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Miura E, Taneda T, Umeda Y, Umeda M, Oyake M, Matsushita T, Nishino I, Fujita N. [Juvenile-onset anti-nuclear matrix protein 2 (NXP-2) antibody-positive dermatomyositis with joint contractures before manifestation of myositis: a case report]. Rinsho Shinkeigaku 2024:cn-001970. [PMID: 38797685 DOI: 10.5692/clinicalneurol.cn-001970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
A 23-year-old man was admitted to our hospital with a one-year history of muscle weakness and atrophy. He had noticed contractures of the fingers of both hands from the age of 18. Examination revealed a skin rash including heliotrope rash and Gottron's sign, joint contractures in the extremities, dysphagia, extensive muscle weakness and marked muscle atrophy. The serum creatine kinase level was 272 IU/l and muscle biopsy showed typical perifascicular atrophy but little lymphocyte invasion. There was no interstitial pneumonia or malignancy, but muscle tendons showed elevated CT values suggesting calcification or fibrosis. Anti-nuclear matrix protein 2 (NXP-2) antibody-positive dermatomyositis was diagnosed on the basis of the serum antibody level. Methylprednisolone pulse therapy ameliorated the skin rash and bulbar palsy, but muscle weakness, atrophy and joint contractures were resistant to the treatment. There have been no previous reports of young adults with anti-NXP-2 antibody-positive dermatomyositis in whom joint contracture became evident as early as 4 years beforehand, which is a important feature for differential diagnosis of dermatomyositis.
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Affiliation(s)
- Eito Miura
- Department of Neurology, Nagaoka Red Cross Hospital
| | | | | | - Maiko Umeda
- Department of Neurology, Nagaoka Red Cross Hospital
| | - Mutsuo Oyake
- Department of Neurology, Nagaoka Red Cross Hospital
| | | | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP)
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Batu ED, Şener S, Haliloğlu G, Talim B, Şener B, Şahiner ÜM, Bilginer Y, Orhan D, Aydıngöz Ü, Özen S. Further expanding the phenotype of anti-Ku antibody associated disease in children and adolescents. Neuromuscul Disord 2024; 40:7-15. [PMID: 38805897 DOI: 10.1016/j.nmd.2024.05.008] [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: 12/12/2023] [Revised: 04/21/2024] [Accepted: 05/13/2024] [Indexed: 05/30/2024]
Abstract
Anti-Ku autoantibodies are associated with several autoimmune inflammatory diseases. We aimed to review our anti-Ku positive pediatric patients in this study. Four pediatric patients (all female) who had anti-Ku positivity were included (Patients 1-2-3 with idiopathic inflammatory myopathy (IIM); Patient 4 with chronic urticaria). Patient 1 (onset:10.5 years) had proximal muscle weakness, Raynaud phenomenon, sclerodactyly, hyperpigmentation, joint contracture, and tenosynovitis. The disease course was progressive despite treatment with corticosteroids, intravenous immunoglobulin (IVIG), plasma exchange, and 11 different immunosuppressive drugs. Patient 2 (onset:15 years) presented with proximal muscle weakness, fatigue, weight loss. She recovered normal muscle strength after treatment with corticosteroids, IVIG, methotrexate, cyclosporine A, mycophenolate mofetil. Patient 3 (onset:10 years) had juvenile dermatomyositis with proximal muscle weakness, Gottron's papules, and calcinosis. She also had anti-NXP2 positivity. Remission was achieved with corticosteroids, methotrexate, azathioprine, and infliximab. Muscle biopsy findings revealed a variable spectrum of necrosis, regeneration, perifascicular pattern, and inflammation. Patient 4 had only chronic urticaria (onset: 6.5 years). The striking features of this series were heterogeneity in clinical presentations including solely chronic urticaria and IIM; variable response to immunosuppressive treatments; and histopathology revealing a spectrum of necrosis, regeneration and inflammatory infiltration. Expanding the spectrum of anti-Ku positivity will allow better understanding of anti-Ku-associated phenotype clusters.
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Affiliation(s)
- Ezgi Deniz Batu
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
| | - Seher Şener
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Göknur Haliloğlu
- Department of Pediatrics, Division of Pediatric Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Beril Talim
- Department of Pediatrics, Pathology Unit, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Burçin Şener
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ümit Murat Şahiner
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Yelda Bilginer
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Diclehan Orhan
- Department of Medical Pathology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Üstün Aydıngöz
- Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Seza Özen
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Tansley SL, McMorrow F, Cotton CV, Adamali H, Barratt SL, Betteridge ZE, Perurena-Prieto J, Gibbons MA, Kular R, Loganathan A, Lamb JA, Lu H, New RP, Pratt D, Rivera-Ortega P, Sayers R, Steward M, Stranks L, Vital E, Spencer LG, McHugh NJ, Cooper RG. Identification of connective tissue disease autoantibodies and a novel autoantibody anti-annexin A11 in patients with "idiopathic" interstitial lung disease. Clin Immunol 2024; 262:110201. [PMID: 38575043 DOI: 10.1016/j.clim.2024.110201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/07/2024] [Accepted: 04/01/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Autoantibodies are a hallmark feature of Connective Tissue Diseases (CTD). Their presence in patients with idiopathic interstitial lung disease (ILD) may suggest covert CTD. We aimed to determine the prevalence of CTD autoantibodies in patients diagnosed with idiopathic ILD. METHODS 499 patient sera were analysed: 251 idiopathic pulmonary fibrosis (IPF), 206 idiopathic non-specific interstitial pneumonia (iNSIP) and 42 cryptogenic organising pneumonia (COP). Autoantibody status was determined by immunoprecipitation. RESULTS 2.4% of IPF sera had a CTD-autoantibody compared to 10.2% of iNSIP and 7.3% of COP. 45% of autoantibodies were anti-synthetases. A novel autoantibody targeting an unknown 56 kDa protein was found in seven IPF patients (2.8%) and two NSIP (1%) patients. This was characterised as anti-annexin A11. CONCLUSION Specific guidance on autoantibody testing and interpretation in patients with ILD could improve diagnostic accuracy. Further work is required to determine the clinical significance of anti-annexin A11.
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Affiliation(s)
- Sarah L Tansley
- Department of Life Sciences, University of Bath, Bath, UK; Royal National Hospital for Rheumatic Diseases, Bath, UK.
| | | | | | - Huzaifa Adamali
- Bristol Interstitial Lung Disease service, North Bristol NHS Trust, Bristol, UK
| | - Shaney L Barratt
- Bristol Interstitial Lung Disease service, North Bristol NHS Trust, Bristol, UK
| | | | | | - Michael A Gibbons
- College of Medicine & Health, University of Exeter; Royal Devon University Hospitals Foundation NHS Trust
| | - Raman Kular
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | | | - Janine A Lamb
- Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Hui Lu
- Department of Life Sciences, University of Bath, Bath, UK
| | - Robert P New
- Division of Musculoskeletal and dermatological Sciences, University of Manchester, UK
| | - Diane Pratt
- Bristol Interstitial Lung Disease service, North Bristol NHS Trust, Bristol, UK
| | | | - Ross Sayers
- College of Medicine & Health, University of Exeter
| | | | | | - Edward Vital
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Lisa G Spencer
- Liverpool Interstitial Lung Disease Service, Aintree Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Neil J McHugh
- Department of Life Sciences, University of Bath, Bath, UK
| | - Robert G Cooper
- Liverpool Interstitial Lung Disease Service, Aintree Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
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Gonçalves Júnior J, Shinjo SK. Calcinosis in Juvenile Dermatomyositis-Epidemiology, Pathogenesis, Clinical Features, and Treatment: A Systematic Review. Curr Rheumatol Rep 2024; 26:53-68. [PMID: 38060107 DOI: 10.1007/s11926-023-01126-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2023] [Indexed: 12/08/2023]
Abstract
PURPOSE OF REVIEW We performed a systematic review of the literature on the epidemiology, pathogenesis, clinical and laboratory characterization, and treatment of calcinosis in patients with juvenile dermatomyositis (JDM). A qualitative systematic review was conducted from January 1975 to April 2023 according to the PRISMA protocol using three electronic databases: PubMed, Web of Science, and Scopus. Studies were analyzed based on the following eligibility criteria: at least one combination of the terms described in the search strategy appeared in the title, written in English, Portuguese, or Spanish, and addressed the epidemiology, pathogenesis, diagnosis, and treatment of calcinosis in juvenile dermatomyositis. Systematic or scoping reviews, letters, clinical images, book chapters, abstracts, inflammatory myopathy in other connective tissue diseases, idiopathic inflammatory myopathies in adults, and purely qualitative studies were excluded. RECENT FINDINGS Seventy-five studies were included. According to the literature, calcinosis is common in women, around five years old, with three years of disease in association with osteoarticular, cutaneous, pulmonary manifestations, and fever. The pathogenesis is still unknown, but the participation of interleukin 1 and 6, tumor necrosis factor alpha, and innate immunity dysregulation seem to be involved. Common autoantibodies are anti-NXP-2, anti-MDA-5, and anti-Mi-2, and their treatment remains controversial. Prospective, randomized, controlled studies are needed to evaluate treatment protocols and map the natural history of this serious complication. Calcinosis seems to be more common in White female children with muscle weakness, fever, arthritis, severe pulmonary, and skin involvement with anti-NXP-2, anti-MDA-5, and anti-Mi-2 autoantibodies. The multitargets and aggressive treatment is recommended.
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Affiliation(s)
- Jucier Gonçalves Júnior
- Division of Rheumatology, Faculdade de Medicina FMUSP, Universidade de São Paulo, R. Dr. Ovídio Pires de Campos, 225 - Cerqueira César, São Paulo, SP, 05403-010, Brazil.
- Faculdade de Medicina, Universidade Federal Cariri, UFCA, Barbalha, CE, Brazil.
| | - Samuel Katsuyuki Shinjo
- Division of Rheumatology, Faculdade de Medicina FMUSP, Universidade de São Paulo, R. Dr. Ovídio Pires de Campos, 225 - Cerqueira César, São Paulo, SP, 05403-010, Brazil
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Walsh M, Bettendorf B, Zahn C. Dermatomyositis presenting with diffuse calcinosis. BMJ Case Rep 2023; 16:e257288. [PMID: 38103899 PMCID: PMC10728952 DOI: 10.1136/bcr-2023-257288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023] Open
Abstract
We present the case of a woman in her early 50s who initially presented to an orthopedist for nodules located near the posterior knee. Imaging revealed diffuse subcutaneous calcifications and she was subsequently referred to rheumatology. Additional testing included myositis panel, electromyography (EMG) and muscle biopsy which indicated the presence of an inflammatory myopathy. It was determined that this patient had an uncommon presentation of dermatomyositis in which her primary complaint was calcinosis cutis. While rash and muscle weakness are often the symptoms most commonly associated with dermatomyositis, it is essential to have a wide differential for patients presenting with calcium deposition in soft tissues. This is particularly important in patients with certain antibodies, including the NXP-2 antibody, which can be associated with malignancy and should prompt an appropriate malignancy workup.
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Affiliation(s)
- Madalyn Walsh
- Internal Medicine, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Brittany Bettendorf
- Division of Immunology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Carleigh Zahn
- Division of Rheumatology, University of Michigan, Ann Arbor, Michigan, USA
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Gauffenic A, Ratsimbazafy V, Ostertag A, Linglart A, Bourrat E, Leroy C, Lioté F, Latourte A, Richette P, Ea HK, Guigonis V. Effectiveness of topical sodium thiosulfate for ectopic calcifications and ossifications. Results of the CATSS-O study. Semin Arthritis Rheum 2023; 63:152306. [PMID: 37976811 DOI: 10.1016/j.semarthrit.2023.152306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/02/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
INTRODUCTION Ectopic calcifications (ECs) and heterotopic ossifications (HOs) form in non-mineralized tissues, most often in subcutaneous and muscular areas. Local and systemic complications can cause severe disability. Systemic administration of sodium thiosulfate (STS) gives promising results but is difficult to use in clinical practice. OBJECTIVE Evaluation of the efficacy and safety of topical STS in ECs and HOs. METHODS Retrospective analysis of the CATSS-O registry that included patients receiving topical STS 25 % prepared by the pharmacy of Limoges hospital during 2014-2020. The efficacy of STS was assessed by imaging (radiography or CT) after at least 6 months' treatment. RESULTS Among 126 patients who received STS 25 %, 35 had complete clinical and radiographic data for analysis (28 with ECs and 7 with HOs; 18 children [mean age 8.9 years, range 1.5-16], 17 adults [mean age 52.4 years, range 24-90]). Calcifications or ossifications were due to dermatomyositis (8 children, 6 adults), systemic scleroderma (6 adults) or pseudo-hypoparathyroidism 1A (7 children). They were single (37.1 %) or multiple (62.9 %). Treated regions were in the lower limbs (31.4 %), upper limbs (37.1 %) or both (28.6 %) and the axial region (2.9 %). Topical STS was clinically effective in 9/28 (32.1 %) patients with ECs and 2/7 (28.6 %) children with HOs. Three patients experienced complete disappearance of their calcifications. Response for ECs was better in children than adults (54.5% vs 17.6 %, p = 0.035). Topical STS was well tolerated. CONCLUSION Local STS seems effective for ossifications, particularly pediatric calcifications or ossifications. Randomized and experimental studies are needed to confirm this observation and to identify the underlying mechanisms.
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Affiliation(s)
- Alan Gauffenic
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France; Service de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, APHP.Nord, F-75010 Paris, France
| | - Voa Ratsimbazafy
- University of Limoges, EpiMaCT Epidemiology of chronic diseases in tropical zone, Institute of Epidemiology and Tropical Neurology, OmegaHealth, Limoges, France; Inserm, U1094, EpiMaCT-Epidemiology of chronic diseases in tropical zone, Limoges, France; IRD, U270, EpiMaCT-Epidemiology of chronic diseases in tropical zone, Limoges, France; CHU Limoges, Department of Pharmacy, Limoges, France
| | - Agnès Ostertag
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France
| | - Agnès Linglart
- INSERM-U1185, Paris Sud Paris-Saclay University, 75005 Paris, France; APHP, Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism, Network OSCAR and 'Platform of Expertise Paris Sud for Rare Diseases, 75005 Paris, France; APHP, Endocrinology and Diabetes for Children, 75005 Paris, France
| | - Emmanuelle Bourrat
- Department of Dermatology, Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC), Paris, France
| | - Charles Leroy
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France
| | - Frédéric Lioté
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France; Service de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, APHP.Nord, F-75010 Paris, France
| | - Augustin Latourte
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France; Service de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, APHP.Nord, F-75010 Paris, France
| | - Pascal Richette
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France; Service de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, APHP.Nord, F-75010 Paris, France
| | - Hang Korng Ea
- Inserm UMR 1132 Bioscar, Université Paris Cité, F-75010 Paris, France; Service de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, APHP.Nord, F-75010 Paris, France.
| | - Vincent Guigonis
- Service de Pédiatrie, CHU de Limoges, Limoges, France; CIC 1435, CHU de Limoges, Limoges, France; UMR CNRS 7276, Limoges, France
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Magro CM, Kalomeris T, Dillard A. Panniculitic primary cutaneous gamma delta T-cell lymphoma with concomitant features of autoimmune disease emphasizing a pathophysiologic continuum of lupus profundus with the panniculitic T cell lymphomas. Clin Dermatol 2023; 41:680-691. [PMID: 37716581 DOI: 10.1016/j.clindermatol.2023.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/18/2023]
Abstract
Certain T-cell lymphomas exhibit unique homing properties of the neoplastic lymphocytes for the subcutaneous fat. There are two primary forms of subcutaneous panniculitic lymphomas of T-cell origin. One falls under the designation of primary cutaneous gamma-delta T-cell lymphomas (PGD-TCL) whereby there is dominant involvement of the fat defininng a panniculitic form of PGD-TCL. The neoplastic cells are of the gamma-delta subset and are either double negative for CD4 and CD8 and/or can express CD8. They often have an aggressive clinical course. The other form of panniculitic T-cell lymphoma falls under the designation of subcutaneous panniculitis-like T-cell lymphoma (SPTCL). It represents a subcutaneous lymphoma derived from CD8+ T cells of the alpha-beta subset and typically has an indolent course. These two forms of panniculitic T-cell lymphoma exhibit overlapping histologic features with lupus profundus (LP), a putative form of panniculitic T-cell dyscrasia. We present three cases of PGD-TCL of the fat in the setting of lupus erythematosus (LE) (two cases) and dermatomyositis (DM) (one case), respectively. There were concurrent features of LE and DM in their lymphoma biopsies in two cases while a prior biopsy in one was interpreted as LP. In this latter case, the LP diagnosis presaged the diagnosis of panniculitic PGD-TCL by three years. One patient diagnosed with panniculitic PGD-TCL had hemophagocytic syndrome after developing a lupus-like complex including certain supportive serologies such as antibodies to double-stranded DNA following initiation of statin therapy. The second patient presented with PGD-TCL and concomitant features of anti-nuclear matrix 2 (NXP2) DM. The third patient presented in 2003 with LP and overlying skin features of acute LE, initially responding to Plaquenil, and then four years later was diagnosed with PGD-TCL heralded by Plaquenil treatment resistance. Two of the patients died of their lymphoma. All biopsies showed a characteristic histopathology of PGD-TCL. In two cases, the PGD-TCL was associated with overlying LE-cutaneous findings; another case had skin changes of lymphocyte-rich DM. In two cases, the MXA stain was strikingly positive, the surrogate type I interferon marker that is typically upregulated in biopsies of LE and DM. There are eight prior reported cases describing SPTCL with concomitant cutaneous changes of LE. In six cases there was an established history of LE, including LP responding initially to Plaquenil, similar to one of our cases. In the context of SPTCL or panniculitic PGD-TCL, panniculitic T-cell lymphomas can be associated with concomitant clinical and histologic features of LE or DM, including an upregulated type I interferon signature. Identifying histologic features associated with either of these prototypic autoimmune conditions should not be considered exclusionary to diagnosing any panniculitic T-cell lymphoma. A clinical, histomorphologic, and pathophysiologic continuum exists with LP, SPTCL and panniculitic PGD-TCL.
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Affiliation(s)
- Cynthia M Magro
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York, USA.
| | - Taylor Kalomeris
- Department of Pathology and Laboratory Medicine, New York-Presbyterian/Weill Cornell Medicine, New York, New York, USA
| | - Alicia Dillard
- Department of Pathology and Laboratory Medicine, New York-Presbyterian/Weill Cornell Medicine, New York, New York, USA
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Chang Y, Shan X, Ge Y. Macrophage activation syndrome in juvenile dermatomyositis: a case report and a comprehensive review of the literature. Pediatr Rheumatol Online J 2023; 21:106. [PMID: 37735702 PMCID: PMC10515226 DOI: 10.1186/s12969-023-00893-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Macrophage activation syndrome (MAS) is a severe and life-threatening syndrome associated with autoimmune diseases. The coexistence of MAS and juvenile dermatomyositis (JDM) is not well reported. This report describes a case of JDM with MAS and summarizes the clinical characteristics and prognosis of MAS in patients with JDM. CASE PRESENTATION The patient was a 15-year-old female with JDM, presenting with heliotrope rash, muscle weakness, increased muscle enzyme, anti-nuclear matrix protein 2 (NXP2) antibody, and muscle biopsy consistent with JDM. The patient developed fever, cytopenia, and hyperferritinemia three months after the first manifestations. Hemophagocytosis was found in the bone marrow. The final diagnosis was JDM combined with MAS. Despite intensive treatment, the patient died of MAS. By reviewing the literature, we found 17 similar cases. Together with the present case, 18 patients were identified, the median age of disease onset was 13.5 years, and male to female ratio was 1.25: 1. Nine out of 16 (56.3%) patients were complicated with interstitial lung disease (ILD). The median time interval between JDM onset and MAS diagnosis was 9 weeks. At the onset of MAS, all (100%) patients had elevated levels of ferritin and serum liver enzymes. Among 18 patients, 14 (77.8%) had fever, 14/17 (82.4%) had cytopenia, 11/11 (100%) had hepatosplenomegaly, and 13/14 (92.9%) had hemophagocytosis. Five (27.8%) patients showed central nervous system (CNS) involvement. The mortality of MAS rate of in patients with JDM was 16.7%, despite various treatment methods. CONCLUSION . The coexistence of JDM and MAS is underestimated with increased mortality. Hepatosplenomegaly and increased serum levels of ferritin in patients with JDM should raise clinical suspicion for MAS.
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Affiliation(s)
- Yong Chang
- Department of Rheumatology, Tianshui Hospital of Traditional Chinese Medicine, Tianshui, China
| | - Xueyan Shan
- Department of Rheumatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Beijing University of Chinese Medicine, Beijing, China
| | - Yongpeng Ge
- Department of Rheumatology, Key Laboratory of Myositis, China-Japan Friendship Hospital, Beijing, China.
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Yi BY, Marrs J, Acharya P, Sura A, Cidon M. Risk factors for developing calcinosis in juvenile dermatomyositis: subcutaneous and myofascial edema in initial magnetic resonance imaging. Rheumatol Int 2023:10.1007/s00296-023-05385-4. [PMID: 37432516 DOI: 10.1007/s00296-023-05385-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 06/28/2023] [Indexed: 07/12/2023]
Abstract
Calcinosis is a sequela of Juvenile Dermatomyositis (JDM) with significant morbidity. A retrospective study observing risk factors for JDM calcinosis, including a possible association between higher intensity of subcutaneous and myofascial edema in initial magnetic resonance imaging (MRI) and development of calcinosis was performed at a tertiary pediatric medical center. Data from the past 20 years on JDM patients with MRIs at the time of JDM diagnosis were obtained. MRIs were individually evaluated by two pediatric musculoskeletal radiologists who blindly graded the intensity of edema on a 0-4 Likert scale. Clinical data and edema scores were compared between patients who developed calcinosis and who did not. Forty-three patients (14 with calcinosis and 29 without calcinosis) were identified. The calcinosis group contained more racial and ethnic minorities, younger ages of JDM onset and longer time to reach JDM diagnosis. Muscle enzyme levels at JDM diagnosis were lower in the calcinosis group, especially Creatinine Kinase (CK) (p = 0.047) and Alanine Aminotransferase (ALT) (p = 0.015). The median score for edema in both groups was 3 (p = 0.39) with an inter-rater reliability of 95%. There was no association between increased subcutaneous and myofascial edema in MRIs at the time of JDM diagnosis and development of calcinosis. Earlier age of JDM onset, racial and ethnic minority, and delay in JDM diagnosis could be risks for developing calcinosis. The calcinosis group presented with lower muscle enzyme levels at the time of JDM diagnosis, especially CK and ALT with statistical significance. This could reflect delay in diagnosis and treatment.
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Affiliation(s)
- Belina Y Yi
- Division of Rheumatology, Children's Hospital Los Angeles, Los Angeles, CA, USA.
| | - Joshua Marrs
- Department of Pediatrics, Los Angeles General Medical Center, Los Angeles, CA, USA
| | - Patricia Acharya
- Department of Radiology, Keck School of Medicine, Children's Hospital of Los Angeles, University of Southern California, Los Angeles, CA, USA
| | - Amit Sura
- Department of Radiology, Keck School of Medicine, Children's Hospital of Los Angeles, University of Southern California, Los Angeles, CA, USA
| | - Michal Cidon
- Division of Rheumatology, Keck School of Medicine, Children's Hospital of Los Angeles, University of Southern California, Los Angeles, CA, USA
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Papadopoulou C, Chew C, Wilkinson MGL, McCann L, Wedderburn LR. Juvenile idiopathic inflammatory myositis: an update on pathophysiology and clinical care. Nat Rev Rheumatol 2023; 19:343-362. [PMID: 37188756 PMCID: PMC10184643 DOI: 10.1038/s41584-023-00967-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2023] [Indexed: 05/17/2023]
Abstract
The childhood-onset or juvenile idiopathic inflammatory myopathies (JIIMs) are a heterogenous group of rare and serious autoimmune diseases of children and young people that predominantly affect the muscles and skin but can also involve other organs, including the lungs, gut, joints, heart and central nervous system. Different myositis-specific autoantibodies have been identified that are associated with different muscle biopsy features, as well as with different clinical characteristics, prognoses and treatment responses. Thus, myositis-specific autoantibodies can be used to subset JIIMs into sub-phenotypes; some of these sub-phenotypes parallel disease seen in adults, whereas others are distinct from adult-onset idiopathic inflammatory myopathies. Although treatments and management have much improved over the past decade, evidence is still lacking for many of the current treatments and few validated prognostic biomarkers are available with which to predict response to treatment, comorbidities (such as calcinosis) or outcome. Emerging data on the pathogenesis of the JIIMs are leading to proposals for new trials and tools for monitoring disease.
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Affiliation(s)
- Charalampia Papadopoulou
- Department of Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust (GOSH), London, UK
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK
| | - Christine Chew
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Meredyth G Ll Wilkinson
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, London, UK
- Infection Immunity and Inflammation Research and Teaching Department, UCL GOS Institute of Child Health, London, UK
| | - Liza McCann
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
| | - Lucy R Wedderburn
- Department of Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust (GOSH), London, UK.
- Rare Diseases Theme NIHR Biomedical Research Centre at GOSH, London, UK.
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, London, UK.
- Infection Immunity and Inflammation Research and Teaching Department, UCL GOS Institute of Child Health, London, UK.
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11
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Wilkinson MGL, Moulding D, McDonnell TCR, Orford M, Wincup C, Ting JYJ, Otto GW, Restuadi R, Kelberman D, Papadopoulou C, Castellano S, Eaton S, Deakin CT, Rosser EC, Wedderburn LR. Role of CD14+ monocyte-derived oxidised mitochondrial DNA in the inflammatory interferon type 1 signature in juvenile dermatomyositis. Ann Rheum Dis 2023; 82:658-669. [PMID: 36564154 PMCID: PMC10176342 DOI: 10.1136/ard-2022-223469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 12/01/2022] [Indexed: 12/25/2022]
Abstract
OBJECTIVES To define the host mechanisms contributing to the pathological interferon (IFN) type 1 signature in Juvenile dermatomyositis (JDM). METHODS RNA-sequencing was performed on CD4+, CD8+, CD14+ and CD19+ cells sorted from pretreatment and on-treatment JDM (pretreatment n=10, on-treatment n=11) and age/sex-matched child healthy-control (CHC n=4) peripheral blood mononuclear cell (PBMC). Mitochondrial morphology and superoxide were assessed by fluorescence microscopy, cellular metabolism by 13C glucose uptake assays, and oxidised mitochondrial DNA (oxmtDNA) content by dot-blot. Healthy-control PBMC and JDM pretreatment PBMC were cultured with IFN-α, oxmtDNA, cGAS-inhibitor, TLR-9 antagonist and/or n-acetyl cysteine (NAC). IFN-stimulated gene (ISGs) expression was measured by qPCR. Total numbers of patient and controls for functional experiments, JDM n=82, total CHC n=35. RESULTS Dysregulated mitochondrial-associated gene expression correlated with increased ISG expression in JDM CD14+ monocytes. Altered mitochondrial-associated gene expression was paralleled by altered mitochondrial biology, including 'megamitochondria', cellular metabolism and a decrease in gene expression of superoxide dismutase (SOD)1. This was associated with enhanced production of oxidised mitochondrial (oxmt)DNA. OxmtDNA induced ISG expression in healthy PBMC, which was blocked by targeting oxidative stress and intracellular nucleic acid sensing pathways. Complementary experiments showed that, under in vitro experimental conditions, targeting these pathways via the antioxidant drug NAC, TLR9 antagonist and to a lesser extent cGAS-inhibitor, suppressed ISG expression in pretreatment JDM PBMC. CONCLUSIONS These results describe a novel pathway where altered mitochondrial biology in JDM CD14+ monocytes lead to oxmtDNA production and stimulates ISG expression. Targeting this pathway has therapeutical potential in JDM and other IFN type 1-driven autoimmune diseases.
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Affiliation(s)
- Meredyth G Ll Wilkinson
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, UCL, London, UK
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
| | - Dale Moulding
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
- Developmental Biology and Cancer Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Thomas C R McDonnell
- Centre for Rheumatology Research, Division of Medicine, University College London, London, UK
| | - Michael Orford
- Developmental Biology and Cancer Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Chris Wincup
- Centre for Rheumatology Research, Division of Medicine, University College London, London, UK
| | - Joanna Y J Ting
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Georg W Otto
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
- Experimental and Personalised Medicine, Genetics and Genomic Medicine, UCL Great Ormond Street Institute of Child Health, London, UK
- Genetics and Genomic Medicine Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Restuadi Restuadi
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, UCL, London, UK
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
| | - Daniel Kelberman
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
- Experimental and Personalised Medicine, Genetics and Genomic Medicine, UCL Great Ormond Street Institute of Child Health, London, UK
- Genetics and Genomic Medicine Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Charalampia Papadopoulou
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Rheumatology, Great Ormond Street Hospital NHS Trust, London, UK
| | - Sergi Castellano
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
- Genetics and Genomic Medicine Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Simon Eaton
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
- Developmental Biology and Cancer Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Claire T Deakin
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, UCL, London, UK
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
| | - Elizabeth C Rosser
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, UCL, London, UK
- Centre for Rheumatology Research, Division of Medicine, University College London, London, UK
| | - Lucy R Wedderburn
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, UCL, London, UK
- NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, UK
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12
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Milne M, Sims C, Anderson DR, Johannemann A, Leverenz D, Criscione-Schreiber L, Ardalan K. A Rare Manifestation of a Rare Disease: The Importance of Thinking Outside the Box in a Patient With Complex Dermatomyositis. Arthritis Care Res (Hoboken) 2022; 74:1943-1949. [PMID: 35507472 DOI: 10.1002/acr.24905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 03/03/2022] [Accepted: 04/28/2022] [Indexed: 02/05/2023]
Affiliation(s)
- Megan Milne
- Duke University School of Medicine, Durham, North Carolina
| | - Catherine Sims
- Duke University School of Medicine, Durham, North Carolina
| | | | | | - David Leverenz
- Duke University School of Medicine, Durham, North Carolina
| | | | - Kaveh Ardalan
- Duke University School of Medicine, Durham, North Carolina
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13
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Oldroyd AGS, Lilleker JB, Amin T, Aragon O, Bechman K, Cuthbert V, Galloway J, Gordon P, Gregory WJ, Gunawardena H, Hanna MG, Isenberg D, Jackman J, Kiely PDW, Livermore P, Machado PM, Maillard S, McHugh N, Murphy R, Pilkington C, Prabu A, Rushe P, Spinty S, Swan J, Tahir H, Tansley SL, Truepenny P, Truepenny Y, Warrier K, Yates M, Papadopoulou C, Martin N, McCann L, Chinoy H. British Society for Rheumatology guideline on management of paediatric, adolescent and adult patients with idiopathic inflammatory myopathy. Rheumatology (Oxford) 2022; 61:1760-1768. [PMID: 35355064 PMCID: PMC9398208 DOI: 10.1093/rheumatology/keac115] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 02/21/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Alexander G S Oldroyd
- NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Centre for Musculoskeletal Research, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Centre for Epidemiology Versus Arthritis, University of Manchester, Manchester, UK.,Department of Rheumatology, Salford Royal NHS Foundation Trust, Salford, UK
| | - James B Lilleker
- Centre for Musculoskeletal Research, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Manchester Centre for Clinical Neurosciences, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK
| | - Tania Amin
- Department of Paediatric Rheumatology, Leeds Children's Hospital, Leeds, UK
| | - Octavio Aragon
- Pharmacy Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK.,School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Katie Bechman
- Centre for Rheumatic Diseases, King's College London, London, UK
| | - Verna Cuthbert
- Department of Paediatric Rheumatology, Royal Manchester Children's Hospital, Manchester, UK
| | - James Galloway
- Centre for Rheumatic Diseases, King's College London, London, UK
| | - Patrick Gordon
- Department of Rheumatology, King's College Hospital NHS Foundation Trust, London, UK
| | - William J Gregory
- Department of Rheumatology, Salford Royal NHS Foundation Trust, Salford, UK.,Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - Harsha Gunawardena
- Department of Rheumatology, North Bristol NHS Trust, Bristol, UK.,Department of Clinical and Academic Rheumatology, University of Bristol, Bristol, UK
| | - Michael G Hanna
- Queen Square Centre for Neuromuscular Diseases, UCL Queen Square Institute of Neurology, University College London, London, UK
| | - David Isenberg
- Department of Rheumatology, Division of Medicine, University College London, London, UK
| | - John Jackman
- Department of Rheumatology, Nuffield Orthopaedic Centre, Oxford, UK
| | - Patrick D W Kiely
- Department of Rheumatology, St George's University Hospitals NHS Foundation Trust, London, UK.,Institute of Medical and Biomedical Education, St George's, University of London, London, UK
| | - Polly Livermore
- Department of Paediatric Rheumatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK.,NIHR Great Ormond Street and University College London Biomedical Research Centre, London, UK
| | - Pedro M Machado
- Department of Neuromuscular Diseases, Centre for Rheumatology, University College London, London, UK.,NIHR University College London Hospitals Biomedical Research Centre, University College London Hospitals (UCLH) NHS Foundation Trust, London, UK.,Department of Rheumatology, Northwick Park Hospital, London North West University Healthcare NHS Trust, London, UK
| | - Sue Maillard
- Department of Paediatric Rheumatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Neil McHugh
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Ruth Murphy
- Department of Dermatology, Sheffield University Teaching Hospitals, Sheffield, UK
| | - Clarissa Pilkington
- Department of Paediatric Rheumatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Athiveeraramapandian Prabu
- Rheumatology Research Group, Institute of Inflammation and Aging, University of Birmingham, Birmingham, UK.,Department of Rheumatology, Sandwell and West Birmingham NHS Foundation Trust, Birmingham, UK
| | | | - Stefan Spinty
- Department of Paediatric Neurology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
| | - Joanne Swan
- Juvenile Dermatomyositis Parent Representative
| | - Hasan Tahir
- Department of Rheumatology, Royal Free London NHS Trust, London, UK.,Division of Medicine, University College London, London, UK
| | - Sarah L Tansley
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK.,Royal National Hospital for Rheumatic Diseases, Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
| | | | | | - Kishore Warrier
- Department of Paediatric Rheumatology, Nottingham Children's Hospital, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Mark Yates
- Centre for Rheumatic Diseases, King's College London, London, UK
| | - Charalampia Papadopoulou
- Department of Paediatric Rheumatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Neil Martin
- Department of Paediatric Rheumatology, Royal Hospital for Children, Glasgow, UK.,Scottish Paediatric & Adolescent Rheumatology Network, Glasgow, Scotland
| | - Liza McCann
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
| | - Hector Chinoy
- NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Centre for Musculoskeletal Research, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Department of Rheumatology, Salford Royal NHS Foundation Trust, Salford, UK
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14
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Zhang L, Yang H, Yang H, Liu H, Tian X, Jiang W, Peng Q, Wang G, Lu X. Serum levels of anti-transcriptional intermediary factor 1-γ autoantibody associated with the clinical, pathological characteristics and outcomes of patients with dermatomyositis. Semin Arthritis Rheum 2022; 55:152011. [PMID: 35489170 DOI: 10.1016/j.semarthrit.2022.152011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 04/12/2022] [Accepted: 04/18/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To investigate the association of the serum levels of anti-transcriptional intermediary factor 1 (TIF1)-γ autoantibodies with the clinical and pathological characteristics, as well as the prognosis of adult patients with dermatomyositis (DM). METHODS Eighty-seven adult DM patients with anti-TIF1-γ autoantibodies positive screened by immunoblotting assay were enrolled in the study. The presence and levels of anti-TIF1-γ autoantibodies were examined through enzyme-linked immunosorbent assay (ELISA). Muscle biopsy specimens were obtained from 52 patients, and immunohistochemistry was performed to visualize major histocompatibility complex (MHC)-I, CD3, CD20 and C5b-9. Muscle biopsy scores and disease activity were evaluated. RESULTS A total of 80 patients were positive for anti-TIF1-γ autoantibodies confirmed by ELISA assay, including 30 cancer-associated myositis (CAM) and 50 non-CAM. Serum levels of anti-TIF1-γ autoantibodies did not significantly differ between the CAM and non-CAM groups. The levels of anti-TIF1-γ were associated with disease activity scores. A total of 63.9% of non-CAM patients displayed a classical DM pathological phenotype. Conversely, CAM patients presented with classical DM (25%), immune-mediated necrotizing myopathy (25%), non-specific myositis (32.3%), and normal (18%) phenotypes of muscle biopsy. Anti-TIF1-γ autoantibody levels were positively associated with muscle biopsy total scores, muscle fiber scores and inflammatory infiltration scores in the non-CAM patients but not in the CAM patients. The survival rate of CAM patients presenting with high anti-TIF1-γ autoantibody levels was lower than that of patients with low levels. However, no difference in survival rate was observed in the non-CAM group between high and low autoantibody levels. CONCLUSION The distinct associations of anti-TIF1-γ autoantibody levels with disease activity, muscle histopathology damage and outcome indicated that different pathogenesis might be involved in DM with or without cancer.
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Affiliation(s)
- Lining Zhang
- Peking University China-Japan Friendship School of Clinical Medicine, 100029 Beijing, China; Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Hanbo Yang
- Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Hongxia Yang
- Peking University China-Japan Friendship School of Clinical Medicine, 100029 Beijing, China; Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Hongyan Liu
- Department of Pathology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Xiaolan Tian
- Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Wei Jiang
- Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Qinglin Peng
- Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Guochun Wang
- Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China
| | - Xin Lu
- Peking University China-Japan Friendship School of Clinical Medicine, 100029 Beijing, China; Department of Rheumatology, China-Japan Friendship Hospital, 100029 Beijing, China.
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15
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El-Banna G, Fiorentino D. Update on Cutaneous Signs to Assist in the Diagnosis of Dermatomyositis. Curr Rheumatol Rep 2022; 24:156-165. [PMID: 35404005 DOI: 10.1007/s11926-022-01070-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE OF REVIEW Dermatomyositis (DM) is a heterogeneous idiopathic inflammatory myopathy that can be challenging to diagnose. Learning about the cutaneous manifestations in DM can assist with prompt diagnosis as well as subgroup classification. This review highlights recent data regarding cutaneous signs in DM and their associations with myositis-specific antibodies (MSAs). RECENT FINDINGS Several novel DM skin signs have recently been reported. Novel and confirmatory data have helped to define more clearly the associations between various cutaneous manifestations and MSAs. Awareness of the diverse cutaneous phenotypes can help with the timely diagnosis of DM. As some MSAs are associated with atypical skin features and/or characteristic patterns of clinical findings, knowledge of these associations can help clinicians to recognize DM patients. Understanding how the prevalence and presentation of various cutaneous signs differ among ethnically diverse patients is a high priority for further study.
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Affiliation(s)
- Ghida El-Banna
- Department of Dermatology, Stanford University School of Medicine, 450 Broadway, Pavilion C #C-234, Redwood City, CA, 94063, USA
| | - David Fiorentino
- Department of Dermatology, Stanford University School of Medicine, 450 Broadway, Pavilion C #C-234, Redwood City, CA, 94063, USA.
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16
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Halilu F, Christopher-Stine L. Myositis-specific Antibodies: Overview and Clinical Utilization. RHEUMATOLOGY AND IMMUNOLOGY RESEARCH 2022; 3:1-10. [PMID: 36467022 PMCID: PMC9524809 DOI: 10.2478/rir-2022-0001] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 01/28/2022] [Indexed: 05/25/2023]
Abstract
Purpose of review-To review autoantibodies associated with different subtypes of idiopathic inflammatory myopathy (IIM) and their clinical applications. IIM are a heterogenous group of autoimmune disorders characterized by muscle weakness, cutaneous features, and internal organ involvement. The diagnosis and classification, which is often challenging, is made using a combination of clinical features, muscle enzyme levels, imaging, and biopsy. The landmark discoveries of novel autoantibodies specific to IIM subtypes have been one of the greatest advancements in the field of myositis. The specificity of these autoantibodies has simplified the diagnostic algorithm of IIM with their heterogenous presentation and outdated the earlier diagnostic criteria. Myositis-specific antibodies (MSAs) have improved diagnostics, clinical phenotyping, and prognostic stratification of the subtypes of IIMs. Furthermore, the levels of certain MSAs correlate with disease activity and muscle enzyme levels such that titers may be able to be used to predict disease course and treatment response.
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Affiliation(s)
- Fatima Halilu
- Department of Medicine, Greater Baltimore Medical Center, Towson, MD, USA
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17
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Valenzuela A, Chung L. Subcutaneous calcinosis: Is it different between systemic sclerosis and dermatomyositis? JOURNAL OF SCLERODERMA AND RELATED DISORDERS 2022; 7:7-23. [PMID: 35386947 PMCID: PMC8922676 DOI: 10.1177/23971983211053245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/27/2021] [Indexed: 02/03/2023]
Abstract
Calcinosis cutis is the deposition of insoluble calcium in the skin and subcutaneous tissues. It is a manifestation of several autoimmune connective tissue diseases, most frequently with systemic sclerosis and juvenile dermatomyositis, followed by adult dermatomyositis. Autoimmune connective tissue disease-associated calcinosis is of the dystrophic subtype, which occurs at sites of damaged tissue in the setting of normal serum calcium and phosphate levels. In juvenile dermatomyositis, calcinosis is considered a marker of ongoing disease activity and possibly inadequate treatment, while in adult dermatomyositis, it is a hallmark of skin damage due to chronic rather than active disease. Calcinosis is associated with long disease duration in systemic sclerosis and dermatomyositis, anti-polymyositis/sclerosis autoantibodies in systemic sclerosis and NXP-2 and melanoma differentiation-associated gene 5 in dermatomyositis. Calcinosis in systemic sclerosis occurs most frequently in the hands, particularly the fingers, whereas in dermatomyositis, it affects mainly the trunk and extremities. The primary mineral component of calcinosis is hydroxyapatite in systemic sclerosis and carbonate apatite in dermatomyositis. Calcinosis in dermatomyositis and systemic sclerosis share some pathogenic mechanisms, but vascular hypoxia seems to play a more important role in systemic sclerosis, whereas the release of calcium from mitochondria in muscle cells damaged by myopathy may be a primary mechanism contributing to dermatomyositis-related calcinosis. Multiple treatment strategies for dermatomyositis and systemic sclerosis-related calcinosis have been used with variable results. Early aggressive treatment of underlying myositis in patients with dermatomyositis may improve long-term outcomes of calcinosis. A better understanding of the pathogenesis of calcinosis is needed to improve treatment options.
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Affiliation(s)
- Antonia Valenzuela
- Division of Clinical Immunology and Rheumatology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Lorinda Chung
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Palo Alto, CA, USA,Division of Immunology and Rheumatology, VA Palo Alto Health Care System, Palo Alto, CA, USA,Lorinda Chung, Division of Immunology and Rheumatology, Stanford University School of Medicine, 1000 Welch Rd Ste 203, MC 5755, Palo Alto, CA 94304, USA.
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18
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Deakin CT, Bowes J, Rider LG, Miller FW, Pachman LM, Sanner H, Rouster-Stevens K, Mamyrova G, Curiel R, Feldman BM, Huber AM, Reed AM, Schmeling H, Cook CG, Marshall LR, Wilkinson MGL, Eyre S, Raychaudhuri S, Wedderburn LR. Association with HLA-DRβ1 position 37 distinguishes juvenile Dermatomyositis from adult-onset myositis. Hum Mol Genet 2022; 31:2471-2481. [PMID: 35094092 PMCID: PMC9307311 DOI: 10.1093/hmg/ddac019] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objectives
Juvenile dermatomyositis (JDM) is a rare, severe autoimmune disease and the most common idiopathic inflammatory myopathy (IIM) of children. JDM and adult-onset dermatomyositis (DM) have similar clinical, biological and serological features, although these features differ in prevalence between childhood-onset and adult-onset disease, suggesting age of disease onset may influence pathogenesis. Therefore, a JDM-focused genetic analysis was performed using the largest collection of JDM samples to date.
Methods
Caucasian JDM samples (n = 952) obtained via international collaboration were genotyped using the Illumina HumanCoreExome chip. Additional non-assayed HLA loci and genome-wide SNPs were imputed.
Results
HLA-DRB1*03:01 was confirmed as the classical HLA allele most strongly associated with JDM (OR 1.66; 95% CI 1.46, 1.89; P = 1.4 × 10−14), with an independent association at HLA-C*02:02 (OR = 1.74; 95% CI 1.42, 2.13, P = 7.13 × 10−8). Analyses of amino acid positions within HLA-DRB1 indicated the strongest association was at position 37 (omnibus P = 3.3 × 10−19), with suggestive evidence this association was independent of position 74 (omnibus P = 5.1 × 10−5), the position most strongly associated with adult-onset DM. Conditional analyses also suggested the association at position 37 of HLA-DRB1 was independent of some alleles of the Caucasian HLA 8.1 ancestral haplotype (AH8.1) such as HLA-DQB1*02:01 (OR = 1.62; 95% CI 1.36, 1.93; P = 8.70 × 10−8), but not HLA-DRB1*03:01 (OR = 1.49; 95% CR 1.24, 1.80; P = 2.24 × 10−5). No associations outside the HLA region were identified.
Conclusions
Our findings confirm previous associations with AH8.1 and HLA-DRB1*03:01, HLA-C*02:02 and identify a novel association with amino acid position 37 within HLA-DRB1 which may distinguish JDM from adult DM.
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Affiliation(s)
- Claire T Deakin
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL, UCL Hospital and Great Ormond Street Hospital, London, UK
- NIHR Biomedical Research Centre at Great Ormond Street Hospital, London, UK
| | - John Bowes
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- National Institute of Health Research Manchester Biomedical Research Centre, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Lisa G Rider
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, USA
| | - Frederick W Miller
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, USA
| | - Lauren M Pachman
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Helga Sanner
- Department of Rheumatology, University of Oslo, Oslo, Norway
- Oslo New University College, Oslo, Norway
| | | | - Gulnara Mamyrova
- Division of Rheumatology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Rodolfo Curiel
- Division of Rheumatology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Brian M Feldman
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Adam M Huber
- IWK Health Centre and Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ann M Reed
- Pediatrics, Duke University, Durham, North Carolina, USA
| | - Heinrike Schmeling
- Alberta Children's Hospital and Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada
| | - Charlotte G Cook
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Lucy R Marshall
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL, UCL Hospital and Great Ormond Street Hospital, London, UK
- NIHR Biomedical Research Centre at Great Ormond Street Hospital, London, UK
| | - Meredyth G Ll Wilkinson
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL, UCL Hospital and Great Ormond Street Hospital, London, UK
- NIHR Biomedical Research Centre at Great Ormond Street Hospital, London, UK
| | - Stephen Eyre
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- National Institute of Health Research Manchester Biomedical Research Centre, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Soumya Raychaudhuri
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- National Institute of Health Research Manchester Biomedical Research Centre, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, UK
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Lucy R Wedderburn
- Infection, Immunity and Inflammation Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL, UCL Hospital and Great Ormond Street Hospital, London, UK
- NIHR Biomedical Research Centre at Great Ormond Street Hospital, London, UK
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19
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Turnier JL, Kahlenberg JM. Using autoantibody signatures to define cancer risk in dermatomyositis. J Clin Invest 2022; 132:e156025. [PMID: 35040442 PMCID: PMC8759773 DOI: 10.1172/jci156025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dermatomyositis is an idiopathic inflammatory myopathy with a highly heterogeneous disease course. Although there is a known increase in cancer risk surrounding the time of dermatomyositis diagnosis, the mechanisms driving this increased risk are not well understood. Further, there are no current standardized cancer screening guidelines for dermatomyositis patients. In this issue of the JCI, Fiorentino, Mecoli, et al. discovered additional autoantibodies in patients with dermatomyositis and anti-TIF1-γ autoantibodies, a known risk factor for malignancy. They observed a decreased cancer risk with an increasing number of autoantibodies. Importantly, these findings indicate that more detailed autoantibody phenotyping at diagnosis might better predict cancer risk and also suggest that diversity and kinetics of the host immune response might influence cancer development.
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Affiliation(s)
| | - J. Michelle Kahlenberg
- Department of Internal Medicine, Division of Rheumatology
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
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20
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Fredi M, Cavazzana I, Ceribelli A, Cavagna L, Barsotti S, Bartoloni E, Benucci M, De Stefano L, Doria A, Emmi G, Fabris M, Fornaro M, Furini F, Giudizi MG, Govoni M, Ghirardello A, Iaccarino L, Iannone F, Infantino M, Isailovic N, Lazzaroni MG, Manfredi M, Mathieu A, Marasco E, Migliorini P, Montecucco C, Palterer B, Parronchi P, Piga M, Pratesi F, Riccieri V, Selmi C, Tampoia M, Tripoli A, Zanframundo G, Radice A, Gerli R, Franceschini F. An Italian Multicenter Study on Anti-NXP2 Antibodies: Clinical and Serological Associations. Clin Rev Allergy Immunol 2022; 63:240-250. [PMID: 35092577 PMCID: PMC9464148 DOI: 10.1007/s12016-021-08920-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2021] [Indexed: 01/13/2023]
Abstract
The identification of anti-NXP2 antibodies is considered a serological marker of dermatomyositis (DM), with calcinosis, severe myositis and, in some reports, with cancer. Historically, these associations with anti-NXP2 antibodies have been detected by immunoprecipitation (IP), but in the last few years commercial immunoblotting assays have been released. The aim of this collaborative project was to analyse the clinical features associated to anti-NXP2 antibodies, both with commercial line blot (LB) and IP. Myositis-specific and myositis-associated autoantibodies were detected in single centres by commercial line blot (LB); available sera were evaluated in a single centre by protein and RNA immunoprecipitation (IP), and IP-Western blot. Sixty patients anti-NXP2+ (NXP2+) positive by LB were compared with 211 patients anti-NXP2 negative with idiopathic inflammatory myositis (IIM). NXP2+ showed a younger age at IIM onset (p = 0.0014), more frequent diagnosis of dermatomyositis (p = 0.026) and inclusion-body myositis (p = 0.009), and lower rate of anti-synthetase syndrome (p < 0.0001). As for clinical features, NXP2+ more frequently develop specific skin manifestations and less frequently features related with overlap myositis and anti-synthetase syndrome. IP confirmed NXP2 positivity in 31 of 52 available sera (62%). Most clinical associations were confirmed comparing NXP2 LB+/IP+ versus NXP2-negative myositis, with the following exceptions: inclusion-body myositis diagnosis was not detected, whilst dysphagia and myositis were found more frequently in NXP2 LB+/IP+ patients. The 21 LB+ /IP-myositis patients did not show differences in clinical features when compared with the NXP2-myositis patients and more frequently displayed multiple positivity at LB. Risk of developing cancer-associated myositis was similar between NXP2-positive and NXP2-negative myositis patients, either when detected by LB or IP. Protein-IP confirmed NXP2 antibodies in nearly 60% of sera positive for the same specificity with commercial assay. Double-positive cases rarely occurred in myositis patients with a clinical diagnosis other than dermatomyositis. Patients only positive by LB (LB+/IP-) did not display clinical features typical of NXP2. NXP2 positivity by LB should be confirmed by other methods in order to correctly diagnose and characterize patients affected by idiopathic inflammatory myositis.
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Affiliation(s)
- Micaela Fredi
- grid.7637.50000000417571846Rheumatology and Clinical Immunology Unit, ASST Spedali Civili and Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Ilaria Cavazzana
- grid.7637.50000000417571846Rheumatology and Clinical Immunology Unit, ASST Spedali Civili and Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Angela Ceribelli
- grid.417728.f0000 0004 1756 8807Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center - IRCCS, Rozzano (Mi), Italy ,grid.452490.eDepartment of Biomedical Sciences, Humanitas University, Rozzano (Mi), Italy
| | - Lorenzo Cavagna
- grid.419425.f0000 0004 1760 3027Division of Rheumatology, University and IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Simone Barsotti
- grid.5395.a0000 0004 1757 3729Division of Rheumatology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Elena Bartoloni
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, Department of Medicine, University of Perugia, Perugia, Italy
| | - Maurizio Benucci
- grid.511672.60000 0004 5995 4917Immunology and Allergy Laboratory Unit S. Giovanni Di Dio Hospital, Azienda USL Toscana Centro, Firenze, Italy
| | - Ludovico De Stefano
- grid.419425.f0000 0004 1760 3027Division of Rheumatology, University and IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Andrea Doria
- grid.5608.b0000 0004 1757 3470Rheumatology Unit, Department of Medicine, University of Padova, Padova, Italy
| | - Giacomo Emmi
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Firenze, Firenze, Italy
| | - Martina Fabris
- grid.411492.bInstitute of Clinical Pathology, Department of Laboratory Medicine, University Hospital of Udine, Udine, Italy
| | - Marco Fornaro
- grid.7644.10000 0001 0120 3326Unit of Rheumatology, Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | - Federica Furini
- grid.8484.00000 0004 1757 2064Department of Medical Sciences, Rheumatology Unit, University of Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona (Ferrara), Italy
| | - Maria Grazia Giudizi
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Firenze, Firenze, Italy
| | - Marcello Govoni
- grid.8484.00000 0004 1757 2064Department of Medical Sciences, Rheumatology Unit, University of Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona (Ferrara), Italy
| | - Anna Ghirardello
- grid.5608.b0000 0004 1757 3470Rheumatology Unit, Department of Medicine, University of Padova, Padova, Italy
| | - Luca Iaccarino
- grid.5608.b0000 0004 1757 3470Rheumatology Unit, Department of Medicine, University of Padova, Padova, Italy
| | - Fiorenzo Iannone
- grid.7644.10000 0001 0120 3326Unit of Rheumatology, Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | - Maria Infantino
- grid.511672.60000 0004 5995 4917Immunology and Allergy Laboratory Unit S. Giovanni Di Dio Hospital, Azienda USL Toscana Centro, Firenze, Italy
| | - Natasa Isailovic
- grid.417728.f0000 0004 1756 8807Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center - IRCCS, Rozzano (Mi), Italy
| | - Maria Grazia Lazzaroni
- grid.7637.50000000417571846Rheumatology and Clinical Immunology Unit, ASST Spedali Civili and Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Mariangela Manfredi
- grid.511672.60000 0004 5995 4917Immunology and Allergy Laboratory Unit S. Giovanni Di Dio Hospital, Azienda USL Toscana Centro, Firenze, Italy
| | - Alessandro Mathieu
- grid.7763.50000 0004 1755 3242Rheumatology Unit, Department of Medical Sciences and Public Health, University of Cagliari and AOU University Clinic, Cagliari, Italy
| | - Emiliano Marasco
- grid.419425.f0000 0004 1760 3027Division of Rheumatology, University and IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Paola Migliorini
- grid.5395.a0000 0004 1757 3729Clinical Immunology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Carlomaurizio Montecucco
- grid.419425.f0000 0004 1760 3027Division of Rheumatology, University and IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Boaz Palterer
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Firenze, Firenze, Italy
| | - Paola Parronchi
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Firenze, Firenze, Italy
| | - Matteo Piga
- grid.7763.50000 0004 1755 3242Rheumatology Unit, Department of Medical Sciences and Public Health, University of Cagliari and AOU University Clinic, Cagliari, Italy
| | - Federico Pratesi
- grid.5395.a0000 0004 1757 3729Clinical Immunology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Valeria Riccieri
- grid.7841.aDepartment of Rheumatology, Sapienza-University of Rome, Rome, Italy
| | - Carlo Selmi
- grid.417728.f0000 0004 1756 8807Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center - IRCCS, Rozzano (Mi), Italy ,grid.452490.eDepartment of Biomedical Sciences, Humanitas University, Rozzano (Mi), Italy
| | - Marilina Tampoia
- Clinical Pathology Unit, Department of Biomedical Sciences and Human Oncology, University “Aldo Moro” of Bari, Bari, Italy
| | - Alessandra Tripoli
- grid.5395.a0000 0004 1757 3729Division of Rheumatology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Giovanni Zanframundo
- grid.419425.f0000 0004 1760 3027Division of Rheumatology, University and IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Antonella Radice
- grid.416325.7Department of Microbiology and Virology, ASST Santi Paolo E Carlo, San Carlo Hospital, Milan, Italy
| | - Roberto Gerli
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, Department of Medicine, University of Perugia, Perugia, Italy
| | - Franco Franceschini
- grid.7637.50000000417571846Rheumatology and Clinical Immunology Unit, ASST Spedali Civili and Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
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21
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Sharma A, Bhattarai D, Gupta A, Guleria S, Rawat A, Vignesh P, Garg R, Singh S. Autoantibody Profile of Children with Juvenile Dermatomyositis. Indian J Pediatr 2021; 88:1170-1173. [PMID: 33694062 DOI: 10.1007/s12098-021-03680-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/24/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To study autoantibody profile in juvenile dermatomyositis (JDM) and to look for phenotypic associations of these autoantibodies, if any. METHODS Thirty-four children with JDM with a minimum follow-up duration of 24 mo were enrolled. Clinical findings and investigations at the time of diagnosis were noted from the clinic records. At inclusion, they were clinically evaluated for residual disease, disease activity and complications. All the enrolled patients were tested for antinuclear antibodies (ANA), muscle specific antibodies (MSA) and myositis associated autoantibodies (MAA). RESULTS ANA positivity was seen in 14/34 children. At least one MSA or MAA was present in 8/34 children. Anti-SRP, anti-MDA-5, and anti-Mi-2 antibodies were present in 4, 3, and 1 patient, respectively. Anti-SSA/Ro52 antibody was positive in 1 child. All four children with anti-SRP antibody were girls, who had polycyclic course. Two of them developed calcinosis. Prominent skin involvement with less severe muscle involvement and monocyclic course were seen in patients with anti-MDA-5 antibody. Two of them had arthritis/arthralgia at initial presentation. The only patient with anti-Mi-2 had normal muscle strength at enrollment. None of the patients had anti-synthetase antibodies (anti-Jo-1, anti-PL-7, anti-PL-12, anti-EJ), anti-Ku, anti-Scl-70, anti-NXP-2 or anti-HMG CoA. CONCLUSION Eight patients tested positive for at least one MSA or MAA. The prevalence of autoantibodies was low. Positivity for anti-SRP, anti-MDA-5, anti-Mi-2 and anti-SSA/Ro52 antibodies was seen in 4, 3, 1 and 1 patients, respectively. Ethnic differences and testing for autoantibodies during/after therapy could be responsible for the low positivity rate for autoantibodies.
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Affiliation(s)
- Avinash Sharma
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Dharmagat Bhattarai
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Anju Gupta
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
| | - Sandesh Guleria
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Amit Rawat
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Pandiarajan Vignesh
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Ravinder Garg
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Surjit Singh
- Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
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22
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The Significance of Autoantibodies in Juvenile Dermatomyositis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5513544. [PMID: 34840975 PMCID: PMC8626176 DOI: 10.1155/2021/5513544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 11/01/2021] [Indexed: 12/22/2022]
Abstract
Juvenile dermatomyositis is a chronic and rare autoimmune disorder classified into the spectrum of idiopathic inflammatory myopathies. Although this entity is mainly characterized by the presence of pathognomonic cutaneous lesions and proximal muscle weakness, the clinical manifestation can be highly heterogeneous; thus, diagnosis might be challenging. Current treatment recommendations for juvenile dermatomyositis, based mainly upon case series, include the use of corticosteroids, immunomodulatory, and immunosuppressive agents. Recently, several specific autoantibodies have been shown to be associated with distinct clinical phenotypes of classic dermatomyositis. There is a need to further evaluate their relevance in the formation of various clinical features. Furthermore, while providing more personalized treatment strategies, one should consider diversity of autoantibody-related subgroups of juvenile dermatomyositis.
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23
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Stenzel W, Goebel HH, Bader-Meunier B, Gitiaux C. Inflammatory myopathies in childhood. Neuromuscul Disord 2021; 31:1051-1061. [PMID: 34736626 DOI: 10.1016/j.nmd.2021.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 12/12/2022]
Abstract
Myositis in childhood can occur under different conditions and with various aetiologies, juvenile dermatomyositis (jDM) being by far the most frequent entity. The exact diagnostic workup and precise assessment of muscular as well as extramuscular involvement of organs in these systemic autoimmune diseases are relevant for specific and adjunct treatment of complications. Many new insights have become available with respect to the pathophysiological concepts as well as modern diagnostic measures and therapeutic approaches. Autoantibody detection in the serum of children with myositis is one of the major novelties that has become widely used and that is indeed helpful for diagnostic and prognostic measures. The pathophysiological relevance of type I interferons in jDM has been studied intensively in the past years. jDM is now seen as an acquired interferonopathy and first therapeutic consequences have been drawn from this pathogenic finding with the use of Janus-kinase inhibitors for severe and not otherwise treatable children.
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Affiliation(s)
- Werner Stenzel
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, Berlin 10117, Germany.
| | - Hans-Hilmar Goebel
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, Berlin 10117, Germany
| | - Brigitte Bader-Meunier
- Department of Pediatric Immunolgy, Hematology, Rheumatology and Reference Center for Rare Autoimmune Systemic Diseases (RAISE), Necker Enfants Malades Hospital, AP-HP Centre, Paris, France
| | - Cyril Gitiaux
- Department of Pediatric Clinical Neurophysiology and reference Centre for Neuromuscular Diseases "Nord-Est-Ile de France", Necker Enfants Malades Hospital, AP-HP Centre, Paris University, Paris, France
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24
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Kim H, Huber AM, Kim S. Updates on Juvenile Dermatomyositis from the Last Decade: Classification to Outcomes. Rheum Dis Clin North Am 2021; 47:669-690. [PMID: 34635298 DOI: 10.1016/j.rdc.2021.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Juvenile dermatomyositis (JDM) is a heterogeneous disease with new classification criteria and updates in myositis-specific autoantibody and myositis-associated antibody groups. There are many validated assessment tools for assessing disease activity in JDM. Future studies will optimize these tools and improve feasibility in clinical and research contexts. Genetic and environmental risk factors, mechanisms of muscle pathology, role of interferon, vascular markers, and changes in immune cells provide insights to JDM pathogenesis. Outcomes have improved, but chronic disease, damage, and mortality highlight the need for better outcome predictors and treatments. Increased collaboration of stakeholders may help overcome research barriers and improve JDM treatment.
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Affiliation(s)
- Hanna Kim
- Juvenile Myositis Pathogenesis and Therapeutics Unit, National Institute of Arthritis Musculoskeletal and Skin Diseases, National Institutes of Health, 10 Center Drive, Building 10, 12N-240, Bethesda, MD 20892, USA.
| | - Adam M Huber
- IWK Health Centre and Dalhousie University, Division of Pediatric Rheumatology, 5850 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
| | - Susan Kim
- University of California, San Francisco, 550 16th Street, San Francisco, CA 94158, USA
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25
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Ll Wilkinson MG, Deakin CT, Papadopoulou C, Eleftheriou D, Wedderburn LR. JAK inhibitors: a potential treatment for JDM in the context of the role of interferon-driven pathology. Pediatr Rheumatol Online J 2021; 19:146. [PMID: 34563217 PMCID: PMC8466894 DOI: 10.1186/s12969-021-00637-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/28/2021] [Indexed: 12/29/2022] Open
Abstract
Juvenile Idiopathic Inflammatory Myopathies (IIM) are a group of rare diseases that are heterogeneous in terms of pathology that can include proximal muscle weakness, associated skin changes and systemic involvement. Despite options for treatment, many patients continue to suffer resistant disease and lasting side-effects. Advances in the understanding of the immunopathology and genetics underlying IIM may specify new therapeutic targets, particularly where conventional treatment has not achieved a clinical response. An upregulated type I interferon signature is strongly associated with disease and could be a prime target for developing more specific therapeutics. There are multiple components of the IFN pathway that could be targeted for blockade therapy.Downstream of the cytokine receptor complexes are the Janus kinase-signal transducers and activators of transcription (JAK-STAT) pathway, which consists of JAK1-3, TYK2, and STAT1-6. Therapeutic inhibitors have been developed to target components of this pathway. Promising results have been observed in case studies reporting the use of the JAK inhibitors, Baricitinib, Tofacitinib and Ruxolitinib in the treatment of refractory Juvenile Dermatomyositis (JDM). There is still the question of safety and efficacy for the use of JAK inhibitors in JDM that need to be addressed by clinical trials. Here we review the future for the use of JAK inhibitors as a treatment for JDM.
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Affiliation(s)
- Meredyth G Ll Wilkinson
- Infection, Immunity and Inflammation Programme Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK.
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, University College London, London, UK.
- NIHR Biomedical Research Centre at GOSH, London, UK.
| | - Claire T Deakin
- Infection, Immunity and Inflammation Programme Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, University College London, London, UK
- NIHR Biomedical Research Centre at GOSH, London, UK
| | - Charalampia Papadopoulou
- Infection, Immunity and Inflammation Programme Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- Rheumatology, Great Ormond Street Hospital, Great Ormond Street, London, UK
| | - Despina Eleftheriou
- Infection, Immunity and Inflammation Programme Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- Rheumatology, Great Ormond Street Hospital, Great Ormond Street, London, UK
| | - Lucy R Wedderburn
- Infection, Immunity and Inflammation Programme Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- Centre for Adolescent Rheumatology Versus Arthritis at UCL UCLH and GOSH, University College London, London, UK
- NIHR Biomedical Research Centre at GOSH, London, UK
- Rheumatology, Great Ormond Street Hospital, Great Ormond Street, London, UK
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26
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Jiang W, Yang H, Li S, Tian X, Wang G. Clinical features, treatments and outcomes of calcinosis in adult patients with dermatomyositis: a single cohort study. Rheumatology (Oxford) 2021; 60:2958-2962. [PMID: 33249499 DOI: 10.1093/rheumatology/keaa618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/23/2020] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE The occurrence of calcinosis cutis as a clinical feature of dermatomyositis in adult patients is not well understood. Cohort studies of adult patients with calcinosis are rare. We systematically describe the clinical features, treatments and outcomes of adult patients with calcinosis. METHODS We initially enrolled 627 adult DM patients. Of those enrolled, 35 (5.6%) were found to have calcinosis. We analysed the clinical features associated with calcinosis in this subgroup. The risk factors associated with calcinosis were analysed using the Poisson regression model. RESULTS Multivariate analysis showed that a younger age at disease onset [odds ratio (OR) = 0.945, 95% CI 0.925, 0.966, P < 0.001], dysphagia (OR = 2.609, 95% CI 1.189, 5.728, P = 0.017), skin ulcer (OR = 5.705, 95% CI 3.041, 10.705, P < 0.001) and the presence of anti-nuclear matrix protein 2 antibody (OR = 5.917, 95% CI 2.754, 12.714, P < 0.001) were independently associated with calcinosis. In both the low- and high-dose prednisone treatment groups, no difference in treatment response was seen between the bisphosphonate treatment group and the group not receiving bisphosphonate treatment (P = 1.000 and P = 0.375, respectively). A follow-up study revealed that the mortality rate of the calcinosis group was 5.7%. Additionally, 60.6% of the cases had a chronic polycyclic disease course and 17.1% had mild complications secondary to calcinosis. CONCLUSION Calcinosis is an uncommon, but significant clinical feature in adult patients with DM. Bisphosphonates were not found to effectively treat calcinosis, however, the overall health outcomes of adult DM patients with calcinosis were favourable.
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Affiliation(s)
- Wei Jiang
- Department of Rheumatology, Beijing Key Lab for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Beijing, China
| | - Hanbo Yang
- Department of Rheumatology, Beijing Key Lab for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Beijing, China
| | - Sizhao Li
- Department of Rheumatology, Beijing Key Lab for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Beijing, China
| | - Xiaolan Tian
- Department of Rheumatology, Beijing Key Lab for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Beijing, China
| | - Guochun Wang
- Department of Rheumatology, Beijing Key Lab for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Beijing, China
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27
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Perron MM, Vasquez-Canizares N, Tarshish G, Wahezi DM. Myositis autoantibodies in a racially diverse population of children with idiopathic inflammatory myopathies. Pediatr Rheumatol Online J 2021; 19:92. [PMID: 34118936 PMCID: PMC8199392 DOI: 10.1186/s12969-021-00574-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/20/2021] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Juvenile idiopathic inflammatory myopathies (JIIMs) is a group of autoimmune disorders, including juvenile dermatomyositis (JDM), juvenile polymyositis (JPM) and overlap myositis, that are characterized by proximal muscle weakness, elevated levels of serum muscle enzymes, and pathognomonic skin findings. While the exact etiology of JIIMs is unclear, the presence of myositis specific autoantibodies (MSAs) have been associated with certain clinical phenotypes, organ involvement and disease prognosis. To date, there have been few studies of the associations between MSA presence and patient ethnicity. It is important to understand the extent to which ethnicity impacts disease manifestations, organ involvement and clinical outcomes. The goal of our study is to determine MSA and myositis associated autoantibody (MAA) presence, clinical phenotype, and disease course in a racially diverse population of pediatric patients with JIIMs. METHODS Patients age 2-21 years with a prior diagnosis of JDM, JPM or overlap myositis, who had been tested for MSA/MAA, were eligible for study inclusion. Clinical and laboratory data were collected retrospectively via manual chart review in this single-center study. Descriptive statistics were performed to summarize each variable. Given the small sample size, non-parametric testing was performed using Fischer's exact test, Wilcoxon rank sum test and Kruskal-Wallis test. RESULTS Thirty one patients were included in the analysis. Race and ethnicity were self-reported as Hispanic (48.4%), white (25.8%), and Black (25.8%). The most prevalent MSAs were anti-MDA5 (25.8%), anti-p155/140 (22.6%) and anti-MJ (19.4%). Presence of autoantibodies (p = 0.04) and pulmonary disease (p = 0.03) were significantly higher in patients of Black or Hispanic descent compared with white descent. Anti-MDA5 antibodies, cutaneous ulceration, cardiopulmonary involvement, hospitalizations and one death were only reported in patients with Black or Hispanic descent. Patients with anti-MDA5 antibodies were more likely to be male (p = 0.04) and to have cutaneous ulceration (p = 0.02). CONCLUSIONS This study describes the prevalence of MSA/MAA in a racially diverse group of patients with JIIM and further delineates clinical phenotype and disease complications in these groups. We found a relatively high proportion of children with anti-MDA5 antibodies and described potentially worse clinical courses in children of Black or Hispanic descent. Further investigation is warranted to examine these findings.
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Affiliation(s)
- Megan Mariko Perron
- Children's Hospital at Montefiore, 3415 Bainbridge Ave, Bronx, NY, 10467, USA. .,Children's Hospital Colorado, 13123 East 16th Avenue, Aurora, CO, 80045, USA.
| | - Natalia Vasquez-Canizares
- grid.414114.50000 0004 0566 7955Children’s Hospital at Montefiore, 3415 Bainbridge Ave, Bronx, NY 10467 USA
| | - Gabriel Tarshish
- grid.414114.50000 0004 0566 7955Children’s Hospital at Montefiore, 3415 Bainbridge Ave, Bronx, NY 10467 USA
| | - Dawn M. Wahezi
- grid.414114.50000 0004 0566 7955Children’s Hospital at Montefiore, 3415 Bainbridge Ave, Bronx, NY 10467 USA
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In vitro diagnostics for the medical dermatologist. Part I: Autoimmune tests. J Am Acad Dermatol 2021; 85:287-298. [PMID: 33852926 DOI: 10.1016/j.jaad.2021.02.090] [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: 10/19/2020] [Revised: 02/10/2021] [Accepted: 02/24/2021] [Indexed: 11/24/2022]
Abstract
Despite the expansion of available in vitro laboratory tests at a rate far exceeding that of dermatologic pharmaceuticals, the existing literature is dominated by discussion of the latter. With the advent of numerous new tests, it can be difficult for practicing dermatologists to stay up-to-date on the available options, methodologies, and recommendations for when to order one test over another. Understanding the inherent strengths and weaknesses of these options is necessary to inform appropriate ordering and proper interpretation of the results. The first article in this continuing medical education series summarizes information on methodology, test characteristics, and limitations of several in vitro laboratory tests used for the work up of undifferentiated patients suspected of having dermatologic autoimmune diseases and it provides a general guide to ordering these tests.
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Okiyama N. Clinical Features and Cutaneous Manifestations of Juvenile and Adult Patients of Dermatomyositis Associated with Myositis-Specific Autoantibodies. J Clin Med 2021; 10:jcm10081725. [PMID: 33923564 PMCID: PMC8073628 DOI: 10.3390/jcm10081725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/16/2022] Open
Abstract
Dermatomyositis is one of the idiopathic inflammatory myopathies, which is characterized with specific skin manifestations, and considered as an autoimmune disease. Dermatomyositis is a heterogeneous disorder with various presences, severities and characteristics of myositis, dermatitis, and interstitial lung disease. Our and others' data showed that myositis-specific autoantibodies have been associated with distinct clinical features. This article reviewed the epidemiology and characteristic clinical features of the different types of antibody-associated dermatomyositis in adult and juvenile patients, which include the severity of myopathy, the potential complication of interstitial lung disease, potential association with malignancies, and characteristic cutaneous manifestations.
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Affiliation(s)
- Naoko Okiyama
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-8575, Japan
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Association of anti-NXP2 antibody with clinical characteristics and outcomes in adult dermatomyositis: results from clinical applications based on a myositis-specific antibody. Clin Rheumatol 2021; 40:3695-3702. [PMID: 33712891 DOI: 10.1007/s10067-021-05667-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/02/2021] [Accepted: 02/23/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The aim was to study and compare the clinical manifestations, auxiliary examinations, and therapeutic responses in patients with different myositis-specific antibody (MSA) types. METHOD We retrospectively investigated the medical records of 143 hospitalized dermatomyositis patients, all of whom were tested for MSAs, and performed follow-up. Patients were divided into groups with and without anti-nuclear matrix protein 2 (NXP2) antibodies (17 vs 126 patients). Demographic, clinical manifestation (occurring at any time during the disease course), imaging, laboratory, treatment response, and survival data were collected for statistical analyses. RESULTS Adult dermatomyositis patients with anti-NXP2 antibodies were more prone to dysphagia (P<0.001), had higher levels of muscle injury markers (CK peak, P=0.007; CK peak>1000 IU/L, P<0.001; CK-MB, P=0.002), were younger at onset (P=0.008), and were less likely to present with interstitial lung disease (P=0.016) than the anti-NXP2 antibody-negative subgroup. Multivariable logistic regression analysis showed that onset age (OR=0.96 CI 95%: 0.924-0.999, P=0.043) and dysphagia (OR=7.088, CI 95%: 1.824-27.536, P=0.005) were independent risk factors for anti-NXP2 antibody positivity. Kaplan-Meier survival analysis did not reveal that dermatomyositis patients with anti-NXP2 antibodies have a relatively worse prognosis. However, the disease course was more frequently polycyclic, and 68.75% of patients had a relapsing-remitting disease course. More than half (52.94%) of those who showed no response to treatment used at least 3 disease-modifying antirheumatic drugs. CONCLUSIONS We show the important clinical features of and risk factors for this unique antibody-mediated form of dermatomyositis. Although these patients had a relatively low mortality rate, they were prone to recurrence, and treatment was challenging. Key points • The clinical features and risk factors for adult dermatomyositis patients with anti-NXP2 antibodies. • The impact of anti-NXP2 antibody on survival outcomes.
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Cao X, Zhang M, Lu Z, Li C, Zeng Y, Fan J, Yu K. Multiple neurological manifestations in a patient with systemic lupus erythematosus and anti-NXP2-positive myositis: A case report. Medicine (Baltimore) 2021; 100:e25063. [PMID: 33725895 PMCID: PMC7969320 DOI: 10.1097/md.0000000000025063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/15/2021] [Indexed: 01/05/2023] Open
Abstract
RATIONALE Systemic lupus erythematosus (SLE) is a complex autoimmune inflammatory disease that frequently affects various organs. Neuropsychiatric manifestations in SLE patients, known as neuropsychiatric SLE, are clinically common. However, the principal manifestation of cranial neuropathy in patients with SLE and comorbidities is relatively rare. PATIENT CONCERNS In this report, we describe a 51-year-old Chinese woman who was admitted with a chief complaint of chronic-onset facial paresthesia, dysphagia, and choking cough when drinking water, accompanied by slurred speech, salivation, and limb weakness. The blood autoantibody test results showed that many SLE-associated antibodies were positive. Meanwhile, anti-nuclear matrix protein 2 (NXP2) antibody was strongly positive in the idiopathic inflammatory myopathy (IIM) spectrum test from the serum. Muscle biopsy indicated inflammatory infiltration of the muscle fiber stroma. DIAGNOSES Taking into account the clinical manifestations and laboratory tests of the present case, the diagnosis of SLE and probable IIM was established. INTERVENTIONS Corticosteroids and additional gamma globulin were administered and the clinical symptoms were relieved during the treatment process. OUTCOMES Unfortunately, the patient experienced sudden cardiac and respiratory arrest. Multiple system dysfunctions exacerbated disease progression, but in the present case, we speculated that myocardial damage resulting from SLE could explain why she suddenly died. LESSONS To our knowledge, multiple neurological manifestations in patients with SLE and anti-NXP2-positive myositis are rare. Note that SLE is still a life-threatening disease that causes multiple system dysfunctions, which requires increasing attention.
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Pachman LM, Nolan BE, DeRanieri D, Khojah AM. Juvenile Dermatomyositis: New Clues to Diagnosis and Therapy. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2021; 7:39-62. [PMID: 34354904 PMCID: PMC8336914 DOI: 10.1007/s40674-020-00168-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW To identify clues to disease activity and discuss therapy options. RECENT FINDINGS The diagnostic evaluation includes documenting symmetrical proximal muscle damage by exam and MRI, as well as elevated muscle enzymes-aldolase, creatine phosphokinase, LDH, and SGOT-which often normalize with a longer duration of untreated disease. Ultrasound identifies persistent, occult muscle inflammation. The myositis-specific antibodies (MSA) and myositis-associated antibodies (MAA) are associated with specific disease course variations. Anti-NXP-2 is found in younger children and is associated with calcinosis; anti-TIF-1γ+ juvenile dermatomyositis has a longer disease course. The diagnostic rash-involving the eyelids, hands, knees, face, and upper chest-is the most persistent symptom and is associated with microvascular compromise, reflected by loss of nailfold (periungual) end row capillaries. This loss is associated with decreased bioavailability of oral prednisone; the bioavailability of other orally administered medications should also be considered. At diagnosis, at least 3 days of intravenous methyl prednisolone may help control the HLA-restricted and type 1/2 interferon-driven inflammatory process. The requirement for avoidance of ultraviolet light exposure mandates vitamin D supplementation. SUMMARY This often chronic illness targets the cardiovascular system; mortality has decreased from 30 to 1-2% with corticosteroids. New serological biomarkers indicate occult inflammation: ↑CXCL-10 predicts a longer disease course. Some biologic therapies appear promising.
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Affiliation(s)
- Lauren M. Pachman
- Northwestern Feinberg School of Medicine, Divisions of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, USA
- Cure JM Center of Excellence in Juvenile Myositis Research and Care, The Stanley Manne Research Center for Children, Chicago, IL, USA
| | - Brian E. Nolan
- Northwestern Feinberg School of Medicine, Divisions of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, USA
| | - Deidre DeRanieri
- Northwestern Feinberg School of Medicine, Divisions of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, USA
| | - Amer M. Khojah
- Northwestern Feinberg School of Medicine, Divisions of Pediatric Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, USA
- Division of Allergy/Immunology, Chicago, IL, USA, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, USA
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Hodgkinson LM, Wu TT, Fiorentino DF. Dermatomyositis autoantibodies: how can we maximize utility? ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:433. [PMID: 33842654 PMCID: PMC8033377 DOI: 10.21037/atm-20-5175] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The past 15 years has seen significant advances in the characterization of myositis-specific autoantibodies (MSAs) and their associated phenotypes in patients with dermatomyositis (DM). As more careful studies are performed, it is clear that unique combinations of clinical and pathological phenotypes are associated with each MSA, despite the fact that there is considerable heterogeneity within antibody classes as well as overlap across the groups. Because risk for interstitial lung disease (ILD), internal malignancy, adverse disease trajectory, and, potentially response to therapy differ by DM MSA group, a deeper understanding of MSAs and validation and standardization of assays used for detection are critical for optimizing diagnosis and treatment. Like any test, the diagnostic sensitivity and specificity of assays for various MSAs is not perfect. Currently tests for MSAs are helpful at minimum for a clinician to assess relative risk or contribute to diagnosis and perhaps counsel the appropriate patient about what to expect. With international standardization and larger studies it is likely that more antibody tests will make their way into formal schemata for diagnosis and actionable risk assessment in DM. In this review, we summarize key considerations for interpreting the clinical and pathologic associations with MSA in DM and identify critical gaps in knowledge and practice that will maximize their clinical utility and utility for understanding disease pathogenesis.
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Affiliation(s)
| | - Tiffany Tingshuen Wu
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA
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Castillo RL, Femia AN. Covert clues: the non-hallmark cutaneous manifestations of dermatomyositis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:436. [PMID: 33842657 PMCID: PMC8033358 DOI: 10.21037/atm-20-5252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Dermatomyositis (DM) is a strikingly heterogenous disease characterized by a broad and ever-evolving spectrum of cutaneous manifestations that transcend the classic “hallmarks” defined by Peter and Bohan in 1975. Despite the increasing preponderance and ubiquity of autoantibody, radiologic, and electrophysiologic testing, the diagnosis of DM still hinges largely on prompt detection of cutaneous manifestations of this condition. While pathognomonic cutaneous features of DM are more readily recognizable, many patients present with subtle and/or atypical skin manifestations, and diagnosis of DM may require clinician identification of these cutaneous clues. In this review, we highlight several of the lesser-known skin manifestations of DM, specifically, panniculitis, diffuse subcutaneous edema, erythroderma, calcinosis, ulceration, flagellate erythema, Wong-type DM, gingival telangiectasias, and the ovoid palatal patch. We describe the clinical and histopathologic presentation of these cutaneous findings. While manifesting less frequently than the heliotrope rash, Gottron’s papules, and Gottron’s sign, these cutaneous clues are equally important for clinicians to recognize in order to facilitate timely diagnosis and early intervention.
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Affiliation(s)
- Rochelle L Castillo
- Department of Medicine, Division of Rheumatology, NYU Grossman School of Medicine, New York, NY, USA
| | - Alisa N Femia
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, NY, USA
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Yamasaki Y, Kobayashi N, Akioka S, Yamazaki K, Takezaki S, Nakaseko H, Ohara A, Nishimura K, Nishida Y, Sato S, Kishi T, Hashimoto M, Mori M, Okazaki Y, Kuwana M, Ohta A. Clinical impact of myositis-specific autoantibodies on long-term prognosis of juvenile idiopathic inflammatory myopathies: multicenter study. Rheumatology (Oxford) 2021; 60:4821-4831. [PMID: 33576399 DOI: 10.1093/rheumatology/keab108] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/17/2021] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVES This study aimed to investigate the clinical characteristics, treatment, and prognosis of juvenile idiopathic inflammatory myopathies (JIIM) in Japan for each myositis-specific autoantibody (MSA) profile. METHODS A multicenter, retrospective study was conducted using data of patients with JIIM at nine pediatric rheumatology centers in Japan. Patients with MSA profiles, determined by immunoprecipitation using stored serum from the active stage, were included. RESULTS MSA were detected in 85 of 96 cases eligible for the analyses. Over 90% of the patients in this study had one of the following three MSA types: anti-MDA5 (n = 31), anti-TIF1γ (n = 25), and anti-NXP2 (n = 25) antibodies. Gottron papules and periungual capillary abnormalities were the most common signs of every MSA group in the initial phase. The presence of interstitial lung disease (ILD) was the highest risk factor for patients with anti-MDA5 antibodies. Most patients were administered multiple drug therapies: glucocorticoids and methotrexate were administered to patients with anti-TIF1γ or anti-NXP2 antibodies. Half of the patients with anti-MDA5 antibodies received more than three medications including intravenous cyclophosphamide, especially patients with ILD. Patients with anti-MDA5 antibodies were more likely to achieve drug-free remission (29% vs 21%) and less likely to relapse (26% vs 44%) than others. CONCLUSION Anti-MDA5 antibodies are the most common MSA type in Japan, and patients with this antibody are characterized by ILD at onset, multiple medications including intravenous cyclophosphamide, drug-free remission, and a lower frequency of relapse. New therapeutic strategies are required for other MSA types.
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Affiliation(s)
- Yuichi Yamasaki
- Department of Pediatrics, Kagoshima University Hospital, Kagoshima, Japan
| | - Norimoto Kobayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shinji Akioka
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuko Yamazaki
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | | | - Haruna Nakaseko
- Department of Infection and Immunology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Asami Ohara
- Department of Infection and Immunology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Kenichi Nishimura
- Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yutaka Nishida
- Department of Pediatrics, Graduate School of Medicine, Gunma University, Maebashi, Japan
| | - Satoshi Sato
- Department of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
| | - Takayuki Kishi
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Motomu Hashimoto
- Department of Pediatrics, Kagoshima University Hospital, Kagoshima, Japan
| | - Masaaki Mori
- Department of Lifetime Clinical Immunology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuka Okazaki
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
| | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
| | - Akiko Ohta
- Division of Public Health, Department of Social Medicine, Saitama Medical University Faculty of Medicine, Moroyama, Saitama, Japan
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Tansley SL, Li D, Betteridge ZE, McHugh NJ. The reliability of immunoassays to detect autoantibodies in patients with myositis is dependent on autoantibody specificity. Rheumatology (Oxford) 2021; 59:2109-2114. [PMID: 32030410 PMCID: PMC7382594 DOI: 10.1093/rheumatology/keaa021] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/30/2019] [Indexed: 12/18/2022] Open
Abstract
Objectives In order to address the reliability of commercial assays to identify myositis-specific and -associated autoantibodies, we aimed to compare the results of two commercial immunoassays with the results obtained by protein immunoprecipitation. Methods Autoantibody status was determined using radio-labelled protein immunoprecipitation for patients referred to our laboratory for myositis autoantibody characterization. For each autoantibody of interest, the sera from 25 different patients were analysed by line blot (Euroline Myositis Antigen Profile 4, EuroImmun, Lübeck, Germany) and dot blot (D-Tek BlueDiver, Diagnostic Technology, Belrose, NSW, Australia). Sera from 134 adult healthy controls were analysed. Results Overall commercial assays performed reasonably well, with high agreement (Cohen’s κ >0.8). Notable exceptions were the detection of rarer anti-synthetases with κ < 0.2 and detection of anti-TIF1γ, where κ was 0.70 for the line blot and 0.31 for dot blot. Further analysis suggested that the proportion of patients with anti-TIF1γ may recognize a conformational epitope, limiting the ability of blotting-based assays that utilize denatured antigen to detect this clinically important autoantibody. A false-positive result occurred in 13.7% of samples analysed by line blot and 12.1% analysed by dot blot. Conclusion The assays analysed do not perform well for all myositis-specific and -associated autoantibodies and overall false positives are relatively common. It is crucial that clinicians are aware of the limitations of the methods used by their local laboratory. Results must be interpreted within the clinical context and immunoprecipitation should still be considered in selected cases, such as apparently autoantibody-negative patients where anti-synthetase syndrome is suspected.
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Affiliation(s)
- Sarah L Tansley
- Department of Pharmacy and pharmacology, University of Bath, Bath, UK
- Correspondence to: Sarah Tansley, University of Bath, Claverton Down, Bath BA2 7AY, UK. E-mail:
| | - Danyang Li
- Department of Pharmacy and pharmacology, University of Bath, Bath, UK
| | - Zoe E Betteridge
- Department of Pharmacy and pharmacology, University of Bath, Bath, UK
| | - Neil J McHugh
- Department of Pharmacy and pharmacology, University of Bath, Bath, UK
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Wang X, Ding Y, Zhou Z, Hou J, Xu Y, Li J. Clinical characteristics and poor predictors of anti-NXP2 antibody-associated Chinese JDM children. Pediatr Rheumatol Online J 2021; 19:6. [PMID: 33407621 PMCID: PMC7788734 DOI: 10.1186/s12969-020-00492-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 12/09/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Juvenile dermatomyositis (JDM) is a rare and sometimes fatal disease in children. The anti-NXP2 antibody is one of the most common antibodies and muscle ischaemia associated with NXP2 autoantibodies was a severe subtype of JDM. Further information is needed regarding clinical characteristics and factors associated with poor prognosis. But there are no reports about clinical characteristics and high risk factor of poor prognosis. For the first time, we introduced the clinical characteristics and poor predictors of anti-NXP2 antibody-associated juvenile dermatomyositis in Chinese children. METHODS Twenty-six patients with anti-NXP2 antibody-related JDM from 85 JDM Chinese patients were diagnosed from January 2016 to November 2019. Logistic regression was used to analyze the risk factors for refractory cases and mortality. RESULTS The ratio of male to female was 1:1.9. The median age of onset was 4.5 (1-13) years. Twenty-four cases (92.3%) had rash and muscle weakness. Treatments included glucocorticoids, immunosuppressive agents, biological agents (7 cases), plasma exchange, Janus kinase inhibitor (7 cases) and autologous stem cell transplant (1 case). Refractory JDM patients (11/26, 42.3%) were associated with edema, skin ulcer, muscle strength<=grade 3, CD4/CD8 ratio < 1.4 and ferritin > 200μg/ml. Among 6 cases (6/26, 23.1%) with severe gastrointestinal involvement, 5 cases died and 1 case survived after autologous stem cell transplant (ASCT). The risk factors for gastrointestinal involvement and mortality were edema, skin ulcer, severe muscle weakness (dysphagia/ hoarseness/ soft voice), BMI < 15 and ANA positive. CONCLUSIONS Edema, skin ulcer and severe muscle weakness predicted refractory disease, GI involvement, and mortality in anti-NXP2 antibody-positive JDM of Chinese children. Decreased CD4/CD8 ratio and high ferritin related with refractory cases, and very low BMI and ANA (+) are probably, associated with gastrointestinal involvement and mortality. TRIAL REGISTRATION http://www.chictr.org.cn/showproj.aspx?proj=49846 .
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Affiliation(s)
- Xinning Wang
- grid.418633.b0000 0004 1771 7032Department of Rheumatology and Immunology, The Affiliated Children’s Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020 China
| | - Yuchuan Ding
- grid.418633.b0000 0004 1771 7032Department of Rheumatology and Immunology, The Affiliated Children’s Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020 China
| | - Zhixuan Zhou
- Department of Rheumatology and Immunology, The Affiliated Children's Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020, China.
| | - Jun Hou
- grid.418633.b0000 0004 1771 7032Department of Rheumatology and Immunology, The Affiliated Children’s Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020 China
| | - Yingjie Xu
- grid.418633.b0000 0004 1771 7032Department of Rheumatology and Immunology, The Affiliated Children’s Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020 China
| | - Jianguo Li
- Department of Rheumatology and Immunology, The Affiliated Children's Hospital, Capital Institute of Pediatrics, 2 Yabao Road, Chaoyang District, Beijing, 100020, China.
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Xu Y, Ma X, Zhou Z, Li J, Hou J, Zhu J, Kang M, Lai J, Li X. Gastrointestinal perforation in anti-NXP2 antibody-associated juvenile dermatomyositis: case reports and a review of the literature. Pediatr Rheumatol Online J 2021; 19:2. [PMID: 33407602 PMCID: PMC7789137 DOI: 10.1186/s12969-020-00486-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 12/09/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND To summarize the characteristics of gastrointestinal (GI) perforation in anti-nuclear matrix protein 2 (NXP2) antibody-associated juvenile dermatomyositis (JDM). METHODS Five patients with GI perforation from a JDM cohort of 120 cases are described. Relevant literature was reviewed. RESULTS Five patients, including four females and one male, were included in the study. The age of onset of these patients ranged from 3.3 to 9.5 years with the median age of 5.0 years. When these patients were complicated by GI perforation, childhood myositis assessment score (CMAS) ranged from 1 to 5 with the median score of 2. Myositis-specific antibody (MSA) spectrum analysis indicated that the five patients were anti-NXP2 antibody positive. The initial symptoms of GI perforation were progressive abdominal pain and intermittent fever. Two patients also presented with ureteral calculus with hydronephrosis and ureteral stricture. Surgery was performed in four patients. One patient failed to undergo a repair as the perforation was high in position. For the other three patients, perforation repair was successful, of which two patients failed due to recurrent perforation. At 24 months postoperative follow-up, one patient was in complete remission on prednisone (Pred) and methotrexate (MTX) treatment, and her ureteral stricture had disappeared. The other four patients died. Adding these cases with 16 other patients described in the literature, the symptom at onset was progressive abdominal pain, which often occurred within 10 months after JDM was diagnosed. Perforation most commonly occurred in the duodenum, although it also occurred at multiple sites or was recurrent. The mortality rate of GI perforation in JDM was 38% (8/21). CONCLUSIONS All the five perforation cases in our study subjected to MSA analysis were anti-NXP2 antibody positive. The symptom at onset was abdominal pain. The most common site of perforation was the duodenum in the retroperitoneum, and the lack of acute abdominal manifestations prevented early diagnosis. GI perforation may be a fatal complication in JDM, and early diagnosis is very important. More research is needed to determine the pathogenesis and predictive factors of GI perforation in JDM.
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Affiliation(s)
- Yingjie Xu
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Xiaolin Ma
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Zhixuan Zhou
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Jianguo Li
- Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China.
| | - Jun Hou
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Jia Zhu
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Min Kang
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Jianming Lai
- grid.418633.b0000 0004 1771 7032Department of Rheumatology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
| | - Xiaohui Li
- grid.418633.b0000 0004 1771 7032Department of Cardiology, Capital Institute of Pediatrics-Peking University Teaching Hospital, 2 Yabao Road, Beijing, China
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Toplak N, Pimpale Chavan P, Rosina S, Dallos T, Rotem Semo O, Aguiar CL, Khubchandani R, Ravelli A, Patwardhan A. Is Anti-NXP2 Autoantibody a Risk Factor for Calcinosis and Poor Outcome in Juvenile Dermatomyositis Patients? Case Series. Front Pediatr 2021; 9:810785. [PMID: 35280444 PMCID: PMC8904416 DOI: 10.3389/fped.2021.810785] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/20/2021] [Indexed: 11/27/2022] Open
Abstract
Juvenile dermatomyositis (JDM) has a wide spectrum of clinical presentations. In the last decade, several myositis-specific antibodies have been identified in patients with JDM and connected with specific organ involvement or specific clinical picture. It has been published that the presence of anti-NXP2 autoantibodies presents a risk for calcinosis in patients with JDM. We aimed to investigate the prevalence of calcinosis and response to the treatment in JDM patients with anti-NXP2. In a retrospective, multinational, multicenter study, data on 26 JDM (19 F, 7 M) patients with positive anti-NXP2 were collected. The mean age at disease presentation was 6.5 years (SD 3.7), the median diagnosis delay was 4 months (range 0.5-27 months). Patients were divided into two groups (A and B) based on the presence of calcinosis, which occurred in 42% of anti-NXP2 positive JDM patients (group A). Four patients already had calcinosis at presentation, one developed calcinosis after 4 months, and 6 developed calcinosis later in the disease course (median 2 years, range 0.8-7.8). The differences in laboratory results were not statistically significant between the groups. The mean age at disease presentation (5.2/7.5 years) trended toward being younger in group A. Children with calcinosis were treated with several combinations of drugs. In four cases, rituximab and, in one case, anti-TNF alpha agents were used successfully. Disease outcome (by evaluation of the treating physician) was excellent in four, good in two, stable in two, and poor in three patients. None of the patients from group B had a poor disease outcome. In conclusion, JDM patients with anti-NXP2 are prone to develop calcinosis, especially if they present with the disease early, before 5 years of age. The development of calcinosis is associated with worse disease outcomes. The combination of several immunomodulatory drugs and biologic drugs can stop calcinosis progression; however, there are no evidence-based therapies for treating calcinosis in JDM patients.
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Affiliation(s)
- Natasa Toplak
- Department of Allergology, Rheumatology and Clinical Immunology, Faculty of Medicine, University Children's Hospital, University Medical Centre, Ljubljana, Slovenia
| | | | - Silvia Rosina
- Pediatric Rheumatology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Tomas Dallos
- Department of Paediatrics, Comenius University Medical School, National Institute of Children's Diseases, Bratislava, Slovakia
| | - Oz Rotem Semo
- Section of Pediatric Rheumatology, University of Chicago Medical Center, Chicago, IL, United States
| | - Cassyanne L Aguiar
- Pediatric Rheumatology, Eastern Virginia Medical School (EVMS), Children's Hospital of The King's Daughters, Norfolk, VA, United States
| | | | - Angelo Ravelli
- Direzione Scientifica, IRCCS Istituto Giannina Gaslini, Genoa, Italy.,Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-Infantili (DiNOGMI), Universita Degli Studi di Genova, Genoa, Italy
| | - Anjali Patwardhan
- Pediatric Rheumatology, University of Missouri, School of Medicine, Columbia, MO, United States
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Sag E, Demir S, Bilginer Y, Talim B, Haliloglu G, Topaloglu H, Ozen S. Clinical features, muscle biopsy scores, myositis specific antibody profiles and outcome in juvenile dermatomyositis. Semin Arthritis Rheum 2020; 51:95-100. [PMID: 33360233 DOI: 10.1016/j.semarthrit.2020.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/12/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Juvenile dermatomyositis (JDM) is the most common inflammatory myopathy of childhood. OBJECTIVE To analyze clinical features, paraclinical examinations, MSAs, treatment response and long-term outcome in a JDM cohort METHODS: 58 patients (35F, 23 M) from a tertiary referral center in the last two decades are included. RESULTS Mean age at onset was 8.1 ± 4.3, with a mean follow-up period of 5.66±3.59 years. Dermatological manifestations (91%) and muscle weakness (76%) were the key diagnostic elements. Elevated serum creatine kinase levels (86%), electromyography (23/25), muscle MRI (12/15), and muscle biopsy (n = 35) were compatible with the diagnosis. Out of 46 patients tested, 34 (76%) had autoantibodies, with NXP2 (21.7%), followed by TIF1g (17.4%), MDA5 (8.7%), and Mi-2 (8.7%). Presence of TIF1g and NXP2 indicated a severe course; and Ku a much severe course compared to previous studies. Corticosteroids (100%) combined with methotrexate (93%) was the initial treatment. Biological disease modifying anti-rheumatic drugs (DMARDs) were used in 22% of the cohort. Calcinosis (36%) was the most common long-term complication, associated with disease onset ≤6 years, higher muscle biopsy scores and MDA5 positivity. Complete remission was achieved in 65.5% of the patients in a median 24 (IQR 11.8-42.5) months with a relapse rate of 26.3%. 43.9% of NXP2 and 33.3% of TIF-1 g positive patients had a relapse. Course was monophasic (31%), polyphasic (17.2%), chronic (51.8%) without mortality. CONCLUSION Integration of clinical features with laboratory and biopsy findings may help to predict prognosis and guide treatment in JDM. In our cohort calcinosis was associated with age, MDA5 autoantibodies, and muscle biopsy scores.
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Affiliation(s)
- Erdal Sag
- Division of Pediatric Rheumatology, Department of Pediatrics, Hacettepe University, Ankara 06100, Turkey
| | - Selcan Demir
- Division of Pediatric Rheumatology, Department of Pediatrics, Hacettepe University, Ankara 06100, Turkey
| | - Yelda Bilginer
- Division of Pediatric Rheumatology, Department of Pediatrics, Hacettepe University, Ankara 06100, Turkey
| | - Beril Talim
- Pediatric Pathology Unit, Department of Pediatrics, Hacettepe University, Ankara, Turkey
| | - Goknur Haliloglu
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University, Ankara, Turkey
| | - Haluk Topaloglu
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University, Ankara, Turkey
| | - Seza Ozen
- Division of Pediatric Rheumatology, Department of Pediatrics, Hacettepe University, Ankara 06100, Turkey.
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Gupta L, Naveen R, Gaur P, Agarwal V, Aggarwal R. Myositis-specific and myositis-associated autoantibodies in a large Indian cohort of inflammatory myositis. Semin Arthritis Rheum 2020; 51:113-120. [PMID: 33360322 DOI: 10.1016/j.semarthrit.2020.10.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/11/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND The Idiopathic Inflammatory Myositis (IIM) are heterogenous with distinct clinical phenotypes associated with specific myositis specific antibodies (MSA) and myositis associated antibodies (MAA). OBJECTIVES To evaluate the frequency, pattern and associations of MSA/MAA in a large Indian cohort of IIM. METHODS Adult and juvenile IIM (2017 ACR/EULAR criteria), were recruited in the MyoCite cohort between 2017and 2020 at a tertiary center in Northern India. Standardized clinical and laboratory variables were extracted from the database archive. Serum samples were evaluated for the presence of MSAs/MAAs by Line immunoassay and anti-nuclear antibodies (ANA) by Immunofluorescence assay (IFA). The prevalence and clinical associations of different MSA/MAAs were assessed. RESULTS MSA and MAAs were tested in 250 IIM patients (214 adults, 36 children) of age [40 (30-49), 13 (7.5-16) years] and disease duration [ 7 (3-17), 6 (2-17) months] comprising predominantly of Dermatomyositis (DM) followed by Overlap myositis (OM). MSAs/MAAs were found in 148 (59.2%, 60.7% adults and 50% JIIM), of which two-thirds were MSA (95, 64% overall). Two cases (0.8%) had more than one MSA. In adult IIM, the most common MSA was anti-Jo-1 (10%), whereas it was anti-MDA5 and anti-NXP2 4 (11%) each in Juvenile IIM (JIIM). 76.0% (172/226) were ANA positive, with speckled pattern being the most common (37%,). Nearly two-thirds (54, 61%) of those with negative ANA had MSA/ MAA. Nearly half (18/54, 54.6%) had MSA associated with cytoplasmic patterns. ARS (anti-aminoacyl-tRNA synthetase) were associated with mechanic's hands (OR-7.06), ILD (OR-4.4), and arthritis (OR-2.23). Clinical associations of anti-Jo-1 and non-Jo-1 Anti synthetase syndrome (ASS) did not differ. Anti-MDA-5 associated with oral ulcers (OR-8.3), fever (OR-8.6) and weight loss (OR-7.35) in adults, and arthritis (OR-11.5), and periungual rash (OR-9.6) in children. Anti-TIF-1γ associated with photosensitivity (OR-10.44) and malignancy (OR-34) in adults, and cuticular overgrowth (OR-11.2) in children. CONCLUSION Myositis autoantibodies are seen in two-thirds IIMs and are associated with distinct clinical subsets. Jo-1 and non-Jo-1 ASS exhibit similar characteristics. The association of anti-TIF1 γ with malignancy was confirmed in adults. MSA/MAA were present in two-thirds of those with negative ANA and MSA were nearly always mutually exclusive.
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Affiliation(s)
- Latika Gupta
- Department of Clinical Immunology and Rheumatology, SGPGIMS, Raebareli Road, Lucknow 226014, India.
| | - R Naveen
- Department of Clinical Immunology and Rheumatology, SGPGIMS, Raebareli Road, Lucknow 226014, India
| | | | - Vikas Agarwal
- Department of Clinical Immunology and Rheumatology, SGPGIMS, Raebareli Road, Lucknow 226014, India
| | - Rohit Aggarwal
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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McCann LJ, Hedrich CM. Is it time to re-think juvenile-onset Rheumatic and Musculoskeletal Diseases? - First steps towards individualised treatments to meet agreed targets. Clin Immunol 2020; 223:108647. [PMID: 33310069 DOI: 10.1016/j.clim.2020.108647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Liza J McCann
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, UK; Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, UK
| | - Christian M Hedrich
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, UK; Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, UK.
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Heinen A, Schnabel A, Brück N, Smitka M, Wolf C, Lucas N, Dollinger S, Hahn G, Günther C, Berner R, Lee-Kirsch M, Schuetz C. Interferon signature guiding therapeutic decision making: ruxolitinib as first-line therapy for severe juvenile dermatomyositis? Rheumatology (Oxford) 2020; 60:e136-e138. [DOI: 10.1093/rheumatology/keaa657] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/31/2020] [Accepted: 09/10/2020] [Indexed: 11/14/2022] Open
Affiliation(s)
- André Heinen
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Anja Schnabel
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Normi Brück
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Martin Smitka
- Department of Neuropediatrics, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Christine Wolf
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Nadja Lucas
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Stefanie Dollinger
- Deutsches Zentrum für Kinder- und Jugendrheumatologie, Garmisch-Partenkirchen, Germany
| | - Gabriele Hahn
- Department of Radiology, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Claudia Günther
- Department of Dermatology, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Reinhard Berner
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Min Ae Lee-Kirsch
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
| | - Catharina Schuetz
- Department of Pediatrics, Medizinische Fakultät Carl Gustav Carus, Dresden, Germany
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Li L, Liu C, Cheng L, Yan S, Chen H, Li Y. Assessment of diagnostic utility, clinical phenotypic associations, and prognostic significance of anti-NXP2 autoantibody in patients with idiopathic inflammatory myopathies: a systematic review and meta-analysis. Clin Rheumatol 2020; 40:819-832. [PMID: 32681367 DOI: 10.1007/s10067-020-05291-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/06/2020] [Accepted: 07/13/2020] [Indexed: 11/25/2022]
Abstract
The objectives of this study are to analyze the association between anti-nuclear matrix protein 2 (NXP2) autoantibody and idiopathic inflammatory myopathies (IIMs) and to assess the diagnostic and prognostic relevance of anti-NXP2 autoantibody in patients with IIMs. A systematic search was performed in PubMed, Web of Science, EMBASE, the Cochrane Library, and Scopus to identify studies published as of February 29, 2020. Data was analyzed using Stata 12.0 and Meta-DiSc 1.4. Twenty-eight studies (4764 patients with IIMs and 1981 controls) were included in the meta-analysis. Anti-NXP2 autoantibody showed a significant association with IIMs (odds ratio (OR) = 26.36, 95% confidence interval (CI): 12.05-57.67, P < 0.001), especially juvenile IIMs (OR = 62.48, 95% CI: 16.97-229.98, P < 0.001). The pooled sensitivity, specificity, and area under the curve were 0.19 (95% CI = 0.16-0.21), 1.00 (95% CI = 1.00-1.00), and 0.95 for patients with juvenile IIMs versus controls. Anti-NXP2 autoantibody was associated with an increased risk of developing five characteristics (edema, muscle weakness, myalgia/myodynia, dysphagia, and calcinosis) and reduced risk of interstitial lung disease (ILD) (P < 0.001). Anti-NXP2 autoantibody showed no association with increased risk of death in IIMs (P = 0.463). These findings suggest that anti-NXP2 autoantibody is specially related to IIMs and is related to edema, muscle weakness, myalgia/myodynia, dysphagia, calcinosis, and ILD in patients with IIMs. However, there is no evidence to suggest that the presence of anti-NXP2 autoantibody confers a poor prognosis with respect to overall survival. Key Points • This study summarized the diagnostic and prognostic accuracies of anti-NXP2 autoantibody for patients with IIMs. Anti-NXP2 autoantibody is related to edema, muscle weakness, myalgia/myodynia, dysphagia, calcinosis, and ILD in patients with IIMs.
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Affiliation(s)
- Liubing Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Chenxi Liu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Linlin Cheng
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Songxin Yan
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Haizhen Chen
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
- Department of Medical Laboratory, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Yongzhe Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China.
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Chung MP, Richardson C, Kirakossian D, Orandi AB, Saketkoo LA, Rider LG, Schiffenbauer A, von Mühlen CA, Chung L. Calcinosis Biomarkers in Adult and Juvenile Dermatomyositis. Autoimmun Rev 2020; 19:102533. [PMID: 32234404 PMCID: PMC7225028 DOI: 10.1016/j.autrev.2020.102533] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023]
Abstract
Dermatomyositis (DM) is a rare idiopathic inflammatory myopathy characterized by muscle weakness and cutaneous manifestations in adults and children. Calcinosis, a complication of DM, is the abnormal deposition of insoluble calcium salts in tissues, including skin, subcutaneous tissue, tendons, fascia, and muscle. Calcinosis is more commonly seen in juvenile DM (JDM), but also develops in adult DM. Although the mechanism of calcinosis remains unclear, several pathogenic hypotheses have been proposed, including intracellular accumulation of calcium secondary to an alteration of the cellular membrane by trauma and inflammation, local vascular ischemia, dysregulation of mechanisms controlling the deposition and solubility of calcium and phosphate, and mitochondrial damage of muscle cells. Identifying calcinosis biomarkers is important for early disease detection and risk assessment, and may lead to novel therapeutic targets for the prevention and treatment of DM-associated calcinosis. In this review, we summarize myositis autoantibodies associated with calcinosis in DM, histopathology and chemical composition of calcinosis, genetic and inflammatory markers that have been studied in adult DM and JDM-associated calcinosis, as well as potential novel biomarkers.
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Affiliation(s)
- Melody P Chung
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Carrie Richardson
- Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - David Kirakossian
- Department of Internal Medicine, Kaiser Permanente Santa Clara, Santa Clara, CA, USA
| | - Amir B Orandi
- Division of Pediatric Rheumatology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
| | - Lesley A Saketkoo
- Louisiana State University School of Medicine, Tulane University School of Medicine, New Orleans Scleroderma and Sarcoidosis Patient Care and Research Center, New Orleans, LA, USA
| | - Lisa G Rider
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Adam Schiffenbauer
- Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Carlos A von Mühlen
- Consultant in Rheumatology and Clinical Pathology, San Diego, USA; Brazilian Society of Autoimmunity, Porto Alegre, Brazil
| | - Lorinda Chung
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA; VA Palo Alto Health Care System, Palo Alto, CA, USA.
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Kang EH, Ha YJ, Lee YJ. Autoantibody Biomarkers in Rheumatic Diseases. Int J Mol Sci 2020; 21:ijms21041382. [PMID: 32085664 PMCID: PMC7073052 DOI: 10.3390/ijms21041382] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/04/2020] [Accepted: 02/14/2020] [Indexed: 12/19/2022] Open
Abstract
Autoantibodies encountered in patients with systemic rheumatic diseases bear clinical significance as a biomarker to help or predict diagnosis, clinical phenotypes, prognosis, and treatment decision-making. Furthermore, evidence has accumulated regarding the active involvement of disease-specific or disease-associated autoantibodies in the pathogenic process beyond simple association with the disease, and such knowledge has become essential for us to better understand the clinical value of autoantibodies as a biomarker. This review will focus on the current update on the autoantibodies of four rheumatic diseases (rheumatoid arthritis, myositis, systemic sclerosis, and anti-neutrophil cytoplasmic antibody associated vasculitis) where there has been a tremendous progress in our understanding on their biological effects and clinical use.
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Affiliation(s)
- Eun Ha Kang
- Division of Rheumatology Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (Y.-J.H.); (Y.J.L.)
- Correspondence: ; Tel.: +82-31-787-7048; Fax: +82-31-787-4511
| | - You-Jung Ha
- Division of Rheumatology Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (Y.-J.H.); (Y.J.L.)
| | - Yun Jong Lee
- Division of Rheumatology Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (Y.-J.H.); (Y.J.L.)
- Department of Internal Medicine, Seoul National University, Seoul 03080, Korea
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Eng SWM, Olazagasti JM, Goldenberg A, Crowson CS, Oddis CV, Niewold TB, Yeung RSM, Reed AM. A Clinically and Biologically Based Subclassification of the Idiopathic Inflammatory Myopathies Using Machine Learning. ACR Open Rheumatol 2020; 2:158-166. [PMID: 32039563 PMCID: PMC7077789 DOI: 10.1002/acr2.11115] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 12/10/2019] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE Published predictive models of disease outcomes in idiopathic inflammatory myopathies (IIMs) are sparse and of limited accuracy due to disease heterogeneity. Computational methods may address this heterogeneity by partitioning patients based on clinical and biological phenotype. METHODS To identify new patient groups, we applied similarity network fusion (SNF) to clinical and biological data from 168 patients with myositis (64 adult polymyositis [PM], 65 adult dermatomyositis [DM], and 39 juvenile DM [JDM]) in the Rituximab in Myositis trial. We generated a sparse proof-of-concept bedside classifier using multinomial regression and identified characteristics that distinguished these groups. We conducted χ2 tests to link new patient groups with the myositis subtypes. RESULTS SNF identified five patient groups in the discovery cohort that subdivided the myositis subtypes. The sparse multinomial regressor to predict patient group assignments (areas under the receiver operating characteristic curve = [0.78, 0.97]; areas under the precision-recall curve = [0.55, 0.96]) found that autoantibody enrichment defined four of these groups: anti-Mi-2, anti-signal recognition peptide (SRP), anti-nuclear matrix protein 2 (NXP2), and anti-synthetase (Syn). Depletion of immunoglobulin M (IgM) defined the fifth group. Each group was associated with one subtype, with adult DM being associated with anti-Mi-2 and anti-Syn autoantibodies, JDM being associated with anti-NXP2 autoantibodies, and adult PM being associated with IgM depletion and anti-SRP autoantibodies. These associations enabled us to further resolve the current myositis subtypes. CONCLUSION Using unsupervised machine learning, we identified clinically and biologically homogeneous groups of patients with IIMs, forming the basis of an integrated disease classification based on both clinical and biological phenotype, thus validating other approaches and what has been previously described.
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Affiliation(s)
- Simon W M Eng
- Hospital for Sick Children (SickKids), University of Toronto, Toronto, Ontario, Canada
| | | | - Anna Goldenberg
- Hospital for Sick Children (SickKids), Vector Institute, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | - Rae S M Yeung
- Hospital for Sick Children (SickKids), University of Toronto, Toronto, Ontario, Canada
| | - Ann M Reed
- Duke University School of Medicine, Durham, North Carolina
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Kobayashi I, Akioka S, Kobayashi N, Iwata N, Takezaki S, Nakaseko H, Sato S, Nishida Y, Nozawa T, Yamasaki Y, Yamazaki K, Arai S, Nishino I, Mori M. Clinical practice guidance for juvenile dermatomyositis (JDM) 2018-Update. Mod Rheumatol 2020; 30:411-423. [PMID: 31955618 DOI: 10.1080/14397595.2020.1718866] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Juvenile dermatomyositis is the most common type of juvenile idiopathic inflammatory myopathy mainly affecting the skin and proximal muscles. We have published the Japanese version of 'Clinical practice guidance for juvenile dermatomyositis (JDM) 2018 'consisting of a review of articles in the field and evidence-informed consensus-based experts' opinion on the treatment strategy in collaboration with The Pediatric Rheumatology Association of Japan and The Japan College of Rheumatology under the financial support by 'Research on rare and intractable diseases, Health and Labor Sciences Research Grants'. This article is a digest version of the Japanese guidance.
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Affiliation(s)
- Ichiro Kobayashi
- Center for Pediatric Allergy and Rheumatology, KKR Sapporo Medical Center, Sapporo, Japan
| | - Shinji Akioka
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Norimoto Kobayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Naomi Iwata
- Department of Infection and Immunology, Aichi Children's Health and Medical Center, Obu, Japan
| | | | - Haruna Nakaseko
- Department of Infection and Immunology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Satoshi Sato
- Division of Infectious Disease and Immunology, Saitama Children's Medical Center, Omiya, Japan
| | - Yutaka Nishida
- Department of Pediatrics, School of Medicine, Gunma University, Maebashi, Japan
| | - Tomo Nozawa
- Department of Pediatrics, School of Medicine, Yokohama City University, Yokohama, Japan
| | - Yuichi Yamasaki
- Department of Pediatrics, Kagoshima University Hospital, Kagoshima, Japan
| | - Kazuko Yamazaki
- Department of Pediatrics, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan
| | - Satoru Arai
- Department of Dermatology, St. Luke's International Hospital, Tokyo, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Masaaki Mori
- Lifetime Clinical Immunology, Tokyo Medical and Dental University, Tokyo, Japan
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Wu JQ, Lu MP, Reed AM. Juvenile dermatomyositis: advances in clinical presentation, myositis-specific antibodies and treatment. World J Pediatr 2020; 16:31-43. [PMID: 31556011 DOI: 10.1007/s12519-019-00313-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 08/29/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Juvenile dermatomyositis (JDM) is a chronic autoimmune disease characteristic by inflammation of small vessels within the skin, muscle and vital organs. But the clinical features and treatment of JDM have not been fully clarified. DATA SOURCES Databases underwent through PubMed for articles about the clinical features, myositis-specific antibodies of JDM and its treatment, and we selected publications written in English which were relevant to the topic of this review. RESULTS Clinical features and myositis-specific antibodies may predict the severity and prognosis of disease. Although the mortality rate has been lower with traditional treatments, such as corticosteroid, intravenous immunoglobulin, and disease-modifying anti-rheumatic drugs such as methotrexate, their usages are variable. Novel biological therapies seem to be effective for refractory JDM patients, but more clinical trials are necessary. CONCLUSIONS JDM is a sever disease of childhood. We need to better understand recent advances of JDM in the context of clinical features including skin manifestations, muscle weakness and organ damage, myositis-specific antibodies and their associated outcomes and the treatment of disease.
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Affiliation(s)
- Jian-Qiang Wu
- Department of Rheumatology Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Mei-Ping Lu
- Department of Rheumatology Immunology and Allergy, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Ann M Reed
- Department of Pediatrics, Division of Pediatric Rheumatology, Duke University School of Medicine, Durham, 27710, USA.
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