Hep C Edition.pdf | Page 37

Considerations for Formulatory Strategy and Management of Hepatitis C A Payer’s Perspective Chris Anderson, PharmD, BCPS Alex James, PharmD Fran Gregory, PharmD, MBA Tyler Whisman, PharmD, BCOP Humana The authors report no financial conflicts with any products discussed in this paper. It is estimated that 3.2 million Americans are chronically infected with the Hepatitis C virus (HCV)1. Underdiagnoses of HCV infection continues to be a concern due to slow disease progression and the primarily asymptomatic nature of the disease course. As a result, approximately 1.6 million or half of the estimated HCV cases, remain undiagnosed2. In response, the Center for Disease Control and Prevention (CDC) now recommends that all U.S. citizens born between 1945 and 1965 be tested for the presence of HCV1. HCV infection remains the leading cause of chronic liver disease, hepatocellular carcinoma (HCC), liver transplantation, and death due to liver disease3. Of those chronically infected, 5% to 20% will eventually develop cirrhosis in the 20 to 30 years after infection and up to 5% will die from consequences of chronic infection such as HCC or cirrhosis1. The HCV treatment market has undergone rapid changes over the last several years. There has been an unprecedented expansion in HCV treatment options and guideline recommendations have reflected this shift in the treatment paradigm. The goal of therapy remains a clinical cure also known as a sustained viral response (SVR), but shorter treatment durations and more effective therapies continue to drive market competition. In 2011, an HCV treatment milestone was achieved with the approval of the first direct-acting antiviral (DAA) agents for HCV. Prior to the approval of boceprevir and telaprevir in 2011, the standard of care was the combination of pegylated interferon and ribavirin. Boceprevir and telaprevir are both NS3/4A protease inhibitors which used in combination with pegylated interferon and ribavirin provide a substantial improvement in SVR rates. 2013 also saw radical changes in the way HCV was treated. Simeprevir, another NS3/4A protease inhibitor, and sofosbuvir, a novel NS5B polymerase inhibitor, were approved late in 2013. As a result, the American Association for the Study of Liver Diseases (AASLD) updated their guidelines to reflect the changing treatment landscape. Boceprevir and telaprevir are now no longer recommended and, to the surprise of many, interferon free regimens are now an option for patients intolerant to interferon based treatments. There is a robust HCV treatment pipeline dominated by combinations of polymerase inhibitors, NS5A inhibitors, and protease inhibitors which will provide both payers and patients with numerous all oral, interferon-free treatment options. Approval of several of these options is expected in 2014 or 2015 and 37