Myositis Specific Antibodies (MSAs): What Families Need to Know

Myositis-specific antibodies (MSAs) are associated with certain symptoms in JM patients. In some cases, knowing the MSA of a patient may help clinicians look out for certain symptoms and guide treatment decisions. Dr. Jessica Neely explains these associations, why they are important, and the limitations in our understanding of the role of MSAs in JM.

Doctor and young juvenile myositis patient.

What is Juvenile Myositis?

Juvenile myositis, including juvenile dermatomyositis and juvenile polymyositis, is a group of rare and life-threatening autoimmune diseases, in which the body’s immune system attacks its own cells and tissues.

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