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Yamaguchi K, Yamaguchi A, Onuki Y, Itai M, Kashiwagi C, Takehara K, Aoki S, Kanaya A, Taguchi K, Umetsu K, Oshima K, Uchida M, Kimura H, Kasahara M, Takemura M, Hara K, Sekiguchi A, Motegi SI, Muro Y, Nakasatomi M, Motohashi R, Sakairi T, Nakagawa J, Hiromura K, Obokata M, Kurabayashi M, Maeno T. Clinical features of dermatomyositis associated with anti-MDA5 antibodies by age. Mod Rheumatol 2020; 31:177-185. [PMID: 32149542 DOI: 10.1080/14397595.2020.1740400] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Anti-melanoma differentiation-associated gene 5 (MDA5) autoantibody-positive and age at onset ≥60 years are poor prognosis factors in polymyositis (PM) and dermatomyositis (DM) associated with interstitial lung disease (ILD) among Japanese patients. However, the influence of age on the clinical features of anti-MDA5 autoantibody-positive patients with DM remains unclear. METHODS We retrospectively examined 40 patients with DM and anti-MDA5 autoantibodies according to age. We compared patients aged <60 and ≥60 years with respect to clinical features including laboratory test findings, high-resolution lung computed tomography data, treatment content, and complications such as infections and prognosis. We also examined clinical features between surviving and deceased patients in the older patient group. RESULTS Of 40 enrolled patients, 13 were classified as old and 27 as young. Older patients had significantly fewer clinical symptoms including arthralgia/arthritis (p < .01), skin ulceration (p = .02), and higher mortality than younger patients (p = .02) complicated with rapidly progressive ILD (RP-ILD), combination immunosuppressive therapy, and strictly controlled infections. CONCLUSION Clinical features and mortality of anti-MDA5 autoantibody-positive DM patients were influenced by age. Patients aged ≥60 years had a worse prognosis, and combination immunosuppressive therapy was often ineffective for RP-ILD in older patients.
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Affiliation(s)
- Koichi Yamaguchi
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Aya Yamaguchi
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yuji Onuki
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Miki Itai
- Department of Respiratory Medicine, Fujioka General Hospital, Fujioka, Japan
| | - Chiharu Kashiwagi
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Kazutaka Takehara
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Shuhei Aoki
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Azusa Kanaya
- Division of Rheumatology and Nephrology, Japanese Red Cross Maebashi Hospital, Maebashi, Japan
| | - Kohei Taguchi
- Department of Respiratory Medicine, Fujioka General Hospital, Fujioka, Japan
| | - Kazue Umetsu
- Department of Respiratory Medicine, Fujioka General Hospital, Fujioka, Japan
| | - Kazuma Oshima
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Megumi Uchida
- Department of Respiratory Medicine, Fujioka General Hospital, Fujioka, Japan
| | - Hayato Kimura
- Division of Rheumatology and Nephrology, Japanese Red Cross Maebashi Hospital, Maebashi, Japan
| | - Morimitsu Kasahara
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Masao Takemura
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Kenichiro Hara
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Akiko Sekiguchi
- Department of Dermatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Sei-Ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yoshinao Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masao Nakasatomi
- Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Rena Motohashi
- Division of Rheumatology and Nephrology, Japanese Red Cross Maebashi Hospital, Maebashi, Japan
| | - Toru Sakairi
- Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Junichi Nakagawa
- Department of Respiratory Medicine, Fujioka General Hospital, Fujioka, Japan
| | - Keiju Hiromura
- Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Masaru Obokata
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Toshitaka Maeno
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
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