IFIH1 and clinically amyopathic dermatomyositis: Multivariate logistic regression analysis revealed that both MI (OR 5.984, 95% CI 1.174, 30.496, p = 0.031) and RP-ILD (OR 11.875, 95% CI 2.796, 50.411, p = 0.001) were independent risk factors for the death of these anti-MDA5 Ab+ DM/CADM patients (Table 6).