were Ro52, anti-synthetase antibodies, and PM-Scl. The PPV of MAs for IIM or ILD was 47.4%. The overall concordance rate of MAs and ANA IIF pattern was 70.2%. Patients with concordant MA-ANA results were more likely to have true clinical disease (64.1% vs 17.8%, p< 0.001). CONCLUSION Myositis autoantibodies have a low PPV for IIM and ILD in a real-world patient cohort. A positive concordance with ANA IIF pattern can improve MA test accuracy.
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Affiliation(s)
- Jianna He
- Department of Rheumatology, St George Hospital, Sydney, Australia.,St George Clinical School, School of Medicine, University of New South Wales, Sydney, Australia
| | - Xiumei Wei
- Sutherland Centre of Immunology, Sutherland Hospital, New South Wales Health Pathology, Sydney, Australia
| | - Allan Sturgess
- Department of Rheumatology, St George Hospital, Sydney, Australia.,St George Clinical School, School of Medicine, University of New South Wales, Sydney, Australia
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3
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González-Bello Y, Garcia-Valladares I, Reyes-Pérez IV, García-Cerda D, Medrano-Ramírez G, Navarro-Zarza JE, Andrade-Ortega L, Maradiaga-Ceceña M, Cardenas-Anaya A, Nava-Zavala AH, Orozco-Barocio G, Vázquez-Del Mercado M, Rojo-Mejia A, Loyo E, Gottschalk P, Iglesias-Gamarra A, Vega K, Rojas C, Mantilla R, Gómez G, García-Kutzbach A, Fritzler MJ, García-De La Torre I. Myositis-Specific Antibodies and Myositis-Associated Antibodies in Patients With Idiopathic Inflammatory Myopathies From the PANLAR Myositis Study Group. J Clin Rheumatol 2021; 27:e302-e306. [PMID: 32084069 DOI: 10.1097/rhu.0000000000001350] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Dermatomyositis (DM) and polymyositis (PM) are forms of idiopathic inflammatory myopathies (IIMs), which are associated with the production of autoantibodies that are useful in the diagnosis and prognosis of the disease. OBJECTIVE The aim of this study was to determine the frequency of antinuclear autoantibodies (ANAs), myositis-specific autoantibodies (MSAs), and myositis-associated autoantibodies (MAAs) in 6 Latin American countries. METHODS Two hundred ten patients with IIM were included in this cross-sectional study from 2014 to 2017: 112 from Mexico, 46 from Colombia, 20 from Peru, 16 from the Dominican Republic, 10 from Argentina, and 6 from Guatemala. Antinuclear autoantibodies were detected by indirect immunofluorescence on HEp-2 cells. MSAs and MAAs were tested by a line immunoassay method. Mann-Whitney U and χ2 tests were used for statistical analysis. RESULTS Of the 210 IIM patients, 139 (66.2%) had DM, 59 (28%) PM, and 12 (5.7%) juvenile DM. The mean age was 43.5 (6-79 years); 158 (75.2%) were female, and 52 (24.8%) were male. The overall frequency of ANA was 60%. The most frequent patterns were fine speckled (AC-4) (78.3%) and cytoplasmic (AC-19) (6.45%). The most frequent MSA were anti-Mi-2 (38.5%) and anti-Jo-1 (11.9%). Anti-Mi-2 was more frequent in patients from Colombia (40.1%). The MAA more frequent were anti-Ro-52/TRIM21 (17.6%) and anti-PM-Scl75 (7.5%). CONCLUSIONS This is the first study of ANA, MSA, and MAA in patients from 6 countries from the Panamerican League against Rheumatism myositis study group. We observed a general prevalence of 60% of ANA. In relation to MSA and MAA, anti-Mi-2 was the more frequent (38.5%).
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Esthela Loyo
- Hospital Regional Universitario, Santiago, República Dominicana
| | | | | | | | | | | | - Graciela Gómez
- Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Buenos Aires, Argentina
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Krummenacher M, Lee FJ, Wienholt L, Hissaria P. Lack of standardisation in interpretation and reporting of autoantibody assays: a survey analysis of Australasian laboratories with focus on line immunoassays. Pathology 2021; 53:883-888. [PMID: 33994175 DOI: 10.1016/j.pathol.2021.01.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 12/23/2020] [Accepted: 01/24/2021] [Indexed: 11/17/2022]
Abstract
Autoantibody assays are reported in a variety of formats. Results only slightly above established cut-offs provide lower likelihood ratios; therefore, their clinical significance may be more uncertain, which is not readily communicated with dichotomous qualitative reporting. Line immunoassays (LIA) are a common method for detecting antibodies to extractable nuclear antigens (ENA) and myositis-associated antibodies. However, recommended positive cut-offs are contentious. We distributed a survey via e-mail to participants in the Royal College of Pathologists of Australasia Quality Assurance Program (RCPAQAP) Immunology modules and to a dedicated immunology mailing list in Australasia. Questions explored general viewpoints surrounding autoantibody reporting, as well as current laboratory practices, with particular focus on interpretation and reporting of the most commonly used ENA LIA manufactured by Euroimmun. There were 31 responders, representative of at least 17 unique laboratories across Australia (8 public, 5 private) and New Zealand (4 laboratories). Responses suggest that autoantibody reporting is not standardised; there was variation in general viewpoints and reporting practices, particularly regarding the interpretation of and positive cut-offs used for the Euroimmun ENA LIA, which were contrary to the manufacturer's guidelines in a majority of the responses. Interpretative qualitative reporting based on results from other investigations and the clinical history was a common theme. There is large variation in the reporting of autoantibody assays within Australasia, especially by LIA. A majority of respondents report the most commonly used ENA LIA contrary to manufacturer's guidelines; alternative positive cut-offs are commonly utilised. LIA reports should indicate the level of positivity to enhance their relevance in the clinical decision-making process.
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Affiliation(s)
- Matthew Krummenacher
- SA Pathology, Adelaide, SA, Australia; Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Frederick J Lee
- Department of Clinical Immunology and Allergy, Royal Prince Alfred Hospital, Sydney, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Louise Wienholt
- The Royal College of Pathologists Australasia Quality Assurance Programs (RCPAQAP), St Leonards, NSW, Australia
| | - Pravin Hissaria
- SA Pathology, Adelaide, SA, Australia; Royal Adelaide Hospital, Adelaide, SA, Australia.
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5
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Aguilar-Vazquez A, Chavarria-Avila E, Pizano-Martinez O, Ramos-Hernandez A, Andrade-Ortega L, Rubio-Arellano ED, Vazquez-Del Mercado M. Geographical Latitude Remains as an Important Factor for the Prevalence of Some Myositis Autoantibodies: A Systematic Review. Front Immunol 2021; 12:672008. [PMID: 33968081 PMCID: PMC8100663 DOI: 10.3389/fimmu.2021.672008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
The idiopathic inflammatory myopathies (IIM) are characterized by muscular weakness, cutaneous manifestations, muscle damage revealed by increase of muscular enzymes, muscle biopsy, electromyography and changes on magnetic resonance imaging. However, the hallmark of these IIM, is the development of myositis specific antibodies (MSA) or myositis associated antibodies (MAA). The theories about their presence in the serum of IIM is not known. Some studies have suggested that some of these MSA, such as anti-Mi-2 increases according to the intensity of UV radiation. There is scarce information about the environmental factors that might contribute in order to be considered as triggering factors as UV radiation might be. In this review, we analyzed the reported prevalence of MSAs and MAAs regarding to their geographical location and the possible relation with UV radiation. We collected the prevalence data of fifteen MSA and thirteen MAA from 22 countries around the world and we were able to observe a difference in prevalence between countries and continents. We found differences in anti-PL7, anti-Ro52, anti-La and anti-Ku prevalence according to UV radiation level. Otherwise, we observed that anti-Mi-2 prevalence increases near to the Equator meanwhile anti-MJ/NXP2 and anti-ARS prevalence had an opposite behavior increasing their prevalence in the geographical locations farther to the Equator. Our results highlighted the importance to include the UV radiation and other environmental factors in IIM studies, in order to clarify its association with MSA and MAA prevalence as well as its possible role in the immunopathogenesis of these diseases.
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Affiliation(s)
- Andrea Aguilar-Vazquez
- Centro Universitario de Ciencias de la Salud, Doctorado en Ciencias Biomédicas, Universidad de Guadalajara, Guadalajara, Mexico.,Centro Universitario de Ciencias de la Salud, Instituto de Investigación en Reumatología y del Sistema Músculo-Esquelético (IIRSME), Universidad de Guadalajara, Guadalajara, Mexico
| | - Efrain Chavarria-Avila
- Centro Universitario de Ciencias de la Salud, Instituto de Investigación en Reumatología y del Sistema Músculo-Esquelético (IIRSME), Universidad de Guadalajara, Guadalajara, Mexico.,Centro Universitario de Ciencias de la Salud, Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales, Universidad de Guadalajara, Guadalajara, Mexico.,Hospital Civil Dr. Juan I. Menchaca, División de Medicina Interna, Servicio de Reumatología 004086, PNPC CONACyT, Guadalajara, Mexico
| | - Oscar Pizano-Martinez
- Centro Universitario de Ciencias de la Salud, Instituto de Investigación en Reumatología y del Sistema Músculo-Esquelético (IIRSME), Universidad de Guadalajara, Guadalajara, Mexico.,Hospital Civil Dr. Juan I. Menchaca, División de Medicina Interna, Servicio de Reumatología 004086, PNPC CONACyT, Guadalajara, Mexico.,Centro Universitario de Ciencias de la Salud, UDG-CA 703 Inmunología y Reumatología, Universidad de Guadalajara, Guadalajara, Mexico
| | - Alejandra Ramos-Hernandez
- Hospital Civil Dr. Juan I. Menchaca, División de Medicina Interna, Servicio de Reumatología 004086, PNPC CONACyT, Guadalajara, Mexico
| | - Lilia Andrade-Ortega
- Departamento de Reumatología Centro Médico Nacional 20 de Noviembre, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Ciudad de México, Mexico
| | - Edy-David Rubio-Arellano
- Centro Universitario de Ciencias de la Salud, Departamento de Fisiología, Universidad de Guadalajara, Guadalajara, Mexico
| | - Monica Vazquez-Del Mercado
- Centro Universitario de Ciencias de la Salud, Instituto de Investigación en Reumatología y del Sistema Músculo-Esquelético (IIRSME), Universidad de Guadalajara, Guadalajara, Mexico.,Hospital Civil Dr. Juan I. Menchaca, División de Medicina Interna, Servicio de Reumatología 004086, PNPC CONACyT, Guadalajara, Mexico.,Centro Universitario de Ciencias de la Salud, UDG-CA 703 Inmunología y Reumatología, Universidad de Guadalajara, Guadalajara, Mexico.,Centro Universitario de Ciencias de la Salud, Departamento de Biología Molecular y Genómica, Universidad de Guadalajara, Guadalajara, Mexico
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6
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Lackner A, Tiefenthaler V, Mirzayeva J, Posch F, Rossmann C, Kastrati K, Radner H, Demel U, Gretler J, Stotz M, Graninger WB, Stradner MH. The use and diagnostic value of testing myositis-specific and myositis-associated autoantibodies by line immuno-assay: a retrospective study. Ther Adv Musculoskelet Dis 2020; 12:1759720X20975907. [PMID: 33343724 PMCID: PMC7727081 DOI: 10.1177/1759720x20975907] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/03/2020] [Indexed: 11/21/2022] Open
Abstract
AIMS Line immune-assays (LIA) for the detection of myositis-specific antibodies (MSA) are used widely for characterization of idiopathic inflammatory myopathies (IIM). Their current use and significance for the diagnosis of IIM remains unclear. METHODS In this retrospective analysis, we retrieved clinical diagnoses of patients tested for MSA and myositis-associated antibodies (MAA) Jo-1, Mi-2α, Mi-2β, TIF1γ, SRP, MDA-5, NXP-2, SAE, PL-7, PL-12, EJ, OJ, PM-Scl100, PM-Scl75 and Ku. We calculated clinical specificity, clinical sensitivity, negative- and positive predictive values (PPV) as well as positive and negative likelihood ratios. RESULTS In total, we analyzed 3167 samples. After exclusion of repeated measurements and patients with insufficient clinical information, data of 1118 patients were available for analysis. A total of 242 patients tested positive for at least one antibody, of which 45 patients had a diagnosis of IIM; 25 IIM patients were negative for all MSA/MAA. Clinical specificity of MSA/MAA for the diagnosis of IIM ranged between 94.2% and 99.9%. Clinical sensitivity and PPV across all antibodies tested ranged from 0.0% to 12.9% and 0.0% to 72.7%, respectively. CONCLUSION In clinical practice MSA/MAA are used widely for diagnostic work-up of IIM, resulting in a low pre-test probability. Clinicians should be aware that PPVs for most MSA/MAA are low.
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Affiliation(s)
- Angelika Lackner
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Viktoria Tiefenthaler
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Jalia Mirzayeva
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Florian Posch
- Division of Clinical Oncology, Department of Internal Medicine, Medical University Graz, Graz, Steiermark, Austria
| | - Christopher Rossmann
- Division of Clinical Oncology, Department of Internal Medicine, Medical University Graz, Graz, Steiermark, Austria
| | - Kastriot Kastrati
- Division of Rheumatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Helga Radner
- Division of Rheumatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Ulrike Demel
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Judith Gretler
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Michael Stotz
- Division of Clinical Oncology, Department of Internal Medicine, Medical University Graz, Graz, Steiermark, Austria
| | - Winfried B Graninger
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Martin H Stradner
- Department of Rheumatology & Immunology, Medical University of Graz, Auenbruggerplatz 15, Graz, Steiermark 8036, Austria
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7
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Platteel ACM, Wevers BA, Lim J, Bakker JA, Bontkes HJ, Curvers J, Damoiseaux J, Heron M, de Kort G, Limper M, van Lochem EG, Mulder AHL, Saris CGJ, van der Valk H, van der Kooi AJ, van Leeuwen EMM, Veltkamp M, Schreurs MWJ, Meek B, Hamann D. Frequencies and clinical associations of myositis-related antibodies in The Netherlands: A one-year survey of all Dutch patients. J Transl Autoimmun 2019; 2:100013. [PMID: 32743501 PMCID: PMC7388388 DOI: 10.1016/j.jtauto.2019.100013] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 12/27/2022] Open
Abstract
Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of connective tissue diseases, collectively known as myositis. Diagnosis of IIM is challenging while timely recognition of an IIM is of utter importance considering treatment options and otherwise irreversible (severe) long-term clinical complications. With the EULAR/ACR classification criteria (2017) considerable advancement has been made in the diagnostic workup of IIM. While these criteria take into account clinical parameters as well as presence of one autoantibody, anti-Jo-1, several autoantibodies are associated with IIM and are currently evaluated to be incorporated into classification criteria. As individual antibodies occur at low frequency, the development of line blots allowing multiplex antibody analysis has improved laboratory diagnostics for IIM. The Euroline myositis line-blot assay (Euroimmun) allows screening and semi-quantitative measurement for 15 autoantibodies, i.e. myositis specific antibodies (MSA) to SRP, EJ, OJ, Mi-2α, Mi-2β, TIF1-γ, MDA5, NXP2, SAE1, PL-12, PL-7, Jo-1 and myositis associated antibodies (MAA) to Ku, PM/Scl-75 and PM/Scl-100. To evaluate the clinical significance of detection and levels of these autoantibodies in the Netherlands, a retrospective analysis of all Dutch requests for extended myositis screening within a 1 year period was performed. A total of 187 IIM patients and 632 non-IIM patients were included. We conclude that frequencies of MSA and MAA observed in IIM patients in a routine diagnostic setting are comparable to cohort-based studies. Weak positive antibody levels show less diagnostic accuracy compared to positive antibody levels, except for anti-NXP2. Known associations between antibodies and skin involvement (anti-MDA5, anti-TIF1-γ), lung involvement (anti-Jo-1), and malignancy (anti-TIF1-γ) were confirmed in our IIM study population. The availability of multiplex antibody analyses will facilitate inclusion of additional autoantibodies in clinical myositis guidelines and help to accelerate diagnosing IMM with rare but specific antibodies.
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Affiliation(s)
- Anouk C M Platteel
- St. Antonius Hospital, Department of Medical Microbiology and Immunology, Nieuwegein, the Netherlands
| | - Brigitte A Wevers
- Sanquin Diagnostic Services, Amsterdam, the Netherlands.,Atalmedial, Medical Diagnostic Center, Amsterdam, the Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam, the Netherlands
| | - Johan Lim
- Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam, the Netherlands
| | - Jaap A Bakker
- Leiden University Medical Center, Department of Clinical Chemistry and Laboratory Medicine, Leiden, the Netherlands
| | - Hetty J Bontkes
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Clinical Chemistry, Amsterdam, the Netherlands
| | - Joyce Curvers
- Catharina Hospital Eindhoven, Clinical Laboratory, Eindhoven, the Netherlands
| | - Jan Damoiseaux
- Maastricht University Medical Center, Central Diagnostic Laboratory, Maastricht, the Netherlands
| | - Michiel Heron
- Elisabeth-TweeSteden Hospital, Department of Medical Microbiology and Immunology, Tilburg, the Netherlands
| | | | - Maarten Limper
- University Medical Center Utrecht, Department of Rheumatology and Clinical Immunology, Utrecht, the Netherlands
| | - Ellen G van Lochem
- Rijnstate Hospital, Department of Microbiology and Immunology, Arnhem, the Netherlands
| | | | - Christiaan G J Saris
- Radboud University Medical Center, Donders Institute for Brain Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | - Hester van der Valk
- University Medical Center Groningen, Department of Rheumatology and Clinical Immunology, Groningen, the Netherlands
| | - Anneke J van der Kooi
- Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam, the Netherlands
| | - Ester M M van Leeuwen
- Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam, the Netherlands
| | - Marcel Veltkamp
- St Antonius Hospital, Interstitial Lung Diseases Center of Excellence, Department of Pulmonology, Nieuwegein, the Netherlands.,Division of Heart&Lungs, University Medical Center, Utrecht, the Netherlands
| | - Marco W J Schreurs
- Erasmus MC University Medical Centre Rotterdam, Department of Immunology, Rotterdam, the Netherlands
| | - Bob Meek
- St. Antonius Hospital, Department of Medical Microbiology and Immunology, Nieuwegein, the Netherlands
| | - Dörte Hamann
- Sanquin Diagnostic Services, Amsterdam, the Netherlands
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8
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Gandiga PC, Zhang J, Sangani S, Thomas P, Werth VP, George MD. Utilization patterns and performance of commercial myositis autoantibody panels in routine clinical practice. Br J Dermatol 2019; 181:1090-1092. [PMID: 31102270 DOI: 10.1111/bjd.18133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- P C Gandiga
- Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, U.S.A.,Division of Rheumatology, Emory University, Atlanta, GA, U.S.A
| | - J Zhang
- Department of Internal Medicine, University of Pennsylvania, Philadelphia, PA, U.S.A
| | - S Sangani
- Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, U.S.A
| | - P Thomas
- Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, U.S.A
| | - V P Werth
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, U.S.A.,Department of Dermatology, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, U.S.A
| | - M D George
- Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, U.S.A
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9
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Damoiseaux J, Vulsteke JB, Tseng CW, Platteel AC, Piette Y, Shovman O, Bonroy C, Hamann D, De Langhe E, Musset L, Chen YH, Shoenfeld Y, Allenbach Y, Bossuyt X. Autoantibodies in idiopathic inflammatory myopathies: Clinical associations and laboratory evaluation by mono- and multispecific immunoassays. Autoimmun Rev 2019; 18:293-305. [DOI: 10.1016/j.autrev.2018.10.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 12/13/2022]
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10
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Jobanputra P, Malick F, Derrett-Smith E, Plant T, Richter A. What does it mean if a patient is positive for anti-Jo-1 in routine hospital practice? A retrospective nested case-control study. F1000Res 2018; 7:698. [PMID: 30079243 PMCID: PMC6058461 DOI: 10.12688/f1000research.14834.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/21/2018] [Indexed: 11/20/2022] Open
Abstract
Background: It is widely believed that patients bearing auto-antibodies to histidyl tRNA synthetase (anti-Jo-1) very likely have a connective tissue disease including myositis and interstitial lung disease. The value of positive tests in low disease prevalence settings such as those tested in routine care is unknown. We sought to determine the value of anti-Jo-1 auto-antibodies in routine practice. Methods: Our study was a nested case control study within a retrospective cohort of all patients tested for anti-ENA our hospital, from any hospital department, between January 2013 and December 2014. Data was extracted from electronic records of anti-Jo-1 positive patients and randomly selected ENA negative patients (ratio of 1:2), allowing for a minimum follow up of at least 12 months after first testing. Results: 4009 samples (3581 patients) were tested. Anti-ENA was positive in 616 (17.2%) patients, 40 (1.1%) were anti-Jo-1 positive. Repeat ENA testing was done for 350/3581 (9.8%) patients (428 of 4009 (10.7%) samples) and in 7/40 (17.5%) of anti-Jo-1 positive patients. The median interval between the first and second request was 124 days (inter-quartile range 233 days). The frequencies of interstitial lung disease (ILD), myositis and Raynaud's were comparable for anti-Jo-1 positive patients (n=40) and 80 randomly selected ENA negative controls. Positive tests led to additional diagnostic testing in the absence of clinical disease. Sensitivity of Jo-1 for ILD was 50% (CI 19-81%), specificity 68% (CI 59-77%), positive predictive value 12.5% (CI 4 to 27%) and negative predictive value 93.8% (CI 86-98%). Of 10 (25%) patients with high anti-Jo1 levels, 3 had ILD, one myositis and two a malignancy (disseminated melanoma and CML). Conclusion: Anti-Jo-1 is uncommon in a heterogenous hospital population and is only weakly predictive for ILD. Repeated test requests were common and potentially unnecessary indicating that controls over repeat requests could yield significant cost savings.
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Affiliation(s)
- Paresh Jobanputra
- Department of Rheumatology, Queen Elizabeth Hospital, Birmingham, Birmingham, B15 2TH, UK
| | - Feryal Malick
- Department of Rheumatology, Queen Elizabeth Hospital, Birmingham, Birmingham, B15 2TH, UK
- Department of Rheumatology, Epsom and St Helier University Hospitals NHS Trust, Carshalton, Surrey, SM15 1AA, UK
| | - Emma Derrett-Smith
- Department of Rheumatology, Queen Elizabeth Hospital, Birmingham, Birmingham, B15 2TH, UK
| | - Tim Plant
- Department of Clinical Immunology, School of Medicine, University of Birmingham, Birmingham, B15 2TT, UK
| | - Alex Richter
- Department of Clinical Immunology, School of Medicine, University of Birmingham, Birmingham, B15 2TT, UK
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11
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Lecouffe-Desprets M, Hémont C, Néel A, Toquet C, Masseau A, Hamidou M, Josien R, Martin JC. Clinical contribution of myositis-related antibodies detected by immunoblot to idiopathic inflammatory myositis: A one-year retrospective study. Autoimmunity 2018; 51:89-95. [DOI: 10.1080/08916934.2018.1441830] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Caroline Hémont
- Centre de Recherche en Transplantation et Immunologie (CRTI), UMR 1064, Inserm, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
- Laboratoire d’immunologie, CHU de Nantes, Nantes, France
| | - Antoine Néel
- Service de Médecine Interne, CHU de Nantes, Nantes, France
- Centre de Recherche en Transplantation et Immunologie (CRTI), UMR 1064, Inserm, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
| | - Claire Toquet
- Service d’anatomie et cytologie pathologiques, CHU de Nantes, Nantes, France
| | - Agathe Masseau
- Service de Médecine Interne, CHU de Nantes, Nantes, France
| | - Mohamed Hamidou
- Service de Médecine Interne, CHU de Nantes, Nantes, France
- Centre de Recherche en Transplantation et Immunologie (CRTI), UMR 1064, Inserm, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
- Faculté de Médecine, Université de Nantes, Nantes, France
| | - Regis Josien
- Centre de Recherche en Transplantation et Immunologie (CRTI), UMR 1064, Inserm, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
- Laboratoire d’immunologie, CHU de Nantes, Nantes, France
- Faculté de Médecine, Université de Nantes, Nantes, France
| | - Jérôme C. Martin
- Centre de Recherche en Transplantation et Immunologie (CRTI), UMR 1064, Inserm, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
- Laboratoire d’immunologie, CHU de Nantes, Nantes, France
- Faculté de Médecine, Université de Nantes, Nantes, France
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Chen J, Chi S, Li F, Yang J, Cho WC, Liu X. Biologics-induced interstitial lung diseases in rheumatic patients: facts and controversies. Expert Opin Biol Ther 2017; 17:265-283. [PMID: 28117616 DOI: 10.1080/14712598.2017.1287169] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Interstitial lung disease (ILD) is a common, devastating pulmonary complication. An increased number of reports suggesting that biological disease modifying antirheumatic drugs (DMARDs) induced or exacerbated ILDs in rheumatoid arthritis (RA) patients has garnered increased attention. Areas covered: This article discusses ILDs induced by or exacerbated during biological therapy in RA patients. The article summarizes the efficacy and safety of a variety of licensed and off-label biologics clinically used for rheumatic diseases, focusing on the onset or exacerbation of RA-associated ILDs (RA-ILDs) in RA patients treated with biologics targeting tumor necrosis factor, CD20, interleukin 1 (IL-1) and IL-6 receptors. Additionally, the pathogenesis of RA-ILDs is discussed. Expert opinion: To some extent, the possibility of biologic-induced RA-ILDs increases the difficulty in choosing an optimal regimen for RA treatment with biological agents, as the relationship between biological therapy safety and the induction or exacerbation of RA-ILDs has not been established. A framework to assess baseline disease severity, particularly standardizing the evaluation of the pulmonary condition stage in RA patients and monitoring the outcome during the biological therapy treatment, is highly needed and may substantially help guide treatment decisions and predict the treatment benefits.
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Affiliation(s)
- Juan Chen
- a Department of Pulmonary and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Shuhong Chi
- b Department of Rheumatology , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Feng Li
- c Center of Laboratory Medicine , General Hospital of Ningxia Medical University , Yinchuan , Ningxia , China
| | - Jiali Yang
- c Center of Laboratory Medicine , General Hospital of Ningxia Medical University , Yinchuan , Ningxia , China.,d Human Stem Cell Institute , General Hospital of Ningxia Medical University , Yinchuan , Ningxia , China
| | - William C Cho
- e Department of Clinical Oncology , Queen Elizabeth Hospital , Kowloon , Hong Kong
| | - Xiaoming Liu
- c Center of Laboratory Medicine , General Hospital of Ningxia Medical University , Yinchuan , Ningxia , China.,d Human Stem Cell Institute , General Hospital of Ningxia Medical University , Yinchuan , Ningxia , China
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