A Bronchoprovocation Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of CSJ117 in Adult Subjects With Mild Atopic Asthma

A Randomized, Subject- and Investigator-blinded, Placebo-controlled, Paralleldesign, Bronchoprovocation Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Multiple Doses of Inhaled CSJ117 in Adult Subjects With Mild Atopic Asthma

This is a non-confirmatory, randomized, subject and investigator blinded, placebo-controlled, parallel-design, multi-center bronchoprovocation study. Approximately 55 subjects with mild stable atopic asthma who exhibit an EAR and LAR to a common inhaled allergen will receive multiple once daily doses of inhaled CSJ117 or placebo over 12 weeks. Two sequential dose cohorts are planned for this study, Cohort 1 and Cohort 2. Cohort 2 will be split into two parts, Cohort 2a and 2b

Inclusion Criteria:

• Diagnosis of stable mild atopic asthma, as defined by the American Thoracic Society/ European Respiratory Society statement, who exhibit an early and late asthmatic response to a common inhaled allergen during the screening allergen inhalation challenge.
• Throughout the screening period and at baseline, only infrequent use of inhaled short-acting beta2-agonists (less than or equal to twice weekly) to treat asthma and/or prophylactic use prior to exercise. Inhaled short-acting beta2-agonist must be withheld for 8 hours before spirometry.

Exclusion Criteria:

• Hospitalization or emergency room treatment for acute asthma in the 6 months prior to screening or during the screening period.
• Any worsening or exacerbation of asthma (e.g., an event requiring a change in treatment) in the six weeks before screening or during the screening period.
• A history of any clinically significant chronic pulmonary disease other than mild atopic asthma, including but not limited to COPD, interstitial lung disease or bronchiectasis
• Use of immunosuppressive medications or allergen-specific immunotherapy within 6 months prior to screening.