Clinical spectrum time course in non-Asian patients positive for anti-MDA5 antibodies
OBJECTIVES: To define the clinical spectrum time-course and prognosis of non-Asian patients positive for anti-MDA5 antibodies.METHODS: We conducted a multicentre, international, retrospective cohort study.RESULTS: 149 anti-MDA5 positive patients (median onset age 53 years, median disease duration 18 months), mainly females (100, 67%), were included. Dermatomyositis (64, 43%) and amyopathic dermato
