Opevesostat

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** An orally bioavailable, non-steroidal, selective inhibitor of the enzyme cytochrome 450 side-chain cleavage (scc) (CYP11A1), with potential antineoplastic activity. Upon oral administration, opevesostat targets, binds to and inhibits the activity of CYP11A1. This prevents the synthesis of all steroid hormones and their precursors. This may inhibit proliferation of hormone-positive tumor cells. CYP11A1, a mitochondrial enzyme, catalyzes the conversion of cholesterol to pregnenolone (Preg), which is the first rate-liming step in steroid hormone biosynthesis.

**Synonyms:** - CYP11A1 inhibitor ODM-208 - MK 5684 - MK-5684 - MK5684 - ODM 208 - ODM-208 - ODM208 - OPEVESOSTAT