Clinical trials play an important role in the development and approval of treatments for hepatitis B virus infection. Clinical trials can show how well new medicines work in people and can compare new medicines with current treatment options. They provide a great opportunity to help advance hepatitis B research and give people living with hepatitis B virus infection access to new treatments.
GSK is launching a new phase 2b clinical trial called B-United, which will test a study drug called daplusiran/tomligisiran (DAP/TOM) followed by another study drug called bepirovirsen as a potential new treatment for chronic hepatitis B virus infection.
DAP/TOM is designed to lower the level of a protein called hepatitis B surface antigen in your blood. Bepirovirsen is designed to further lower the level of hepatitis B surface antigen and stop the virus from making it, which might allow the immune system to control the virus. The therapy being tested in this study is not currently approved for treating chronic hepatitis B virus infection. However, the study drugs have been given to adults in other studies. B-United is the first study in which the two study drugs are given in sequence to adults.
If eligible, you will receive an investigational therapy that consists of:
1) DAP/TOM OR placebo for 24 weeks followed by
2) Bepirovirsen for 24 weeks
You will continue your nucleoside/nucleotide analogue (NA) treatment while receiving the study drug(s)/placebo. This means that if you join this study, you will have the opportunity to receive at least one experimental treatment. Following study treatment with DAP/TOM (or placebo) and bepirovirsen, you will continue your NA treatment for 24 more weeks. The study doctor will then determine if you can stop your NA treatment and, if so, you will be off NA treatment for up to 28 weeks while closely monitored by the study doctor.
You could be in the study for up to 110 weeks (about 2 years). You will not know whether you are receiving DAP/TOM or placebo, and neither will the doctor (until after the study ends). You will have medical visits throughout the study, where the doctor will check on hepatitis B viral activity and your overall health.
You may be eligible to participate in the B-United study if you:
- Are at least 18 years old (the minimum age may be higher in some countries);
- Have had diagnosed chronic hepatitis B virus infection for at least 6 months;
- Have been on stable NA treatment (sometimes referred to as antivirals, such as tenofovir or entecavir) for the past 6 months, without any changes for the past 3 months.
You will also need to meet additional requirements. The study doctor will review these with you.
The B-United study is being run in many countries, so there is an opportunity for people in many areas of the world to participate. To find out more information and see if you might be eligible, please visit www.BUnitedStudy.com.