FDA Review of Baricitinib Delayed The U.S. Food and Drug Administration (FDA) has extended the review period for baricitinib, an investigational medication for treating moderate to severe rheumatoid arthritis (RA).1 Baricitinib is a once-daily oral Janus kinase (JAK) inhibitor currently in clinical studies for inflammatory and autoimmune diseases. The New Drug Application (NDA) for baricitinib…