UAB - Center for Clinical and Translational Science

• Participant must be 18 to 85 years of age inclusive. - Clinical history consistent with NCFB (cough, chronic sputum production and/or recurrent respiratory infections). - Participants with a FEV1 % predicted ≥30%. - Participants with at least 2 moderate or 1 severe Pulmonary exacerbations (PEs) in the past 12 months.

Participants are excluded from the study if any of the following criteria apply: - Have bronchiectasis due to CF, hypogammaglobulinemia, common variable immunodeficiency, known active nontuberculous mycobacteria (NTM) lung infection, or pulmonary fibrosis. - Known or suspected immunodeficiency disorder. - Pulmonary exacerbation which has not resolved clinically during screening period. - Have significant haemoptysis. - Have any clinically significant abnormal laboratory values at Screening or diseases or disorders. - History of lung transplantation. - History of malignancy within 5 years before Screening, or during the screening period - Currently being treated with antimicrobial therapy for tuberculosis (TB). - Currently on active treatment for allergic bronchopulmonary aspergillosis (ABPA). - Participants with active autoimmune disease or participants using immunosuppressive therapy for autoimmune disease - Known allergy to itepekimab or to excipients - Live-attenuated vaccine(s) within 4 weeks prior to Screening or plans to receive such vaccines during the study - Unstable ischemic heart disease - Cardiomyopathy or other relevant cardiovascular disorder - Clinically significant new abnormal electrocardiogram (ECG) within 6 months prior to, or at Screening - History of human immunodeficiency virus (HIV) infection or positive HIV 1/2 serology at Screening. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.