Prurisol may be effective as a treatment for Crohn's disease.
"...Interleukin-20 (IL-20) belongs to the IL-10 cytokine family. IL-20 receptor (IL-20R) and IL-20 are expressed in several normal tissue types, including the lungs, skin, and kidney [6, 7]. Moreover, IL-20 has been implicated to play an important role in several autoimmune diseases that include rheumatoid arthritis (RA), lupus nephritis, and Crohn's disease..."