Recently, a number of myositis-specific and -associated autoantibodies (MSAs/MAAs) have been identified and well characterized, and commercial assays for their detection have become available.<b>Areas covered</b>: There is accumulating evidence showing the utility of MSAs/MAAs in diagnosis of DM and in predicting clinical courses and outcomes in patients with DM as convenient biomarkers, i.e. an association of ILD with anti-ARS, anti-MDA5 and anti-SAE; and malignancy with anti-TIF1-γ, anti-NXP2, and anti-SAE in adults.
Among the MMPs analysed, MMP-7 serum levels in the ARS-ILD group were significantly higher compared with those in any of the other groups of PM/DM patients or in healthy controls.
Propensity score-matched analysis demonstrated that first-line PSL + CNI therapy for patients with ARS-PM/DM-ILD significantly improved the PFS compared with PSL monotherapy, although there was no significant difference regarding longterm survival.
Patients with anti-aminoacyl-tRNA synthetase antibody (ARS-Ab) and anti-melanoma differentiation-associated gene 5 (MDA5)-Ab often have interstitial lung disease (ILD).
Although we reported the clinical characteristics of interstitial lung disease with anti-ARS antibodies (ARS-ILD) with and without PM/DM, the long-term prognosis of ARS-ILD remains undetermined.