This is a parallel, Phase 2b/Phase 3, 3-arm study to investigate the efficacy, safety, and tolerability of subcutaneous (SC) treatment with lunsekimig compared with placebo in adult participants (aged 40 to 80 years, inclusive) with inadequately controlled Chronic obstructive pulmonary disease (COPD) characterized by an eosinophilic phenotype.
Participation to the study consists of 3 periods:
* Screening period of up to 4 weeks * Randomized intervention period of approximately 48 weeks * Follow-up period: Approximately 8 weeks The study duration will be up to 60 weeks.
Between 40 to 80 years of age
Physician diagnosed chronic obstructive pulmonary disease (COPD) ≥1 year
Post-bronchodilator forced expiratory volume in 1 second (post-BD FEV1) ≥ 20% and ≤ 70% of predicted value and FEV1/FVC (forced expiratory volume in 1 second /forced vital capacity) <0.70
Former or current smokers ≥10 pack-years
Asthma, including pediatric asthma, or asthma-COPD overlap syndrome (ACOS)
Significant pulmonary disease other than COPD
Long-term oxygen therapy >4.0 L/min or requirement of >2.0 L/min to maintain oxygen saturation >88% at rest
Unstable disorder that can impact participants safety or study outcomes