Chronic hepatitis B (CHB) affects over 350 million individuals worldwide and is the most common cause of liver cancer. In the United States, CHB affects at least 2 to 3 million individuals, and current therapies can control the disease but not cure it. There are over 30 new molecules being studied in CHB in preclinical to phase 2 studies, targeting specific parts of the hepatitis B virus (HBV) life cycle and the host immune response. When discussing new therapies for CHB, it is critical to understand both the various phases of CHB and the life cycle of HBV. This article will discuss both of these issues, as well as mechanisms of action of potential therapies and possible ways to combine such therapies in the various phases of CHB.
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