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  • Title: Efficacy, safety, and tolerability of lebrikizumab in adolescent patients with uncontrolled asthma (ACOUSTICS).
    Author: Szefler SJ, Roberts G, Rubin AS, Zielen S, Kuna P, Alpan O, Anzures-Cabrera J, Chen Q, Holweg CTJ, Kaminski J, Putnam WS, Matthews JG, Kamath N.
    Journal: Clin Transl Allergy; 2022 Jul; 12(7):e12176. PubMed ID: 35846226.
    Abstract:
    BACKGROUND: Lebrikizumab is a monoclonal antibody that modulates activity of interleukin-13. The Phase 3 ACOUSTICS study assessed lebrikizumab efficacy and safety in adolescents with uncontrolled asthma despite standard-of-care treatment. METHODS: Adolescents (aged 12-17 years) with uncontrolled asthma, prebronchodilator forced expiratory volume in 1 s 40%-90% predicted, and stable background therapy were randomised 1:1:1 to receive lebrikizumab 125 or 37.5 mg or placebo subcutaneously once every 4 weeks. Primary efficacy endpoint was asthma exacerbation rate over 52 weeks. RESULTS: Between August 2013 and July 2016, 579 patients were screened and 346 were randomised; 224 (65%) completed the study with 52 weeks of treatment. Lebrikizumab 125 mg (n = 116) reduced the exacerbation rate at 52 weeks versus placebo (n = 117; adjusted rate ratio [RR] 0.49 [95% CI 0.28-0.83]; 51% rate reduction). Lebrikizumab 37.5 mg (n = 113) was less effective at reducing exacerbations (RR 0.60 [95% CI 0.35-1.03]; 40% rate reduction). In patients with blood eosinophil counts ≥300 cells/μl, both lebrikizumab doses reduced exacerbations (125 mg: RR 0.44 [95% CI 0.21-0.89]; 37.5 mg: 0.42 [95% CI 0.19-0.93]). Treatment-emergent adverse events, serious adverse events, and adverse events leading to study discontinuation occurred in 155 (68%), 7 (3%), and 5 (2%) of 229 patients who received lebrikizumab (both 125 and 37.5 mg doses) and in 72 (62%), 4 (3%), and 1 (1%) of 117 who received placebo, respectively. No deaths occurred. CONCLUSION: Lebrikizumab 125 mg reduced asthma exacerbation rates in adolescents with uncontrolled asthma. However, the study was prematurely terminated (sponsor's decision) potentially limiting interpretation of results. CLINICAL TRIAL REGISTRATION: NCT01875003 (www.ClinicalTrials.gov).
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