Secukinumab (Anti‐<scp>IL</scp>‐<scp>17A</scp> Therapeutic Antibody) Improves Clinical Outcome for a Mixed Endotype <scp>CRS</scp>

We identified two CRSwNP patients who had previously failed treatment with an anti-IL-4/IL-13 antibody (dupilumab). Based on their clinical characteristics and blood cytokine levels, we considered them mixed Type II/Type III cases and treated them with an anti-IL-17 antibody (secukinumab). Anti-IL-17 antibody secukinumab was superior in reducing their NPS and SNOT-22 values compared to dupilumab. IL-17 could be a promising target for non-type II and mixed endotype CRS treatment.