ArticleThe journal of allergy and clinical immunology. Global2025
Subtype prevalence and treatment implication in adolescents and adults with mild-to-moderate asthma: Systematic review and meta-analysis.
Article in The journal of allergy and clinical immunology. Global, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Beyond the Usual Suspects: Unmasking Low-T2 Asthma in Children.Journal of clinical medicine · 2026Review
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8 authors.
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Abstract
Background: Inhaled corticosteroid (ICS)-containing regimens are the mainstay for treating asthma despite usually being ineffective in noneosinophilic asthma (NEA). Data on the prevalence of NEA versus eosinophilic asthma (EA) in mild-to-moderate asthma are limited. Objective: We performed a systematic review of the prevalence of mild-to-moderate asthma in adolescents and adults using sputum inflammatory cell analysis and their responses to ICS. Methods: We searched electronic databases (PubMed, Scopus, EMBASE, Cochrane) for studies in adolescents and adults with mild-to-moderate asthma. The primary outcome was the prevalence of asthma subtypes based on sputum inflammatory cell analysis, categorized into EA and NEA. The secondary outcome involved comparing asthma outcomes between different subtypes after ICS therapy. Certainty of evidence was reported for each pooled analysis. Results: Eighteen studies involving 3,533 adolescents and adults with mild-to-moderate asthma were reviewed. The pooled prevalence (95% confidence interval) of NEA was estimated at 40.39% (27.54, 53.93) in patients with ICS naive with very low certainty of evidence. On reevaluating sputum cytology, the disease of approximately 20% to 30% of patients initially diagnosed as NEA transitioned to the EA subtype. EA patients showed significant improvements in asthma symptoms after ICS therapy: forced expiratory volume in 1 second (standardized mean difference, 0.79; 95% confidence interval, 0.30, 1.27), and airway hyperresponsiveness (standardized mean difference, 1.34; 95% confidence interval, 0.29, 2.40). NEA patients exhibited limited response. Conclusion: A high proportion of adolescents and adults with mild-to-moderate asthma were identified with NEA subtype disease, which exhibited a poor response to ICS. A thorough diagnostic evaluation before initiating treatment should be integrated into clinical practice.Registered in PROSPERO (CRD42023484334).
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