Neurológia pre prax 6/2020

Idiopathic inflammatory myopathies – new advances

Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of diseases affecting striated muscle and several other organs. Significant numbers of patients have autoantibodies in serum that are specific for myositis subtypes and associate with disease course and prognosis. New classification criteria for IIM use weighted assessment of disease related parameters and allow calculation of percentage disease probability. Lately, new criteria for dermatomyositis subtypes have been proposed based largely on the detection of myositis specific autoantibodies. New criteria for clinical response to treatment have been developed in 2017. These criteria are more sensitive and allow better quantification of improvement. Positive effect of Janus kinase inhibitors was recently reported in dermatomyositis.

Keywords: myositis, inflammatory myopathy, autoantibodies, classification, treatment