Real-Life Response to Biologics in Severe Asthma with Nasal Polyposis: Insights from the Belgian Severe Asthma Registry

Background Nasal polyposis (NP) is a comorbidity of type 2 severe asthma (SA) which could influence response to SA biologics. Methods We evaluated (super-) response in SA patients with (NP +) and without NP (NP−) enrolled in the Belgian Severe Asthma Registry (BSAR). Results 914 patients, of whom 31% NP + , were included. At enrollment, NP + patients had higher annual exacerbation rates, higher number of emergency room visits and more elevated type 2 biomarkers. In the longitudinal subanalysis of 104 patients, both groups had significant and similar asthma responses to asthma biologics, except for a greater increase in FEV 1 in the NP + group. Super-response was achieved in 33 patients (32%), irrespective of NP status or type of biologic. Conclusion In conclusion, both NP + and NP − patients had positive treatment responses, with some able to achieve super-response. In SA patients with NP, a greater FEV 1 improvement as compared to SA patients without NP was observed.