NLR is the ratio of neutrophils to lymphocytes in peripheral blood, and previous studies had shown that it is associated with an increased risk of death in patients with DM, and elevated serum ferritin levels had also been associated with disease severity and poor prognosis.[19,30] Survival curves had shown that patients who were positive for anti-MDA5 antibodies had a reduced survival time compared to other types of antibodies. This evidence concerns the gene IFIH1 and dermatomyositis.