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NCT00524173 · ClinicalTrials.gov registry record · Phase 2
Tenofovir Alone Versus Tenofovir With Emtricitabine to Treat Chronic Hepatitis B
A Phase 2 study, sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
- Terminated
- Registry status
- Phase 2
- Development phase
- 35
- Enrollment target
NCT00524173: Clinical Trial Phase 2 study, sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
NCT00524173 is a Phase 2 study that was terminated before completion, run by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). The registered enrollment target is 35 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (74% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00524173, a Phase 2 study, was terminated before completion, sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
- TERMINATED
- Registry status
- Phase 2
- Development phase
- 35 participants
- Enrollment target
Study Summary
This study will test whether the combination of two medications, tenofovir and emtricitabine, are safer and more effective for treating chronic hepatitis B than tenofovir alone. Chronic hepatitis B is a liver disease caused by infection with the hepatitis B virus. Several medications, including standard and pegylated interferon and the anti-viral drugs lamivudine, adefovir, entecavir and telbivudine, are currently used to treat the disease. Problems are associated with all of these agents, however, including development of viral resistance with long-term therapy of the anti-virals. Since many patients require long-term therapy to prevent their disease from worsening, a major goal of new approaches to treatment is to prevent the development of viral resistance. Combination treatment has been shown to be an effective strategy in preventing this resistance. Tenofovir is an anti-viral drug approved for use in patients with HIV infection. In small studies in patients infected with both HIV and hepatitis B, tenofovir lowered the level of hepatitis B virus in the blood, with no viral resistance reported when used for up to 5 years. Emtricitabine is an anti-viral drug similar to lamivudine and is effective at lowering viral load and improving liver damage. Patients 18 years of age and older with chronic hepatitis B may be eligible for this study. Participants are admitted to the NIH Clinical Center for a complete medical history and examination, including blood and urine tests, chest X-ray, electrocardiogram, abdominal ultrasound, Fibroscan (ultrasound exam of the liver that measures the amount of scarring), bone mineral density scan and liver biopsy. They are then randomly assigned to take combination treatment with tenofovir plus emtricitabine or tenofovir alone for at least 48 weeks. During the treatment period, patients visit the Clinical Center for blood tests and a physical examination every 2 weeks for the first month and then every 4 to 12 weeks. After 48 weeks, p
Primary Outcome
Number of subjects whose serum HBV DNA level was \<1000 IU/ml at Week 48
Interventions
- DRUG Tenofovir
- DRUG Tenofovir & Emtricitabine
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 35 participants |
| Start Date | 2007-08-29 |
| Est. Completion | 2017-02-16 |
| Phase | Phase 2 |
Why NCT00524173 stopped before completion
NCT00524173 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 35 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (74% lower).
The record links to 0 conditions, and to 2 interventions - of which Tenofovir is the first listed.
NCT00524173 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00524173 about?
NCT00524173 is a clinical study titled "Tenofovir Alone Versus Tenofovir With Emtricitabine to Treat Chronic Hepatitis B". This study will test whether the combination of two medications, tenofovir and emtricitabine, are safer and more effective for treating chronic hepatitis B than tenofovir alone. Chronic hepatitis B is a liver disease caused by infection with the hepatitis B virus. Several medications, including stan...
What is the current status of trial NCT00524173?
This trial is currently terminated. It is a Phase 2 study. The enrollment target is 35 participants. The study started on 2007-08-29. Estimated completion is 2017-02-16.
What interventions are being tested in trial NCT00524173?
The interventions under investigation include: Tenofovir (DRUG), Tenofovir & Emtricitabine (DRUG).
Who is sponsoring clinical trial NCT00524173?
This trial is sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), which has 490 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00524173's enrollment target sits among peer trials
35 1524th of 2000 higher than 462 of 2,000 other Phase 2 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 2 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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