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Hepatitis BPhase 4NCT03933384

Tenofovir Alafenamide Versus Entecavir for the Treatment of Chronic Hepatitis B

A Phase 4 study testing Tenofovir alafenamide and Entecavir in people with Hepatitis B and Viral Hepatitis, run by Taichung Veterans General Hospital at 1 site in Taiwan.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

To compare the efficacy and renal safety of tenofovir alafenamide (TAF) versus entecavir (ETV) in the chronic hepatitis B patients. Read more about this study

Who is it for?
Ages 20 years and older
Conditions the study is for
Hepatitis B, Viral Hepatitis
What is being tested?
Tenofovir alafenamide and Entecavir
Could I receive a placebo?
No, everyone receives an active treatment
How many people
140 participants
Where
1 siteTaiwan
Study dates
19 Aug 2019to 31 Dec 2030
Phase
Phase 4
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 20 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients more than 20 years old
  • Chronic hepatitis B patients
  • Patients who were indicated for hepatitis B virus antiviral therapy

Who cannot join

  • Decompensated liver disease (Child-Pugh B \&C)
  • End stage renal disease (eGRF < 15 ml/min/1.73m2)
  • Prior use of nucleot(s)ide analogues for chronic hepatitis B
  • Prior use of interferon for chronic hepatitis B within six months
  • Known history of human immunodeficiency virus or hepatitis C virus co-infection
  • Concurrent other uncontrolled malignancy
  • Women in pregnancy or lactation
  • Cannot conform to the study protocol of this study

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Taiwan1 site, 1 recruiting
  • Taichung Veterans General Hospital

    Taichung, Taichung

    Teng-Yu Lee, MD, PhD, 886-4-23592525 ext. 3301, tylee@vghtc.gov.tw

    Recruiting

Other trials in Taiwan

About this study

Official title: Tenofovir Alafenamide Versus Entecavir for the Treatment of Chronic Hepatitis B: An Open Label, Randomized Controlled Trial

To compare the efficacy and renal safety of tenofovir alafenamide (TAF) versus entecavir (ETV) in the chronic hepatitis B patients.

Read the detailed description

With high antiviral potency and low drug resistance rate, both ETV and tenofovir disoproxil fumarate (TDF) have been recommended as the first-line antiviral therapy for chronic hepatitis B (CHB). However, risk of renal dysfunction remains an issue in TDF long-term therapy. Tenofovir alafenamide (TAF) is a novel prodrug of tenofovir and is formulated to deliver the active metabolite to target cells more efficiently than TDF at lower doses, thereby reducing systemic exposure to tenofovir. Importantly, TAF had improved renal safety as compared to TDF. TAF has been approved for treating CHB since 2017; however, it is still unknown whether the efficacy and renal safety of TAF is compatible to those of ETV. The investigators aim to conduct an open label, randomized controlled trial comparing TAF with ETV for assessing their efficacy and renal safety in CHB patients. The eligible CHB patients are randomly assigned (1:1) to receive TAF or ETV. After allocation to TAF group or ETV group, study subjects will receive therapy for 3 years (144 weeks).

Being tested
Tenofovir alafenamide, Entecavir
Keywords
Hepatitis B, Viral Hepatitis, Tenofovir alafenamide, Entecavir
Medical subject headings
Hepatitis B

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Tenofovir alafenamideDrug

    Also called Vemlidy

    Tenofovir alafenamide 25mg/tab once daily

  • EntecavirDrug

    Also called Baraclude

    Entecavir 0.5mg/tab once daily

Study groups in NCT03933384
Study groupRoleWhat they receive
Tenofovir alafenamide groupActive comparatorStudy subjects will receive tenofovir alafenamide 25 mg/tab once daily
Receives: Drug: Tenofovir alafenamide
Entecavir groupActive comparatorStudy subjects will receive entecavir 0.5 mg/tab once daily
Receives: Drug: Entecavir

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. HBV viral suppression

    proportion of patients with hepatitis B virus(HBV) -DNA suppression

    Measured: After 48-week therapy of Tenofovir alafenamide or entecavir

  2. Renal safety: Change of estimated glomerular filtration rate

    Change of estimated glomerular filtration rate

    Measured: After 48-week therapy of Tenofovir alafenamide or entecavir

Secondary outcomes (5)
  1. Renal safety: Change of estimated glomerular filtration rate

    Change of estimated glomerular filtration rate

    Measured: After 144-week therapy of Tenofovir alafenamide or entecavir

  2. HBV viral suppression

    proportion of patients with hepatitis B virus(HBV) -DNA suppression

    Measured: After 144-week therapy of Tenofovir alafenamide or entecavir

  3. Normalization alanine aminotransferase (ALT)

    proportion of patients with ALT normalization

    Measured: After 144-week therapy of Tenofovir alafenamide or entecavir

  4. HBsAg loss

    proportion of patients with HBsAg loss

    Measured: After 144-week therapy of Tenofovir alafenamide or entecavir

  5. Bone mineral density

    change of bone mineral density

    Measured: After 144-week therapy of Tenofovir alafenamide or entecavir

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 May 2019
  2. Study start19 Aug 2019
  3. Primary completion31 Dec 2027 (estimated)
  4. Study completion31 Dec 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a study designed for non-inferior outcome comparisons for TAF and ETV. The eligible chronic hepatitis B patients are randomly assigned (1:1) to receive once-daily oral doses of TAF 25 mg or ETV 0.5mg.
Masking
None (open label)
Enrolment
140 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03933384
Sponsor's protocol ID
CF18341A
Other IDs
106DHA0500150
Status last verified
May 2026
First submitted
28 Apr 2019
Last updated
14 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Perz JF, Armstrong GL, Farrington LA, Hutin YJ, Bell BP. The contributions of hepatitis B virus and hepatitis C virus infections to cirrhosis and primary liver cancer worldwide. J Hepatol. 2006 Oct;45(4):529-38. doi: 10.1016/j.jhep.2006.05.013. Epub 2006 Jun 23.

    PubMed 16879891
  • Chen DS, Sung JL. Hepatitis B virus infection on Taiwan. N Engl J Med. 1977 Sep 22;297(12):668-9. doi: 10.1056/NEJM197709222971213. No abstract available.

    PubMed 757978
  • Ni YH, Chang MH, Wu JF, Hsu HY, Chen HL, Chen DS. Minimization of hepatitis B infection by a 25-year universal vaccination program. J Hepatol. 2012 Oct;57(4):730-5. doi: 10.1016/j.jhep.2012.05.021. Epub 2012 Jun 2.

    PubMed 22668640
  • Chiang CJ, Yang YW, Chen JD, You SL, Yang HI, Lee MH, Lai MS, Chen CJ. Significant reduction in end-stage liver diseases burden through the national viral hepatitis therapy program in Taiwan. Hepatology. 2015 Apr;61(4):1154-62. doi: 10.1002/hep.27630. Epub 2015 Feb 10.

    PubMed 25476749
  • Terrault NA, Lok ASF, McMahon BJ, Chang KM, Hwang JP, Jonas MM, Brown RS Jr, Bzowej NH, Wong JB. Update on prevention, diagnosis, and treatment of chronic hepatitis B: AASLD 2018 hepatitis B guidance. Hepatology. 2018 Apr;67(4):1560-1599. doi: 10.1002/hep.29800. No abstract available.

    PubMed 29405329
  • European Association for the Study of the Liver. EASL 2017 Clinical Practice Guidelines on the management of hepatitis B virus infection. J Hepatol. 2017 Aug;67(2):370-398. doi: 10.1016/j.jhep.2017.03.021. Epub 2017 Apr 18.

    PubMed 28427875
  • Kang L, Pan J, Wu J, Hu J, Sun Q, Tang J. Anti-HBV Drugs: Progress, Unmet Needs, and New Hope. Viruses. 2015 Sep 15;7(9):4960-77. doi: 10.3390/v7092854.

    PubMed 26389937
  • Lai CL, Shouval D, Lok AS, Chang TT, Cheinquer H, Goodman Z, DeHertogh D, Wilber R, Zink RC, Cross A, Colonno R, Fernandes L; BEHoLD AI463027 Study Group. Entecavir versus lamivudine for patients with HBeAg-negative chronic hepatitis B. N Engl J Med. 2006 Mar 9;354(10):1011-20. doi: 10.1056/NEJMoa051287.

    PubMed 16525138
  • Marcellin P, Heathcote EJ, Buti M, Gane E, de Man RA, Krastev Z, Germanidis G, Lee SS, Flisiak R, Kaita K, Manns M, Kotzev I, Tchernev K, Buggisch P, Weilert F, Kurdas OO, Shiffman ML, Trinh H, Washington MK, Sorbel J, Anderson J, Snow-Lampart A, Mondou E, Quinn J, Rousseau F. Tenofovir disoproxil fumarate versus adefovir dipivoxil for chronic hepatitis B. N Engl J Med. 2008 Dec 4;359(23):2442-55. doi: 10.1056/NEJMoa0802878.

    PubMed 19052126
  • van Bommel F, Wunsche T, Mauss S, Reinke P, Bergk A, Schurmann D, Wiedenmann B, Berg T. Comparison of adefovir and tenofovir in the treatment of lamivudine-resistant hepatitis B virus infection. Hepatology. 2004 Dec;40(6):1421-5. doi: 10.1002/hep.20464.

    PubMed 15565615
  • Tsai HJ, Chuang YW, Lee SW, Wu CY, Yeh HZ, Lee TY. Using the chronic kidney disease guidelines to evaluate the renal safety of tenofovir disoproxil fumarate in hepatitis B patients. Aliment Pharmacol Ther. 2018 Jun;47(12):1673-1681. doi: 10.1111/apt.14682. Epub 2018 Apr 25.

    PubMed 29696665
  • Stevens PE, Levin A; Kidney Disease: Improving Global Outcomes Chronic Kidney Disease Guideline Development Work Group Members. Evaluation and management of chronic kidney disease: synopsis of the kidney disease: improving global outcomes 2012 clinical practice guideline. Ann Intern Med. 2013 Jun 4;158(11):825-30. doi: 10.7326/0003-4819-158-11-201306040-00007.

    PubMed 23732715
  • Chan HL, Fung S, Seto WK, Chuang WL, Chen CY, Kim HJ, Hui AJ, Janssen HL, Chowdhury A, Tsang TY, Mehta R, Gane E, Flaherty JF, Massetto B, Gaggar A, Kitrinos KM, Lin L, Subramanian GM, McHutchison JG, Lim YS, Acharya SK, Agarwal K; GS-US-320-0110 Investigators. Tenofovir alafenamide versus tenofovir disoproxil fumarate for the treatment of HBeAg-positive chronic hepatitis B virus infection: a randomised, double-blind, phase 3, non-inferiority trial. Lancet Gastroenterol Hepatol. 2016 Nov;1(3):185-195. doi: 10.1016/S2468-1253(16)30024-3. Epub 2016 Sep 22.

    PubMed 28404091
  • Buti M, Gane E, Seto WK, Chan HL, Chuang WL, Stepanova T, Hui AJ, Lim YS, Mehta R, Janssen HL, Acharya SK, Flaherty JF, Massetto B, Cathcart AL, Kim K, Gaggar A, Subramanian GM, McHutchison JG, Pan CQ, Brunetto M, Izumi N, Marcellin P; GS-US-320-0108 Investigators. Tenofovir alafenamide versus tenofovir disoproxil fumarate for the treatment of patients with HBeAg-negative chronic hepatitis B virus infection: a randomised, double-blind, phase 3, non-inferiority trial. Lancet Gastroenterol Hepatol. 2016 Nov;1(3):196-206. doi: 10.1016/S2468-1253(16)30107-8. Epub 2016 Sep 22.

    PubMed 28404092

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Tenofovir alafenamide and Entecavir in people with Hepatitis B and Viral Hepatitis, run by Taichung Veterans General Hospital at 1 site in Taiwan.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 14 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Teng-Yu Lee, MD, PhD (886-4-23592525 ext. 3301, tylee@vghtc.gov.tw), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

HBV viral suppression (time frame: After 48-week therapy of Tenofovir alafenamide or entecavir). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03933384, which also lists 14 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 May 2026.

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