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CompletedNCT00537537Updated Jun 23, 2017

To Evaluate Antiviral Efficacy of Telbivudine in Hepatitis B Antigen Positive (HbeAg-positive) Compensated Chronic Hepatitis B (CHB)

A Phase 4 interventional study of Telbivudine in Hepatitis B, Chronic, sponsored by Novartis Pharmaceuticals. Completed at 3 sites in India. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-06-23.

Sponsored by Novartis Pharmaceuticals · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
100
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study is to evaluate the antiviral efficacy of add-on adefovir to telbivudine in non-responders to telbivudine monotherapy after 24 and 36 initial weeks. Antiviral efficacy is assessed by hepatitis B virus (HBV) DNA non-detectability (PCR \<300 copies/ml) by week 104 with CHB.

02

Conditions studied

  • Hepatitis B, Chronic

Keywords

  • Hepatitis B, Chronic, Hepatitis B e Antigen positive, Adults, Telbivudine, Adefovir
03

In context

Hepatitis A

2,709 studies on the registry are indexed under Hepatitis A; 142 are open to participants now.

This study's enrollment of 100 is close to the median of 100 across 1,886 interventional studies indexed under Hepatitis A.

Browse Hepatitis A studies →

Lead sponsor

Novartis Pharmaceuticals is the lead sponsor of 2,673 studies on the registry; 228 are open to participants now.

Of its 576 completed or terminated interventional studies of FDA-regulated products, 431 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All

Eligibility criteria

Inclusion Criteria:

Male or female, at least 18 yrs of age; HBsAg positive, HBeAg positive and anti-HBe negative at the time of screening; Quantifiable serum HBV DNA levels of >105copies/ml; ALT levels any level; Treatment naïve; Baseline liver histology in case of ALT levels within normal limits performed within last 12 months) indicative of chronic hepatitis B changes Metavir score F >2; Willing and able to comply with the study drug regimen and all other study requirements; The patient or guardian is willing and able to explore written informed consent to participate in the study. Exclusion Criteria:

Patient is pregnant or breastfeeding. Women of childbearing potential must have a negative serum beta-human chorionic gonadotropin (HCG) at Screening visit; Patient is of childbearing potential (men and women) and unwilling to use a barrier method of contraception. It is required that a barrier method of contraception be used (i.e. condom with spermicide or diaphragm with spermicide) by patients of childbearing potential (men and women) regardless of whether a hormonal agent also is used as a method of contraception; Patient is co infected with hepatitis C virus (HCV), HIV. Patients will be tested for antibodies to HCV \& HIV in the Screening assessments;Patient has a medical condition that requires prolonged or frequent use of systemic acyclovir or famciclovir; Patient is currently abusing alcohol or illicit drugs, or has a history of alcohol abuse or illicit substance abuse within the preceding two years; Patient has a medical condition that requires frequent or prolonged use of systemic corticosteroids; Patients who has been on warfarin or other anticoagulants during 30 days prior to screening or if expected during the present study; Patient has any other concurrent medical condition, at clinician's discretion, likely to preclude compliance with the schedule of evaluations in the protocol, or likely to confound the efficacy or safety observations of the study Other protocol defined inclusion/exclusion criteria may apply

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
100 participants (actual)

Study arms

  • Active comparator
    1

    Telbivudine

    Drug: Telbivudine

  • Active comparator
    2

    Telbivudine

    Drug: Telbivudine

  • Active comparator
    3

    Telbivudine

    Drug: Telbivudine

Interventions

  • DrugTelbivudine
06

What researchers measure

Primary outcomes

  1. Antiviral efficacy with adefovir combination assessed by HBV DNA non-detectability (PCR <300 copies/ml) by week 104.

Secondary outcomes

  1. Antiviral efficacy with telbivudine alone assessed by HBV DNA non-detectability (PCR <300 copies/ml) at week 24 and 36.

  2. HBeAg loss & HBeAg seroconversion (defined as a loss of HBeAg and a gain of detectable level of HBeAb).

  3. Alanine Transaminase (ALT) normalization, in patients with raised levels at baseline.

  4. Change in HBV DNA level (log10 copies/ml) from baseline to week 4, 8, 12, 24, 36, 52, 76 and 104.

  5. Viral breakthrough, defined as increase of HBV DNA by 1 log10 copies/ml from treatment nadir, at any point after week 24.

07

Study locations

3 sites
  • Novartis Investigative Site
    Hyderabad, India
  • Novartis Investigative Site
    Mumbai, India
  • Novartis Investigative Site
    Vellore, India
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 23, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00537537
Lead sponsor
Novartis Pharmaceuticals
Responsible party
Sponsor
First posted
Oct 1, 2007
Start date
Aug 2007
Primary completion
Jun 2011
Last update
Jun 23, 2017

Study contacts

Novartis
study director · Novartis
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2016. You cannot join it, but the record below documents what was studied.

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