Used in the treatment of autoimmune diseases such as lupus and rheumatoid arthritis. Acts as a selective inhibitor of the enzyme TYK2 (tyrosine kinase 2), which plays a key role in the signaling pathways of pro-inflammatory cytokines. By blocking TYK2, it helps reduce inflammation and immune system overactivity. Currently under investigation in clinical trials for its efficacy and safety in chronic inflammatory conditions. Shows potential for oral administration with targeted action, minimizing broader immunosuppressive effects commonly seen with other kinase inhibitors.