Itepekimab Met Primary Endpoint in One of Two Chronic Obstructive Pulmonary Disease (COPD) Phase 3 Trials

Core Insights - The AERIFY-1 trial demonstrated a statistically significant reduction of 27% in moderate or severe exacerbations in former smokers with COPD compared to placebo at week 52, indicating a clinically meaningful benefit [1][2] - The AERIFY-2 trial did not meet its primary endpoint, although some benefits were observed earlier in the trial [1][3] - Itepekimab was generally well tolerated across both trials, with safety profiles consistent with previous clinical studies [1][5] Trial Details - AERIFY-1 involved 375 patients receiving itepekimab every two weeks, 377 every four weeks, and 375 receiving placebo, while AERIFY-2 included 326 patients every two weeks, 303 every four weeks, and 324 receiving placebo [2][10] - The primary endpoint for both trials was the reduction in the annualized rate of acute moderate or severe COPD exacerbations [12] Efficacy Results - In AERIFY-1, the reduction in exacerbations was 30% at week 24 and 27% at week 52 for the every-two-week group, and 34% at week 24 and 21% at week 52 for the every-four-week group [3] - In AERIFY-2, the reductions were 18% at week 24 and only 2% at week 52 for the every-two-week group, and 21% at week 24 and 12% at week 52 for the every-four-week group [3] Safety Profile - Adverse events (AEs) were comparable between treatment and placebo groups, with AEs reported at 67% and 68% for the every-two-week and every-four-week groups in AERIFY-1, respectively, compared to 68% for placebo [5] - Serious infections occurred in 7% of patients in both itepekimab arms in AERIFY-1, compared to 10% for placebo [5] Future Directions - Regeneron and Sanofi are reviewing the trial data and will discuss next steps with regulatory authorities [1][7] - Itepekimab is also being evaluated in other clinical trials for conditions such as chronic rhinosinusitis and non-cystic fibrosis bronchiectasis [8][15]