Abstract
Background The association between sarcoidosis and autoimmunity has been reported for years. However, the significance of autoantibodies in the pathophysiology and clinical management of sarcoidosis is not well understood. No autoantibodies that can be used as serologic biomarkers to diagnose the disease, monitor the state of the disease, and predict the prognosis of patients are established. Methods We performed a comprehensive analysis of serum autoantibodies and analyzed their associations with clinical features of sarcoidosis. Results Patients with systemic autoimmune rheumatic diseases-associated autoantibodies had a higher prevalence of advanced radiographic stage and consolidations in high-resolution computed tomography than patients without autoantibodies (p < .05). Age, sex, clinical history, pulmonary function tests, serum angiotensin-converting enzyme levels, rheumatoid factor, and the number of involved organs were not significantly different between the two groups. Conclusions There may be an association between autoantibodies and more advanced pulmonary lesions in patients with sarcoidosis. Further investigations are needed to establish the significance of autoantibodies.
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