- Study to Assess the Safety, Tolerability and Pharmacokinetic Profile of PBF-680 After Multiple Oral Doses"
- "First-in-human" Study To Assess the Safety and Tolerability of PBF-680 in Male Healthy Volunteers
- Study to Investigate the Effect of PBF-680 on Forced Expiratory Volume in 1 Second (FEV1) in Asthmatic Patients
- Therapeutic Effect of PBF-680 in Patients With COPD
- Study to Assess the Efficacy of a Single PBF-680 Oral Administration to Attenuate Adenosine 5'-Monophosphate Challenge-induced Airway Hyperresponsiveness in Mild-to-moderate Asthmatics
- A Study to Assess the Efficacy of a 5-day, 10- mg PBF-680 Oral Administration on Late Asthmatic Responses (LAR) in Mild to Moderate Asthmatic Patients.