Chest
Volume 145, Issue 5, May 2014, Pages 981-991
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Original Research
Once-Daily Umeclidinium/Vilanterol 125/25 μg Therapy in COPD: A Randomized, Controlled Study

https://doi.org/10.1378/chest.13-1579Get rights and content

Background

Combination long-acting bronchodilator therapy may be more effective than long-acting bronchodilator monotherapy in COPD. Our objectives were to compare the efficacy and safety of once-daily umeclidinium bromide (UMEC)/vilanterol (VI) 125/25 μg with placebo and UMEC or VI monotherapy in COPD.

Methods

This was a double-blind, placebo-controlled, parallel-group study. A total of 1,493 patients were randomized (3:3:3:2) to 24 weeks of treatment with UMEC/VI 125/25 μg, UMEC 125 μg, VI 25 μg, or placebo once daily via dry powder inhaler.

Results

Primary efficacy end point was trough FEV1 on day 169 (23-24 h postdose). Additional lung-function, symptomatic, and health-related quality-of-life end points were also assessed. Safety evaluations included adverse events, vital signs, ECG, and clinical laboratory measurements. All active treatments significantly improved trough FEV1 vs placebo (0.124-0.238 L, all P < .001). Improvements with UMEC/VI 125/25 μg were significantly greater than for UMEC 125 μg or VI 25 μg (0.079 L and 0.114 L, both P ≤ .001). Improvements for UMEC/VI 125/25 μg vs placebo were observed for the Transition Dyspnea Index (1.0 unit, P < .001), rescue albuterol use at weeks 1 to 24 (−1.5 puffs/d), and St. George's Respiratory Questionnaire (−3.60 units, P < .001). No safety signals were observed.

Conclusions

Once-daily UMEC/VI 125/25 μg was well tolerated and provided greater improvements in lung function, health status, and dyspnea scores compared with monotherapy components and placebo over 24 weeks. This study supports the use of UMEC/VI 125/25 μg for the maintenance treatment of COPD.

Trial registry

ClinicalTrials.gov; No.: NCT01313637; URL: www.clinicaltrials.gov.

Section snippets

Study Design, Treatments, and Assessments

This was a 24-week, multicenter, randomized, placebo-controlled, parallel-group study in patients with COPD conducted in 153 centers in 14 countries from March 22, 2011, to April 19, 2012. Patients were randomized 3:2 to active treatments and placebo to provide additional safety data for the active treatment arms. Patients were assigned to receive one of four double-blind treatments: UMEC/VI 125/25 μg (delivering 113/22 μg, respectively), UMEC 125 μg (delivering 113 μg), VI 25 μg (delivering 22

Patients

Of the 2,114 patients enrolled in the study, 1,489 were included in the intent-to-treat population (Fig 1). The majority of patients completed the study (74% to 81% active treatment groups; 67% placebo). Patient disposition and reasons for discontinuation are shown in Figure 1. Across the groups, 54% to 58% of patients reported having a cardiovascular-related current medical condition, and 44% to 50% of patients used inhaled corticosteroids. Patient demographics and baseline characteristics

Discussion

This long-term study of patients with moderate to severe COPD treated with the once-daily combination bronchodilator UMEC/VI 125/25 μg revealed three important findings. First, UMEC/VI 125/25 μg provides significant improvements in measures of lung function compared with placebo, UMEC 125 μg, and VI 25 μg throughout the 24-week treatment period. Second, the improvement in lung function is associated with improvements in patient-reported dyspnea and HRQoL health status compared with placebo.

Conclusions

In summary, the combination therapy UMEC 125/25 μg was well tolerated in patients with moderate to severe COPD and produced improvements in lung function, dyspnea, and HRQoL compared with placebo, UMEC 125 μg, and VI 25 μg over 24 weeks of treatment. Both UMEC 125 μg and VI 25 μg were shown to be efficacious compared with placebo. The clinical benefits over monotherapy components, together with the convenience of a once-daily dosing regimen, support the use of UMEC/VI 125/25 μg as a long-term

Acknowledgments

Author contributions: As guarantor of this manuscript, Dr Celli had full access to all of the data in this study and takes complete responsibility for the integrity of the data and the accuracy of the data analysis.

Dr Celli: contributed to the design of the study, analysis of the data, and preparation of the manuscript; reviewed the manuscript and provided final approval of the submitted version; and agreed to be listed as an author.

Dr Crater: contributed to the study design and conduct,

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    Dr Crater is currently at Clinical Development, Aerocrine (Morrisville, NC).

    Funding/Support: GlaxoSmithKline funded the design/concept/conduct of the study and manuscript development.

    Reproduction of this article is prohibited without written permission from the American College of Chest Physicians. See online for more details.

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