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Background  Inadequate efficacy of current intranasal steroids in chronic rhinosinusitis (CRS) is attributable to ineffective and/or inconsistent drug delivery to target anatomic sites. A new exhalation delivery system with fluticasone (EDS‐FLU) may improve outcomes by significantly increasing superior/posterior corticosteroid delivery. A study was conducted to assess the long‐term efficacy and safety outcomes of EDS‐FLU in individuals with CRS.    Methods  This was a 12‐month, multicenter, single‐arm study evaluating the safety and efficacy of EDS‐FLU 372 μg twice daily in CRS patients (with [n = 34] or without [n = 189] nasal polyps [NP]). Efficacy assessments by serial nasal endoscopy and patient report included: 22‐item Sino‐Nasal Outcome Test (SNOT‐22), NP grade, standardized surgical indicator assessment, Lund‐Kennedy score, and Patient Global Impression of Change. Adverse event (AE) evaluations included nasal endoscopy. Additional safety and efficacy outcomes were assessed.    Results  Of 223 patients who received EDS‐FLU, 96% reported prior corticosteroid use and 29% prior sinus surgery. The EDS‐FLU AE profile was similar to conventional intranasal steroids studied in similar populations. Most patients (87%) reported symptom improvement. Through 12 months, mean SNOT‐22 scores improved by −21.5 and −21.1 for CRS with and without NP, respectively. Among patients with NP, 54.2% had polyp elimination in at least 1 nostril and 83.3% had ≥1‐point improvement in polyp grade.    Conclusion  Over 1 year of treatment in CRS with and without NP, EDS‐FLU 372 μg twice daily was well tolerated and produced improvements across a broad range of objective and subjective measures. EDS‐FLU may be a desirable new option for patients with this condition.

EXHANCE‐12: 1‐year study of the exhalation delivery system with fluticasone (EDS‐FLU) in chronic rhinosinusitis