Telapristone
Telapristone
Chemical compound
Telapristone (INN ), as telapristone acetate (proposed brand names Proellex, Progenta; former code name CDB-4124), is a synthetic, steroidal selective progesterone receptor modulator (SPRM) related to mifepristone which is under development by Repros Therapeutics for the treatment of breast cancer, endometriosis, and uterine fibroids.[1][2] It was originally developed by the National Institutes of Health (NIH), and, as of 2017, is in phase II clinical trials for the aforementioned indications.[1] In addition to its activity as an SPRM, the drug also has some antiglucocorticoid activity.[3]