This Market Spotlight report covers the Hepatitis B market, comprising key marketed and pipeline drugs, clinical trials, recent events and analyst opinion, upcoming and regulatory events, probability of success,patent information, a 10-year disease prevalence forecast, and licensing and acquisition deals, as well as presenting drug-specific revenue forecasts.

Key Takeaways

• It is estimated that in 2017, there were approximately 294.5 million prevalent cases of hepatitis B worldwide, with only 9.9% (29.1 million) of those estimated to be diagnosed.
• In the same year, there were an estimated 4.8 million prevalent cases that were treated with an antiviral. In 2017, there were an estimated 89.4 million total prevalent cases of hepatitis B in the US, China, Japan, and five major EU markets (France, Germany, Italy, Spain, and the UK); 86.0 million of these cases were in China (96.2%).
• Marketed drugs for hepatitis B focus on targets such as DNA polymerase, reverse transcriptase, cell membrane, T lymphocytes, immune system, and interferon receptor. The majority of these drugs are administered via the oral route, with the remainder being intramuscular, subcutaneous, intravenous, intradermal, and topical formulations.
• The majority of the industry-sponsored drugs in active clinical development for hepatitis B are in Phase I. Therapies in early and mid-stage development for hepatitis B focus on a wide variety of targets. The largest number of pipeline drugs in development are administered orally, with the remainder being intravenous, intramuscular, and subcutaneous formulations.
• High-impact upcoming events for drugs in the hepatitis B space comprise topline Phase II trial results, and an expected patent expiry.
• The overall likelihood of approval of a Phase I antiviral asset is 16.3%, and the average probability a drug advances from Phase III is 77.5%. Drugs, on average, take 8.7 years from Phase I to approval, compared to 9.0 years in the overall infectious disease space.
• There have been 37 licensing and asset acquisition deals involving hepatitis B drugs during 2014–19. The largest deal was the $1,775m licensing agreement signed in 2018 between Janssen and Arrowhead, for exclusive worldwide rights to develop and commercialize ARO-HBV for the treatment of chronic hepatitis B.
• The distribution of clinical trials across Phase I–IV indicates that the majority of trials for hepatitis B have been in the late phases of development, with 53% of trials in Phase III–IV, and 47% in Phase I–II.
• The US has a slight lead in the number of hepatitis B clinical trials globally. Germany leads the major EU markets, while China has the top spot in Asia.
• Clinical trial activity in the hepatitis B space is dominated by completed trials. GlaxoSmithKline has the highest number of completed clinical trials for hepatitis B, with 317 trials.
• GlaxoSmithKline leads the industry sponsors with by far the highest overall number of clinical trials for hepatitis B, followed by Gilead.