Sanofi SASanofi halts amlitelimab development for atopic dermatitis, will not seek regulatory approvals

Sanofi has decided to discontinue clinical development of amlitelimab for moderate-to-severe atopic dermatitis and will not submit the anti-OX40L monoclonal antibody for global regulatory evaluations. The company determined that the totality of efficacy and safety data does not support further development in this indication, as amlitelimab would not represent a meaningful improvement over standard of care despite long-term response maintenance and an emerging safety profile seen in the Phase 3 ESTUARY extension study. Sanofi will work with investigators and regulators to gradually close ongoing atopic dermatitis studies while ensuring appropriate care transitions for enrolled patients. The company reaffirmed its 2026 financial guidance and noted that a Phase 2 study of amlitelimab in celiac disease remains ongoing with results expected in the second half of 2026.
Sanofi SASanofi halts amlitelimab development for atopic dermatitis, will not seek regulatory approvals
Banco Santander S.A.