JTE-607 Dihydrochloride is a prodrug compound that is converted to an active form by ester hydrolysis. JTE-607 is a multiple cytokine production inhibitor that targets CPSF3 and inhibits pre-mRNA processing. JTE-607 inhibits tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, IL-6, IL-8 and IL-10, from LPS-stimulated human PBMCs, with IC50 values of 11 nM, 5.9 nM, 8.8 nM, 7.3 nM and 9.1 nM, respectively.