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A Study of Pegasys (Peginterferon Alfa-2a) Versus Untreated Control in Children With HBeAg Positive Chronic Hepatitis B

A Phase IIIb Parallel Group, Open Label Study of Pegylated Interferon Alfa-2a Monotherapy (PEG-IFN, Ro 25-8310) Compared to Untreated Control in Children With HBeAg Positive Chronic Hepatitis B

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01519960
Enrollment
165
Registered
2012-01-27
Start date
2012-07-11
Completion date
2021-10-18
Last updated
2022-11-18

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

Conditions

Hepatitis B, Chronic

Brief summary

This parallel group, open label study will evaluate the safety and efficacy of Pegasys (peginterferon alfa-2a) versus untreated control in children (age 3 years to \<18 years at baseline) with HBeAg positive chronic hepatitis B. Children without advanced fibrosis and without cirrhosis will be randomized 2:1 to treatment Group A, receiving Pegasys 45-180 mcg subcutaneously weekly for 48 weeks, or to the untreated control Group B. Children with advanced fibrosis will be assigned to treatment group C and receive 48 weeks of treatment with Pegasys. Children in the untreated control Group B who have not experienced seroconversion 48 weeks after randomization may enter the Switch Arm to receive 48 weeks of Pegasys treatment. This offer will be available for 1 year following 48 weeks from randomization. Anticipated time on study treatment is 48 weeks. All subjects will be followed up for 5 years after the end of treatment (A,C,Switch)/principal observation (B) period.

Interventions

DRUGpeginterferon alfa-2a [Pegasys]

Body surface area adapted doses of 45-180 mcg subcutaneously weekly for 48 weeks, Weeks 1- 48

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
3 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Male or female patients, 3 years to \<18 years of age at baseline * Positive HBsAg for more than 6 months * Positive HBeAg and detectable HBV DNA at screening * A liver biopsy obtained within the past 2 years prior to baseline (and more than 6 months after the end of previous therapy for hepatitis B) to confirm the presence of advanced fibrosis or exclude cirrhosis * Compensated liver disease (Child-Pugh Class A) * Elevated serum alanine transferase (ALT) * Normal thyroid gland function at screening

Exclusion criteria

* Subjects with cirrhosis * Subjects must not have received investigational drugs or licensed treatments with anti-HBV activity within 6 months of baseline. Subjects who are expected to need systemic antiviral therapy other than that provided by the study at any time during their participation in the study are also excluded * Known hypersensitivity to peginterferon * Positive test results at screening for hepatitis A, hepatitis C, hepatitis D or HIV infection * History or evidence of medical condition associated with chronic liver disease other than chronic hepatitis B * History or evidence of bleeding from esophageal varices * Decompensated liver disease (e.g. ascites, Child-Pugh Class B or C) * History of immunologically mediated disease * Pregnant or lactating females

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With HBeAg Seroconversion at 24 Weeks After End of Treatment (EOT)/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.

Secondary

MeasureTime frameDescription
Percentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroconversion at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBsAg seroconversion was defined as loss of HBsAg and the presence of hepatitis B surface antibody (anti-HBs). The percentage of participants with HBsAg seroconversion at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Normal ALT at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)Normal ALT was defined as ALT less than or equal to (≤) ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using polymerase chain reaction (PCR) by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBeAg Seroconversion at EOT/POP in Groups A and BWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Loss of HBeAg at EOT/POP in Groups A and BWeek 48The percentage of participants with loss of HBeAg at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBsAg Seroconversion at EOT/POP in Groups A and BWeek 48HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Loss of HBsAg at EOT/POP in Groups A and BWeek 48The percentage of participants with loss of HBsAg at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Normal ALT at EOT/POP in Groups A and BWeek 48Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA <20,000 IU/mL at EOT/POP in Groups A and BWeek 48HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA <2,000 IU/mL at EOT/POP in Groups A and BWeek 48HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA Undetectable at EOT/POP in Groups A and BWeek 48HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT/POP in Groups A and BWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT/POP in Groups A and BWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Quantitative Serum ALT Level in Groups A and BBaseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)Quantitative ALT at each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). ITT Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBV DNA Level in Groups A and BBaseline; Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)Quantitative HBV DNA at each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBV DNA Level in Groups A and BWeeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The change in quantitative HBV DNA from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Percentage of Participants With Loss of HBeAg at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)The percentage of participants with loss of HBeAg at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population: All participants who received at least one dose of study drug (if assigned) and had at least one post-baseline safety assessment.
Percentage of Participants With HBsAg Seroconversion at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Loss of HBsAg at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)The percentage of participants with loss of HBsAg at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population
Percentage of Participants With Normal ALT at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA Undetectable at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBeAg Seroconversion at EOT in Group CWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Loss of HBeAg at EOT in Group CWeek 48The percentage of participants with loss of HBeAg at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBsAg Seroconversion at EOT in Group CWeek 48HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Loss of HBsAg at EOT in Group CWeek 48The percentage of participants with loss of HBsAg at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Normal ALT at EOT in Group CWeek 48Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA <20,000 IU/mL at EOT in Group CWeek 48HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA <2,000 IU/mL at EOT in Group CWeek 48HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With HBV DNA Undetectable at EOT in Group CWeek 48HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT in Group CWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT in Group CWeek 48HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Quantitative Serum ALT Level in Group CBaseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)Quantitative ALT at each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBV DNA Level in Group CBaseline; Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)Quantitative HBV DNA at each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBV DNA Level in Group CWeeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The change in quantitative HBV DNA from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Estimated Area Under the Concentration-Time Curve (AUC) by BSA CategoryPre-dose (0 hours) at Baseline and Weeks 4, 8, 12, 24; post-dose (24-48, 72-96, 168 hours) during Weeks 1, 24 (up to 24 weeks overall)AUC was estimated using population pharmacokinetic (PK) modeling. The AUC at steady-state was averaged among participants who received PEG-IFN and reported by BSA category. Categories of BSA-based dosing used in the analysis were as follows: 0.54-0.74 m\^2, 65 mcg; 0.75-1.08 m\^2, 90 mcg; 1.09-1.51 m\^2, 135 mcg; \>1.51 m\^2, 180 mcg. The estimated AUC was expressed in hours by nanograms per milliliter (h\*ng/mL). PK Substudy Population: All participants who consented to participate in the PK substudy. Number of subjects analyzed reflects the total combined number of participants who provided evaluable data across all BSA categories. The number of participants who provided evaluable data within each BSA category (n) is shown in the table.
Percentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)The percentage of participants with \>15% drop in height percentile for age from Baseline to each visit was reported. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Percentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeeks 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The percentage of participants with \>15% drop in weight percentile for age from Baseline to each visit was reported. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBeAg Level in Groups A and BBaseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)Quantitative HBeAg at each visit was averaged among all participants and expressed in log10 Paul Ehrlich Institute units per milliliter (PEIU/mL). ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBsAg Level in Groups A and BBaseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)Quantitative HBsAg at each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBeAg Level in Group CBaseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)Quantitative HBeAg at each visit was averaged among all participants and expressed in log10 PEIU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Quantitative HBsAg Level in Group CBaseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)Quantitative HBsAg at each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population.
Change From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CWeek 48; FU Week 24 (up to 72 weeks overall)Liver elastography was performed to assess elasticity and extent of hepatic fibrosis. The change in LSM from Baseline to each visit was averaged among all participants in expressed in kilopascals (kPa). Positive changes in LSM values corresponded to an increase in stiffness and hepatic fibrosis. Liver Substudy Population: All participants who consented to participate in the liver elasticity substudy. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Percentage of Participants With >15% Drop in Height Percentile for Age in Group CWeeks 30, 36; FU Weeks 4, 12, 24 (up to 72 weeks overall)The percentage of participants with \>15% drop in weight percentile for age from Baseline to each visit was reported. Safety Population.
Change From Baseline in Height for Age Z-Score in Groups A and BBaseline; Weeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)The difference between the population mean and raw scores was calculated as the height for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Weight for Age Z-Score in Groups A and BBaseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The difference between the population mean and raw scores was calculated as the weight for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations.Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Height for Age Z-Score in Group CBaseline; Weeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)The difference between the population mean and raw scores was calculated as the height for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population.
Change From Baseline in Weight for Age Z-Score in Group CBaseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The difference between the population mean and raw scores was calculated as the weight for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Percentage of Participants With HBeAg Seroconversion at 24 Weeks After EOT in Group CFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.
Change From Baseline in Quantitative Serum ALT Level in Groups A and BWeeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The change in quantitative ALT from Baseline to each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBeAg Level in Groups A and BWeeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)The change in quantitative HBeAg from Baseline to each visit was averaged among all participants and expressed in log10 PEIU/mL. ITT Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBsAg Level in Groups A and BWeeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)The change in quantitative HBsAg from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative Serum ALT Level in Group CWeeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)The change in quantitative ALT from Baseline to each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBeAg Level in Group CWeeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)The change in quantitative HBeAg from Baseline to each visit was averaged among all participants and expressed in log10 PEIU/mL. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.
Change From Baseline in Quantitative HBsAg Level in Group CWeeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)The change in quantitative HBsAg from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population.
Percentage of Participants With HBeAg Seroconversion Over Time in Groups A and BBaseline, FU Years: 1, 2, 3, 4, 5HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Loss of HBeAg at 24 Weeks After EOT/POP in Groups A and BFU Week 24 (up to 72 weeks overall)The percentage of participants with loss of HBeAg at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBsAg Seroconversion at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.
Percentage of Participants With Loss of HBsAg at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.
Percentage of Participants With Normal ALT at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using polymerase chain reaction (PCR) by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With HBV DNA Undetectable at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.
Percentage of Participants With Loss of HBeAg at 24 Weeks After the End of Switch Treatment Period: Switch GroupFU Week 24 (up to 72 weeks overall)The percentage of participants with loss of HBeAg at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Countries

Australia, Belgium, Bulgaria, China, Germany, Israel, Italy, Poland, Russia, Ukraine, United Kingdom, United States

Participant flow

Pre-assignment details

A total of 211 individuals were screened for entry into the study. Of these, there were 161 participants enrolled in the study and included in the main analyses.

Participants by arm

ArmCount
Group A: PEG-IFN Monotherapy Without Advanced Fibrosis
Participants without advanced fibrosis were randomized and received PEG-IFN monotherapy for 48 weeks with a 24-week follow-up and an additional 4.5-year extended follow-up. Each dose of 45 to 180 micrograms (mcg) was based on BSA and given as a once-weekly subcutaneous (SC) injection for 48 weeks. BSA-based dosing was as follows: 0.51-0.53 square meters (m\^2), 45 mcg; 0.54-0.74 m\^2, 65 mcg; 0.75-1.08 m\^2, 90 mcg; 1.09-1.51 m\^2, 135 mcg; greater than (\>) 1.51 m\^2, 180 mcg.
101
Group B: Untreated Control Without Advanced Fibrosis
Participants without advanced fibrosis were randomized and were evaluated for 48 weeks with a 24-week follow-up and an additional ongoing 4.5-year extended follow-up. As the study is open-label, participants did not receive any investigational or placebo treatment during the 48-week principal observation period (POP). For ethical reasons, participants in Group B had a reduced visit schedule (every 12 weeks) compared to participants in Group A through the end of 24-week follow-up. After completing the POP, the same PEG-IFN regimen administered in Group A was offered to participants in Group B who had not experienced hepatitis B envelope antigen (HBeAg) seroconversion. The offer remained for up to 1 year following the Week 48 visit. From the time a given participant switched to PEG-IFN, he/she was no longer included in Group B.
50
Group C: PEG-IFN Monotherapy With Advanced Fibrosis
Participants with advanced fibrosis were allocated (not randomized) to receive PEG-IFN monotherapy for 48 weeks with a 24-week follow-up and an additional 4.5-year extended follow-up. Each dose of 45 to 180 mcg was based on BSA and given as a once-weekly SC injection for 48 weeks. BSA-based dosing was as follows: 0.51-0.53 m\^2, 45 mcg; 0.54-0.74 m\^2, 65 mcg; 0.75-1.08 m\^2, 90 mcg; 1.09-1.51 m\^2, 135 mcg; \>1.51 m\^2, 180 mcg.
10
Total161

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyWithdrawal from the study26225

Baseline characteristics

CharacteristicGroup B: Untreated Control Without Advanced FibrosisTotalGroup A: PEG-IFN Monotherapy Without Advanced FibrosisGroup C: PEG-IFN Monotherapy With Advanced Fibrosis
Age, Continuous11.2 years
STANDARD_DEVIATION 5.01
10.55 years
STANDARD_DEVIATION 4.81
10.41 years
STANDARD_DEVIATION 4.57
6.7 years
STANDARD_DEVIATION 3.27
Age, Customized
85 years and over
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Adolescents (12-17 years)
30 Participants79 Participants48 Participants1 Participants
Age, Customized
Adults (18-64 years)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Children (2-11 years)
20 Participants82 Participants53 Participants9 Participants
Age, Customized
From 65-84 years
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Infants and toddlers (28 days-23 months)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
In utero
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Newborns (0-27 days)
0 Participants0 Participants0 Participants0 Participants
Age, Customized
Preterm newborn infants (gestational age < 37 wks)
0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Female
18 Participants57 Participants37 Participants2 Participants
Sex: Female, Male
Male
32 Participants104 Participants64 Participants8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
deaths
Total, all-cause mortality
0 / 1010 / 490 / 100 / 330 / 1010 / 490 / 100 / 33
other
Total, other adverse events
80 / 10118 / 499 / 1021 / 3325 / 1016 / 490 / 1027 / 33
serious
Total, serious adverse events
6 / 1011 / 490 / 102 / 330 / 1010 / 490 / 100 / 33

Outcome results

Primary

Percentage of Participants With HBeAg Seroconversion at 24 Weeks After End of Treatment (EOT)/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at 24 Weeks After End of Treatment (EOT)/POP in Groups A and B25.7 percentage of participants95% Confidence Interval 17.56
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at 24 Weeks After End of Treatment (EOT)/POP in Groups A and B6 percentage of participants95% Confidence Interval 1.25
Comparison: Analysis stratified by hepatitis B virus (HBV) genotype A versus non-A genotypes and alanine aminotransferase (ALT) less than (\<) 5 times (×) upper limit of normal (ULN) versus greater than or equal to (≥) 5 × ULN at Baseline. The OR was calculated using Group B as reference.p-value: =0.004395% CI: [1.54, 19.2]Cochran-Mantel-Haenszel
p-value: =0.3732Breslow-Day
Secondary

Change From Baseline in Height for Age Z-Score in Group C

The difference between the population mean and raw scores was calculated as the height for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CBaseline0.586 standard deviationsStandard Deviation 0.947
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CWeek 120.07 standard deviationsStandard Deviation 0.492
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CWeek 240.262 standard deviationsStandard Deviation 0.42
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CWeek 360.3 standard deviationsStandard Deviation 0.601
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CWeek 480.19 standard deviationsStandard Deviation 0.683
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CFU Week 120.205 standard deviationsStandard Deviation 0.611
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Group CFU Week 240.064 standard deviationsStandard Deviation 0.634
Secondary

Change From Baseline in Height for Age Z-Score in Groups A and B

The difference between the population mean and raw scores was calculated as the height for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 24-0.04 standard deviationsStandard Deviation 0.293
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 48-0.099 standard deviationsStandard Deviation 0.365
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 120.011 standard deviationsStandard Deviation 0.258
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BFU Week 12-0.112 standard deviationsStandard Deviation 0.404
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 36-0.056 standard deviationsStandard Deviation 0.337
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BFU Week 24-0.117 standard deviationsStandard Deviation 0.429
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BBaseline0.271 standard deviationsStandard Deviation 1.149
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BFU Week 24-0.079 standard deviationsStandard Deviation 0.282
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BBaseline-0.062 standard deviationsStandard Deviation 1.17
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 12-0.006 standard deviationsStandard Deviation 0.185
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 24-0.071 standard deviationsStandard Deviation 0.264
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 36-0.025 standard deviationsStandard Deviation 0.328
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BWeek 48-0.013 standard deviationsStandard Deviation 0.284
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Height for Age Z-Score in Groups A and BFU Week 12-0.037 standard deviationsStandard Deviation 0.243
Secondary

Change From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, C

Liver elastography was performed to assess elasticity and extent of hepatic fibrosis. The change in LSM from Baseline to each visit was averaged among all participants in expressed in kilopascals (kPa). Positive changes in LSM values corresponded to an increase in stiffness and hepatic fibrosis. Liver Substudy Population: All participants who consented to participate in the liver elasticity substudy. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Week 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CWeek 48-0.49 kPaStandard Deviation 2.151
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CFU Week 24-1.026 kPaStandard Deviation 2.269
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CWeek 480.376 kPaStandard Deviation 2.719
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CFU Week 24-0.72 kPaStandard Deviation 2.633
Group C: PEG-IFN Monotherapy With Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CWeek 48-1.517 kPaStandard Deviation 1.685
Group C: PEG-IFN Monotherapy With Advanced FibrosisChange From Baseline in Liver Stiffness Measure (LSM) in Groups A, B, CFU Week 24-1.7 kPaStandard Deviation 1.033
Secondary

Change From Baseline in Quantitative HBeAg Level in Group C

The change in quantitative HBeAg from Baseline to each visit was averaged among all participants and expressed in log10 PEIU/mL. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Group CWeek 12-0.779 log10 PEIU/mLStandard Deviation 0.645
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Group CWeek 24-0.817 log10 PEIU/mLStandard Deviation 0.678
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Group CWeek 36-0.817 log10 PEIU/mLStandard Deviation 0.685
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Group CWeek 48-0.762 log10 PEIU/mLStandard Deviation 0.818
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Group CFU Week 24-0.742 log10 PEIU/mLStandard Deviation 0.84
Secondary

Change From Baseline in Quantitative HBeAg Level in Groups A and B

The change in quantitative HBeAg from Baseline to each visit was averaged among all participants and expressed in log10 PEIU/mL. ITT Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 24-0.834 log10 PEIU/mLStandard Deviation 0.805
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 48-1.28 log10 PEIU/mLStandard Deviation 1.043
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 361.123 log10 PEIU/mLStandard Deviation 0.91
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BFU Week 24-1.24 log10 PEIU/mLStandard Deviation 1.205
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 12-0.583 log10 PEIU/mLStandard Deviation 0.672
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BFU Week 24-0.452 log10 PEIU/mLStandard Deviation 0.793
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 12-0.225 log10 PEIU/mLStandard Deviation 0.497
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 24-0.261 log10 PEIU/mLStandard Deviation 0.612
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 36-0.3 log10 PEIU/mLStandard Deviation 0.621
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBeAg Level in Groups A and BWeek 48-0.491 log10 PEIU/mLStandard Deviation 0.74
Secondary

Change From Baseline in Quantitative HBsAg Level in Group C

The change in quantitative HBsAg from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population.

Time frame: Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Group CWeek 12-0.397 log10 IU/mLStandard Deviation 0.428
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Group CWeek 24-0.71 log10 IU/mLStandard Deviation 0.712
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Group CWeek 36-0.943 log10 IU/mLStandard Deviation 0.913
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Group CWeek 48-1.01 log10 IU/mLStandard Deviation 1.019
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Group CFU Week 24-1.088 log10 IU/mLStandard Deviation 1.141
Secondary

Change From Baseline in Quantitative HBsAg Level in Groups A and B

The change in quantitative HBsAg from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 24-0.798 log10 IU/mLStandard Deviation 1.343
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 48-1.239 log10 IU/mLStandard Deviation 1.652
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 36-1.051 log10 IU/mLStandard Deviation 1.534
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BFU Week 24-0.936 log10 IU/mLStandard Deviation 1.491
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 12-0.444 log10 IU/mLStandard Deviation 1.021
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BFU Week 24-0.204 log10 IU/mLStandard Deviation 0.316
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 12-0.081 log10 IU/mLStandard Deviation 0.356
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 24-0.032 log10 IU/mLStandard Deviation 0.392
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 36-0.126 log10 IU/mLStandard Deviation 0.26
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBsAg Level in Groups A and BWeek 48-0.188 log10 IU/mLStandard Deviation 0.285
Secondary

Change From Baseline in Quantitative HBV DNA Level in Group C

The change in quantitative HBV DNA from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CFU Week 4-3.262 log10 IU/mLStandard Deviation 2.102
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CWeek 12-2.084 log10 IU/mLStandard Deviation 1.1
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CWeek 24-2.267 log10 IU/mLStandard Deviation 1.595
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CWeek 36-2.529 log10 IU/mLStandard Deviation 1.879
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CWeek 48-2.546 log10 IU/mLStandard Deviation 2.14
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CFU Week 12-3.613 log10 IU/mLStandard Deviation 2.519
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Group CFU Week 24-4.15 log10 IU/mLStandard Deviation 2.904
Secondary

Change From Baseline in Quantitative HBV DNA Level in Groups A and B

The change in quantitative HBV DNA from Baseline to each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 12-1.588 log10 IU/mLStandard Deviation 1.625
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 24-2.112 log10 IU/mLStandard Deviation 1.996
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 36-2.525 log10 IU/mLStandard Deviation 2.148
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 48-2.877 log10 IU/mLStandard Deviation 2.374
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BFU Week 4-2.34 log10 IU/mLStandard Deviation 2.582
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BFU Week 12-2.164 log10 IU/mLStandard Deviation 2.737
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BFU Week 24-2.381 log10 IU/mLStandard Deviation 2.778
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 12-0.156 log10 IU/mLStandard Deviation 1.093
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 48-0.493 log10 IU/mLStandard Deviation 1.518
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 24-0.168 log10 IU/mLStandard Deviation 1.214
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BFU Week 12-0.86 log10 IU/mLStandard Deviation 2.163
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BWeek 36-0.359 log10 IU/mLStandard Deviation 1.411
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative HBV DNA Level in Groups A and BFU Week 24-0.587 log10 IU/mLStandard Deviation 2.259
Secondary

Change From Baseline in Quantitative Serum ALT Level in Group C

The change in quantitative ALT from Baseline to each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 10.313 factor of ULNStandard Deviation 0.414
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 20.091 factor of ULNStandard Deviation 0.991
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 4-0.361 factor of ULNStandard Deviation 1.566
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 8-0.101 factor of ULNStandard Deviation 1.895
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 12-0.012 factor of ULNStandard Deviation 1.613
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 18-0.589 factor of ULNStandard Deviation 0.996
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 24-0.917 factor of ULNStandard Deviation 1.31
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 30-0.584 factor of ULNStandard Deviation 1.73
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 36-0.633 factor of ULNStandard Deviation 1.455
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 42-1.211 factor of ULNStandard Deviation 1.05
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CWeek 48-1.104 factor of ULNStandard Deviation 1.084
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CFU Week 4-1.669 factor of ULNStandard Deviation 0.95
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CFU Week 12-1.283 factor of ULNStandard Deviation 1.501
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Group CFU Week 24-1.256 factor of ULNStandard Deviation 1.757
Secondary

Change From Baseline in Quantitative Serum ALT Level in Groups A and B

The change in quantitative ALT from Baseline to each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 10.606 factor of ULNStandard Deviation 1.565
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 20.06 factor of ULNStandard Deviation 2.283
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 40.564 factor of ULNStandard Deviation 3.026
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 80.463 factor of ULNStandard Deviation 3.225
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 120.415 factor of ULNStandard Deviation 3.732
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 42-0.436 factor of ULNStandard Deviation 2.732
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 48-0.63 factor of ULNStandard Deviation 2.652
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BFU Week 4-1.474 factor of ULNStandard Deviation 2.889
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BFU Week 12-0.736 factor of ULNStandard Deviation 2.972
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BFU Week 24-1.302 factor of ULNStandard Deviation 2.766
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 180.288 factor of ULNStandard Deviation 3.332
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 240.004 factor of ULNStandard Deviation 3.496
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 30-0.1 factor of ULNStandard Deviation 3.163
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 36-0.302 factor of ULNStandard Deviation 2.8
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 120.598 factor of ULNStandard Deviation 5.934
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BFU Week 24-0.701 factor of ULNStandard Deviation 2.22
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 36-0.51 factor of ULNStandard Deviation 1.835
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 24-0.462 factor of ULNStandard Deviation 2.311
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Quantitative Serum ALT Level in Groups A and BWeek 48-0.939 factor of ULNStandard Deviation 1.914
Secondary

Change From Baseline in Weight for Age Z-Score in Group C

The difference between the population mean and raw scores was calculated as the weight for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CBaseline0.187 standard deviationsStandard Deviation 1.141
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 1-0.044 standard deviationsStandard Deviation 0.052
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 2-0.023 standard deviationsStandard Deviation 0.107
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 40.049 standard deviationsStandard Deviation 0.243
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 8-0.041 standard deviationsStandard Deviation 0.198
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 120.012 standard deviationsStandard Deviation 0.288
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 18-0.018 standard deviationsStandard Deviation 0.377
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 24-0.089 standard deviationsStandard Deviation 0.245
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 30-0.094 standard deviationsStandard Deviation 0.34
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 360 standard deviationsStandard Deviation 0.443
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 42-0.032 standard deviationsStandard Deviation 0.344
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CWeek 48-0.208 standard deviationsStandard Deviation 0.374
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CFU Week 4-0.054 standard deviationsStandard Deviation 0.35
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CFU Week 12-0.156 standard deviationsStandard Deviation 0.29
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Group CFU Week 24-0.161 standard deviationsStandard Deviation 0.309
Secondary

Change From Baseline in Weight for Age Z-Score in Groups A and B

The difference between the population mean and raw scores was calculated as the weight for age z-score. Mean absolute values at Baseline were reported. The change from Baseline to each visit was averaged among all participants and expressed in units of standard deviations.Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 1-0.024 standard deviationsStandard Deviation 0.089
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 4-0.048 standard deviationsStandard Deviation 0.158
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 8-0.082 standard deviationsStandard Deviation 0.228
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 12-0.09 standard deviationsStandard Deviation 0.267
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 42-0.24 standard deviationsStandard Deviation 0.375
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 48-0.214 standard deviationsStandard Deviation 0.371
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BFU Week 4-0.156 standard deviationsStandard Deviation 0.346
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BFU Week 12-0.089 standard deviationsStandard Deviation 0.384
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BFU Week 24-0.046 standard deviationsStandard Deviation 0.452
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BBaseline0.106 standard deviationsStandard Deviation 1.154
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 2-0.023 standard deviationsStandard Deviation 0.108
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 18-0.155 standard deviationsStandard Deviation 0.309
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 24-0.165 standard deviationsStandard Deviation 0.35
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 30-0.189 standard deviationsStandard Deviation 0.372
Group A: PEG-IFN Monotherapy Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 36-0.192 standard deviationsStandard Deviation 0.395
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 12-0.04 standard deviationsStandard Deviation 0.241
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BFU Week 24-0.322 standard deviationsStandard Deviation 0.325
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BFU Week 12-0.263 standard deviationsStandard Deviation 0.333
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 24-0.09 standard deviationsStandard Deviation 0.323
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 48-0.082 standard deviationsStandard Deviation 0.343
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BBaseline-0.047 standard deviationsStandard Deviation 1.154
Group B: Untreated Control Without Advanced FibrosisChange From Baseline in Weight for Age Z-Score in Groups A and BWeek 36-0.057 standard deviationsStandard Deviation 0.338
Secondary

Estimated Area Under the Concentration-Time Curve (AUC) by BSA Category

AUC was estimated using population pharmacokinetic (PK) modeling. The AUC at steady-state was averaged among participants who received PEG-IFN and reported by BSA category. Categories of BSA-based dosing used in the analysis were as follows: 0.54-0.74 m\^2, 65 mcg; 0.75-1.08 m\^2, 90 mcg; 1.09-1.51 m\^2, 135 mcg; \>1.51 m\^2, 180 mcg. The estimated AUC was expressed in hours by nanograms per milliliter (h\*ng/mL). PK Substudy Population: All participants who consented to participate in the PK substudy. Number of subjects analyzed reflects the total combined number of participants who provided evaluable data across all BSA categories. The number of participants who provided evaluable data within each BSA category (n) is shown in the table.

Time frame: Pre-dose (0 hours) at Baseline and Weeks 4, 8, 12, 24; post-dose (24-48, 72-96, 168 hours) during Weeks 1, 24 (up to 24 weeks overall)

ArmMeasureGroupValue (MEAN)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisEstimated Area Under the Concentration-Time Curve (AUC) by BSA Category0.54-0.74 m^23320 h*ng/mL
Group A: PEG-IFN Monotherapy Without Advanced FibrosisEstimated Area Under the Concentration-Time Curve (AUC) by BSA Category0.75-1.08 m^24037 h*ng/mL
Group A: PEG-IFN Monotherapy Without Advanced FibrosisEstimated Area Under the Concentration-Time Curve (AUC) by BSA Category1.09-1.51 m^22765 h*ng/mL
Group A: PEG-IFN Monotherapy Without Advanced FibrosisEstimated Area Under the Concentration-Time Curve (AUC) by BSA Category>1.51 m^23448 h*ng/mL
Secondary

Percentage of Participants With >15% Drop in Height Percentile for Age in Group C

The percentage of participants with \>15% drop in weight percentile for age from Baseline to each visit was reported. Safety Population.

Time frame: Weeks 30, 36; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Group CWeek 3020 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Group CWeek 3610 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Group CFU Week 410 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Group CFU Week 1210 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Group CFU Week 2420 percentage of participants
Secondary

Percentage of Participants With >15% Drop in Height Percentile for Age in Groups A and B

The percentage of participants with \>15% drop in height percentile for age from Baseline to each visit was reported. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 12, 24, 36, 48; FU Weeks 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 121 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 245 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 364 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 486.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BFU Week 1210.9 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BFU Week 2412 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BFU Week 124.2 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 120 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 482.1 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 248.5 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BFU Week 246.7 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Height Percentile for Age in Groups A and BWeek 364.2 percentage of participants
Secondary

Percentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and B

The percentage of participants with \>15% drop in weight percentile for age from Baseline to each visit was reported. Safety Population. Number of subjects analyzed reflects the total number of participants who provided evaluable data at any timepoint. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Weeks 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 188.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BFU Week 48.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BFU Week 126.9 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 2416 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BFU Week 2411 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 42 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 125.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 3013.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 3611.3 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 85 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 4213.1 percentage of participants
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 4812.5 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BFU Week 2420 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 122.1 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 248.5 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 368.3 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BWeek 488.5 percentage of participants
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With >15% Drop in Weight Percentile for Age in Groups A and BFU Week 1220.8 percentage of participants
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B22.8 percentage of participants95% Confidence Interval 15.02
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B4 percentage of participants95% Confidence Interval 0.49
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group27.3 percentage of participants
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT in Group C20 percentage of participants95% Confidence Interval 2.52
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<20,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B6.9 percentage of participants95% Confidence Interval 2.83
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B6 percentage of participants95% Confidence Interval 1.25
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B19.8 percentage of participants95% Confidence Interval 12.54
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B2 percentage of participants95% Confidence Interval 0.05
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group21.2 percentage of participants
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT in Group C20 percentage of participants95% Confidence Interval 2.52
Secondary

Percentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with combined HBeAg seroconversion and HBV DNA \<2,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B6.9 percentage of participants95% Confidence Interval 2.83
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Combined HBeAg Seroconversion and HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With HBeAg Seroconversion at 24 Weeks After EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at 24 Weeks After EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With HBeAg Seroconversion at EOT in Group C

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at EOT in Group C20 percentage of participants95% Confidence Interval 2.52
Secondary

Percentage of Participants With HBeAg Seroconversion at EOT/POP in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The percentage of participants with HBeAg seroconversion at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at EOT/POP in Groups A and B7.9 percentage of participants95% Confidence Interval 3.48
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion at EOT/POP in Groups A and B6 percentage of participants95% Confidence Interval 1.25
Secondary

Percentage of Participants With HBeAg Seroconversion Over Time in Groups A and B

HBeAg seroconversion was defined as loss of HBeAg and the presence of anti-HBe. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Baseline, FU Years: 1, 2, 3, 4, 5

ArmMeasureGroupValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 233.7 percentage of subjects95% Confidence Interval 24.56
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BBaseline0.00 percentage of subjects95% Confidence Interval 0
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 132.7 percentage of subjects95% Confidence Interval 23.67
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 346.5 percentage of subjects95% Confidence Interval 36.55
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 430.7 percentage of subjects95% Confidence Interval 21.9
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 55.9 percentage of subjects95% Confidence Interval 2.21
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 48.00 percentage of subjects95% Confidence Interval 2.22
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 36.08 percentage of subjects95% Confidence Interval 1.25
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BBaseline0.00 percentage of subjects95% Confidence Interval 0
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 50.00 percentage of subjects95% Confidence Interval 0
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 16.08 percentage of subjects95% Confidence Interval 1.25
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBeAg Seroconversion Over Time in Groups A and BFu Year 26.08 percentage of subjects95% Confidence Interval 1.25
Secondary

Percentage of Participants With HBsAg Seroconversion at 24 Weeks After EOT in Group C

HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBsAg Seroconversion at 24 Weeks After EOT in Group C0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With HBsAg Seroconversion at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBsAg Seroconversion at 24 Weeks After the End of Switch Treatment Period: Switch Group9.1 percentage of participants
Secondary

Percentage of Participants With HBsAg Seroconversion at EOT in Group C

HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBsAg Seroconversion at EOT in Group C0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With HBsAg Seroconversion at EOT/POP in Groups A and B

HBsAg seroconversion was defined as loss of HBsAg and the presence of anti-HBs. The percentage of participants with HBsAg seroconversion at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBsAg Seroconversion at EOT/POP in Groups A and B6.9 percentage of participants95% Confidence Interval 2.83
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBsAg Seroconversion at EOT/POP in Groups A and B0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After EOT/POP in Groups A and B

HBV DNA was quantified using polymerase chain reaction (PCR) by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After EOT/POP in Groups A and B33.7 percentage of participants95% Confidence Interval 24.56
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After EOT/POP in Groups A and B4 percentage of participants95% Confidence Interval 0.49
Secondary

Percentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBV DNA was quantified using polymerase chain reaction (PCR) by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV Deoxyribonucleic Acid (DNA) <20,000 International Units Per Milliliter (IU/mL) at 24 Weeks After the End of Switch Treatment Period: Switch Group36.4 percentage of participants
Secondary

Percentage of Participants With HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <20,000 IU/mL at 24 Weeks After EOT in Group C70 percentage of participants95% Confidence Interval 34.75
Secondary

Percentage of Participants With HBV DNA <20,000 IU/mL at EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <20,000 IU/mL at EOT in Group C40 percentage of participants95% Confidence Interval 12.16
Secondary

Percentage of Participants With HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<20,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B36.6 percentage of participants95% Confidence Interval 27.27
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBV DNA <20,000 IU/mL at EOT/POP in Groups A and B12 percentage of participants95% Confidence Interval 4.53
Secondary

Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT in Group C70 percentage of participants95% Confidence Interval 34.75
Secondary

Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B28.7 percentage of participants95% Confidence Interval 20.15
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After EOT/POP in Groups A and B2 percentage of participants95% Confidence Interval 0.05
Secondary

Percentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at 24 Weeks After the End of Switch Treatment Period: Switch Group27.3 percentage of participants
Secondary

Percentage of Participants With HBV DNA <2,000 IU/mL at EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B

HBV DNA was quantified using PCR by Roche Taqman. The percentage of participants with HBV DNA \<2,000 IU/mL at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B30.7 percentage of participants95% Confidence Interval 21.9
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBV DNA <2,000 IU/mL at EOT/POP in Groups A and B2 percentage of participants95% Confidence Interval 0.05
Secondary

Percentage of Participants With HBV DNA Undetectable at 24 Weeks After EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA Undetectable at 24 Weeks After EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With HBV DNA Undetectable at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA Undetectable at 24 Weeks After the End of Switch Treatment Period: Switch Group18.2 percentage of participants
Secondary

Percentage of Participants With HBV DNA Undetectable at EOT in Group C

HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA Undetectable at EOT in Group C20 percentage of participants95% Confidence Interval 2.52
Secondary

Percentage of Participants With HBV DNA Undetectable at EOT/POP in Groups A and B

HBV DNA was quantified using PCR by Roche Taqman. Undetectable HBV DNA was defined as HBV DNA \<29 IU/mL. The percentage of participants with HBV DNA undetectable at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With HBV DNA Undetectable at EOT/POP in Groups A and B18.8 percentage of participants95% Confidence Interval 11.72
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With HBV DNA Undetectable at EOT/POP in Groups A and B0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroconversion at 24 Weeks After EOT/POP in Groups A and B

HBsAg seroconversion was defined as loss of HBsAg and the presence of hepatitis B surface antibody (anti-HBs). The percentage of participants with HBsAg seroconversion at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroconversion at 24 Weeks After EOT/POP in Groups A and B7.9 percentage of participants95% Confidence Interval 3.48
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroconversion at 24 Weeks After EOT/POP in Groups A and B0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With Loss of HBeAg at 24 Weeks After EOT in Group C

The percentage of participants with loss of HBeAg at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population: All participants who received at least one dose of study drug (if assigned) and had at least one post-baseline safety assessment.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at 24 Weeks After EOT in Group C30 percentage of participants95% Confidence Interval 6.67
Secondary

Percentage of Participants With Loss of HBeAg at 24 Weeks After EOT/POP in Groups A and B

The percentage of participants with loss of HBeAg at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at 24 Weeks After EOT/POP in Groups A and B25.7 percentage of participants95% Confidence Interval 17.56
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at 24 Weeks After EOT/POP in Groups A and B6 percentage of participants95% Confidence Interval 1.25
Secondary

Percentage of Participants With Loss of HBeAg at 24 Weeks After the End of Switch Treatment Period: Switch Group

The percentage of participants with loss of HBeAg at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at 24 Weeks After the End of Switch Treatment Period: Switch Group30.3 percentage of participants
Secondary

Percentage of Participants With Loss of HBeAg at EOT in Group C

The percentage of participants with loss of HBeAg at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at EOT in Group C20 percentage of participants95% Confidence Interval 2.52
Secondary

Percentage of Participants With Loss of HBeAg at EOT/POP in Groups A and B

The percentage of participants with loss of HBeAg at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at EOT/POP in Groups A and B8.9 percentage of participants95% Confidence Interval 4.16
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Loss of HBeAg at EOT/POP in Groups A and B6 percentage of participants95% Confidence Interval 1.25
Secondary

Percentage of Participants With Loss of HBsAg at 24 Weeks After EOT in Group C

The percentage of participants with loss of HBsAg at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBsAg at 24 Weeks After EOT in Group C0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With Loss of HBsAg at 24 Weeks After the End of Switch Treatment Period: Switch Group

HBeAg seroconversion was defined as loss of HBeAg and the presence of hepatitis B envelope antibody (anti-HBe). The percentage of participants with HBeAg seroconversion at 24 weeks after EOT/POP was reported. The 95 percent (%) confidence interval (CI) was calculated by the Pearson-Clopper method. Intent-to-Treat (ITT) Population: All randomized participants regardless of treatment received.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBsAg at 24 Weeks After the End of Switch Treatment Period: Switch Group12.1 percentage of participants
Secondary

Percentage of Participants With Loss of HBsAg at EOT in Group C

The percentage of participants with loss of HBsAg at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBsAg at EOT in Group C0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With Loss of HBsAg at EOT/POP in Groups A and B

The percentage of participants with loss of HBsAg at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Loss of HBsAg at EOT/POP in Groups A and B10.9 percentage of participants95% Confidence Interval 5.56
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Loss of HBsAg at EOT/POP in Groups A and B0 percentage of participants95% Confidence Interval 0
Secondary

Percentage of Participants With Normal ALT at 24 Weeks After EOT in Group C

Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at 24 weeks after EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Normal ALT at 24 Weeks After EOT in Group C70 percentage of participants95% Confidence Interval 34.75
Secondary

Percentage of Participants With Normal ALT at 24 Weeks After EOT/POP in Groups A and B

Normal ALT was defined as ALT less than or equal to (≤) ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at 24 weeks after EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Normal ALT at 24 Weeks After EOT/POP in Groups A and B51.5 percentage of participants95% Confidence Interval 41.33
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Normal ALT at 24 Weeks After EOT/POP in Groups A and B12 percentage of participants95% Confidence Interval 4.53
Secondary

Percentage of Participants With Normal ALT at 24 Weeks After the End of Switch Treatment Period: Switch Group

Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: FU Week 24 (up to 72 weeks overall)

ArmMeasureValue (NUMBER)
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Normal ALT at 24 Weeks After the End of Switch Treatment Period: Switch Group42.4 percentage of participants
Secondary

Percentage of Participants With Normal ALT at EOT in Group C

Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT was reported. The 95% CI was calculated by the Pearson-Clopper method. Safety Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Normal ALT at EOT in Group C40 percentage of participants95% Confidence Interval 12.16
Secondary

Percentage of Participants With Normal ALT at EOT/POP in Groups A and B

Normal ALT was defined as ALT ≤ ULN, where each ULN was given by the laboratory at which the sample was analyzed. The percentage of participants with normal ALT at EOT/POP was reported. The 95% CI was calculated by the Pearson-Clopper method. ITT Population.

Time frame: Week 48

ArmMeasureValue (NUMBER)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisPercentage of Participants With Normal ALT at EOT/POP in Groups A and B18.8 percentage of participants95% Confidence Interval 11.72
Group B: Untreated Control Without Advanced FibrosisPercentage of Participants With Normal ALT at EOT/POP in Groups A and B22 percentage of participants95% Confidence Interval 11.53
Secondary

Quantitative HBeAg Level in Group C

Quantitative HBeAg at each visit was averaged among all participants and expressed in log10 PEIU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CBaseline2.344 log10 PEIU/mLStandard Deviation 0.981
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CWeek 121.62 log10 PEIU/mLStandard Deviation 1.288
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CWeek 241.802 log10 PEIU/mLStandard Deviation 1.14
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CWeek 361.561 log10 PEIU/mLStandard Deviation 1.178
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CWeek 481.429 log10 PEIU/mLStandard Deviation 1.259
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Group CFU Week 241.442 log10 PEIU/mLStandard Deviation 1.416
Secondary

Quantitative HBeAg Level in Groups A and B

Quantitative HBeAg at each visit was averaged among all participants and expressed in log10 Paul Ehrlich Institute units per milliliter (PEIU/mL). ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BBaseline2.736 log10 PEIU/mLStandard Deviation 0.502
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 122.09 log10 PEIU/mLStandard Deviation 0.879
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 241.865 log10 PEIU/mLStandard Deviation 0.956
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 361.604 log10 PEIU/mLStandard Deviation 0.991
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 481.466 log10 PEIU/mLStandard Deviation 1.053
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BFU Week 241.537 log10 PEIU/mLStandard Deviation 1.334
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 482.124 log10 PEIU/mLStandard Deviation 1.091
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BBaseline2.568 log10 PEIU/mLStandard Deviation 0.65
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 362.272 log10 PEIU/mLStandard Deviation 0.985
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 122.391 log10 PEIU/mLStandard Deviation 0.878
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BFU Week 242.217 log10 PEIU/mLStandard Deviation 1.395
Group B: Untreated Control Without Advanced FibrosisQuantitative HBeAg Level in Groups A and BWeek 242.36 log10 PEIU/mLStandard Deviation 0.896
Secondary

Quantitative HBsAg Level in Group C

Quantitative HBsAg at each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CBaseline4.225 log10 IU/mLStandard Deviation 0.518
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CWeek 123.829 log10 IU/mLStandard Deviation 0.589
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CWeek 243.515 log10 IU/mLStandard Deviation 1.113
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CWeek 363.282 log10 IU/mLStandard Deviation 1.263
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CWeek 483.215 log10 IU/mLStandard Deviation 1.352
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Group CFU Week 243.137 log10 IU/mLStandard Deviation 1.463
Secondary

Quantitative HBsAg Level in Groups A and B

Quantitative HBsAg at each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. All participants were included in the endpoint analysis. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Week 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BBaseline4.309 log10 IU/mLStandard Deviation 0.687
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 123.844 log10 IU/mLStandard Deviation 1.186
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 243.509 log10 IU/mLStandard Deviation 1.507
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 363.265 log10 IU/mLStandard Deviation 1.661
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 483.078 log10 IU/mLStandard Deviation 1.769
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BFU Week 243.37 log10 IU/mLStandard Deviation 1.63
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 484.215 log10 IU/mLStandard Deviation 0.718
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BBaseline4.383 log10 IU/mLStandard Deviation 0.721
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 364.272 log10 IU/mLStandard Deviation 0.726
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 124.299 log10 IU/mLStandard Deviation 0.809
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BFU Week 244.394 log10 IU/mLStandard Deviation 0.939
Group B: Untreated Control Without Advanced FibrosisQuantitative HBsAg Level in Groups A and BWeek 244.336 log10 IU/mLStandard Deviation 0.732
Secondary

Quantitative HBV DNA Level in Group C

Quantitative HBV DNA at each visit was averaged among all participants and expressed in log10 IU/mL. Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CBaseline7.866 log10 IU/mLStandard Deviation 0.977
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CWeek 125.782 log10 IU/mLStandard Deviation 1.771
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CWeek 245.599 log10 IU/mLStandard Deviation 2.386
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CWeek 365.2 log10 IU/mLStandard Deviation 2.451
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CWeek 485.319 log10 IU/mLStandard Deviation 2.747
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CFU Week 44.604 log10 IU/mLStandard Deviation 2.442
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CFU Week 124.252 log10 IU/mLStandard Deviation 2.596
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Group CFU Week 243.694 log10 IU/mLStandard Deviation 3.127
Secondary

Quantitative HBV DNA Level in Groups A and B

Quantitative HBV DNA at each visit was averaged among all participants and expressed in log10 IU/mL. ITT Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 12, 24, 36, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BFU Week 245.707 log10 IU/mLStandard Deviation 3.113
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BBaseline8.094 log10 IU/mLStandard Deviation 0.986
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 126.49 log10 IU/mLStandard Deviation 2.009
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 245.966 log10 IU/mLStandard Deviation 2.398
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 365.575 log10 IU/mLStandard Deviation 2.513
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 485.224 log10 IU/mLStandard Deviation 2.701
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BFU Week 45.739 log10 IU/mLStandard Deviation 2.935
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BFU Week 125.914 log10 IU/mLStandard Deviation 3.065
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 367.685 log10 IU/mLStandard Deviation 1.608
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BBaseline8.056 log10 IU/mLStandard Deviation 0.987
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BFU Week 247.2 log10 IU/mLStandard Deviation 2.506
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 127.909 log10 IU/mLStandard Deviation 1.267
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 487.551 log10 IU/mLStandard Deviation 1.761
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BWeek 247.857 log10 IU/mLStandard Deviation 1.327
Group B: Untreated Control Without Advanced FibrosisQuantitative HBV DNA Level in Groups A and BFU Week 127.214 log10 IU/mLStandard Deviation 2.46
Secondary

Quantitative Serum ALT Level in Group C

Quantitative ALT at each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). Safety Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CBaseline2.804 factor of ULNStandard Deviation 1.118
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 13.117 factor of ULNStandard Deviation 1.322
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 22.896 factor of ULNStandard Deviation 1.304
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 42.444 factor of ULNStandard Deviation 1.727
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 82.703 factor of ULNStandard Deviation 2.035
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 122.793 factor of ULNStandard Deviation 1.288
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 182.215 factor of ULNStandard Deviation 1.032
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 241.887 factor of ULNStandard Deviation 1.095
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 302.22 factor of ULNStandard Deviation 1.553
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 362.172 factor of ULNStandard Deviation 1.09
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 421.593 factor of ULNStandard Deviation 0.516
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CWeek 481.645 factor of ULNStandard Deviation 1.242
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CFU Week 41.136 factor of ULNStandard Deviation 0.506
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CFU Week 121.521 factor of ULNStandard Deviation 0.755
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Group CFU Week 241.549 factor of ULNStandard Deviation 1.595
Secondary

Quantitative Serum ALT Level in Groups A and B

Quantitative ALT at each visit was averaged among all participants and expressed as a factor of the laboratory-specific ULN (for example, 1 × ULN, 2 × ULN, 3 × ULN). ITT Population. The number of participants who provided evaluable data for the analysis at each timepoint (n) is shown in the table.

Time frame: Baseline; Weeks 1, 2, 4, 8, 12, 18, 24, 30, 36, 42, 48; FU Weeks 4, 12, 24 (up to 72 weeks overall)

Population: If number of participants equals 0, the calculation was not performed because no participants provided data for the visit.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 22.846 factor of ULNStandard Deviation 1.885
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BFU Week 41.303 factor of ULNStandard Deviation 1.74
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BFU Week 122.064 factor of ULNStandard Deviation 2.027
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BFU Week 241.477 factor of ULNStandard Deviation 1.625
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 362.45 factor of ULNStandard Deviation 1.856
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 43.343 factor of ULNStandard Deviation 2.455
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 83.262 factor of ULNStandard Deviation 2.797
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 123.189 factor of ULNStandard Deviation 3.06
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 183.036 factor of ULNStandard Deviation 2.389
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 242.753 factor of ULNStandard Deviation 2.725
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BBaseline2.779 factor of ULNStandard Deviation 2.483
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 302.587 factor of ULNStandard Deviation 2.128
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 13.427 factor of ULNStandard Deviation 2.687
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 422.316 factor of ULNStandard Deviation 1.429
Group A: PEG-IFN Monotherapy Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 482.122 factor of ULNStandard Deviation 1.389
Group B: Untreated Control Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BFU Week 241.7 factor of ULNStandard Deviation 1.385
Group B: Untreated Control Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BBaseline2.878 factor of ULNStandard Deviation 1.997
Group B: Untreated Control Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 242.401 factor of ULNStandard Deviation 2.638
Group B: Untreated Control Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 362.341 factor of ULNStandard Deviation 2.204
Group B: Untreated Control Without Advanced FibrosisQuantitative Serum ALT Level in Groups A and BWeek 481.954 factor of ULNStandard Deviation 1.371

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026