Abstract
Bladder cancer (BC) is one of the most common neoplasms in the world, and its non-muscle invasive form (NMIBC) is treated with resection followed by instillation with BCG. Many types of cancer produce the enzyme indoleamine 2,3-dioxygenase-1 (IDO1), which, by modulating the immune system, protects the tumor, favoring its progression. In addition to having been identified in NMICBC, IDO1 c…