This study is about testing if a new treatment called efgartigimod PH20 SC works and is safe for adults with a group of muscle diseases called Idiopathic Inflammatory Myopathy (IIM). IIM includes types like dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM), and some types of polymyositis (PM). The study compares the new treatment to a placebo, which is a harmless substance with no treatment effect, and measures how well it works using a Total Improvement Score (TIS).
Key Points:
- Duration and Visits: Participants will need to visit the study site regularly for check-ups.
- Eligibility: You should have specific types of IIM and be taking approved background treatments.
- Risks and Benefits: The study will check for any side effects and how well the treatment works.
To join, you must be able to give consent, have a confirmed diagnosis of IIM, and not have any other serious health issues that could affect the study. You also must not be pregnant and should not have participated in a similar study before. For more details, visit https://myositis-study.com/.