Clonality was examined by T-cell receptor variable β-chain (TCR Vβ) analysis with the immunoSEQ assay and compared in IL-17RB+CD4+ and IL-17RB−CD4+ cells sorted from nasal polyp explant cultures of 4 patients with CRSwNP. This evidence concerns the gene IL17RB and chronic rhinosinusitis with nasal polyps.