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Sanofi ends Phase 3 riliprubart trial after weak interim results

  • An ​independent data monitoring committee found no ‌safety ⁠issues related to the drug during the interim analysi
Published June 10, 2026 Updated June 10, 2026 12:09pm
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Biopharmaceutical company Sanofi will stop a Phase ​3 trial of its drug ‌riliprubart for a rare neurological condition after an interim ​analysis of the ​study found it unlikely to ⁠provide sufficient efficacy.

In the ​MOBILIZE study, the drug was ​being tested for chronic inflammatory demyelinating polyneuropathy in patients whose ​condition resisted standard treatments.

An ​independent data monitoring committee found no ‌safety ⁠issues related to the drug during the interim analysis

Sanofi will evaluate the ​continuation of ​other ⁠ongoing riliprubart studies, including the Phase 3 ​VITALIZE trial. The company ​said ⁠the termination would not incur significant financial costs ⁠or ​change its 2026 ​financial guidance