The clinical efficacy of TRELEGY ELLIPTA has been evaluated in 3 clinical trials: Trial 1 (NCT #01957163), Trial 2 (NCT #02119286), and Trial 3 (NCT #02164513).
Trials 1 and 2 were multicenter, randomized, double-blind, parallel-group, 12-week treatment trials. Across both trials, a total of 412 subjects received coadministration of umeclidinium 62.5 mcg + fluticasone furoate/vilanterol 100 mcg/25 mcg, the components of TRELEGY ELLIPTA. Comparative in vitro data provide support for reliance on coadministration studies with umeclidinium 62.5 mcg + fluticasone furoate/vilanterol 100 mcg/25 mcg [see Description (11)].
The population demographics for Trials 1 and 2 were: mean age of 64 years, 92% white, 66% male, and an average smoking history of 48 pack-years, with 50% identified as current smokers. At screening, the mean postbronchodilator percent predicted FEV1 was 46% (range: 14% to 76%), the mean postbronchodilator FEV1/FVC ratio was 0.48 (range: 0.21 to 0.70), and the mean percent reversibility was 13% (range: -24% to 86%).
Trial 3 was a randomized, multicenter, double-blind, parallel-group, 52-week treatment trial comparing the clinical efficacy of TRELEGY ELLIPTA with the fixed-dose combinations of fluticasone furoate/vilanterol 100 mcg/25 mcg and umeclidinium/vilanterol 62.5 mcg/25 mcg. A total of 10,355 subjects with COPD with a history of 1 or more moderate or severe exacerbations in the prior 12 months were randomized (2:2:1) to receive TRELEGY ELLIPTA, fluticasone furoate/vilanterol, or umeclidinium/vilanterol administered once daily.
The population demographics across all treatments were: mean age of 65 years, 77% white, 66% male, and an average smoking history of 46.6 pack-years, with 35% identified as current smokers. At study entry, the most common COPD medications were ICS + anticholinergic + LABA (34%), ICS + LABA (26%), anticholinergic + LABA (8%), and anticholinergic (7%); the mean postbronchodilator percent predicted FEV1 was 46% (SD: 15%), the mean postbronchodilator FEV1/FVC ratio was 0.47 (SD: 0.12), and the mean percent reversibility was 10% (range: -59% to 125%).
Lung Function: In Trials 1 and 2, the primary endpoint was change from baseline in trough (predose) FEV1 at Day 85 (defined as the mean of the FEV1 values obtained at 23 and 24 hours after the previous dose on Day 84). For both trials, umeclidinium + fluticasone furoate/vilanterol demonstrated a statistically significant increase relative to placebo + fluticasone furoate/vilanterol (Table 2); similar results were demonstrated for the secondary endpoint of the weighted mean FEV1 (0 to 6 hours postdose) on Day 84 (Table 2).
Table 2. Least Squares (LS) Mean Change from Baseline in Trough FEV1 and Weighted Mean FEV1 (0-6 h) at Week 12 (Days 84/85)Treatment | n | Trough FEV1 (mL)a | Weighted Mean FEV1 (0-6 h) (mL)b |
Difference from Placebo + FF/VIc (95% CI) | Difference from Placebo + FF/VIc (95% CI) |
Trial 1 | | | |
| 206 | 124 (93, 154) | 153 (118, 187) |
Trial 2 | | | |
| 206 | 122 (91, 152) | 147 (114, 179) |
FEV1 = Forced Expiratory Volume in 1 Second; FF/VI = Fluticasone Furoate/Vilanterol 100 mcg/25 mcg; UMEC = Umeclidinium 62.5 mcg.
a At Day 85.
b At Day 84.
c For Placebo + FF/VI: Trial 1, n = 206; Trial 2, n = 206.
Greater LS mean changes from baseline in FEV1 over time were demonstrated for the umeclidinium + fluticasone furoate/vilanterol treatment group compared with the placebo + fluticasone furoate/vilanterol treatment group starting at 15 minutes postdose on Day 1. For Trial 1, LS mean changes in FEV1 over time relative to baseline are displayed for Day 1 and Day 84 in Figures 4 and 5, respectively. Similar results were seen in Trial 2.
Figure 4. Least Squares (LS) Mean Change from Baseline in Postdose Serial FEV1 (mL) on Day 1
Trelegy Fig 4 (Trelegy Ellipta Spl Graphic 07)
Figure 5. Least Squares (LS) Mean Change from Baseline in Postdose Serial FEV1 (mL) on Day 84
Trelegy Fig 5 (Trelegy Ellipta Spl Graphic 08)
In Trial 3, treatment with TRELEGY ELLIPTA demonstrated a statistically significant improvement in lung function (mean change from baseline trough FEV1 at Week 52) compared with fluticasone furoate/vilanterol and umeclidinium/vilanterol. The mean change from baseline in trough (predose) FEV1 at Week 52 was 97 mL for TRELEGY ELLIPTA compared with fluticasone furoate/vilanterol (95% CI: 85, 109; P<0.001) and 54 mL for TRELEGY ELLIPTA compared with umeclidinium/vilanterol (95% CI: 39, 69; P<0.001). The effects on lung function (mean change from baseline trough FEV1) of TRELEGY ELLIPTA compared with fluticasone furoate/vilanterol and umeclidinium/vilanterol were observed at all timepoints over the course of the 52-week study (Figure 6).
Figure 6. Least Squares (LS) Mean Change from Baseline in Trough FEV1 (mL)
Figure 6. Least Squares (ls) Mean Change From Baseline In Trough Fev1 (ml) (Trelegy Ellipta Spl Graphic 09)
Exacerbations: In Trial 3, the primary endpoint was annual rate of on-treatment moderate and severe exacerbations in subjects treated with TRELEGY ELLIPTA compared with fluticasone furoate/vilanterol and umeclidinium/vilanterol. Exacerbations were defined as worsening of 2 or more major symptoms (dyspnea, sputum volume, and sputum purulence) or worsening of any 1 major symptom together with any 1 of the following minor symptoms: sore throat, colds (nasal discharge and/or nasal congestion), fever without other cause, and increased cough or wheeze for at least 2 consecutive days. Exacerbations were considered to be moderate severity if treatment with systemic corticosteroids and/or antibiotics was required and were considered to be severe if resulted in hospitalization or death.
Treatment with TRELEGY ELLIPTA statistically significantly reduced the on-treatment annual rate of moderate/severe exacerbations by 15% compared with fluticasone furoate/vilanterol and by 25% compared with umeclidinium/vilanterol ().
Table 3. Moderate and Severe Chronic Obstructive Pulmonary Disease ExacerbationsTreatment | n | Mean Annual Rate (exacerbations/year) | Rate Ratio vs. Comparator (95% CI) | % Reduction in Exacerbation Rate (95% CI) | P Value |
TRELEGY ELLIPTA | 4,145 | 0.91 | | | |
FF/VI | 4,133 | 1.07 | 0.85 (0.80, 0.90) | 15 (10, 20) | P<0.001 |
UMEC/VI | 2,069 | 1.21 | 0.75 (0.70, 0.81) | 25 (19, 30) | P<0.001 |
FF/VI = Fluticasone Furoate/Vilanterol 100 mcg/25 mcg; UMEC/VI = Umeclidinium/Vilanterol 62.5 mcg/25 mcg.
Treatment with TRELEGY ELLIPTA statistically significantly decreased the risk of a moderate/severe exacerbation as measured by time to first exacerbation when compared with fluticasone furoate/vilanterol (14.8%; 95% CI: 9.3, 19.9; P<0.001) and umeclidinium/vilanterol (16.0%; 95% CI: 9.4, 22.1; P<0.001).
Treatment with TRELEGY ELLIPTA reduced the on-treatment annual rate of severe exacerbations (i.e., requiring hospitalization or resulting in death) by 13% compared with fluticasone furoate/vilanterol (95% CI: -1, 24; P = 0.064) which was not statistically significant. Treatment with TRELEGY ELLIPTA statistically significantly reduced the on-treatment annual rate of severe exacerbations by 34% compared with umeclidinium/vilanterol (95% CI: 22, 44; P<0.001).
Health-Related Quality of Life: In all 3 trials, health-related quality of life was assessed using the St. George’s Respiratory Questionnaire for COPD patients (SGRQ-C), a disease-specific shorter version derived from the original St. George’s Respiratory Questionnaire (SGRQ). Results were transformed to the SGRQ for reporting purposes. In Trial 1, the on‑treatment responder rate at Week 12 (response defined as a decrease in score from baseline of 4 or more) was 40% for umeclidinium + fluticasone furoate/vilanterol vs. 35% for placebo + fluticasone furoate/vilanterol (odds ratio 1.2; 95% CI: 0.8, 1.8). In Trial 2, the on‑treatment responder rate at Week 12 was 35% for umeclidinium + fluticasone furoate/vilanterol vs. 21% for placebo + fluticasone furoate/vilanterol (odds ratio 2.0; 95% CI: 1.3, 3.1). In Trial 3, the on-treatment responder rate at Week 52 was statistically significantly greater for subjects treated with TRELEGY ELLIPTA (42%) compared with fluticasone furoate/vilanterol (34%; odds ratio 1.41; 95% CI: 1.29, 1.55; P<0.001) and compared with umeclidinium/vilanterol (34%; odds ratio 1.41; 95% CI: 1.26, 1.57; P<0.001).
Other Endpoints: In Trials 1 and 2, subjects treated with umeclidinium + fluticasone furoate/vilanterol on average used less rescue medication compared with subjects treated with placebo + fluticasone furoate/vilanterol over Weeks 1 to 12. In Trial 3, subjects treated with TRELEGY ELLIPTA on average used less rescue medication (mean number of uses per day and percentage of rescue-free 24-hour periods) compared with subjects treated with fluticasone furoate/vilanterol or umeclidinium/vilanterol over the course of the 52-week study.