Regeneron Takes Full Libtayo Rights As March Into Oncology Progresses

The company will pay $900m upfront to buy Sanofi's stake in the PD-1 inhibitor, which is a cornerstone of Regeneron's strategy to build an oncology portfolio.

Girl Alone — Regeneron will go it alone with Libtayo • Source: Shutterstock

Regeneron Pharmaceuticals, Inc. has set a goal to become a leading player in the competitive immuno-oncology space, and has now secured full ownership of a cornerstone asset in that strategy – the PD-1 inhibitor Libtayo (cemiplimab), which had been partnered with Sanofi.

The company announced on 2 June that it has renegotiated its partnership with Sanofi to take the full exclusive global development and commercialization rights to Libtayo in exchange for a $900m upfront payment, plus royalties and milestone payments

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