ArticleRespiratory research2025
Asthma remission and its predictors in severe asthma: real-world study from the Korean severe asthma registry.
Article in Respiratory research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundRemission has emerged as a therapeutic goal in asthma, but most studies in severe asthma have focused on biologic-treated patients in controlled settings. Real-world data from Asian populations are scarce. We aimed to evaluate the achievement and predictors of asthma remission in Korean patients with severe asthma using a nationwide prospective cohort.
methodsWe analyzed 405 patients with severe asthma from the Korean Severe Asthma Registry (KoSAR) who completed 12-month follow-up. Remission was classified at 12 and 24 months as complete clinical remission (CCR; ACT ≥ 20, no exacerbations, no oral corticosteroid [OCS] use, and FEV₁ ≥80% or improvement ≥ 100 mL), clinical remission (CR; first three criteria), partial remission (PR; ≥1 criterion), and no remission (NR; none). Ordinal logistic regression identified baseline predictors of higher remission.
resultsAt 12 months, CCR, CR, PR, and NR were achieved in 5.9%, 18.3%, 67.9%, and 7.9% of participants. Among those with 24-month follow-up (n = 139), remission status was largely stable. Higher baseline ACT score (OR: 1.19, 95% CI 1.12-1.27) predicted remission, while maintenance OCS use (OR: 0.11, 95% CI 0.05-0.25) and chronic cough (OR: 0.39, 95% CI 0.17-0.89) were negatively associated. Remission groups had better baseline lung function, fewer exacerbations, and low WBC counts. Baseline biologic use was more common in CCR, CR groups, whereas NR patients more frequently received methylxanthines, macrolides, and OCS.
conclusionsClinical predictors, including asthma control, OCS use, and chronic cough may help guide remission-focused strategies in the treatment of severe asthma.
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