In deviation with MDA5+DM patients, the age and sex adjusted multivariate analyses showed that fever, increased levels of serum ferritin, ALT, or LDH, lymphocytes subpopulations including CD3+T cells, CD3+CD4+ T cells, CD3+CD8+T cells were not risk factors for RP-ILD in ASS patients. This evidence concerns the gene IFIH1 and dermatomyositis.