IDUN Pharmaceuticals, Inc., a biopharmaceutical company, engages in the discovery and development of human therapeutics to control apoptosis. Its products under Phase 2 and preclinical trials include drugs for liver disease, CNS diseases, inflammation, and cancer, as well as IDN-6556 for the treatment of liver diseases in patients infected with Hepatitis C virus. The company was founded in 1993 and is based in San Diego, California. As of July 30, 2010, IDUN Pharmaceuticals, Inc. operates as a subsidiary of Conatus Pharmaceuticals Inc.