Article Text


COPD and drugs: new and old concepts
P256 Aclidinium bromide: a Phase IIb, dose-finding study
  1. D Singh1,
  2. H Magnussen2,
  3. A Kirsten2,
  4. S Mindt-Pruefert3,
  5. C Caracta4,
  6. D Jarreta5,
  7. E Garcia Gil5
  1. 1Medicines Evaluation Unit, University of Manchester, Manchester, UK
  2. 2Pulmonary Research Institute, Hospital Grosshansdorf, Grosshansdorf, Germany
  3. 3Klinische Forschung Hamburg GmbH, Hamburg, Germany
  4. 4Forest Research Institute, New Jersey, USA
  5. 5Almirall S.A., Barcelona, Spain


Introduction and Objectives Aclidinium bromide, a second-generation, long-acting muscarinic antagonist with low systemic activity, is in clinical development for the twice daily maintenance treatment of chronic obstructive pulmonary disease (COPD). This Phase IIb study investigated the dose-response bronchodilation of aclidinium twice daily vs placebo and an active control (formoterol 12 μg twice daily) in patients with moderate to severe COPD.

Methods In this double-blind, double-dummy, cross-over study, 79 patients received 7-day treatments of aclidinium 100 μg, 200 μg and 400 μg, formoterol 12 μg and placebo twice daily over five treatment periods separated by a 7-day washout. The primary endpoint was change from baseline in normalised forced expiratory volume in 1 second (FEV1) area under the curve (AUC)0–12 at Day 7. Other efficacy assessments included change from baseline at Day 7 in normalised FEV1 AUC0–24 and morning pre-dose (trough) and peak FEV1. Adverse events (AEs) were reported throughout the study.

Results Aclidinium provided dose-dependent bronchodilation compared with placebo as assessed by change from baseline in normalised FEV1 AUC0–12 and FEV1 AUC0–24 at Day 7 (Abstract P256 table 1). The bronchodilation provided by aclidinium 400 μg during the first 12 h was comparable to the active control, formoterol 12 μg. Aclidinium improved morning pre-dose trough FEV1 and peak FEV1 after 7 days compared with placebo; the 400 μg dose was most comparable to formoterol 12 μg. Aclidinium was well tolerated; the safety profile of all doses was comparable to that of placebo.

Abstract P256 Table 1

Adjusted mean (SE) change from baseline (L) on Day 7

Conclusion A dose-dependent bronchodilation was observed with aclidinium twice daily. The bronchodilation provided by the highest dose of aclidinium (400 μg) twice daily was comparable to formoterol 12 μg twice daily. The safety profile of aclidinium was similar to placebo, with no dose-dependent AEs observed.

Statistics from


  • Funding This study was supported by Almirall S.A., Barcelona, Spain, and Forest Laboratories, Inc., New York, USA.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.