Newsletter
Published: 11 Sep 2025, 18:07 IST

Sanofi stock drop over 10% after Amlitelimab Phase III results raises concerns about future pipeline and Dupixent patent expiration.
• Sanofi shares fall over 10%
• Amlitelimab Phase III trial results raise pipeline concerns.
• Dupixent patent expiration adds to investor worries.

Sanofi shares experience a significant drop of over 10% following the release of Amlitelimab’s Phase III trial results. The results have raised concerns about the company’s future pipeline, particularly in light of the upcoming expiration of Dupixent’s patent. Read more about the trial results.

Why it matters

The decline in Sanofi’s stock highlights investor concerns regarding the company’s ability to sustain its pipeline. Amlitelimab was expected to be a key player in Sanofi’s portfolio, and its underwhelming Phase III results have cast doubt on its potential. Moreover, with Dupixent’s patent expiration on the horizon, Sanofi faces increased pressure to deliver new successful therapies to maintain its market position.

What’s next

Sanofi will need to address these challenges by potentially accelerating other pipeline projects or seeking strategic partnerships. Investors will be closely monitoring Sanofi’s next steps to gauge the company’s ability to navigate these hurdles. For further insights into Sanofi’s strategic direction, visit our insights section.