Purified CD127− ILC2s from nasal polyps, obtained from CRSwNP patients with a blood eosinophil count of >250 cells/μl, showed an enhanced response to cytokine stimulation by producing higher amounts of type 2 cytokines compared with CD127+ ILC2s (Fig. 1 G). This evidence concerns the gene IL7R and chronic rhinosinusitis with nasal polyps.