To compare the clinical impact of Acthar Gel at the cellular and molecular level before and after treatment and compare it to patients with inactive disease. The cohort of active myositis subjects are not actually enrolled in this study, but rather the data for those with active myositis will be obtained from a previously completed trial entitled Efficacy and safety of Adenocorticotropic Hormone Gel in Refractory dermatomyositis and polymyositis.
Comparing the clinical effects of Acthar Gel before and after treatment and compare it to patients with inactive disease.