Earlier in 2019 Sanofi also paid Regeneron $462 million to exit from an immuno-oncology alliance formed in 2015, and in 2017 said they would end discovery research in new antibody drugs.
Sanofi and Regeneron acknowledged that testing their inflammatory disease blockbuster Dupixent in chronic obstructive pulmonary disease (COPD) was likely to be high-risk when they launched phase 3 ...
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