What is "asoprisnil"

n. An investigational selective progesterone receptor modulator.

Asoprisnil (J867) is an investigational selective progesterone-receptor modulator developed by Schering and TAP Pharmaceutical Products, tested for treatment of progesterone-sensitive myomata.

In 2005, phase-III trials were discontinued due to endometrial changes in patients. Whether asoprisnil will be marketed is uncertain.