While the expression levels of IL-5, -13, -17 and TNF-α in the eosinophil-dominant CRSwNP group and in the plasma cell-dominant CRSwNP group were significantly greater than those in the control group (both p < 0.001; data not shown), there were no significant differences between these expression levels in the eosinophil-dominant CRSwNP and plasma cell-dominant CRSwNP groups (Table 2). Here, IL5 is linked to chronic rhinosinusitis with nasal polyps.