Canada First To OK Sanofi/Regeneron’s Sarilumab, But Struggle To Differentiate Looms

Sanofi/Regeneron’s Kevzara (sarilumab) has won its first worldwide approval for treating moderately to severely active rheumatoid arthritis from Health Canada. But as more regulators follow, the companies will face a battle to differentiate the drug from chief rival, Roche/Chugai’s Actemra (tocilizumab).