Meanwhile, Th17 cells, a newer aspect in sarcoidosis pathophysiology, produce IL-17, contributing to the induction and maintenance of the disease process (Berge et al., 2012) by producing cytokines such as IL-17, IL-17F, IL-22, IL-26, IFN-gamma, and CCL20 (Boniface et al., 2008). This evidence concerns the gene IL17A and sarcoidosis.