Infliximab isa monoclonal immunoglobulin G1 antibody to tumor necrosis factor alfa (TNF-α)and is used for the treatment of several inflammatory diseases, such as rheumatoidarthritis, ankylosing spondylitis, psoriasis, Crohn’s disea se, and Behçetdisease (off-label). Here, TNF is linked to ankylosing spondylitis.