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Condition Guide

New Treatments & Clinical Trials for Myositis

Last updated September 2026Data from ClinicalTrials.gov172 active trials
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Myositis refers to a group of rare autoimmune diseases that cause chronic muscle inflammation and weakness. The most common forms are dermatomyositis, polymyositis, and inclusion body myositis. Treatment typically involves corticosteroids and immunosuppressants, but many people continue to experience weakness, fatigue, and reduced quality of life.

What's actually going on in research

Trials are testing targeted biologics like abatacept and inebilizumab that block specific immune pathways, JAK inhibitors taken as pills, and intravenous immunoglobulin protocols. Researchers are also studying drugs that target the interferon pathway, which appears overactive in dermatomyositis, and testing treatments specifically for inclusion body myositis, which has had no approved therapies.

Biologics for dermatomyositis

Several targeted antibody drugs are showing promise for skin and muscle symptoms in dermatomyositis. These include drugs that block B cells, interferon, and other immune signals.

Inclusion body myositis treatments

This slowly progressive form has had no effective treatments until now. Trials are testing drugs that modify how muscle cells handle abnormal proteins and clear cellular debris.

Biomarker-guided treatment

Different myositis autoantibodies predict different disease patterns and drug responses. Trials are testing whether matching treatment to antibody type improves outcomes.

What to know before you search

Eligibility typically depends on myositis subtype, disease activity level, muscle strength measures, autoantibody status, and which medications you've tried previously.

What types of trials are currently open

  • Biologic drug trialsTesting antibody drugs that target specific immune cells or signaling proteins involved in muscle inflammation.
  • Inclusion body myositis trialsStudies focused specifically on this progressive form, testing drugs that address protein buildup and muscle cell function.
  • Steroid-sparing trialsTesting drugs that might control myositis while allowing people to reduce or stop corticosteroids and avoid their side effects.
  • Immunoglobulin studiesTesting intravenous immunoglobulin, which some people with myositis receive regularly, to establish optimal dosing and identify who benefits most.
  • Observational registriesLong-term studies following people with myositis to understand disease patterns, treatment responses, and outcomes across different subtypes.

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