Anti-tumor necrosis factor-α induced systemic lupus erythematosus in a patient with metastatic Crohn's disease--what is the role of anti-TNF antibody?

Biological therapies are supposed to trigger the development of autoimmune diseases. We report a case of a 27-year old woman presenting with drug induced systemic lupus erythematosus (SLE) associated with infliximab therapy. The development of paradoxical inflammation in immune-mediated inflammatory diseases patients treated with anti TNF-α suggests that an unknown inflammatory pathway may be provoked by inhibiting TNF-α. We suppose that in our case a cross reactivity between anti-infliximab antibodies and autoantibodies may lead to the development of TNF-induced immune disease.