000 02798cam a2200301 4500500
005 20250121154512.0
041 _afre
042 _adc
100 1 0 _aLiang, Lin
_eauthor
700 1 0 _a Zhang, Ya-Mei
_eauthor
700 1 0 _a Chen, He
_eauthor
700 1 0 _a Ye, Li-Fang
_eauthor
700 1 0 _a Li, Shan-Shan
_eauthor
700 1 0 _a Lu, Xin
_eauthor
700 1 0 _a Wang, Guo-Chun
_eauthor
700 1 0 _a Peng, Qing-Lin
_eauthor
245 0 0 _aAnti-Mi-2 antibodies characterize a distinct clinical subset of dermatomyositis with favourable prognosis
260 _c2020.
500 _a78
520 _aBackground: Anti-Mi-2 antibody is a type of myositis-specific autoantibody found in idiopathic inflammatory myopathy patients. Objectives: To investigate the clinical features and long-term outcomes in anti-Mi-2-positive dermatomyositis (DM) patients. Materials and Methods: Serum anti-Mi-2β antibodies were detected in 357 DM patients by enzyme-linked immunosorbent assays, and possible associated clinical features were investigated based on cross-sectional and longitudinal studies. Results: Of the DM patients, 40/357 (11.2%) were positive for anti-Mi-2β antibodies and found to have a significantly higher frequency of V sign (72.5% vs 45.7%; p = 0.001), shawl sign (60.0% vs 35.6%; p = 0.003), and muscle weakness (77.5% vs 57.1%; p = 0.013), but a lower incidence of interstitial lung disease (ILD) (37.5% vs 60.9%; p = 0.005) and malignancy (0% vs 12.0%; p = 0.041) than anti-Mi-2β-negative patients. Anti-Mi-2β antibody levels positively correlated with disease activity. After a median follow-up period of 44 months, 97.0% of patients showed clinical remission. Twenty-six anti-Mi-2β-positive patients had a disease course longer than two years, and 16/26 (61.5%) were monocyclic without relapse. Moreover, five patients (15.1%) were drug-free with complete remission for more than three months. Kaplan-Meier survival curves showed that DM patients with positive anti-Mi-2β had a significantly lower mortality rate compared to anti-Mi-2β-negative patients (log-rank; p = 0.035). Interestingly, anti-Mi-2β antibodies did not disappear in all patients over time. Conclusion: Anti-Mi-2β antibodies were associated with a subgroup of DM with a low frequency of ILD and malignancy, good treatment response, and favourable outcome. Moreover, anti-Mi-2β levels correlated with disease activity.
690 _aMi-2
690 _aclinical significance
690 _aoutcome
690 _adermatomyositis
690 _aantibody
786 0 _nEuropean Journal of Dermatology | 30 | 2 | 2020-03-01 | p. 151-158 | 1167-1122
856 4 1 _uhttps://shs.cairn.info/revue-european-journal-of-dermatology-2020-2-page-151?lang=en&redirect-ssocas=7080
999 _c602482
_d602482