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  • Title: A randomised trial of fluticasone furoate/vilanterol (50/25 μg; 100/25 μg) on lung function in COPD.
    Author: Kerwin EM, Scott-Wilson C, Sanford L, Rennard S, Agusti A, Barnes N, Crim C.
    Journal: Respir Med; 2013 Apr; 107(4):560-9. PubMed ID: 23352226.
    Abstract:
    BACKGROUND: Fluticasone furoate (FF)/vilanterol (VI) is a novel once-daily inhaled corticosteroid/long-acting β2-agonist combination therapy for COPD. We aimed to assess the efficacy and safety of two strengths of FF/VI (100/25 μg; 50/25 μg) vs. individual components (FF 100 μg, VI 25 μg) and placebo over 24 weeks. METHODS: Multicentre, randomised, placebo-controlled, double-blind, parallel-group study of patients (N = 1030) with moderate-to-severe COPD. All medication was administered once daily in the morning. Co-primary efficacy endpoints were: (1) weighted mean (wm) FEV1 (0-4 h post-dose on day 168) to assess acute lung function effects; and (2) trough FEV1 (23-24 h post-dose on day 169) to assess long-lasting effects. Symptom-related outcomes were analysed and adverse events (AEs) assessed. RESULTS: Main findings were: (1) the combination of FF/VI at a strength of 100/25 μg significantly (p < 0.001) improved wm FEV1 (173 ml) and trough FEV1 (115 ml) vs. placebo. Similar effects were observed with FF/VI 50/25 μg; (2) no significant difference was seen between FF/VI 100/25 μg and VI 25 μg for trough FEV1 (48 ml, p = 0.082), while an effect was observed between FF/VI 100/25 μg and FF 100 μg for wm FEV1 (120 ml, p < 0.001); (3) VI 25 μg over 24 weeks improved lung function vs. placebo significantly for wm FEV1 (103 ml, p < 0.001) and trough FEV1 (67 ml, p = 0.017); and (4) no safety signal was observed. CONCLUSIONS: In subjects with moderate-to-severe COPD, FF/VI 100/25 μg provides rapid and significant sustained bronchodilation at 24 weeks. Lung function is improved to a similar extent with FF/VI 50/25 μg and to a somewhat lesser extent with VI 25 μg. All treatments were well tolerated. GSK study number: HZC112206. ClinicalTrials.gov: NCT01053988.
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