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Clinical Trial Summary

The study investigates the effect of 3 days of twice daily treatment of two different doses of RPL554 (a phosphodiesterase [PDE]3/4 inhibitor) or placebo, each administered in addition to once daily tiotropium/olodaterol (Respimat) in patients with moderate to severe chronic obstructive pulmonary disease (COPD). Patients will receive each of the three treatment combinations in a randomized sequence using a crossover design


Clinical Trial Description

RPL554 is a dual inhibitor of phosphodiesterase 3 (PDE3) and phosphodiesterase 4 (PDE4) which are known to have a role in modulating the inflammatory airway response in respiratory diseases, including COPD. PDE3 inhibitors act as bronchodilators whilst PDE4 inhibitors have anti-inflammatory properties and there is also evidence to suggest that combined inhibition of PDE3 and PDE4 can have additive or synergistic anti-inflammatory and bronchodilator. The two doses of RPL554 (1.5 mg and 6 mg)have been selected based on the results from prior studies investigating single and multiple ascending doses in healthy subjects, single doses in asthmatics, single/multiple ascending doses in COPD patients, and 3 days of dosing in COPD patients. These doses were demonstrated to be both effective as a bronchodilator and well tolerated.

The purpose of the study is to investigate if RPL554 has an additive bronchodilator effect when administered in combination with a commonly used anticholinergic/β-agonist combination medication, tiotropium/olodaterol (Respimat), in this patient population measured by the peak forced expiratory volume in one second (FEV1), and forced vital capacity (FVC). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03673670
Study type Interventional
Source Verona Pharma plc
Contact
Status Completed
Phase Phase 2
Start date July 16, 2018
Completion date November 13, 2018

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