The percentages of BAFF-R + CD19 + CD24-CD38hi B cells were significantly decreased in IgG4-RD compared with pSS patients (23.29 ± 20.83%, 34.91 ± 19.65%, respectively; P = 0.045), and were comparable to HC (32.31 ± 14.26%; P = 0.097; Figure 2F). This evidence concerns the gene TNFRSF13C and peeling skin syndrome.