Trial Outcomes & Findings for A Study of Entecavir in Pediatric Patients With Chronic Hepatitis B Virus (HBV)-Infection (NCT NCT00423891)

NCT ID: NCT00423891

Last Updated: 2018-05-02

Results Overview

AE=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Medical Dictionary for Regulatory Activities (MedDRA) version 16.0 was used.

Recruitment status

COMPLETED

Study phase

PHASE1/PHASE2

Target enrollment

64 participants

Primary outcome timeframe

Day 1 to Week 120

Results posted on

2018-05-02

Participant Flow

64 enrolled. 48 treated. Participants received a minimum of 48 weeks study drug but depending on response to drug, could remain on treatment for up to a total of 120 weeks. Participants were to receive post dosing follow up after last dose, for a total of 5 years on-study (on and off study drug).

Participant milestones

Participant milestones
Measure
Lamivudine (LVD)-Naive (Group A)
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Enrolled
STARTED
35
21
8
Enrolled
COMPLETED
24
19
5
Enrolled
NOT COMPLETED
11
2
3
Treatment
STARTED
24
19
5
Treatment
COMPLETED
22
19
5
Treatment
NOT COMPLETED
2
0
0
Post-Dosing Follow Up
STARTED
22
18
5
Post-Dosing Follow Up
COMPLETED
20
15
3
Post-Dosing Follow Up
NOT COMPLETED
2
3
2

Reasons for withdrawal

Reasons for withdrawal
Measure
Lamivudine (LVD)-Naive (Group A)
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Enrolled
Withdrawal by Subject
0
0
1
Enrolled
Lost to Follow-up
0
0
1
Enrolled
No longer met criteria
11
2
1
Treatment
Withdrawal by Subject
1
0
0
Treatment
Lost to Follow-up
1
0
0
Post-Dosing Follow Up
Withdrawal by Subject
0
3
2
Post-Dosing Follow Up
Lost to Follow-up
2
0
0

Baseline Characteristics

A Study of Entecavir in Pediatric Patients With Chronic Hepatitis B Virus (HBV)-Infection

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Total
n=48 Participants
Total of all reporting groups
Age, Continuous
9.2 years
STANDARD_DEVIATION 5.41 • n=5 Participants
11.0 years
STANDARD_DEVIATION 4.42 • n=7 Participants
8.8 years
STANDARD_DEVIATION 5.02 • n=5 Participants
9.9 years
STANDARD_DEVIATION 4.98 • n=4 Participants
Age, Customized
≥ 2 years to ≤ 6 years
7 participants
n=5 Participants
3 participants
n=7 Participants
2 participants
n=5 Participants
12 participants
n=4 Participants
Age, Customized
>6 years to ≤ 12 years
9 participants
n=5 Participants
7 participants
n=7 Participants
2 participants
n=5 Participants
18 participants
n=4 Participants
Age, Customized
>12 years to ≤18 years
8 participants
n=5 Participants
9 participants
n=7 Participants
1 participants
n=5 Participants
18 participants
n=4 Participants
Sex: Female, Male
Female
14 Participants
n=5 Participants
7 Participants
n=7 Participants
2 Participants
n=5 Participants
23 Participants
n=4 Participants
Sex: Female, Male
Male
10 Participants
n=5 Participants
12 Participants
n=7 Participants
3 Participants
n=5 Participants
25 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
17 Participants
n=5 Participants
10 Participants
n=7 Participants
5 Participants
n=5 Participants
32 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
2 Participants
n=7 Participants
0 Participants
n=5 Participants
2 Participants
n=4 Participants
Race (NIH/OMB)
White
5 Participants
n=5 Participants
6 Participants
n=7 Participants
0 Participants
n=5 Participants
11 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
Region of Enrollment
United States
10 participants
n=5 Participants
5 participants
n=7 Participants
1 participants
n=5 Participants
16 participants
n=4 Participants
Region of Enrollment
Taiwan
3 participants
n=5 Participants
0 participants
n=7 Participants
0 participants
n=5 Participants
3 participants
n=4 Participants
Region of Enrollment
Canada
1 participants
n=5 Participants
0 participants
n=7 Participants
0 participants
n=5 Participants
1 participants
n=4 Participants
Region of Enrollment
Argentina
3 participants
n=5 Participants
0 participants
n=7 Participants
0 participants
n=5 Participants
3 participants
n=4 Participants
Region of Enrollment
Belgium
1 participants
n=5 Participants
1 participants
n=7 Participants
0 participants
n=5 Participants
2 participants
n=4 Participants
Region of Enrollment
Brazil
1 participants
n=5 Participants
3 participants
n=7 Participants
0 participants
n=5 Participants
4 participants
n=4 Participants
Region of Enrollment
United Kingdom
2 participants
n=5 Participants
1 participants
n=7 Participants
0 participants
n=5 Participants
3 participants
n=4 Participants
Region of Enrollment
Korea, Republic of
3 participants
n=5 Participants
9 participants
n=7 Participants
4 participants
n=5 Participants
16 participants
n=4 Participants
Hepatitis B virus (HBV) deoxyribonucleic acid (DNA)
7.92 log10 IU/mL
STANDARD_DEVIATION 0.864 • n=5 Participants
7.74 log10 IU/mL
STANDARD_DEVIATION 0.856 • n=7 Participants
7.96 log10 IU/mL
STANDARD_DEVIATION 0.238 • n=5 Participants
7.85 log10 IU/mL
STANDARD_DEVIATION 0.812 • n=4 Participants
Alanine Aminotransferase (ALT)
142.8 U/L
STANDARD_DEVIATION 85.18 • n=5 Participants
125.7 U/L
STANDARD_DEVIATION 67.96 • n=7 Participants
44.6 U/L
STANDARD_DEVIATION 22.96 • n=5 Participants
125.8 U/L
STANDARD_DEVIATION 78.83 • n=4 Participants

PRIMARY outcome

Timeframe: Day 1 to Week 120

Population: All participants who received at least one dose of study drug. On-treatment period began on the first day of study therapy and ended 5 days after the last dose of study therapy.

AE=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Medical Dictionary for Regulatory Activities (MedDRA) version 16.0 was used.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Serious Adverse Events (SAE) and Discontinuations Due to Adverse Events (AEs) - On Treatment
Serious Adverse Events (n=24, 19, 5)
2 participants
0 participants
0 participants
Number of Participants With Serious Adverse Events (SAE) and Discontinuations Due to Adverse Events (AEs) - On Treatment
Discontinuations Due to AEs (n=24,19,5)
0 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: Day 14

Population: Participants in Groups A and B who received study drug and had PK assessment.

Cmax and Cmin were derived from plasma concentration of ETV versus time and measured in nanograms per milliliters (ng/mL). Blood samples were obtained before study drug administration and at 0.5, 1, 2, 4, 8, and 24 hours after study drug administration on Day 14 (+/- 4 days) for the PK assessment. Plasma samples were analyzed for ETV with a validated method using liquid chromatography-tandem mass spectrometry detection. Note: PK parameters were summarized for only Groups A and B. PK assessment was optional for Group C participants (NA-experienced participants who were included with the September 2011 country-specific protocol amendment). No Group C participants chose to participate in the PK assessment.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmax of ETV (≥ 2 yrs to ≤ 6 yrs), (n=7, 3)
8.07 ng/mL
Geometric Coefficient of Variation 24
16.03 ng/mL
Geometric Coefficient of Variation 8
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmax of ETV (> 6 yrs to ≤ 12 yrs), (n=9, 7)
6.29 ng/mL
Geometric Coefficient of Variation 25
19.01 ng/mL
Geometric Coefficient of Variation 15
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmax of ETV (> 12 yrs to ≤ 18 yrs), (n=8,9)
5.11 ng/mL
Geometric Coefficient of Variation 27
11.32 ng/mL
Geometric Coefficient of Variation 37
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmin of ETV (≥ 2 yrs to ≤ 6 yrs), (n=7, 3)
0.244 ng/mL
Geometric Coefficient of Variation 32
0.468 ng/mL
Geometric Coefficient of Variation 17
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmin of ETV (> 6 yrs to ≤ 12 yrs), (n=9, 7)
0.320 ng/mL
Geometric Coefficient of Variation 22
0.497 ng/mL
Geometric Coefficient of Variation 32
Mean Maximum Observed Plasma Concentration (Cmax) and Mean Trough Observed Plasma Concentration (Cmin) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
Cmin of ETV (> 12 yrs to ≤ 18 yrs), (n=8,9)
0.271 ng/mL
Geometric Coefficient of Variation 25
0.455 ng/mL
Geometric Coefficient of Variation 25

SECONDARY outcome

Timeframe: Day 14

Population: Participants in Groups A and B who received study drug and had PK assessment.

Tmax was derived from plasma concentration of ETV versus time and measured in hours (h). Blood samples were obtained before study drug administration and at 0.5, 1, 2, 4, 8, and 24 hours after study drug administration on Day 14 (+/- 4 days) for the PK assessment. Plasma samples were analyzed for ETV with a validated method using liquid chromatography-tandem mass spectrometry detection. Age categories presented below: participants age as of first day of dosing. PK assessment was optional for Group C participants (NA-experienced participants who were included with the September 2011 country-specific protocol amendment). No Group C participants chose to participate in the PK assessment.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Median Time of Maximum Observed Plasma Concentration (Tmax) in LVD-naive and LVD-experienced Participants, by Age Cohort
Tmax of ETV (≥ 2 yrs to ≤ 6 yrs), (n=7, 3)
0.50 h
Interval 0.5 to 1.0
1.00 h
Interval 0.5 to 1.5
Median Time of Maximum Observed Plasma Concentration (Tmax) in LVD-naive and LVD-experienced Participants, by Age Cohort
Tmax of ETV (> 6 yrs to ≤ 12 yrs), (n=9, 7)
0.57 h
Interval 0.5 to 2.0
0.72 h
Interval 0.5 to 1.0
Median Time of Maximum Observed Plasma Concentration (Tmax) in LVD-naive and LVD-experienced Participants, by Age Cohort
Tmax of ETV (> 12 yrs to ≤ 18 yrs), (n=8,9)
0.78 h
Interval 0.5 to 1.0
0.52 h
Interval 0.5 to 1.0

SECONDARY outcome

Timeframe: Day 14

Population: Participants in Groups A and B who received study drug and had PK assessment.

Area under the Curve (AUC) was derived from plasma concentration of ETV versus time. AUC(TAU) was calculated by log- and linear trapezoidal summations, TAU = 24 hours, and was measured in nanograms\*hours per milliliter (ng\*h/mL). Blood samples were obtained before study drug administration and at 0.5, 1, 2, 4, 8, and 24 hours after study drug administration on Day 14 (+/- 4 days) for the PK assessment. Plasma samples were analyzed for ETV with a validated method using liquid chromatography-tandem mass spectrometry detection. PK assessment was optional for Group C participants (NA-experienced participants who were included with the September 2011 country-specific protocol amendment). No Group C participants chose to participate in the PK assessment.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Mean Area Under the Concentration-Time Curve in One Dosing Interval [AUC(TAU)] of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
AUC(TAU) of ETV (> 12 yrs to ≤ 18 yrs), (n=8,9)
15.96 ng*h/mL
Geometric Coefficient of Variation 22
35.36 ng*h/mL
Geometric Coefficient of Variation 24
Mean Area Under the Concentration-Time Curve in One Dosing Interval [AUC(TAU)] of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
AUC(TAU) of ETV (≥ 2 yrs to ≤ 6 yrs), (n=7, 3)
18.69 ng*h/mL
Geometric Coefficient of Variation 21
42.26 ng*h/mL
Geometric Coefficient of Variation 27
Mean Area Under the Concentration-Time Curve in One Dosing Interval [AUC(TAU)] of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
AUC(TAU) of ETV (> 6 yrs to ≤ 12 yrs), (n=9, 7)
20.42 ng*h/mL
Geometric Coefficient of Variation 20
41.50 ng*h/mL
Geometric Coefficient of Variation 21

SECONDARY outcome

Timeframe: At 2 weeks

Population: Participants in Groups A and B who received study drug and had PK assessment.

CLT/F was calculated by dividing the dose of ETV by AUC(TAU) of ETV and was measured in liters per hour (L/h). Blood samples were obtained before study drug administration and at 0.5, 1, 2, 4, 8, and 24 hours after study drug administration on Day 14 (+/- 4 days) for the PK assessment. Plasma samples were analyzed for ETV with a validated method using liquid chromatography-tandem mass spectrometry detection. PK assessment was optional for Group C participants (NA-experienced participants who were included with the September 2011 country-specific protocol amendment). No Group C participants chose to participate in the PK assessment.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Mean Apparent Total Body Clearance (CLT/F) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
CLT/F of ETV (> 6 yrs to ≤ 12 yrs), (n=9, 7)
22.66 L/h
Standard Deviation 6.134
21.67 L/h
Standard Deviation 6.940
Mean Apparent Total Body Clearance (CLT/F) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
CLT/F of ETV (> 12 yrs to ≤ 18 yrs), (n=8,9)
31.92 L/h
Standard Deviation 6.429
28.95 L/h
Standard Deviation 6.496
Mean Apparent Total Body Clearance (CLT/F) of Entecavir in LVD-naive and LVD-experienced Participants, by Age Cohort
CLT/F of ETV (≥ 2 yrs to ≤ 6 yrs), (n=7, 3)
11.40 L/h
Standard Deviation 2.564
12.31 L/h
Standard Deviation 3.102

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by polymerase chain reaction (PCR) was measured using the Roche COBAS TaqMan - high pure system (HPS) assay and was reported in international units per milliliter (IU/mL). Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 12
1 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 24
10 participants
3 participants
0 participants
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 36
11 participants
6 participants
0 participants
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 48
14 participants
9 participants
0 participants
Number of Participants With HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 96
8 participants
11 participants
2 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

HBeAg loss: HBeAg negative. The method used for the detection of HBe Ag was the DiaSorin - Anti HBe enzyme immunoassay kit. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Week 12
3 participants
0 participants
0 participants
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Week 24
4 participants
1 participants
0 participants
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Week 36
5 participants
1 participants
0 participants
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Week 48
10 participants
3 participants
0 participants
Number of Participants With Hepatitis B e Antigen (HBeAg) Loss Through Week 96 in Treated Participants
Week 96
5 participants
2 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

HBsAg loss: HBsAg negative. The method used for detection of HBsAg was the ADVIA Centaur iImmunoassay system. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Week 24
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Week 36
1 participants
0 participants
0 participants
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Week 96
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B s Antigen (HBsAg) Loss Through Week 96 in Treated Participants
Week 48
1 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: Baseline through Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

HBe seroconversion: loss of HBeAg (HBeAg negative) with positive HB e antibodies (HBeAb), ie both the presence of HBeAb and the absence of HBeAg. The method used for the detection HBeAg seroconversion was the DiaSorin - Anti HBe enzyme immunoassay kit. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Week 24
4 participants
1 participants
0 participants
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Week 36
5 participants
1 participants
0 participants
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Week 96
5 participants
1 participants
0 participants
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Week 12
3 participants
0 participants
0 participants
Number of Participants With Hepatitis B e Antigen Seroconversion Through Week 96 in Treated Participants
Week 48
10 participants
3 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. LLD = 6 IU/mL). Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Week 12
1 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Week 24
6 participants
1 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Week 36
7 participants
5 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Week 48
13 participants
6 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Detection (LLD) for the Roche COBAS TaqMan - HPS Assay at Week 96 in Treated Participants
Week 96
8 participants
8 participants
1 participants

SECONDARY outcome

Timeframe: Baseline through Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. LLQ = 29 IU/mL. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Week 12
1 participants
0 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Week 24
9 participants
2 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Week 36
10 participants
5 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Week 48
14 participants
7 participants
0 participants
Number of Participants With HBV DNA Less Than Lower Limit of Quantification (LLQ) for the Roche COBAS TaqMan - HPS Assay Through Week 96 in Treated Participants
Week 96
8 participants
8 participants
2 participants

SECONDARY outcome

Timeframe: Baseline through Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

HB s Ag seroconversion: loss of HBsAg (HBsAg negative) and presence of HB s antibodies (HBsAb). The method used for the detection of HBsAg seroconversion was the ADVIA Centaur iImmunoassay system. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Week 24
0 participants
0 participants
0 participants
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Week 36
0 participants
0 participants
0 participants
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Week 48
0 participants
0 participants
0 participants
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Week 96
0 participants
0 participants
0 participants
Number of Participants With HB s Antigen (HBsAg) Seroconversion Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

PDR was defined as confirmed HBV DNA \< 50 IU/mL plus confirmed HBeAg seroconversion on 2 sequential measurements at least 14 days apart. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants Who Had a Protocol Defined Response (PDR) Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants
Number of Participants Who Had a Protocol Defined Response (PDR) Through Week 96 in Treated Participants
Week 24
4 participants
0 participants
0 participants
Number of Participants Who Had a Protocol Defined Response (PDR) Through Week 96 in Treated Participants
Week 36
4 participants
1 participants
0 participants
Number of Participants Who Had a Protocol Defined Response (PDR) Through Week 96 in Treated Participants
Week 96
3 participants
1 participants
0 participants
Number of Participants Who Had a Protocol Defined Response (PDR) Through Week 96 in Treated Participants
Week 48
7 participants
3 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: Participants who received at least one dose of study drug, and had a measurement at baseline and at the specific analysis week.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. HBV DNA log10 changes from baseline were summarized over time.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Mean Log10 Change From Baseline in HBV DNA Using Roche COBAS TaqMan - HPS Through Week 96 in Treated Participants
Week 12
-4.45 IU/mL
Standard Error 0.2418
-3.89 IU/mL
Standard Error 0.1592
-3.80 IU/mL
Standard Error 0.4657
Mean Log10 Change From Baseline in HBV DNA Using Roche COBAS TaqMan - HPS Through Week 96 in Treated Participants
Week 24
-5.30 IU/mL
Standard Error 0.2744
-4.85 IU/mL
Standard Error 0.2900
-3.89 IU/mL
Standard Error 0.5440
Mean Log10 Change From Baseline in HBV DNA Using Roche COBAS TaqMan - HPS Through Week 96 in Treated Participants
Week 36
-5.61 IU/mL
Standard Error 0.2580
-5.14 IU/mL
Standard Error 0.2604
-3.90 IU/mL
Standard Error 0.2499
Mean Log10 Change From Baseline in HBV DNA Using Roche COBAS TaqMan - HPS Through Week 96 in Treated Participants
Week 48
-5.86 IU/mL
Standard Error 0.2176
-5.36 IU/mL
Standard Error 0.3032
-4.32 IU/mL
Standard Error 0.4794
Mean Log10 Change From Baseline in HBV DNA Using Roche COBAS TaqMan - HPS Through Week 96 in Treated Participants
Week 96
-6.30 IU/mL
Standard Error 0.2576
-5.86 IU/mL
Standard Error 0.2222
-5.79 IU/mL
Standard Error 0.5308

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Normalization in ALT= ALT ≤ 1.0\*upper limit of normal (ULN). Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Baseline
0 participants
1 participants
2 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 24
15 participants
12 participants
5 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 30
16 participants
13 participants
5 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 36
16 participants
16 participants
5 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 42
16 participants
15 participants
5 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 48
20 participants
18 participants
4 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 96
10 participants
13 participants
3 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 4
1 participants
1 participants
2 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 8
3 participants
2 participants
2 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 12
5 participants
7 participants
3 participants
Alanine Aminotransferase (ALT) Normalization From Baseline Through Week 96 in Treated Participants
Week 18
15 participants
10 participants
5 participants

SECONDARY outcome

Timeframe: Baseline, Week 48, Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. LLQ = 29 IU/mL. Baseline was the last value measured prior to or on the date of the first dose of study therapy.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Baseline >=17,200 IU/mL
24 participants
19 participants
5 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 48: 50 - < 172 IU/mL
1 participants
2 participants
0 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 48: 172 - < 1720 IU/mL
3 participants
3 participants
1 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 48: 1720 - < 17,200 IU/mL
3 participants
1 participants
3 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 48: > = 17,200 IU/mL
1 participants
3 participants
1 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 96: < 50 IU/mL
8 participants
11 participants
2 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 96: 50 - < 172 IU/mL
1 participants
1 participants
0 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 48: < 50 IU/mL
14 participants
9 participants
0 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 96: 172 - < 1720 IU/mL
3 participants
0 participants
1 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 96: 1720 - < 17,200 IU/mL
0 participants
1 participants
1 participants
Number of Participants With HBV DNA by PCR Categories at Weeks 48 and 96 in Treated Participants
Week 96: > = 17,200 IU/mL
0 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. Baseline was the last value measured prior to or on the date of the first dose of study therapy. Normalization in ALT= ALT ≤ 1.0\*ULN.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 48
13 participants
9 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 96
7 participants
11 participants
2 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 24
10 participants
3 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL Through Week 96 in Treated Participants
Week 36
11 participants
4 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. Baseline was the last value measured prior to or on the date of the first dose of study therapy. Normalization in ALT= ALT ≤ 1.0\*ULN. HBe seroconversion was determination of presence of HBeAb and loss of HBeAg. The method used for the detection of HBeAg seroconversion was the DiaSorin - Anti HBe enzyme immunoassay kit.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Week 36
4 participants
1 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Week 48
8 participants
3 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Week 96
3 participants
1 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Plus HBeAg Seroconversion Through Week 96 in Treated Participants
Week 24
4 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: Baseline to Week 96

Population: The intent-to-treat method of Non-Completer = Failure was used through Week 48 in which all treated participants were analyzed, and participants with missing data at the analysis week were considered failures. After Week 48, the method of Non-Completer = Missing was used, in which participants with missing data at the analysis week were excluded.

Hepatitis B virus DNA by PCR was measured using the Roche COBAS TaqMan - HPS assay and was reported in IU/mL. Baseline was the last value measured prior to or on the date of the first dose of study therapy. Normalization in ALT= ALT ≤ 1.0\*ULN. HBe seroconversion: loss of HBeAg (HBeAg negative) with positive HBeAb. The method used for the detection of HBeAg/Ab serologies was the DiaSorin enzyme immunoassay kit.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Baseline
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Week 12
0 participants
0 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Week 24
6 participants
3 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Week 36
7 participants
3 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Week 48
5 participants
6 participants
0 participants
Number of Participants With a Combination of ALT Normalization and HBV DNA Less Than 50 IU/mL, Without HBeAg Seroconversion, Through Week 96 in Treated Participants
Week 96
4 participants
10 participants
2 participants

SECONDARY outcome

Timeframe: Day 1 to Week 120

Population: Participants who received at least 1 dose of study therapy, and had a measurement during the on-treatment period (i.e., after the first day of study therapy through 5 days after the last dose of study therapy).

Toxicity Scale: Division of AIDs (DAIDS) grades Version 1.0. Upper limit of normal (ULN); lower limit of normal (LLN); Cells per Liter (c/L); cells per microliter (c/µL); grams per deciliter (g/dL); milliequivalents per liter (mEq/L); cells per microliter (c/µL): Grade (Gr). Hemoglobin g/dL: Gr1:10.0-10.9;Gr2: 9.0-9.9; Gr3:7.0-8.9; Gr4: \<7.0. International normalization ratio (INR): Gr1:1.1-\<1.5\*ULN; Gr2: 1.6-\<2.0\*ULN; Gr3: 2.1-3.0\*ULN;Gr4: \>3.0\*ULN. Neutrophils/bands c/µL: Gr1;1.0-1.3\*10\^3; Gr2: 0.75-0.99\*10\^3; Gr 3: 0.50-0.749\*10\^3; Gr4: \<0.5\*10\^3.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Hematology Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
International normalization ratio
4 participants
3 participants
0 participants
Number of Participants With Hematology Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Hemoglobin
1 participants
0 participants
1 participants
Number of Participants With Hematology Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Neutrophils (absolute) + bands
3 participants
3 participants
0 participants

SECONDARY outcome

Timeframe: Day 1 to Week 120

Population: Participants who received at least one dose of study drug, and had a measurement during the on-treatment period (i.e., after the first day of study therapy through 5 days after the last dose of study therapy).

Toxicity Scale: DAIDS Version 1.0 and modified World Health Organization (WHO). Grade (Gr). ALT: Gr1:1.25-\<2.5\*ULN; Gr2: 2.6-\<5.0 \*ULN; Gr3: 5.1-10.0\*ULN; Gr4:\>10.0\*ULN. Aspartate aminotransferase (AST): Gr1: 1.25-\<2.5\*ULN; Gr2:2.6-\<5.0\*ULN; Gr 3: 5.1-10.0\*ULN; Gr4\>10.0\*ULN. Alkaline phosphatase: Gr1:1.25-\<2.5\*ULN; Gr2: 2.6-\<5.0\*ULN; Gr3: 5.1-10.0\*ULN; Gr4: \>10.0\*ULN. Lipase: Gr1:1.1-\<1.5\*ULN;Gr2:1.6-\<3.0\*ULN; Gr3: 3.1-5.0\*ULN; Gr4: \>5.0\*ULN. Creatinine: Gr1: 1.1-1.3\*ULN; Gr2: 1.4-\<1.8\*ULN; Gr3: 1.9 - \<3.4\*ULN; Gr4: \>=3.5\*ULN. Glucose mg/dL (high): Gr1:110-\<125 (Fasting)/116-\<160;Gr2:126-\<250 (F)/161-\<250; Gr3: 251-500; Gr4: \>500.Glucose (low): Gr1: 55-64; Gr2: 40 - \<54; Gr3: 30-39; Gr4: \<30 mg/dL.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
ALT
23 participants
17 participants
4 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
AST
14 participants
9 participants
1 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Alkaline Phosphatase
3 participants
3 participants
0 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Lipase
5 participants
12 participants
3 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Creatinine
1 participants
1 participants
0 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Glucose, high
3 participants
4 participants
1 participants
Number of Participants With Chemistry Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Glucose, low
3 participants
4 participants
1 participants

SECONDARY outcome

Timeframe: Day 1 Week 120

Population: Participants who received at least one dose of study drug, and had a measurement during the on-treatment period (i.e., after the first day of study therapy through 5 days after the last dose of study therapy).

Toxicity Scale: DAIDS Version 1.0 and modified World Health Organization (WHO) for chloride. Milliequivalents per liter (mEq/L); Grade (Gr). Chloride high (mEq/L): Gr1: 113-\<117; Gr2: 117-\<121; Gr3: 121-125; Gr4: \>125. Potassium low (mEq/L): Gr1: 3.0-3.4; Gr2: 2.5-2.9; Gr3:2.0-\<2.4; Gr4: \<2.0. Potassium high: Gr1; 5.6- \<6.0; Gr2: 6.1-\<6.5; Gr3: 6.6-7.0; Gr4: \>7.0. Sodium high (mEq/L): Gr1; 146-\<150; Gr2: 151-\<154; Gr3: 155-\<159; Gr4: \>=160.

Outcome measures

Outcome measures
Measure
Lamivudine (LVD)-Naive (Group A)
n=24 Participants
Participants with less than (\<) 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to Pharmacokinetic (PK) assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Lamivudine (LVD)-Experienced (Group B)
n=19 Participants
Participants with greater than (\>) 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Nucleoside/Tide Analog (NA) - Experienced (Group C)
n=5 Participants
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Number of Participants With Electrolyte Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Potassium, high
1 participants
1 participants
0 participants
Number of Participants With Electrolyte Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Chloride, high
3 participants
0 participants
0 participants
Number of Participants With Electrolyte Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Potassium, low
1 participants
0 participants
0 participants
Number of Participants With Electrolyte Laboratory Abnormalities (Grades 1 - 4) - On Treatment - Treated Participants
Sodium, high
4 participants
3 participants
0 participants

Adverse Events

Group A LVD-naive

Serious events: 2 serious events
Other events: 21 other events
Deaths: 0 deaths

Group B LVD-exp

Serious events: 0 serious events
Other events: 17 other events
Deaths: 0 deaths

Group C NA-exp

Serious events: 0 serious events
Other events: 4 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Group A LVD-naive
n=24 participants at risk
Participants with \< 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Group B LVD-exp
n=19 participants at risk
Participants with \> 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Group C NA-exp
n=5 participants at risk
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Infections and infestations
Gastroenteritis
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Pneumonia
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Investigations
Alanine aminotransferase increased
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Investigations
Aspartate aminotransferase increased
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks

Other adverse events

Other adverse events
Measure
Group A LVD-naive
n=24 participants at risk
Participants with \< 1 week of prior LVD therapy and with no LVD therapy within 24 weeks prior to enrollment were included in Group A. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\>6 years to ≤ 12 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, once a day (QD) and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.015 mg/kg up to 0.5 mg, or ETV tablets, 0.5 mg, QD. Following PK analysis, those who met the specified dosing requirements (at least 0.5 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Group B LVD-exp
n=19 participants at risk
Participants with \> 12 weeks of prior LVD therapy were included in Group B. Prior to PK assessment, Cohort 1 (age ≥ 2 years to ≤ 6 years) and Cohort 2 (\> 6 years to ≤ 12 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, QD and Cohort 3 (age \>12 years to ≤18 years) received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg QD. Following PK analysis, those who met the specified dosing requirements (at least 1.0 mg/day) and could tolerate swallowing ETV tablets were allowed to choose either formulation. Entecavir (ETV) was administered for a maximum of 120 weeks.
Group C NA-exp
n=5 participants at risk
Participants who failed previous treatment with any non-ETV nucleoside/tide analog (NA) were included in Group C, starting in 2011. PK assessment was optional to participants in Group C. All participants received ETV oral solution, 0.030 mg/kg up to 1.0 mg, or ETV tablets, 1.0 mg, QD. Participants who met the specified dosing requirements (at least 1.0 mg/day for NA-experienced participants) and could tolerate swallowing ETV tablets were allowed to choose either formulation. ETV was administered for a maximum of 120 weeks.
Ear and labyrinth disorders
Ear pain
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Ear and labyrinth disorders
Tinnitus
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Eye disorders
Eye haemorrhage
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Eye disorders
Ocular hyperaemia
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Abdominal pain
16.7%
4/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
21.1%
4/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Abdominal pain upper
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Dental caries
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Diarrhoea
20.8%
5/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
15.8%
3/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Enteritis
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Faeces soft
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Flatulence
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Gastrooesophageal reflux disease
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Mouth ulceration
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Nausea
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Odynophagia
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Tooth impacted
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Gastrointestinal disorders
Vomiting
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
21.1%
4/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
General disorders
Chest pain
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
General disorders
Fatigue
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
General disorders
Influenza like illness
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
General disorders
Pyrexia
41.7%
10/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
26.3%
5/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Immune system disorders
Seasonal allergy
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Ear infection
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Gastroenteritis
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Gastroenteritis viral
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Impetigo
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Influenza
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Lyme disease
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Molluscum contagiosum
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Mumps
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Otitis externa
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Otitis media acute
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Pharyngotonsillitis
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Sinusitis
12.5%
3/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Tonsillitis
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Upper respiratory tract infection
41.7%
10/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
15.8%
3/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
40.0%
2/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Infections and infestations
Viral upper respiratory tract infection
16.7%
4/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
47.4%
9/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Injury, poisoning and procedural complications
Fall
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Injury, poisoning and procedural complications
Joint injury
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Injury, poisoning and procedural complications
Ligament sprain
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Injury, poisoning and procedural complications
Limb injury
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Injury, poisoning and procedural complications
Skin abrasion
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Investigations
Blood alkaline phosphatase increased
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Metabolism and nutrition disorders
Decreased appetite
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Musculoskeletal and connective tissue disorders
Arthralgia
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Musculoskeletal and connective tissue disorders
Myalgia
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Nervous system disorders
Dizziness
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Nervous system disorders
Headache
29.2%
7/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
26.3%
5/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Product Issues
Product taste abnormal
4.2%
1/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Psychiatric disorders
Anxiety
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Psychiatric disorders
Mood swings
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Bronchospasm
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Cough
29.2%
7/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
26.3%
5/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Epistaxis
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Nasal congestion
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
12.5%
3/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Respiratory, thoracic and mediastinal disorders
Rhinorrhoea
12.5%
3/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Acne
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Dermatitis allergic
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Dermatitis bullous
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Pruritus
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Rash
8.3%
2/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
10.5%
2/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Rash macular
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Rash maculo-papular
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
20.0%
1/5 • From first dose to date of last dose plus 5 days, up to 120 weeks
Skin and subcutaneous tissue disorders
Rash pruritic
0.00%
0/24 • From first dose to date of last dose plus 5 days, up to 120 weeks
5.3%
1/19 • From first dose to date of last dose plus 5 days, up to 120 weeks
0.00%
0/5 • From first dose to date of last dose plus 5 days, up to 120 weeks

Additional Information

Bristol-Myers Squibb Study Director

Bristol-Myers Squibb

Results disclosure agreements

  • Principal investigator is a sponsor employee Bristol-Myers Squibb Co. agreements with investigators vary; constant is our right to embargo communications regarding trial results prior to public release for a period ≤60 days from submittal for review. We will not prohibit investigators from publishing, but will prohibit the disclosure of previously undisclosed confidential information other than study results, and request postponement of single-center publications until after disclosure of the clinical trial's primary publication.
  • Publication restrictions are in place

Restriction type: OTHER