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Cancarini P, Nozawa T, Whitney K, Bell-Peter A, Marcuz JA, Taddio A, Guo J, Dover S, Feldman BM. The clinical features of juvenile dermatomyositis: A single-centre inception cohort. Semin Arthritis Rheum 2022; 57:152104. [PMID: 36183479 DOI: 10.1016/j.semarthrit.2022.152104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 08/30/2022] [Accepted: 09/21/2022] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Juvenile Dermatomyositis (JDM), a severe and rare autoimmune disease, is the most common idiopathic inflammatory myopathy in children. We describe the clinical features of a large single-centre cohort. METHODS We studied an inception cohort (0-18 years old) referred for diagnosis to the JDM clinic at The Hospital for Sick Children (SickKids), between January 1989 and September 2017. Probable or definite diagnosis of JDM was done according to the 2017 ACR/EULAR Criteria. We excluded children who had treatment started at another hospital. The data were collected retrospectively from clinical charts and the SickKids JDM database. RESULTS 172/230 (74.8%) patients were included. They were most often female (female:male = 1.8:1); the age at diagnosis was 8.5±4.3 years. There was a positive family history for autoimmune disease in 52%, mainly rheumatoid arthritis. No patient died. The most common signs at inception were muscle weakness (85.5%), nailfold capillary abnormalities (83.4%), Gottron papules (78.5%), heliotrope rash (66.3%), abnormal gait (55.8%), and malar/facial rash (54.7%). The prevalence of Gottron papules, heliotrope rash, facial/malar rash, nailfold capillary abnormalities, Raynaud phenomenon, dysphonia/dysphagia (a frequent cause of hospitalization), mouth ulcers, calcinosis, eye problems, joint involvement, acanthosis nigricans and lipodystrophy increased during follow-up. Muscle enzymes, namely CK, ALT, AST, were often normal or only slightly raised despite active muscle disease; conversely LD was often high. Anti-Nuclear Autoantibodies were positive in 49.7% of patients at diagnosis. The course of the disease was: 29.1% monocyclic, 5.3% polycyclic, 33.1% chronic. The course of 56 patients (32.5%) was not classifiable due to length of follow-up. Corticosteroids were used as treatment in almost all our patients and 30% required intravenous therapy due to the severity of the presentation; methotrexate was added in 64%, more often in recent years. Unresponsive patients were treated mostly with intravenous immunoglobulins (IVIG). CONCLUSIONS The information obtained from this relatively large number of patients adds to the growing knowledge base of this rare disease. TRIAL REGISTRATION SickKids Research Ethics Board approved the study.
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Affiliation(s)
- Paola Cancarini
- Operative Unit of Pediatrics, ASST del Garda, Desenzano del Garda (BS), Italy
| | - Tomo Nozawa
- Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan; Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Kristi Whitney
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Rehabilitation, The Hospital for Sick Children, Toronto, Canada
| | - Audrey Bell-Peter
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Jo-Anne Marcuz
- Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Rehabilitation, The Hospital for Sick Children, Toronto, Canada
| | - Andrea Taddio
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo" and University of Trieste, Trieste, Italy
| | - Jessica Guo
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada
| | - Saunya Dover
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada
| | - Brian M Feldman
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Canada; Division of Rheumatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada; Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Health Policy, Management & Evaluation, The Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
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Cancarini P, Cattalini M, Bosio I, Marchini M, Vitari S, Meini A. PReS-FINAL-2269: Incidence of antiphospholipid antibody syndrome in a cohort of children suffering from either arterial or venous thrombosis. Pediatr Rheumatol Online J 2013. [PMCID: PMC4045376 DOI: 10.1186/1546-0096-11-s2-p259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Cattalini M, Bosio I, Meini A, Cancarini P, Berlucchi M, Savoldi G. PReS-FINAL-2230: A prospective evaluation of a cohort of patients with PFAPA syndrome. Pediatr Rheumatol Online J 2013. [PMCID: PMC4042901 DOI: 10.1186/1546-0096-11-s2-p220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bosio I, Meini A, Cancarini P, Berlucchi M, Savoldi G, Cattalini M. OR6-003 – Prospective evaluation of PFAPA patients. Pediatr Rheumatol Online J 2013. [PMCID: PMC3952119 DOI: 10.1186/1546-0096-11-s1-a98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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