AUTHOR=Foti Randazzese Simone , Lugarà Cecilia , Galletta Francesca , Pioggia Giovanni , Crisafulli Giuseppe , Caminiti Lucia , Gangemi Sebastiano , Ruggeri Paolo , Manti Sara 

TITLE=Efficacy of omalizumab after discontinuation: a retrospective single-center observational study in children with severe asthma

JOURNAL=Frontiers in Allergy

VOLUME=Volume 6 - 2025

YEAR=2025

URL=https://www.frontiersin.org/journals/allergy/articles/10.3389/falgy.2025.1529624

DOI=10.3389/falgy.2025.1529624

ISSN=2673-6101

ABSTRACT=IntroductionSeveral trials documented safety and efficacy of omalizumab, but there are a few data about its effects after discontinuation. This study aims to evaluate the maintenance of efficacy of omalizumab in pediatric asthmatic patients one year after its suspension.MethodsA retrospective analysis was conducted on 17 subjects aged 6–18 years, divided into two groups: Group A (9 patients) who discontinued omalizumab after 18 months, and Group B (8 patients) who continued the therapy. Data on respiratory function (FEV1%), the number of exacerbations, need for hospitalizations, use of oral corticosteroids, and Asthma Control Test (ACT) scores were collected and analyzed at three time points: baseline (T0), after 18 months of treatment (T1), and 36 months (T2).ResultsIn Group A, significant differences were observed between T0 and T1, and T1 and T2, in FEV1% values, the number of exacerbations, the need for oral corticosteroids, and ACT scores. Group B showed significant differences in these parameters over time, with a notable reduction in exacerbations and improvement in ACT scores. The comparative analysis revealed that Group B had a higher number of exacerbations compared to Group A at T0 and greater use of oral cortico-steroids at T1. By T2, Group A had a higher ACT score than Group B at T0, whereas Group B showed higher ACT scores at T2 compared to Group A.DiscussionThe study confirmed the efficacy and safety of omalizumab, with its benefits persisting one year after treatment discontinuation in terms of lung function, reduction in exacerbations, decreased need for oral corticosteroids, and improved quality of life. Further research is necessary.