Hepion Pharmaceuticals (formerly known as ContraVir Pharmaceuticals) is a clinical-stage biopharmaceutical company focused on the development of targeted therapies for liver disease arising from non-alcoholic steatohepatitis (NASH) and chronic hepatitis virus infection (HBV, HCV, HDV). Its lead drug candidate, CRV431, reduces liver fibrosis and hepatocellular carcinoma tumor burden in experimental models of NASH. Preclinical studies also have demonstrated antiviral activities towards HBV, HCV, and HDV through several mechanisms. These diverse therapeutic activities result from CRV431’s potent inhibition of cyclophilin enzymes, which are involved in many disease processes.