CD4 and sarcoidosis: The ratio of Th17/FoxP3+ CD4+ T cells was not significantly different between the groups (P = 0.09, Kruskal-Wallis test), while the ratio of Th1/FoxP3+ CD4+ T cells was higher in sarcoidosis compared to other DPLDs and compared to HC (median (IQR): 21.7 (14.4–35.2) versus 6.2 (2.8–13.5), P = 0.002, and versus 9.5 (8.9–13-6), P = 0.009).