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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/ct2/show/NCT00116805
Registration number
NCT00116805
Ethics application status
Date submitted
30/06/2005
Date registered
1/07/2005
Date last updated
9/03/2017
Titles & IDs
Public title
A Study to Compare Tenofovir Disoproxil Fumarate Versus Adefovir Dipivoxil for the Treatment of HBeAg-Positive Chronic Hepatitis B
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Scientific title
A Randomized, Double-Blind, Controlled Evaluation of Tenofovir DF Versus Adefovir Dipivoxil for the Treatment of HBeAg Positive Chronic Hepatitis B
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Secondary ID [1]
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0
2004-005120-41
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Secondary ID [2]
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GS-US-174-0103
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Chronic Hepatitis B
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Condition category
Condition code
Infection
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Other infectious diseases
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Oral and Gastrointestinal
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0
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - TDF
Treatment: Drugs - ADV
Treatment: Drugs - TDF placebo
Treatment: Drugs - ADV placebo
Treatment: Drugs - FTC/TDF
Experimental: TDF-TDF - TDF plus ADV placebo (double-blind period), followed by TDF (open-label period). Participants may add FTC (as part of emtricitabine/tenofovir disoproxil fumarate (FTC/TDF) FDC tablet) to their treatment regimen in the open-label period.
Active Comparator: ADV-TDF - ADV plus TDF placebo (double-blind period), followed by TDF (open-label period). Participants may add FTC (as part of FTC/TDF FDC tablet) to their treatment regimen in the open-label period.
Treatment: Drugs: TDF
300 mg tablet administered orally once daily
Treatment: Drugs: ADV
10 mg tablet administered orally once daily
Treatment: Drugs: TDF placebo
Tablet administered orally once daily
Treatment: Drugs: ADV placebo
Tablet administered orally once daily
Treatment: Drugs: FTC/TDF
200/300 mg fixed-dose combination (FDC) tablet administered orally once daily
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Percentage of Participants With HBV DNA < 400 Copies/mL and Histological Improvement (2-point Reduction in Knodell Necroinflammatory Score Without Worsening in Knodell Fibrosis Score) at Week 48
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Assessment method [1]
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Complete response was a composite endpoint defined as histological response and HBV DNA < 400 copies/mL. Histological response was based on the Knodell numerical scoring of liver biopsy specimens and defined as at least a 2-point reduction in Knodell necroinflammatory score without worsening in Knodell fibrosis score. The Knodell necroinflammatory score is the combined necrosis and inflammation domain scores and ranges from 0 to 14; the Knodell fibrosis domain score ranges from 0 to 4.
A participant was a nonresponder for the primary endpoint if either biopsy (baseline or end-of-treatment) was missing or if there was not an HBV DNA value available at or beyond Week 40.
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Timepoint [1]
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Baseline; Week 48
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Secondary outcome [1]
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Percentage of Participants With HBV DNA < 400 Copies/mL at Week 48
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Assessment method [1]
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Timepoint [1]
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Week 48
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Secondary outcome [2]
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Percentage of Participants With HBV DNA < 400 Copies/mL at Week 96
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Assessment method [2]
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Timepoint [2]
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Week 96
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Secondary outcome [3]
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Percentage of Participants With HBV DNA < 400 Copies/mL at Weeks 144, 192, 240, 288, 336, and 384
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Assessment method [3]
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Timepoint [3]
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Weeks 144, 192, 240, 288, 336, and 384
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Secondary outcome [4]
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Percentage of Participants With HBV DNA < 400 Copies/mL at Weeks 432 and 480
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Assessment method [4]
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Timepoint [4]
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Weeks 432 and 480
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Secondary outcome [5]
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Change From Baseline in HBV DNA at Weeks 48, 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Assessment method [5]
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Timepoint [5]
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Baseline; Weeks 48, 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Secondary outcome [6]
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Change From Week 48 in HBV DNA at Weeks 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Assessment method [6]
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Timepoint [6]
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Week 48; Weeks 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Secondary outcome [7]
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Percentage of Participants With Histological Response at Week 48
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Assessment method [7]
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Histological response was based on the Knodell numerical scoring of liver biopsy specimens and defined as at least a 2-point reduction in Knodell necroinflammatory score without worsening in Knodell fibrosis score. The Knodell necroinflammatory score is the combined necrosis and inflammation domain scores and ranges from 0 to 14; the Knodell fibrosis domain score ranges from 0 to 4.
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Timepoint [7]
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Baseline; Week 48
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Secondary outcome [8]
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Percentage of Participants With Histological Response at Week 240
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Assessment method [8]
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Histological response was based on the Knodell numerical scoring of liver biopsy specimens and defined as at least a 2-point reduction in Knodell necroinflammatory score without worsening in Knodell fibrosis score. The Knodell necroinflammatory score is the combined necrosis and inflammation domain scores and ranges from 0 to 14; the Knodell fibrosis domain score ranges from 0 to 4.
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Timepoint [8]
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Baseline; Week 240
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Secondary outcome [9]
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Change From Baseline in Knodell and Ishak Necroinflammatory Scores at Week 48
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Assessment method [9]
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The Knodell necroinflammatory score is the combined score for necrosis and inflammation domains of the Knodell scoring system, and ranges from 0 (best) to 14 (worst). The Ishak score measures the degree of liver fibrosis (scarring) caused by chronic necroinflammation (inflammation leading to cell death) and ranges from 0 (best) to 6 (worst).
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Timepoint [9]
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Baseline; Week 48
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Secondary outcome [10]
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Change From Baseline in Knodell and Ishak Necroinflammatory Scores at Week 240
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Assessment method [10]
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The Knodell necroinflammatory score is the combined score for necrosis and inflammation domains of the Knodell scoring system, and ranges from 0 (best) to 14 (worst). The Ishak score measures the degree of liver fibrosis (scarring) caused by chronic necroinflammation (inflammation leading to cell death) and ranges from 0 (best) to 6 (worst).
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Timepoint [10]
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Baseline; Week 240
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Secondary outcome [11]
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Ranked Assessment of Necroinflammation and Fibrosis at Week 48
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Assessment method [11]
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Participants were ranked as having improvement, no change, worsening, or missing data (compared to Baseline) based on the Knodell scoring system, and results are presented as the percentage of participants in each category. The Knodell necroinflammatory score is the combined score for necrosis and inflammation domains of the Knodell scoring system, which ranges from 0 (best) to 14 (worst). The Knodell fibrosis domain score ranges from 0 (best) to 4 (worst). A decrease of 1 point or more indicated improvement, and an increase of 1 point or more indicated worsening.
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Timepoint [11]
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Baseline; Week 48
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Secondary outcome [12]
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Ranked Assessment of Necroinflammation and Fibrosis at Week 240
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Assessment method [12]
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Participants were ranked as having improvement, no change, worsening, or missing data (compared to Baseline) based on the Knodell scoring system, and results are presented as the percentage of participants in each category. The Knodell necroinflammatory score is the combined score for necrosis and inflammation domains of the Knodell scoring system, which ranges from 0 (best) to 14 (worst). The Knodell fibrosis domain score ranges from 0 (best) to 4 (worst). A decrease of 1 point or more indicated improvement, and an increase of 1 point or more indicated worsening.
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Timepoint [12]
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Baseline; Week 240
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Secondary outcome [13]
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Percentage of Participants With Alanine Aminotransferase (ALT) Normalization at Week 48
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Assessment method [13]
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ALT normalization was defined as ALT > upper limit of normal (ULN) at baseline and within the normal range at the end of blinded treatment. The ULN was 43 U/L for males and 34 U/L for females aged 18 to < 69, and 35 U/L for males and 32 U/L for females aged = 69.
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Timepoint [13]
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Baseline; Week 48
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Secondary outcome [14]
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Percentage of Participants With ALT Normalization at Week 96
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Assessment method [14]
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ALT normalization was defined as ALT > ULN at baseline and within the normal range at Week 96. The ULN was 43 U/L for males and 34 U/L for females aged 18 to < 69, and 35 U/L for males and 32 U/L for females aged = 69.
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Timepoint [14]
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Baseline; Week 96
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Secondary outcome [15]
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Percentage of Participants With ALT Normalization at Weeks 144, 192, 240, 288, 336, and 384
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Assessment method [15]
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ALT normalization was defined as ALT > ULN at baseline and within the normal range at the subsequent time point. The ULN was 43 U/L for males and 34 U/L for females aged 18 to < 69, and 35 U/L for males and 32 U/L for females aged = 69.
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Timepoint [15]
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Baseline; Weeks 144, 192, 240, 288, 336, and 384
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Secondary outcome [16]
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Percentage of Participants With ALT Normalization at Weeks 432 and 480
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Assessment method [16]
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ALT normalization was defined as ALT > ULN at baseline and within the normal range at the subsequent time point. The ULN was 43 U/L for males and 34 U/L for females aged 18 to < 69, and 35 U/L for males and 32 U/L for females aged = 69.
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Timepoint [16]
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Baseline; Weeks 432 and 480
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Secondary outcome [17]
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Change From Baseline in ALT at Weeks 48, 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Assessment method [17]
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Timepoint [17]
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Baseline; Weeks 48, 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Secondary outcome [18]
0
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Change From Week 48 in ALT at Weeks 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Assessment method [18]
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Timepoint [18]
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Week 48; Weeks 96, 144, 192, 240, 288, 336, 384, 432, and 480
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Secondary outcome [19]
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Percentage of Participants With Hepatitis B e Antigen (HBeAg) Loss/Seroconversion at Week 48
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Assessment method [19]
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HBeAg loss was defined as HBeAg positive at baseline and HBeAg negative at Week 48. Seroconversion to anti-HBe was defined as change of detectable antibody to HBeAg from negative at baseline to positive at Week 48.
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Timepoint [19]
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Baseline; Week 48
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Secondary outcome [20]
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Percentage of Participants With HBeAg Loss or Seroconversion to Anti-HBe at Week 96
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Assessment method [20]
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HBeAg loss was defined as HBeAg positive at baseline and HBeAg negative at Week 96. Seroconversion to anti-HBe was defined as change of detectable antibody to HBeAg from negative at baseline to positive at Week 96.
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Timepoint [20]
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0
Baseline; Week 96
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Secondary outcome [21]
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Percentage of Participants With Hepatitis B S-Antigen (HBsAg) Loss or Seroconversion at Week 48
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Assessment method [21]
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HBsAg loss was defined as HBsAg positive at baseline and HBsAg negative at Week 48. Seroconversion to anti-HBs was defined as change of detectable antibody to HBsAg from negative at baseline to positive at Week 48.
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Timepoint [21]
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Baseline; Week 48
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Secondary outcome [22]
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Percentage of Participants With HBsAg Loss or Seroconversion to Anti-HBs at Week 96
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Assessment method [22]
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HBsAg loss was defined as HBsAg positive at baseline and HBsAg negative at the subsequent time point. Seroconversion to anti-HBs was defined as change of detectable antibody to HBsAg from negative at baseline to positive at the subsequent time point.
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Timepoint [22]
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Baseline; Week 96
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Secondary outcome [23]
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Percentage of Participants With HBsAg Loss or Seroconversion to Anti-HBs at Weeks 144, 192, 240, 288, 336, 384, 432, and 480
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Assessment method [23]
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HBsAg loss was defined as HBsAg positive at baseline and HBsAg negative at the subsequent time point. Seroconversion to anti-HBs was defined as change of detectable antibody to HBsAg from negative at baseline to positive at the subsequent time point.
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Timepoint [23]
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Baseline; Weeks 144, 192, 240, 288, 336, 384, 432, and 480
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Secondary outcome [24]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 48 (Resistance Surveillance)
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Assessment method [24]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL, those with viral breakthrough, and those who discontinued after Week 24 with HBV DNA = 400 copies/mL.
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Timepoint [24]
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Baseline; Week 48
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Secondary outcome [25]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 96 (Resistance Surveillance)
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Assessment method [25]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 96 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 48 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [25]
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Baseline; Weeks 49 to 96
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Secondary outcome [26]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 144 (Resistance Surveillance)
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Assessment method [26]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 144 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 96 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 96 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [26]
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Baseline; Weeks 97 to 144
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Secondary outcome [27]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 192 (Resistance Surveillance)
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Assessment method [27]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 192 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 144 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 144 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [27]
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Baseline; Weeks 145 to 192
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Secondary outcome [28]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 240 (Resistance Surveillance)
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Assessment method [28]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 240 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 192 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 192 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [28]
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Baseline; Weeks 193 to 240
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Secondary outcome [29]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 288 (Resistance Surveillance)
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Assessment method [29]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 288 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 240 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 240 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [29]
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Baseline; Weeks 241 to 288
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Secondary outcome [30]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 336 (Resistance Surveillance)
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Assessment method [30]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 336 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 288 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 288 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [30]
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0
Baseline; Weeks 289 to 336
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Secondary outcome [31]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 384 (Resistance Surveillance)
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Assessment method [31]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 384 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 336 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 336 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [31]
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0
Baseline; Weeks 337 to 384
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Secondary outcome [32]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 432 (Resistance Surveillance)
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Assessment method [32]
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Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 432 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 384 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 384 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [32]
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0
Baseline; Weeks 385 to 432
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Secondary outcome [33]
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Number of Participants With HBV Genotypic Changes From Baseline at Week 480 (Resistance Surveillance)
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Assessment method [33]
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0
Of the total number analyzed, participants evaluated for resistance included those with HBV DNA = 400 copies/mL at Week 480 on TDF monotherapy, those with viral breakthrough, those who discontinued after Week 432 with HBV DNA = 400 copies/mL, and those who added emtricitabine to the open-label TDF regimen after Week 432 and had HBV DNA = 400 copies/mL at the time of the addition.
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Timepoint [33]
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Baseline; Weeks 433 to 480
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Eligibility
Key inclusion criteria
Key
A patient must meet all of the following inclusion criteria to be eligible for
participation in this study:
- Chronic hepatitis B virus (HBV) infection, defined as positive serum hepatitis B
s-antigen (HBsAg) for more than 6 months
- 18 through 69 years of age, inclusive
- Active hepatitis B e-antigen (HBeAg) positive chronic HBV infection, with all of the
following:
- HBeAg positive at screening
- Alanine aminotransferase (ALT) levels > 2 × ULN and = 10 × the upper limit of the
normal range (ULN)
- Serum HBV DNA > 1 million copies/mL at screening
- creatinine clearance = 70 mL/min
- hemoglobin = 8 g/dL
- neutrophils = 1,000 /mL
- Knodell necroinflammatory score = 3 and a Knodell fibrosis score < 4; however, up to
96 patients with cirrhosis, ie, a Knodell fibrosis score equal to 4, will be eligible
for enrollment
- Negative serum ß-human chorionic gonadotropin (hCG)
- Nucleotide naïve, ie, no prior nucleotide (TDF or ADV) therapy for > 12 weeks
- Nucleoside naïve, ie, no prior nucleoside (any nucleoside) therapy for > 12 weeks
- Willing and able to provide written informed consent
- Liver biopsy performed within 6 months of baseline and has readable biopsy slides or
agrees to have a biopsy performed prior to baseline
Key
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Minimum age
18
Years
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Maximum age
69
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
A patient who meets any of the following exclusion criteria is not to be enrolled in this
study:
- Pregnant women, women who are breast feeding or who believe they may wish to become
pregnant during the course of the study
- Males and females of reproductive potential who are unwilling to use an effective
method of contraception during the study; for males, condoms should be used and for
females, a barrier contraception method should be used
- Decompensated liver disease defined as conjugated bilirubin > 1.5 x ULN, prothrombin
time (PT) > 1.5 x ULN, platelets < 75,000/mL, serum albumin < 3.0 g/dL, or prior
history of clinical hepatic decompensation (eg, ascites, jaundice, encephalopathy,
variceal hemorrhage)
- Received any nucleoside, nucleotide (TDF or ADV) or interferon (pegylated or not)
therapy within 6 months prior to the pre-treatment biopsy
- Evidence of hepatocellular carcinoma (HCC), ie, a-fetoprotein >50 ng/mL
- Coinfection with hepatitis C virus (HCV), human immunodeficiency virus (HIV), or
hepatitis delta virus (HDV)
- Significant renal, cardiovascular, pulmonary, or neurological disease
- Received solid organ or bone marrow transplantation
- Is currently receiving therapy with immunomodulators (eg, corticosteroids, etc.),
investigational agents, nephrotoxic agents, or agents susceptible of modifying renal
excretion
- Has proximal tubulopathy
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/06/2005
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/01/2016
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Sample size
Target
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Accrual to date
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Final
266
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Recruitment in Australia
Recruitment state(s)
NSW,QLD,VIC
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Recruitment hospital [1]
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0
- Camperdown
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Recruitment hospital [2]
0
0
- Concord
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Recruitment hospital [3]
0
0
- Westmead
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Recruitment hospital [4]
0
0
- Woolloongabba
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Recruitment hospital [5]
0
0
- Clayton
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Recruitment hospital [6]
0
0
- Footscray
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Recruitment hospital [7]
0
0
- Parkville
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Recruitment hospital [8]
0
0
- Prahran
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Recruitment hospital [9]
0
0
- Fitzroy
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Recruitment hospital [10]
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- Perth
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Recruitment postcode(s) [1]
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0
2050 - Camperdown
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Recruitment postcode(s) [2]
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0
2139 - Concord
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Recruitment postcode(s) [3]
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0
2145 - Westmead
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Recruitment postcode(s) [4]
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0
4102 - Woolloongabba
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Recruitment postcode(s) [5]
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0
3168 - Clayton
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Recruitment postcode(s) [6]
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0
3011 - Footscray
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Recruitment postcode(s) [7]
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0
3050 - Parkville
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Recruitment postcode(s) [8]
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0
3004 - Prahran
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Recruitment postcode(s) [9]
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0
3065 - Fitzroy
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Recruitment postcode(s) [10]
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0
6000 - Perth
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Recruitment outside Australia
Country [1]
0
0
United States of America
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State/province [1]
0
0
California
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Country [2]
0
0
United States of America
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State/province [2]
0
0
Florida
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Country [3]
0
0
United States of America
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State/province [3]
0
0
Georgia
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Country [4]
0
0
United States of America
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State/province [4]
0
0
Hawaii
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Country [5]
0
0
United States of America
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State/province [5]
0
0
Maryland
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Country [6]
0
0
United States of America
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State/province [6]
0
0
Michigan
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Country [7]
0
0
United States of America
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State/province [7]
0
0
Missouri
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Country [8]
0
0
United States of America
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State/province [8]
0
0
New York
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Country [9]
0
0
United States of America
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State/province [9]
0
0
Virginia
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Country [10]
0
0
United States of America
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State/province [10]
0
0
Washington
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Country [11]
0
0
Bulgaria
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State/province [11]
0
0
Sofia
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Country [12]
0
0
Bulgaria
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State/province [12]
0
0
Varna
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Country [13]
0
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Ontario
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Hradec Kralove
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Prague
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Praha 6- Stresovice
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Lille
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France
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Lyon
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Nancy
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France
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Paris
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Germany
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Essen
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Germany
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Hamburg
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Valencia
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Turkey
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Turkey
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Bursa
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Istanbul
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United Kingdom
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United Kingdom
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Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
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Name
Gilead Sciences
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Summary
Brief summary
The primary objectives of this study are to compare the efficacy, safety, and tolerability of
tenofovir disoproxil fumarate (TDF) versus adefovir dipivoxil (ADV) for the treatment of
HBeAg-positive chronic hepatitis B. Participants will receive TDF or ADV for 48 weeks
(double-blind). After 48 weeks, eligible participants switched to open-label TDF for up to
480 weeks.
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Trial website
https://clinicaltrials.gov/ct2/show/NCT00116805
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Contacts
Principal investigator
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Gilead Study Director
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Gilead Sciences
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Summary Results
For IPD and results data, please see
https://clinicaltrials.gov/ct2/show/NCT00116805
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