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Published in: Neurological Sciences 7/2021

01-07-2021 | Polymyositis | Original Article

The significance of myositis autoantibodies in idiopathic inflammatory myopathy concomitant with interstitial lung disease

Authors: Hung-Ling Huang, Wen-Chih Lin, Po-Yu Lin, Meng-Yu Weng, Yuan-Ting Sun

Published in: Neurological Sciences | Issue 7/2021

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Abstract

Aim

This study identified factors associated with interstitial lung disease (ILD) in patients with idiopathic inflammatory myopathy (IIM) based on the latest classification and recent advances in autoantibody serology.

Methods

We retrospectively analyzed data of 173 patients who underwent complete myositis autoantibody serology examination in a medical center in Taiwan from July 2018 to February 2020. After exclusion of patients who did not receive a final diagnosis of IIM, clinical features, serology data, concomitant diseases, treatment, presence of respiratory failure, and mortality rate of the remaining 97 patients were analyzed.

Results

Of IIM patients in our cohort, 47.4% had ILD. ILD was significantly associated with subtypes of IIM, older age of onset, presence of mechanic’s hand, and presence of anti-Jo-1 and anti-Ro52 antibodies. Among five IIM subtypes, overlap myositis (OM) and dermatomyositis (DM) were significantly associated with a higher prevalence rate of ILD (67.5% in OM and 53.3% in DM). Among patients with OM, the presence of anti-Jo-1 (100%), anti-PL-7 (100%), and anti-EJ antibodies (77.8%) was most significantly associated with ILD.

Conclusion

The latest classification of IIM, older age of onset, presence of mechanic’s hand, and presence of anti-Jo-1 and anti-Ro52 antibodies were significantly associated with ILD. Among five IIM subtypes, OM and DM had higher prevalence rate of ILD. Among OM patients, the presence of anti-Jo-1, anti-EJ, and anti-PL-7 antibodies was significantly associated with ILD. The study results may help physicians to timely screen and monitor pulmonary function in high-risk groups.
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Metadata
Title
The significance of myositis autoantibodies in idiopathic inflammatory myopathy concomitant with interstitial lung disease
Authors
Hung-Ling Huang
Wen-Chih Lin
Po-Yu Lin
Meng-Yu Weng
Yuan-Ting Sun
Publication date
01-07-2021
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 7/2021
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-020-04911-7

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