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Kaplan-Meier pulmonary outcome curves for interstitial lung disease patients with A, melanoma differentiation–associated gene 5 (MDA-5) positive versus MDA-5 negative, and B, clinically amyopathic dermatomyositis (CADM) versus classic dermatomyositis (DM). Anti–MDA-5 positivity was significantly associated with poor pulmonary outcome. CADM was not predictive of poor pulmonary outcome. NS=not significant.
