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Hepatitis B, ChronicPhase 3NCT00410072

Entecavir Plus Tenofovir Combination Therapy Versus Entecavir Monotherapy in Naive Subjects With Chronic Hepatitis B

A Phase 3 study testing Entecavir and Entecavir + Tenofovir in people with Hepatitis B, Chronic, run by Bristol-Myers Squibb at 68 sites in 13 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The purpose of this study is to compare the effectiveness of entecavir plus tenofovir combination therapy with that of entecavir monotherapy. Safety will also be studied. Read more about this study

Who is it for?
Ages 16 years and older
Conditions the study is for
Hepatitis B, Chronic
What is being tested?
Entecavir and Entecavir + Tenofovir
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
669 participants
Where
68 sitesin 13 countries
Study dates
Apr 2007to Oct 2010
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 16 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Chronic hepatitis B virus (HBV) infection (hepatitis B e antigen [HbeAg]-positive or negative) disease
  • Nucleoside- and nucleotide-naive
  • Males or females ≥16 years of age (or minimum age of consent in a given country)
  • Compensated liver function
  • HBV DNA >1.72*10*5*IU/mL (approximately 10*6*copies/mL) for HbeAg-positive participants
  • HBV DNA >1.72*10*4*IU/mL (approximately 10*5*copies/mL) for Hbe-Ag-negative participants
  • Alanine aminotransferase level ≥*upper limit of normal (ULN) and ≤10*ULN

Who cannot join

  • Evidence of decompensated cirrhosis
  • Coinfection with human immunodeficiency virus, hepatitis C virus, or hepatitis D virus
  • Laboratory values out of protocol-specified range

Trial locations and contacts

68 sites in 13 countries.

68 sites in 13 countries

United States16 sites
  • University Of Michigan Health System

    Ann Arbor, Michigan, 48109

  • Atlanta Gastroenterology Associates

    Atlanta, Georgia, 30308

  • Digestive Healthcare Of Georgia

    Atlanta, Georgia, 30309

  • Digestive Disease Associates, P.A.

    Baltimore, Maryland, 21229

  • Beth Israel Deaconess Medical Center

    Boston, Massachusetts, 02215

  • Sing Chan, Md

    Flushing, New York, 11355

  • Maryland Digestive Disease Research, Llc

    Laurel, Maryland, 20707

  • Sergio E. Rojter

    Los Angeles, California, 90017

  • North Shore University

    Manhasset, New York, 11030

  • University Of Miami

    Miami, Florida, 33136

  • Yale University School Of Medicine

    New Haven, Connecticut, 06510

  • Beth Israel Medical Center

    New York, New York, 10003

  • Concorde Medical Group

    New York, New York, 10016

  • Mount Sinai School Of Medicine

    New York, New York, 10029

  • Tuan Nguyen, Md

    San Diego, California, 92105

  • San Jose Gastroenterology

    San Jose, California, 95128

Other trials in United States

Russia8 sites
  • Local Institution

    Moscow, 105275

  • Local Institution

    Moscow, 115446

  • Local Institution

    Moscow, 117593

  • Local Institution

    Saint Petersburg, 190103

  • Local Institution

    Saint Petersburg, 191163

  • Local Institution

    Saint Petersburg, 191167

  • Local Institution

    Saint Petersburg, 194044

  • Local Institution

    Smolensk, 214018

Other trials in Russia

Canada6 sites
  • Local Institution

    Calgary, Alberta, T2N 4Z6

  • Local Institution

    Toronto, Ontario, M3N 2V7

  • Local Institution

    Toronto, Ontario, M5G 2N2

  • Local Institution

    Toronto, Ontario, M5T 2S8

  • Local Institution

    Vancouver, British Columbia, V5Z 1H2

  • Local Institution

    Winnipeg, Manitoba, R3E 3P4

Other trials in Canada

France6 sites
  • Local Institution

    Grenoble, 38043

  • Local Institution

    Marseille, 13285

  • Local Institution

    Paris, 75013

  • Local Institution

    Paris, 75014

  • Local Institution

    Paris, 75571

  • Local Institution

    Strasbourg, 67090

Other trials in France

Australia5 sites
  • Local Institution

    Clayton Vic, Victoria, 3168

  • Local Institution

    Fitzroy, Victoria, 3065

  • Local Institution

    Heidelberg, Victoria, 3084

  • Local Institution

    Prahan, Victoria, 3004

  • Local Institution

    Westmead Nsw, New South Wales, 2145

Other trials in Australia

Poland5 sites
  • Local Institution

    Bialystok, 15-540

  • Local Institution

    Chorzów, 41-500

  • Local Institution

    Krakow, 31-531

  • Local Institution

    Lublin, 20-081

  • Local Institution

    Warsaw, 01-201

Other trials in Poland

Argentina4 sites
  • Local Institution

    Ciudad de Buenos Aires, Buenos Aires, C1121ABE

  • Local Institution

    Ciudad de Buenos Aires, Buenos Aires, C1181ACH

  • Local Institution

    Ciudad de Buenos Aires, Buenos Aires, C1282AEN

  • Local Institution

    Rosario, Prov de Santa, S2000PBJ

Other trials in Argentina

India4 sites
  • Local Institution

    Hyderabad, Andhra Pradesh, 500082

  • Local Institution

    Lucknow, 226014

  • Local Institution

    Ludhiana, 141001

  • Local Institution

    Vellore, 632004

Other trials in India

Italy4 sites
  • Local Institution

    Antella Firenze, 50012

  • Local Institution

    Brescia, 25123

  • Local Institution

    Pisa, 56124

  • Local Institution

    Roma, 00149

Other trials in Italy

Turkey (Türkiye)4 sites
  • Local Institution

    Bornova Izmir, 35100

  • Local Institution

    Cebeci Ankara, 06620

  • Local Institution

    Sihhiye Ankara, 06100

  • Local Institution

    Trabzon, 61080

Other trials in Turkey (Türkiye)

South Africa3 sites
  • Local Institution

    Bellville, Western Cape, 7530

  • Local Institution

    N1 City Goodwood, Western Cape, 7463

  • Local Institution

    Pretoria, Gauteng, 0001

Other trials in South Africa

Brazil2 sites
  • Local Institution

    Belo Horizonte, Minas Gerais, 30150

  • Local Institution

    Porto Alegre Rs, Rio Grande do Sul, 90035

Other trials in Brazil

Mexico1 site
  • Local Institution

    Durango, Durango, 34229

Other trials in Mexico

About this study

Official title: A Comparative Study of Chronic Hepatitis B Subjects Treated With Entecavir Plus Tenofovir Combination Therapy vs. Entecavir Monotherapy in Adults Who Are Treatment-Naive to Nucleosides and Nucleotides: The BE-LOW Study

The purpose of this study is to compare the effectiveness of entecavir plus tenofovir combination therapy with that of entecavir monotherapy. Safety will also be studied.

Being tested
Entecavir, Entecavir + Tenofovir
Medical subject headings
Hepatitis B, Chronic

What participants receive

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

  • EntecavirDrug

    Also called Baraclude, BMS-200475

    Tablets, Oral, ETV = 0.5 mg, once daily, 100 weeks

  • Entecavir + TenofovirDrug

    Also called Baraclude, BMS-200475

    Tablets, Oral, ETV = 0.5 mg + TFV = 300 mg, once daily, 100 weeks

Study groups in NCT00410072
Study groupRoleWhat they receive
TDF 0.5 mgExperimentalTDF=tenofovir
Receives: Drug: Entecavir
ETV 0.5 mg +TDF 300 mgExperimentalETV=entecavir; TDF=tenofovir
Receives: Drug: Entecavir + Tenofovir

What is being measured

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

  1. Percentage of Participants Who Achieved Hepatitis B Virus DNA (HBV DNA) Levels <50 IU/mL by Polymerase Chain Reaction (PCR) at Week 96

    HBV DNA levels <50 IU/mL=approximately 300 copies/mL. Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Week 96

Secondary outcomes (15)
  1. Percentage of Participants Who Achieved HBV DNA Levels <50 IU/mL by PCR at Week 48 and Week 96 by Hepatitis B e Antigen (HBeAg) Status

    HBV DNA levels <50 IU/mL=approximately 300 copies/mL. Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  2. Percentage of Participants Who Achieved HBV DNA Levels <LOQ by PCR at Weeks 48 and 96

    LOQ=lower limit of quantitation. LOQ=29 IU/mL, or approximately 169 copies/mL. LOQ is the level above which quantitative results may be obtained with a specified degree of confidence. The LOQ is mathematically defined as equal to 10 times the standard deviation of the results for a series of replicates used to determine a justifiable limit of detection. Limits of quantitation are matrix-, method-, and analyte-specific.Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  3. Percentage of Participants Who Achieved HBV DNA Levels <LOD by PCR at Weeks 48 and 96

    LOD=Lower limit of detection. LOD) LOD=10 IU/mL, or approximately 58 copies/mL. LOD is the lowest concentration level that can be determined to be statistically different from a blank (99% confidence). The LOD is typically determined to be in the region where the signal to noise ratio is greater than 5. Limits of detection are matrix-, method-, and analyte-specific.Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  4. Mean Log 10 HBV DNA at Weeks 48 and 96

    HBV DNA was analyzed by PCR, using the Roche COBAS®TaqMan - HPS assay. Reduction in Log 10 HBV count=reduced viral load.

    Measured: Baseline, Weeks 48 and 96

  5. Percentage of Participants With Alanine Aminotransferase (ALT) Normalization at Weeks 48 and 96

    ALT normalization= ≤1*upper limit of normal (ULN). Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  6. Percentage of Participants With Hepatitis B e Antigen (HBeAg) Loss at Weeks 48 and 96

    HBeAg is a hepatitis B viral protein and is an indicator of active viral replication. Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  7. Percentage of Participants With HBeAg Seroconversion [( at Weeks 48 and 96

    HBeAg seroconversion=HBeAg loss and presence of hepatitis B e antibody (HBeAb). HBeAg is a hepatitis B viral protein and is an indicator of active viral replication.

    Measured: At Weeks 48 and 96

  8. Percentage of Participants With Hepatitis B Surface Antigen (HBsAg) Loss at Weeks 48 and 96

    HBsAg = A part of the hepatitis B virus. When found in the blood, HBsAg is an early marker of infection. Analyses of binary efficacy endpoint during on-treatment period focused on participants who received treatment and used the analysis of noncompleter=failure (NC=F). All participants who received treatment were included in the denominator, and participants with missing measurements were counted as nonresponders for the specific endpoints.

    Measured: At Weeks 48 and 96

  9. Percentage of Participants With HBsAg Seroconversion at Weeks 48 and 96

    HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection.

    Measured: At Weeks 48 and 96

  10. Number of Participants With HBV DNA in Relevant Categories at Weeks 48 and 96

    Using the Roche COBAS TaqMan - HPS assay. Lower limit of Quantitation (LOQ) is the level above which quantitative results may be obtained with a specified degree of confidence. The LOQ is mathematically defined as equal to 10 times the standard deviation of the results for a series of replicates used to determine a justifiable limit of detection. Limits of quantitation are matrix-, method-, and analyte-specific.

    Measured: At Weeks 48 and 96

  11. Number of Participants With Adverse Events, Serious Adverse Events, and Discontinuations From Study Drug Due to Adverse Events or Laboratory Abnormalities

    AE: any new untoward medical occurrence/worsening of pre-existing medical condition, whether or not related to study drug. SAE: any AE that resulted in death; was life threatening; resulted in persistent/significant disability/incapacity; resulted in/prolonged an existing in-patient hospitalization; was a congenital anomaly/birth defect; or was an overdose. Participants who discontinued the study due to any AEs were recorded.

    Measured: From enrollment through Week 100 + 24-week follow-up

  12. Number of Participants With HBV Resistance Through Week 48

    ETVr=entecavir resistance; TDFr=tenofovir resistance. HBV polymerase using the Trugene® HBV Genotyping Kit. HBV resistance: genotyping of HBV polymerase will be performed on stored viral samples at any timepoint when considered appropriate based on virologic response, including any specimen with detectable HBV DNA. When appropriate, phenotyping will also be used.

    Measured: Week 48

  13. Number of Participants With HBV Resistance at Week 96

    ETVr=entecavir resistance; TFDr=tenofovir resistance. HBV polymerase using the Trugene® HBV Genotyping Kit. HBV resistance: genotyping of HBV polymerase will be performed on stored viral samples at any timepoint when considered appropriate based on virologic response, including any specimen with detectable HBV DNA. When appropriate, phenotyping will also be used.

    Measured: Week 96

  14. Number of Participants With Virologic Breakthrough at Week 48

    ETVr=entecavir resistance; TFDr=tenofovir resistance. Virologic breakthrough= confirmed >= 1 log10 increase in HBV DNA from the on-treatment nadir

    Measured: Week 48

  15. Number of Participants With Virologic Breakthrough at Week 96

    ETVr=entecavir resistance; TFDr=tenofovir resistance. Virologic breakthrough=confirmed >=1 log10 increase in HBV DNA from moving nadir

    Measured: Week 96

Timeline

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

  1. First posted12 Dec 2006 (estimated)
  2. Study startApr 2007
  3. Primary completionOct 2010
  4. Study completionOct 2010

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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
669 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00410072
Sponsor's protocol ID
AI463-110
Status last verified
Mar 2013
First submitted
11 Dec 2006
Last updated
15 Mar 2013
Data monitoring committee
No

Publications

  • Lok AS, Trinh H, Carosi G, Akarca US, Gadano A, Habersetzer F, Sievert W, Wong D, Lovegren M, Cohen D, Llamoso C. Efficacy of entecavir with or without tenofovir disoproxil fumarate for nucleos(t)ide-naive patients with chronic hepatitis B. Gastroenterology. 2012 Sep;143(3):619-628.e1. doi: 10.1053/j.gastro.2012.05.037. Epub 2012 May 27.

    PubMed 22643350

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Entecavir and Entecavir + Tenofovir in people with Hepatitis B, Chronic, run by Bristol-Myers Squibb at 68 sites in 13 countries.

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 7 inclusion and 3 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: finished, as of the sponsor's last update on 15 Mar 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 68 sites in United States, Russia, Canada, France, Australia and 8 more countries. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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

Are results available for this study?

Yes. Results are posted in the registry (first posted 3 Feb 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants Who Achieved Hepatitis B Virus DNA (HBV DNA) Levels <50 IU/mL by Polymerase Chain Reaction (PCR) at Week 96 (time frame: At Week 96). 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 NCT00410072, which also lists 1 linked publication.

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 15 Mar 2013.

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