(±)-NLG-919 is an indoleamine 2,3-dioxygenase (IDO) pathway inhibitor (Ki = 7 nM; EC50 = 75 nM). (±)-NLG-919 inhibits IDO-induced T cell suppression and restores T cell response during allogenic mixed lymphocyte reactions in vitro (ED50s = 80 and 120 nM, respectively). In vivo, (±)-NLG-919 induces a 95% reduction in tumor volume when administered in conjunction with a pmel-1 T cell vaccine. Formulations containing (±)-NLG-919 are under investigation in clinical trials for treatment of glioblastoma, melanoma, pancreatic, and breast cancers.
NLG919 is a potent indoleamine-2,3-dioxygenase (IDO) pathway inhibitor and is suitable for the treatment of immunosuppression associated with cancer.
1) Mautino?et al.?(2013),?NLG919, a novel indolamine-2,3-dioxygenase (IDO)-pathway inhibitor drug candidate for cancer therapy;?Cancer Res.?73?issue 8 supplement?491
2) Li?et al.?(2014),?The indolamine 2,3-dioxygenase pathway controls complement-dependent enhancement of chemo-radiation therapy against murine glioblastoma;?J. Immunother. Cancer?2?21
3) Meng?et al.?(2017),?Combinatorial antitumor effects of indoleamine 2,3-dioxygenase inhibitor NLG919 and paclitaxel in a murine B16-F10 melanoma model;?Int. J. Immunopathol. Pharmacol.?30?215
