By creating a registry, physicians will have the opportunity to understand the clinical
outcomes of Myositis patients treated with Acthar. Despite the availability of clinical
exams, muscle biopsies, and other testing, it is surmised that there may be a more important
classification of myositis that physicians are not diagnosing which could possibly lead to
improper treatment due to inaccurate diagnosis. There may be several types of immune and
inflammatory myositis (IIM) that do not fit well into the typical sub classifications of
myositis.