Zhi Tong Cai Jing·2025-09-04 09:23Core Viewpoint - Sanofi's experimental drug for atopic dermatitis, amlitelimab, has underperformed in late-stage trials, disappointing investors and leading to a pre-market stock drop of up to 9.3% [1]. Group 1: Drug Performance and Market Impact - Amlitelimab showed improvement in skin clearance and disease severity compared to placebo, but the efficacy was still lower than Sanofi's best-selling drug, Dupixent [1]. - The stock has declined by 18% over the past 12 months, reflecting investor concerns about the drug's potential [1]. - Analysts believe the results of the amlitelimab trial are crucial for Sanofi, especially given the uncertain future of another key drug, itepekimab [1]. Group 2: Future Prospects and Comparisons - Sanofi is seeking alternatives to Dupixent, which is projected to generate over €21 billion annually at peak sales [3]. - Amlitelimab is expected to generate approximately €1.5 billion (around $1.75 billion) in annual revenue by 2031 [3]. - Amlitelimab has a dosing advantage, requiring administration only once every three months compared to Dupixent's more frequent dosing schedule [3]. Group 3: Other Drug Developments - The efficacy results of itepekimab have been mixed in recent late-stage trials, as it is being tested for chronic obstructive pulmonary disease in former smokers [4].