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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00537537
Recruitment Status : Completed
First Posted : October 1, 2007
Last Update Posted : June 23, 2017
Information provided by (Responsible Party):
Novartis ( Novartis Pharmaceuticals )

Brief 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.

Condition or disease Intervention/treatment Phase
Hepatitis B, Chronic Drug: Telbivudine Phase 4

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 100 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open Label, Response Adaptive Study of Telbivudine in Adults With HBeAg Positive Compensated CHB
Study Start Date : August 2007
Actual Primary Completion Date : June 2011

Resource links provided by the National Library of Medicine

Drug Information available for: Telbivudine

Arm Intervention/treatment
Active Comparator: 1
Drug: Telbivudine
Active Comparator: 2
Drug: Telbivudine
Active Comparator: 3
Drug: Telbivudine

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

Secondary Outcome Measures :
  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.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All

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

Information from the National Library of Medicine

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 identifier (NCT number): NCT00537537

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Novartis Investigative Site
Hyderabad, India
Novartis Investigative Site
Mumbai, India
Novartis Investigative Site
Vellore, India
Sponsors and Collaborators
Novartis Pharmaceuticals
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Study Director: Novartis Novartis
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Responsible Party: Novartis Pharmaceuticals Identifier: NCT00537537    
Other Study ID Numbers: CLDT600AIN01
First Posted: October 1, 2007    Key Record Dates
Last Update Posted: June 23, 2017
Last Verified: April 2016
Keywords provided by Novartis ( Novartis Pharmaceuticals ):
Hepatitis B, Chronic, Hepatitis B e Antigen positive, Adults, Telbivudine, Adefovir
Additional relevant MeSH terms:
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Hepatitis A
Hepatitis B
Hepatitis B, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Hepadnaviridae Infections
DNA Virus Infections
Hepatitis, Chronic
Antiviral Agents
Anti-Infective Agents
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action