Assessment of Efficacy and Safety of Lipid-Lowering Treatment and Its Importance in Risk Assessment and Prevention in a Hungarian Myositis Cohort.

Background: Idiopathic inflammatory myopathies (IIMs), also known as myositis, are systemic autoimmune diseases characterized by chronic inflammation affecting the skin, muscles, and internal organs. Besides traditional risk factors and immune-mediated myocarditis, continuous activity of the immune system increases cardiovascular disease (CVD) risk, meaning that cardiovascular events are the leading causes of mortality in IIM patients. Statins are the most widely used lipid-lowering therapies, which reduce cardiovascular risk, but the fear of adverse muscular events inhibits the frequency of use. Methods: Our aim was to assess the CVD risk in a myositis cohort using the SCORE2 prediction system, carotid artery Doppler ultrasound measurement, and biomarkers; recommend individual lipid-lowering treatment; and follow the efficacy and adverse events of therapy in a 6-month treatment period. Results: The study population (80 IIM patients) was a middle-aged, female-dominant myositis cohort with an average disease duration of 9 years and low median global disease activity. Based on the SCORE2 evaluation, 78.8% of patients had medium/high CVD risk, while 73.13% had asymptomatic carotid plaque. After 6 months of adequate lipid-lowering therapy, 37.5% of patients reached a lower CVD risk category, the biomarker levels of atherosclerosis significantly decreased, and no progression in carotid plaques was detected. None of the patients reported an adverse muscular event or IIM relapse. Conclusions: Our findings proved that the CVD risk of patients with myositis is high, but carefully applied lipid-lowering treatment is the key to effective risk reduction. Risk stratification and the recommendation of preventive treatment are the responsibility of the treating physician.