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Sanofi halts Phase 3 trial of riliprubart for CIDP after efficacy doubts, boosting Argenx's Vyvgart position.

Market News
11 Jun 2026
Vandana Singh
View Source
Neutral
pluang ai news

Sanofi has stopped its Phase 3 MOBILIZE trial testing riliprubart for chronic inflammatory demyelinating polyneuropathy (CIDP) due to unlikely efficacy success, though no safety issues were found. The company will review other riliprubart studies and analyze existing data. Analysts note trial design challenges in CIDP studies and suggest this setback may strengthen Argenx's Vyvgart, which has promising ongoing trials and a strong market launch. Sanofi shares rose slightly following the announcement.

More News (SNY)

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