CXCR3− CCR6− Tfh2 and CXCR3− CCR6+ Tfh17 cells increased, while CXCR3+ CCR6− Tfh1 and CXCR3+ CCR6+ CCR4− Tfh17.1-like cells decreased in sarcoidosis patients [75]. The gene discussed is CCR6; the disease is sarcoidosis.