Furthermore, we found that Treg cells had a ‘proinflammatory’ phenotype, since CXCR3-expressing Treg cell subsets, including CCR6-CXCR3+ Th1-like and CCR6 + CXCR3+ Th17.1-like Treg cells, were elevated in peripheral blood samples from patients with sarcoidosis compared to healthy controls [76]. This evidence concerns the gene CCR6 and sarcoidosis.