REGN sarilumab/Kezvara is not Covid19. The Regeneron phase 3 trial which was just cancelled for efficacy is a repurposed arthritis drug. The big news on Regeneron is a dual-antibody cocktail where both antibodies are specifically designed for the covid19 spike protein. It was the dual antibody cocktail that drew the $400 million manufacturing commitment from the US government. I don't know the name of the two covid19-spike-protein antibodies. I thought that the initial human trials on Regeneron's covid19-spike-protein antibodies would not read out for a month, but I am not sure.

Does anyone know the names of the two Regeneron covid19-spike-protein antibodies in the Regeneron cocktail?