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Claire Hopkins,1 Kathleen M Buchheit,2 Enrico Heffler,3,4 Noam A Cohen,5 Heidi Olze,6 Asif H Khan,7 Jérôme Msihid,8 Shahid Siddiqui,9 Scott Nash,9 Juby A Jacob-Nara,10 Paul J Rowe,10 Yamo Deniz9 1Department of Otorhinolaryngology – Head and Neck Surgery, Guy’s and St Thomas’ NHS Foundation Trust, London, UK; 2Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Boston, MA, USA; 3Personalized Medicine, Asthma & Allergy – Humanitas Clinical and Research Center IRCCS, Milan, Italy; 4Department of Biomedical Sciences, Humanitas University, Milan, Italy; 5Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA; 6Department of Otorhinolaryngology, Head and Neck Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany; 7Global Medical Affairs, Sanofi, Chilly-Mazarin, France; 8Health Economics and Value Assessment, Sanofi, Chilly-Mazarin, France; 9Medical Affairs, Regeneron Pharmaceuticals, Inc., Tarrytown, NY, USA; 10Global Medical Affairs, Sanofi, Bridgewater, NJ, USACorrespondence: Claire Hopkins, Department of Otorhinolaryngology – Head and Neck Surgery, Guy’s and St Thomas’ NHS Foundation Trust, Great Maze Pond, London, SE1 9RT, UK, Tel +44 2071882215, Email clairehopkins@yahoo.comAbstract: Patients with asthma frequently have comorbid chronic rhinosinusitis (CRS) with or without nasal polyps, increasing disease burden and complicating treatment. These post hoc analyses investigated disease-specific health-related quality of life (HRQoL) and general health status in the randomized, placebo-controlled QUEST study (NCT02414854) in patients treated with dupilumab for moderate-to-severe asthma with comorbid CRS. Patients received 300 mg of dupilumab or placebo every 2 weeks for 52 weeks. CRS HRQoL was assessed by the 22-item Sino-Nasal Outcome Test (SNOT-22; items scored 0– 5). The 22 items are categorized into 5 domains (nasal, ear/facial, sleep, function, and emotion), and patients report the top 5 most important items affecting their health. General health status was assessed by Euro-QoL visual analog scale (EQ-VAS). Of 1902 patients, 382 (20.1%) self-reported comorbid CRS; 193 patients receiving dupilumab 300 mg q2w or matched placebo were included in this analysis. At baseline, the most impacted SNOT-22 domain was nasal, and general health status was below population norms. Patients rated “decreased sense of taste/smell,” “nasal blockage,” “cough,” “reduced productivity,” and “wake up tired” as the 5 most important SNOT-22 items affecting their health. Percentage change from baseline in SNOT-22 total score was significantly greater for dupilumab vs placebo at Weeks 24, 36, and 52 (all p < 0.05). Improvements from baseline were significantly greater for dupilumab vs placebo at Week 52 for all SNOT-22 domains (p < 0.05), except emotion. At Week 52, significant changes from baseline with dupilumab vs placebo were observed for all 5 most important SNOT-22 items affecting their health (all p < 0.05). EQ-VAS was significantly improved with dupilumab vs placebo by Week 12, with improvements sustained to Week 52 (all p < 0.01). In patients with moderate-to-severe asthma who self-reported comorbid CRS, dupilumab treatment vs placebo improved CRS-specific HRQoL and general health status.Keywords: asthma, chronic rhinosinusitis, nasal polyps, dupilumab, health-related quality of life, SNOT-22