At the time of serum sampling, among myositis patients positive for anti-Jo1 and anti-MDA5 antibodies, 13 patients were treated with glucocorticoids, one patient received immunomodulatory treatment, 16 patients received both glucocorticoids and immunomodulatory treatment, and 38 antibody-positive patients were not treated with any specific medication; we were not aware whether the remaining 12 patients received any specific medication. This evidence concerns the gene IFIH1 and myositis disease.