The FDA has awarded rare pediatric disease designation to Orphagen Pharmaceuticals Inc.'s OR-449 for the treatment of pediatric adrenocortical carcinoma (ACC). OR-449 is a selective, first-in-class, potent and orally bioavailable small-molecule antagonist to steroidogenic factor-1 (SF-1; NR5A1), an orphan nuclear receptor and transcription factor that is essential for the growth and development of the adrenal gland.
Orphagen Pharmaceuticals Inc. has presented SF1 (NR5A1) receptor antagonists reported to be useful for the treatment of cancer, endocrine disease and endometriosis.