 The study suggests that there are changes in the number and composition of regulatory T-cells in patients with sarcoidosis. These changes may indicate a shift in the balance between Th1-like and Th17-like trex, which could lead to an increase in the production of cytokines such as IL-17A and IFN-gamma. This could contribute to the development of chronic inflammation and the pathogenesis of sarcoidosis. This article was authored by Igor Kudriavtsev, Yulia Zinchenko, Anastasia Nova, and others.