TNFSF13B and chronic rhinosinusitis without nasal polyps: As displayed in Figure 1, the serum BAFF concentrations were 1166.7 ± 433.3 pg/mL in the CRSwNP group, which were markedly higher than those in the CRSsNP group (890.8 ± 292.4 pg/mL, P < 0.005) and the HC group (799.1 ± 313.0 pg/ml, P < 0.05), but no statistic difference was seen between the CRSsNP and HC groups (P < 0.05).