Study to Assess the Efficacy and Safety of CJM112 in Patients With Inadequately Controlled Severe Asthma

A Randomized, Subject- and Investigator-blinded, Placebo Controlled, Multi-center, Multiple Dose Study to Assess the Efficacy and Safety of CJM112 in Patients With Inadequately Controlled Moderate to Severe Asthma

An unmet medical need exists for patients with moderate and severe asthma who continue to demonstrate symptoms despite being on standard of care medications, and are not eligible for other biologic therapies developed or in development for T2-high(allergic/eosinophilic) asthma. The purpose of this study was to determine if CJM112, an anti-IL-17A antibody, displayed the clinical efficacy and safety profile to support further development in patients with inadequately controlled moderate to severe asthma with low IgE and low circulating eosinophil levels.

After an initial screening visit, run-in period and baseline assessments, the eligible subjects entered the treatment period and were randomized in a 3:2 ratio to one of the two treatment groups:

• 300 mg CJM112 s.c. injection received once per week for the first 4 weeks, followed by once every two weeks up to Week 12 (Day 85) + standard of care treatment.
• Matching placebo + standard of care treatment. After completion of the last dose on Day 85 of treatment period, subjects returned for the final efficacy assessment on Day 92. Following the treatment period, all subjects entered a 13-week safety follow-up period, including the End of Study (EoS) visit on Day 176.

Inclusion Criteria:

1. Patients with a physician-diagnosed history of moderate to severe asthma for a period of at least one year prior to screening.
2. Patients on a stable therapy regimen of asthma for at least 3 months prior to screening with at least medium dose inhaled glucocorticoid and at least one additional asthma controller medication (such as inhaled long-acting bronchodilator, leukotriene antagonist, theophylline, stable low dose glucocorticoid, etc).
3. Acceptable and reproducible spirometry with FEV1 ≥ 40 and ≤ 90% of predicted at screening and baseline (re-testing is allowed once).
4. ACQ score ≥ 1.5 at screening and baseline (re-testing is allowed once).
5. Total serum IgE < 150 IU/mL
6. Peripheral blood eosinophils <300/μL

Exclusion Criteria:

1. Previous use of biologics or other concomitant medications within the time periods specified in the SOM/protocol.
2. History of ongoing, chronic, or recurrent moderate or severe infectious disease.
3. Patients who have smoked or inhaled nicotine or tobacco products within the 6 month period prior to Visit 1 or who have a smoking history of greater than 10 pack years.
4. Patients who have had an asthma attack/exacerbation requiring systemic corticosteroids for at least 3 continuous days within 4 weeks prior to screening.
5. Patients who have had a respiratory tract infection or asthma worsening within 4 weeks prior to Visit 1 or during the screening period.
6. Women of child-bearing potential unless they use highly effective methods of contraception during dosing and for 13 weeks after stopping of investigational drug.