Coexistence of anti-MDA5 and anti-PL-7 in a patient with dermatomyositis: a case report

Anti-melanoma differentiation-associated gene 5 (anti-MDA5) and anti-threonyl-tRNA synthetase (anti-PL-7) are myositis-specific autoantibodies, associated with rapidly progressive interstitial lung disease (RP-ILD). A 41-year-old woman presented productive cough, dyspnea, and muscle pain. Anti-MDA5 and anti-PL-7 were double-positive. The patient was diagnosed with dermatomyositis-associated ILD, and responded successfully to glucocorticoids and immunosuppressants.