Treatment of Severe Uncontrolled Chronic Rhinosinusitis with Nasal Polyposis (CRSwNP) with Mepolizumab or Dupilumab: A Preliminary Single-Center Study for Evaluation of Safety and Efficacy

Mepolizumab and Dupilumab are both effective and safe in improving sinonasal symptoms and quality of life in severe uncontrolled CRSwNP. While improvements in NPS, SNOT-22, and ACT scores were comparable, Mepolizumab achieved a significant reduction in eosinophil counts, whereas Dupilumab was associated with faster clinical improvement but a transient eosinophilia. These findings suggest that biologic choice may be guided by individual patient profiles and inflammatory patterns.