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Efficacy and safety evaluation of once-daily fluticasone furoate/vilanterol in Asian patients with asthma uncontrolled on a low- to mid-strength inhaled corticosteroid or low-dose inhaled corticosteroid/long-acting beta2-agonist

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Background:

Response to inhaled corticosteroid (ICS)/long-acting beta2-agonist (LABA) combinations varies across ethnic groups.

Objective:

To investigate the efficacy and safety of the ICS/LABA combination fluticasone furoate/vilanterol (FF/VI) 100/25 μg in Asian patients with asthma.

Methods:

A randomized (1:1), 12-week, double-blind, placebo-controlled, parallel group, multicenter phase III study of once-daily FF/VI 100/25 μg versus placebo in patients of Asian ancestry ages ≥12 years with asthma, uncontrolled on a low- to mid-strength ICS or low-dose ICS/LABA. The primary end point was the mean change from baseline in the daily evening peak expiratory flow. Secondary end points were the mean change from baseline in percentage rescue-free 24-hour periods, daily morning peak expiratory flow, percentage symptom-free 24-hour periods, Asthma Quality of Life Questionnaire score, adverse events, and severe exacerbations.

Results:

The intent-to-treat population was 307 patients. There were significant (p < 0.001) improvements from baseline for FF/VI 100/25 μg versus placebo in evening peak expiratory flow (51.0 L/min [95% confidence interval {CI}, 42.2‐59.7 L/min]) and all secondary end points (percentage rescue-free 24-hour periods 21.8% [95% CI, 14.6‐29.1%]; morning peak expiratory flow 52.9 L/min [95% CI, 44.2‐61.6 L/min]; percentage symptom-free 24-hour periods 15.8% [95% CI, 9.4‐22.3%]; Asthma Quality of Life Questionnaire score 0.52 [95% CI, 0.28, 0.75]). On-treatment adverse events were 35% with FF/VI (n = 2 [serious]), 31% with placebo; severe exacerbations were FF/VI (n = 1), placebo (n = 7).

Conclusions:

In patients of Asian ancestry, once-daily FF/VI 100/25 μg produced statistically and clinically significant improvements in efficacy end points versus placebo, with a generally similar safety profile. Results were consistent with a global phase III study of FF/VI 100/25 μg. Clinicaltrials.gov NCT01498679.
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Keywords: Asian; asthma; efficacy; inhaled corticosteroid; long-acting beta-agonist; once-daily; phase III; placebo-control; randomized; safety

Document Type: Research Article

Affiliations: Department of Respiratory Diseases, China-Japan Friendship Hospital, Beijing, China

Publication date: July 1, 2016

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  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

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    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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