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Antiviral Activity of Entecavir in Patients Receiving Liver Transplant Due to Chronic Hepatitis B Virus Infection

Study of the Antiviral Activity of Entecavir in Patients Receiving Liver Transplant Due to Chronic Hepatitis B Virus Infection

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00395018
Enrollment
109
Registered
2006-11-02
Start date
2007-04-30
Completion date
2011-03-31
Last updated
2012-05-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hepatitis B, Chronic

Keywords

Chronic Hepatitis B Virus, Liver Transplant

Brief summary

The purpose of this clinical research study is to learn if the study drug entecavir will prevent the recurrence of hepatitis B virus (HBV) in participants who receive an orthotopic liver transplant (OLT) due to HBV infection.

Interventions

DRUGentecavir

Tablets, Oral, 1 mg, once daily, up to 72 weeks

Sponsors

Bristol-Myers Squibb
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients receiving orthotopic liver transplant (OLT) due to end-stage liver disease because of chronic HBV infection, with HBV-DNA \< 172 IU/mL (approximately \< 1000 copies/mL) prior to liver transplant * Must have detectable hepatitis B surface antigen (HBsAg) at screening and for at least 24 weeks prior to screening

Exclusion criteria

* Patients with hepatocellular carcinoma with evidence of extrahepatic spread, multiple tumors ≥ 6.5 cm in diameter or there is up to three nodules ≥ 4.5 cm in diameter and total tumor diameter is ≥ 8 cm * Co-infection with human immunodeficiency virus (HIV), cytomegalovirus (CMV), Epstein-Barr virus (EBV) or hepatitis C virus (HCV)

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) => 50 IU/mL by Polymerase Chain Reaction (PCR) at Week 72At 72 weeksHBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.
Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72At baseline (day 1), week 12, 24, 36, 48, 60, and 72HBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.

Secondary

MeasureTime frameDescription
Percentage of Participants With HBV DNA < 50 IU/mL (Approximately 300 Copies/mL) by PCR at the End of Post-dosing Follow-upAt 72 weeks + 24 weeks follow-upHBV DNA assessments were to be performed using the Roche COBAS® TaqMan AmpliPrep assay. HBV DNA \< 50 IU/mL = approximately 300 copies/mL.
Percentage of Participants With HBeAg Loss at Week 72 (for HBeAg-positive Participants)At week 72HBeAg is a hepatitis B viral protein. HBeAg loss = HBeAg-negative at the specified analysis week.
Percentage of Participants With HBeAg Seroconversion at Week 72 (for HBeAg-positive Participants)At week 72HBeAg is a hepatitis B viral protein. HBeAg Seroconversion = HBeAg Loss and Presence of Hepatitis B e Antibody (HBeAb).
Percentage of Participants With HBsAg Loss at Week 72At week 72HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBsAg loss = HBsAg-negative at the specified analysis week.
Percentage of Participants With HBsAg Seroconversion at Week 72At week 72HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBs seroconversion is defined as HBsAg loss with positive HBsAb.
Percentage of Participants With HBsAg Recurrence At Week 72At week 72HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBsAg recurrence is defined as having detectable HBsAg among participants who have already experienced loss of HBsAg on-treatment. HBsAg recurrence = HBsAg-positive at the specified analysis week.
Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-upCriteria for hematology abnormalities were: Hemoglobin : \<11.0 g/dL; White Blood Cells : \<4000/mm\^3; Neutrophils : \<1500/mm\^3; Platelets : \< 99,000/mm\^3; International Normalized Ratio (INR) : increase \>= 0.5 from baseline.
Prothrombin Time (PT) at Week 72At week 72Prothrombin, a liver protein, plays an important role in the extrinsic pathway of clotting. Increased prothrombin time indicates abnormal liver functioning. Normal prothrombin time varies from laboratory to laboratory. Generally, normal prothrombin time varies between 10 to 13.2 seconds. Abnormal PT: \> 1.01 x ULN.
Number of Participants With Liver Rejection Through Week 72Through week 72
Number of Participants With Re-transplantation Through Week 72Through week 72
Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-upAE: 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 an overdose. Toxicity grading by modified WHO grade system. Grade (GR) 2=moderate; GR3=severe; GR4=very severe. OT=from start of dosing to end of dosing+5 days; OF=from end of dosing+6 days to start of other anti-HBV therapy or end of follow-up.
Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-upNormal ranges are local lab data and vary according to the site. Criteria for laboratory abnormalities:ALT:\>1.25xULN;AST:\>1.25xULN;ALP:\>1.25xULN;Total Bilirubin:\>1.1xULN;Serum Lipase:\>1.10xULN;Creatinine:\>1.1xULN;Blood Urea Nitrogen:\>1.25xULN;Hyperglycemia:\>116mg/dL;Hypoglycemia:\<64mg/dL;Hyponatremia:\<132meq/L;Hypernatremia:\>148meq/L;Hypokalemia:\<3.4meq/L;hyperkalemia:\>5.6meq/L;Hypochloremia:\<93meq/L;Hyperchloremia:\>113meq/L;Albumin: Decrease \>= 1g/dL from baseline and \< 3 g/dL. HYPER=value\>ULN(upper limit of normal). HYPO=value\<LLN (lower limit of normal).
Total Bilirubin at Week 72At week 72Bilirubin measures are used to diagnose or monitor liver functioning or diseases that include hepatitis. Viral hepatitis is one of the condition in which bilirubin levels are elevated. Normal range varies from laboratory to laboratory. Bilirubin abnormality : =\> 1.1 x ULN mg/dL.
Distribution of ALT Levels Through 72 Weeks: OverallOn Day 1 (baseline) and at week 4, 12, 24, 36, 48, 60, 72ALT is an enzyme present in serum and various tissues of the body, associated commonly with the liver. Elevated levels of ALT often suggests existence of medical problems which includes viral hepatitis. Normal range varies from laboratory to laboratory. Values of 5-60 U/L is usually considered normal. ALT abnormality = \>1.25 x ULN (upper limit of normal).

Countries

Argentina, Australia, Brazil, France, Italy, South Korea, Spain, Taiwan, United States

Participant flow

Recruitment details

A total of 109 participants were enrolled at 27 investigative sites.

Pre-assignment details

Of the 109 participants enrolled, 65 were treated and 61 received therapy for at least 1 month. Of the 44 participants who were never treated, 23 no longer met study criteria, 9 due to administrative reason by sponsor, 6 withdrew consent, 3 due to other reasons, 2 died, 1 due to poor/non-compliance.

Participants by arm

ArmCount
Entecavir (ETV)
ETV tablets, Oral, 1.0 mg, once daily, up to 72 weeks
65
Total65

Withdrawals & dropouts

PeriodReasonFG000
Off-Treatment Follow-upFollowup no longer required per protocol1
Off-Treatment Follow-upLost to Follow-up2
Off-Treatment Follow-upPoor/non-compliance1
On-TreatmentDeath4
On-TreatmentOther Reason2
On-TreatmentPoor/non-compliance2
On-TreatmentSubject no longer meets study criteria2

Baseline characteristics

CharacteristicEntecavir (ETV)
Age Continuous51.0 years
Age, Customized
21-64 years
60 participants
Age, Customized
>=65 years
5 participants
Alanine Aminotransferase (ALT)43 U/L
Albumin3.0 g/dL
HBV DNA by PCR0.8 log10 IU/mL
Hepatitis B E Antibody (HBeAb)
Negative
17 participants
Hepatitis B E Antibody (HBeAb)
Positive
48 participants
Hepatitis B E Antigen (HBeAg)
Negative
58 participants
Hepatitis B E Antigen (HBeAg)
Positive
7 participants
Hepatitis B Surface Antigen
Negative
4 participants
Hepatitis B Surface Antigen
Positive
61 participants
International Normalized Ratio1.51 ratio
Race/Ethnicity, Customized
Asian
24 participants
Race/Ethnicity, Customized
Black/African American
7 participants
Race/Ethnicity, Customized
Hispanic/Latino
0 participants
Race/Ethnicity, Customized
Native Hawaiian/Other Pacific Islander
1 participants
Race/Ethnicity, Customized
Not Hispanic/Latino
14 participants
Race/Ethnicity, Customized
Other
8 participants
Race/Ethnicity, Customized
White
25 participants
Region of Enrollment
Argentina
2 participants
Region of Enrollment
Australia
5 participants
Region of Enrollment
Brazil
12 participants
Region of Enrollment
France
12 participants
Region of Enrollment
Italy
6 participants
Region of Enrollment
Korea, Republic of
7 participants
Region of Enrollment
Spain
3 participants
Region of Enrollment
Taiwan
4 participants
Region of Enrollment
United States
14 participants
Sex: Female, Male
Female
12 Participants
Sex: Female, Male
Male
53 Participants
Total Bilirubin2.4 mg/dL

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
58 / 65
serious
Total, serious adverse events
36 / 65

Outcome results

Primary

Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72

HBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.

Time frame: At baseline (day 1), week 12, 24, 36, 48, 60, and 72

Population: Evaluable population: Treated participants who received at least 1 month of ETV therapy. Non-Completer = Missing (NC = M) approach was used where participants who discontinued early or were missing the measurement were excluded from the specific analysis.

ArmMeasureGroupValue (NUMBER)
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 36 (n = 10)0 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 48 (n = 49)0 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 60 (n = 48)0 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 72 (n = 49)0 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Baseline3 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 12 (n = 54)0 participants
Entecavir (ETV)Number of Participants With HBV DNA by PCR >= 50 IU/mL Through Week 72Week 24 (n = 58)0 participants
Primary

Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) => 50 IU/mL by Polymerase Chain Reaction (PCR) at Week 72

HBV DNA assessments were performed using the Roche COBAS® TaqMan High+Pure system (HPS) assay. HBV DNA =\> 50 IU/mL = approximately =\> 300 copies/mL.

Time frame: At 72 weeks

Population: Evaluable population: Treated participants who received at least 1 month of ETV therapy. Last observation carried forward (LOCF) approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) => 50 IU/mL by Polymerase Chain Reaction (PCR) at Week 720 percentage of participants
Secondary

Distribution of ALT Levels Through 72 Weeks: Overall

ALT is an enzyme present in serum and various tissues of the body, associated commonly with the liver. Elevated levels of ALT often suggests existence of medical problems which includes viral hepatitis. Normal range varies from laboratory to laboratory. Values of 5-60 U/L is usually considered normal. ALT abnormality = \>1.25 x ULN (upper limit of normal).

Time frame: On Day 1 (baseline) and at week 4, 12, 24, 36, 48, 60, 72

Population: Evaluable population: Treated participants who received at least 1 month of ETV therapy.

ArmMeasureGroupValue (MEAN)Dispersion
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 36 (n=58)41.2 U/LStandard Error 8.2
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 48 (n=57)24.9 U/LStandard Error 1.91
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 60 (n=53)30.6 U/LStandard Error 4.04
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallBaseline158.7 U/LStandard Error 36.2
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 461.2 U/LStandard Error 10.12
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 1228.4 U/LStandard Error 2.66
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 24 (n=59)28.4 U/LStandard Error 3.37
Entecavir (ETV)Distribution of ALT Levels Through 72 Weeks: OverallWeek 72 (n=54)26.9 U/LStandard Error 2.81
Secondary

Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)

Criteria for hematology abnormalities were: Hemoglobin : \<11.0 g/dL; White Blood Cells : \<4000/mm\^3; Neutrophils : \<1500/mm\^3; Platelets : \< 99,000/mm\^3; International Normalized Ratio (INR) : increase \>= 0.5 from baseline.

Time frame: OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-up

Population: Treated population: All subjects who received atleast 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)HEMOGLOBIN-OT56 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)HEMOGLOBIN-OF (n=5)1 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)WHITE BLOOD CELLS-OT50 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)WHITE BLOOD CELLS-OF (n=5)2 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)NEUTROPHILS (Includes absolute bands)-OT24 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)NEUTROPHILS (Includes absolute bands)-OF (n=5)1 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)PLATELETS-OT40 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)PLATELETS-OF (n=5)2 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)INR-OT (n=63)30 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment Follow-up(OF): Hematology (All Grades)INR-OF (n=4)0 participants
Secondary

Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)

Normal ranges are local lab data and vary according to the site. Criteria for laboratory abnormalities:ALT:\>1.25xULN;AST:\>1.25xULN;ALP:\>1.25xULN;Total Bilirubin:\>1.1xULN;Serum Lipase:\>1.10xULN;Creatinine:\>1.1xULN;Blood Urea Nitrogen:\>1.25xULN;Hyperglycemia:\>116mg/dL;Hypoglycemia:\<64mg/dL;Hyponatremia:\<132meq/L;Hypernatremia:\>148meq/L;Hypokalemia:\<3.4meq/L;hyperkalemia:\>5.6meq/L;Hypochloremia:\<93meq/L;Hyperchloremia:\>113meq/L;Albumin: Decrease \>= 1g/dL from baseline and \< 3 g/dL. HYPER=value\>ULN(upper limit of normal). HYPO=value\<LLN (lower limit of normal).

Time frame: OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-up

Population: Treated population: Participants who received atleast 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALANINE AMINOTRANSFERASE (ALT)-OT54 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)AST-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALKALINE PHOSPHATASE (ALP)-OT34 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERNATREMIA-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPONATREMIA-OT14 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOKALEMIA-OT22 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALT-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ASPARTATE AMINOTRANSFERASE (AST)-OT56 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALP-OF (n=4)1 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALBUMIN-OT (n=64)51 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)ALBUMIN-OF (n=3)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)TOTAL BILIRUBIN-OT57 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)TOTAL BILIRUBIN-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)SERUM LIPASE-OT (n=64)37 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)SERUM LIPASE-OF (n=3)1 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)CREATININE-OT43 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)CREATININE-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)BLOOD UREA NITROGEN-OT43 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)BLOOD UREA NITROGEN-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERGLYCEMIA-OT (n=64)52 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERGLYCEMIA-OF (n=3)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOGLYCEMIA-OT (n=64)15 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOGLYCEMIA-OF (n=3)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERNATREMIA-OT7 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPONATREMIA-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERKALEMIA-OT15 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERKALEMIA-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOKALEMIA-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERCHLOREMIA-OT11 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPERCHLOREMIA-OF (n=4)0 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOCHLOREMIA-OT7 participants
Entecavir (ETV)Number of Participants With Laboratory Abnormalities On-treatment (OT) and Off-Treatment (OF) Follow-up: Serum Chemistry (All Grades)HYPOCHLOREMIA-OF (n=4)0 participants
Secondary

Number of Participants With Liver Rejection Through Week 72

Time frame: Through week 72

Population: Treated participants: Participants who received atleast 1 dose of study drug.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Number of Participants With Liver Rejection Through Week 7218 participants
Secondary

Number of Participants With Re-transplantation Through Week 72

Time frame: Through week 72

Population: Treated population: Participants who received atleast 1 dose of study drug.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Number of Participants With Re-transplantation Through Week 723 participants
Secondary

Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])

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 an overdose. Toxicity grading by modified WHO grade system. Grade (GR) 2=moderate; GR3=severe; GR4=very severe. OT=from start of dosing to end of dosing+5 days; OF=from end of dosing+6 days to start of other anti-HBV therapy or end of follow-up.

Time frame: OT:From start of dosing through Week 72 + 5 days; OF:End of OT through 24-weeks follow-up

Population: Treated population: Participants who received atleast 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Death-OT4 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])SAEs-OT36 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])SAEs-OF (n=5)0 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Discontinuation due to AEs-OT0 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Any AE-OT62 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Any AE-OF (n=5)0 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Related AEs-OT11 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Grade 2 - 4 related AEs-OT8 participants
Entecavir (ETV)Participants With Adverse Events (AE), Serious Adverse Events (SAE), and Discontinuations From Study Drug Due to AEs (On-treatment [OT] and Off-treatment Follow-up [OF])Grade 3 - 4 AEs-OT30 participants
Secondary

Percentage of Participants With HBeAg Loss at Week 72 (for HBeAg-positive Participants)

HBeAg is a hepatitis B viral protein. HBeAg loss = HBeAg-negative at the specified analysis week.

Time frame: At week 72

Population: HBeAg positive participants at baseline who received at least 1 month of ETV therapy. LOCF approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBeAg Loss at Week 72 (for HBeAg-positive Participants)100 percentage of participants
Secondary

Percentage of Participants With HBeAg Seroconversion at Week 72 (for HBeAg-positive Participants)

HBeAg is a hepatitis B viral protein. HBeAg Seroconversion = HBeAg Loss and Presence of Hepatitis B e Antibody (HBeAb).

Time frame: At week 72

Population: HBeAg-positive participants at baseline who received at least 1 month of ETV therapy. LOCF approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBeAg Seroconversion at Week 72 (for HBeAg-positive Participants)0 percentage of participants
Secondary

Percentage of Participants With HBsAg Loss at Week 72

HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBsAg loss = HBsAg-negative at the specified analysis week.

Time frame: At week 72

Population: Evaluable participants: Treated participants who received at least 1 month of ETV therapy. LOCF approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBsAg Loss at Week 7296.7 percentage of participants
Secondary

Percentage of Participants With HBsAg Recurrence At Week 72

HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBsAg recurrence is defined as having detectable HBsAg among participants who have already experienced loss of HBsAg on-treatment. HBsAg recurrence = HBsAg-positive at the specified analysis week.

Time frame: At week 72

Population: Evaluable participants: Treated participants who received at least 1 month of ETV therapy. LOCF approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBsAg Recurrence At Week 723.3 percentage of participants
Secondary

Percentage of Participants With HBsAg Seroconversion at Week 72

HBsAg = a part of the hepatitis B virus that, when in the blood, is an early marker of infection. HBs seroconversion is defined as HBsAg loss with positive HBsAb.

Time frame: At week 72

Population: Evaluable participants: Treated participants who received at least 1 month of ETV therapy. LOCF approach was used for participants with no measurement in the specified visit window.

ArmMeasureValue (NUMBER)
Entecavir (ETV)Percentage of Participants With HBsAg Seroconversion at Week 7280.3 percentage of participants
Secondary

Percentage of Participants With HBV DNA < 50 IU/mL (Approximately 300 Copies/mL) by PCR at the End of Post-dosing Follow-up

HBV DNA assessments were to be performed using the Roche COBAS® TaqMan AmpliPrep assay. HBV DNA \< 50 IU/mL = approximately 300 copies/mL.

Time frame: At 72 weeks + 24 weeks follow-up

Population: This analysis was planned if \> 10% of treated participants had HBV DNA measurements during the off-treatment follow-up period.

Secondary

Prothrombin Time (PT) at Week 72

Prothrombin, a liver protein, plays an important role in the extrinsic pathway of clotting. Increased prothrombin time indicates abnormal liver functioning. Normal prothrombin time varies from laboratory to laboratory. Generally, normal prothrombin time varies between 10 to 13.2 seconds. Abnormal PT: \> 1.01 x ULN.

Time frame: At week 72

Population: Treated participants with measures available at week 72.

ArmMeasureValue (MEAN)Dispersion
Entecavir (ETV)Prothrombin Time (PT) at Week 7213.32 secondsStandard Error 0.305
Secondary

Total Bilirubin at Week 72

Bilirubin measures are used to diagnose or monitor liver functioning or diseases that include hepatitis. Viral hepatitis is one of the condition in which bilirubin levels are elevated. Normal range varies from laboratory to laboratory. Bilirubin abnormality : =\> 1.1 x ULN mg/dL.

Time frame: At week 72

Population: Treated participants with measures available at week 72.

ArmMeasureValue (MEAN)Dispersion
Entecavir (ETV)Total Bilirubin at Week 720.79 mg/dLStandard Error 0.079

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026