Figure 1(a) showed that serum IL-13 level was significantly higher in patients with ENKTL than that in rhinitis group. ABCC4 expression level was influentially increased in ENKTL tissues compared with rhinitis tissues (Figure 1(b)). Moreover, results from western blot analysis revealed that there was also a marked rise in level of ABCC4 in ENKTL YTS cells than that in normal NK cells (Figure 2(a)). Here, ABCC4 is linked to rhinitis.