Clinical Trials

Clinical trials are research studies that test new potential treatments for a disease. Talk to your doctor about possible clinical trials that could be helpful to you.

Glossary: HBV = Hepatitis B, CHB = Chronic hepatitis B, HDV = Hepatitis D, CHD = Chronic hepatitis D, ALT = Alanine aminotransferase, AST = Aspartate aminotransferase, EOT = End of Treatment, NTCP = Sodium/taurocholate cotransporting polypeptide, LNF-containing regimens = Lonafarnib-containing regimens

Recruiting - Phase 3 Study of the Efficacy and Safety of Lonafarnib / Ritonavir With and Without Pegylated Interferon-Alfa-2a (D-LIVR) - U.S. and International

Two LNF-containing regimens will be evaluated in the D-LIVR Phase 3 study: (1) LNF/RTV/PEG IFN-alfa-2a and (2) LNF/RTV. Each of these arms will have efficacy endpoints that measure clinical benefit with regard to viral suppression and ALT normalization. For each LNF-containing regimen, a composite endpoint of EOT (48 weeks) virologic response and ALT normalization will be used. Virologic response will be defined as a 2 log10 IU/mL reduction from baseline. Contact: John Ferraro 650-272-6138 or and refer to identifier NCT03719313. Also visit for more information. 

Currently recruiting patients in:

United States

  • California, Florida, Iowa, Michigan, New York, Oklahoma, Texas


  • Belguim, Bulgaria, Canada, France, Greece, Israel, Italy, New Zealand, Romania, Spain, Taiwan, UK 

Recruiting - Phase 3 Clinical Study to Assess Efficacy and Safety of Bulevirtide (Myrcludex B) in Patients With Chronic Hepatitis Delta - International

This study is designed to assess the long-term efficacy and safety of Bulevirtide in patients with HDV. Contact Dr. Yana Deloveri at +74957265253 or email and refer to identifier NCT03852719.

Currently recruiting patients in:

  • Russia

Recruiting - Phase 2b Study of Bulevirtide (With Peginterferon Alfa-2a) in Patients With CHD - International

A Multicenter, Open-label, Randomized Phase 2b Clinical Study. Contact: Yana Deloveri at +491777168259 or email and refer to identifier NCT03852433.

Currently recruiting patients in:

  • Russia
  • Moldova

Recruiting - The Hepatitis Delta International Network - International

Multicenter, observational study (patients will not receive any treatment) that will build a registry of HDV patients around the world and collect clinical information. Contact: Dr. Heiner Wedemeyer at or Dr. Svenja Hardtke at and refer to identifier NCT02375906.

Currently recruiting patients in: 

  • Brazil
  • Georgia
  • Germany
  • Greece
  • Italy
  • Moldova
  • Romania
  • Spain
  • Vietnam

Recruiting - Phase 2 Study of Ezetimibe for Patients With Chronic Hepatitis D – International

Ezetimibe possesses pharmacophore features to inhibit NTCP, the receptor required for HBV and HDV hepatocyte entry that include two hydrophobes and one hydrogen bond acceptor. Therapy with ezetimibe may lead to decline in HDV levels. The aim of the study is to evaluate the utility of ezetimibe in patients with CHD. Contact: Zaigham Abbas at 922135862937 or email and refer to identifier NCT03099278.

Currently recruiting patients in:

  • Sindh, Pakistan

Recruiting - Evaluation of Patients with Liver Disease, Including Hepatitis D – U.S.

Evaluate, investigate and follow-up patients suffering from acute and chronic liver disease. Qualified patients may be able to participate in other offered studies. Contact Nancy Fryzek at 301-435-6122 or Dr. T. Jake Liang at 301-496-1721 and refer to identifier NCT00001971.

Currently recruiting patients in:

  • Bethesda, Maryland (National Institute of Health)

Clinical Trial Process

Clinical Trial Process FlowChart

Learn more about all current HDV clinical trials.

Additional Resources is a service of the National Institutes of Health that provides a list of all the clinical trials that are being carried out in the United States. You can search for a clinical trial by disease, drug therapy, or trial location. offers a free search service by the Center for Information and Study on Clinical Research Participation (CISCRP) to help you find a clinical trial that may be right for you.

Hepatitis B Clinical Trials Page is a list that is updated each month by the Hepatitis B Foundation of clinical trials specific for hepatitis B.

Updated November 2019.