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DOI: 10.1055/s-0037-1619202
Efficacy of once-daily tiotropium Respimat® in adults with asthma based on GINA steps 2 – 5
Publication History
Publication Date:
21 February 2018 (online)
Introduction:
Tiotropium Respimat® is well tolerated and efficacious as add-on therapy to maintenance low-dose ICS to high-dose ICS/LABA in adults with symptomatic asthma.
Aims:
We examined if these clinical benefits were consistent across groups classified as GINA Steps 2 – 5.
Methods:
Data were from 5 double-blind, placebo-controlled trials (patients 18 – 75 years) of the effect of tiotropium Respimat® on peak (within 3h post-dose FEV1 (0 – 3h)) and trough (pre-dose) FEV1 response vs. placebo. GINA Guidelines Step grouping was based on treatments in: GraziaTinA-asthma® (12wks, tiotropium 2.5 µg, 5 µg or placebo, as 2 puffs QD, added-on to ICS 200 – 400 µg budesonide/equivalent), MezzoTinA-asthma® (2 × 24wk trials, tiotropium, 2.5 µg or 5 µg, as 2 puffs QD, salmeterol 50 µg bid or placebo added-on to ICS 400 – 800 µg budesonide/equivalent) and PrimoTinA-asthma® (2 × 48wk trials, tiotropium 5 µg, as 2 puffs QD or placebo added-on to ICS ≥800 µg budesonide/equivalent + LABA ± additional controller medications).
Results:
Baseline characteristics were balanced across treatment groups in each trial (N> 3400). Tiotropium Respimat® provided improvements in peak and trough FEV1 across GINA Steps 2 – 5 vs. placebo (Table 1); safety profiles were similar between tiotropium and placebo groups.
FEV1 (0 – 3h) peak, adjusted mean change from baseline vs. placebo, mL (95% CI) |
||||
Treatment |
GINA 2 (N = 1085) |
GINA 3 (N = 1334) |
GINA4 (N = 967) |
GINA 5 (N = 80) |
GraziaTinA-asthma* ‡ |
MezzoTinA-asthma* ‡† |
MezzoTinA-asthma* ‡† |
PrimoTinA-asthma |
|
+ MezzoTinA-asthma9* ‡† |
+ PrimoTinA-asthma* ‡† |
|||
(8-week data) |
(24-week data) |
(24-week data) |
(48-week data) |
|
Tio 2.5 µg |
155 (103, 206) |
235 (187, 283) |
181 (35, 326) |
NA |
P< 0.0001 |
P< 0.0001 |
P= 0.0152 |
||
Tio 5 µg |
135 (84, 187) |
187 (139, 235) |
111 (63, 159) |
199 (39, 359) |
P< 0.0001 |
P< 0.0001 |
P< 0.0001 |
P= 0.0151 |
|
FEV1 trough, adjusted mean change from baseline vs. placebo, mL (95% CI) |
||||
Tio 2.5 µg |
116 (63, 170) |
180 (128, 232) |
165 (31, 300) |
NA |
P< 0.0001 |
P< 0.0001 |
P= 0.0163 |
||
Tio 5 µg |
112 (58, 165) |
131 (80, 183) |
91 (47, 136) |
142 (-4, 289) |
P< 0.0001 |
P< 0.0001 |
P< 0.0001 |
P= 0.0571 |
|
‡Patients were symptomatic at screening; †Pooled data. CI = confidence interval; FEV = forced expiratory volume; NA = not applicable; Tio = tiotropium. |
Conclusion:
Addition of tiotropium Respimat® to maintenance therapy in adult asthma patients provides significant and sustained improvements in lung function across GINA Steps 2 – 5.
The study was supported by Boehringer Ingelheim.
Previously submitted to the 27th Int. Cong. of the ERS, 2017