Sanofi, Regeneron shut down Kevzara trial in COVID-19 after finding no benefit for ventilated patients

In the early days of the COVID-19 pandemic, Sanofi and Regeneron launched an ambitious plan to try out rheumatoid arthritis med Kevzara in desperately ill patients. But after early warning signs, a phase 3 flop has forced the drugmakers to can their U.S. trial.