On the other hand, among Tfh cells, SLAMF7+ cells were almost exclusively confined to cTfh1 subsets as compared with cTfh2 and cTfh17 subsets in IgG4-RD patients (Fig. 2b: 14.8 ± 5.75% vs 1.38 ± 1.30% vs 1.68 ± 1.47%, p < 0.001). The gene discussed is SLAMF7; the disease is immunoglobulin G4-related sclerosing disease.