Fig. 3

Levels of polymorphonuclear (PMN) elastase-to-neutrophil ratio (ENR) in patients with myositis and correlation of ENR with disease activity. ENR showed no difference in patients with idiopathic inflammatory myopathies (IIMs), dermatomyositis (DM), and polymyositis (PM) when compared with HCs (a). ENR was significantly higher in patients with IIMs, DM, and PM with active disease [A] than those in remission [R] (b). ENR showed moderately positive correlations with myositis disease activity assessment (MYOACT) in patients with IIMs, DM, and PM (c). Statistical significance is indicated by asterisks (**P < 0.01, ***P < 0.001)