Ribavirin to Enhance Hepatitis B Virus Nucleotide Analog Antiviral Activity
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ClinicalTrials.gov Identifier: NCT03759782 |
Recruitment Status :
Recruiting
First Posted : November 30, 2018
Last Update Posted : September 14, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Hepatitis B, Chronic | Drug: Ribavirin Drug: Tenofovir | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 24 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Open-label |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Use of Immune Modulatory Properties of Ribavirin to Enhance Hepatitis B Virus Nucleotide Analog Antiviral Activity: Proposal for Pilot Clinical Trial |
Actual Study Start Date : | January 10, 2019 |
Estimated Primary Completion Date : | January 31, 2022 |
Estimated Study Completion Date : | September 30, 2022 |

Arm | Intervention/treatment |
---|---|
Experimental: Group 1
Tenofovir (TDF) 300 mg po once a day (OD)
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Drug: Tenofovir
Tenofovir as per standard of care |
Active Comparator: Group 2
Tenofovir 300 mg po OD + Ribavirin 400 mg twice a day (BID) if <70kg / 600 mg every (q) in the morning (AM) and 400 mg q in the evening (PM) if ≥70kg
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Drug: Ribavirin
Ribavirin will be added to the standard of care treatment (tenofovir) regime for 24 weeks. Drug: Tenofovir Tenofovir as per standard of care |
- The Decline of Participants Serum HBV DNA values for both study arms at each study. [ Time Frame: 24 weeks ]The absolute decline in HBV DNA and quantitative HBsAg titre will be compared with baseline level at each study visit overall and between study arms (with or without RBV).
- Fibroscan score [ Time Frame: 24 weeks ]Individual fibroscan scores pre and post treatment for each group, using fibrosis scores calculated in kilopascal F0 representing no fibrosis and F4 value indicating cirrhosis.
- Liver enzyme values [ Time Frame: 24 weeks ]Participants individual reduction in liver enzymes at each visit.
- Number of participants with treatment related adverse events as assessed by CTCAE v4.0. [ Time Frame: 28 weeks ]Safety profile of TDF plus Ribavirin regime

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- HBV Hepatitis B surface antigen (HBsAg) positive for a minimum of 24 weeks
- HBV DNA level >20,000 IU/mL
- ≥ 18 years of age
Exclusion Criteria:
- Willingness and ability to sign an informed consent
- HBV nucleos(t)ides and/or interferon exposure within 24 weeks of study medication dosing
- HIV and other immune compromising condition (e.g. cancer with the exception of non-invasive cutaneous malignancy, autoimmune condition) or therapy (i.e. systemic steroids, chemotherapy)
- HCV co-infected
- Cirrhosis (defined by biopsy criteria or as >18.4 kilopascal (kPa) by transient elastography)
- Creatinine Clearance <60 ml/min
- Baseline hemoglobin <130 g/L in males and <120 g/L in females
- Unwilling or unable to use contraception (unless confirmed surgical sterilization)
- Pregnancy confirmed by blood test

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03759782
Contact: Curtis L Cooper, MD | 613.737.8924 | ccooper@toh.ca | |
Contact: Miriam I Muir, RN BA | 613737.8899 ext 72723 | mimmuir@toh.ca |
Canada, Alberta | |
Cumming School of Medicine, University of Calgary | Recruiting |
Calgary, Alberta, Canada, T2N4Z6 | |
Contact: Carla Coffin, MD 403-592-5049 cacoffin@ucalgary.ca | |
Contact: Leah Kilvert, BSCN 403.220.8966 lvkilver@ucalgary.ca | |
Sub-Investigator: Carla Coffin, MD | |
Canada, Ontario | |
Ottawa Hospital Research Institute | Recruiting |
Ottawa, Ontario, Canada, K1H8L6 | |
Contact: Curtis Cooper, MD 6137378924 ccooper@toh.ca | |
Contact: Miriam Muir, RN 6137378899 ext 72723 mmuir@toh.ca |
Principal Investigator: | Curtis L Cooper, MD | Ottawa Hospital Research Institute |
Responsible Party: | Ottawa Hospital Research Institute |
ClinicalTrials.gov Identifier: | NCT03759782 |
Other Study ID Numbers: |
20180733 |
First Posted: | November 30, 2018 Key Record Dates |
Last Update Posted: | September 14, 2021 |
Last Verified: | September 2021 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Hepatitis B Hepatitis B, Chronic Hepatitis A Hepatitis Liver Diseases Digestive System Diseases Hepatitis, Viral, Human Virus Diseases Infections Enterovirus Infections Picornaviridae Infections RNA Virus Infections Blood-Borne Infections Communicable Diseases |
Hepadnaviridae Infections DNA Virus Infections Hepatitis, Chronic Tenofovir Ribavirin Antiviral Agents Anti-Infective Agents Reverse Transcriptase Inhibitors Nucleic Acid Synthesis Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Anti-HIV Agents Anti-Retroviral Agents Antimetabolites |