Anifrolumab: First Approval.

Anifrolumab (anifrolumab-fnia; Saphnelo^™) is a monoclonal antibody antagonist of the type 1 interferon receptor (IFNAR). It is being developed by AstraZeneca (under license from Medarex, now Bristol-Myers Squibb) for the treatment of autoimmune disorders, including systemic lupus erythematosus (SLE) and lupus nephritis, the underlying pathogenesis of which involves type 1 interferon. In July 2021, intravenous anifrolumab was approved in the USA for the treatment of adult patients with moderate to severe SLE who are receiving standard therapy. Anifrolumab (intravenous or subcutaneous) continues to be assessed in clinical studies in SLE in various countries, and the intravenous formulation is under regulatory review in the EU and Japan. This article summarizes the milestones in the development of anifrolumab leading to this first approval for the treatment of moderate to severe SLE. [ABSTRACT FROM AUTHOR]

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