Abstract
Filgotinib (Jyseleca®) is an oral, ATP-competitive, reversible JAK1 preferential inhibitor that is being developed by Galapagos NV and Gilead Sciences for the treatment of inflammatory autoimmune diseases, including inflammatory arthritis and inflammatory bowel disease. The JAK-STAT signalling pathway has been implicated in the pathogenesis of inflammatory and autoimmune diseases, and filgotinib modulates this pathway by preventing the phosphorylation and activation of STATs. In September 2020, filgotinib received its first approvals in the EU and Japan. In the EU, filgotinib is indicated for the treatment of moderate to severe active rheumatoid arthritis (RA) in adults who have responded inadequately to, or who are intolerant to, one or more disease-modifying anti-rheumatic drugs (DMARDs). In Japan, filgotinib is indicated for the treatment of RA in patients who had an inadequate response to conventional therapies (including prevention of structural damage to joints). Clinical studies of filgotinib for the treatment of inflammatory autoimmune diseases are ongoing worldwide. This article summarizes the milestones in the development of filgotinib leading to this first approval.
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