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Immuno & Safety Study of GSK Biologicals' Thio or Preservative Free Hepatitis B Vaccine in Subjects Aged 11-15 Yrs

Long-term Study of Immune Response Persistence of GSK Biologicals' 2-dose Thiomersal-free Engerix™-B and 3-dose Preservative-free Engerix™-B Vaccines in Subjects Aged 11-15 Yrs

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00343915
Enrollment
267
Registered
2006-06-23
Start date
2004-04-21
Completion date
2008-01-10
Last updated
2019-06-10

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

Conditions

Hepatitis B

Keywords

Persistence, Hepatitis B vaccine

Brief summary

To evaluate the persistence of antibodies against hepatitis B at 30, 42, 54 and 66 months after the first dose of the hepatitis B primary vaccination course. Subjects were aged 11 to 15 years at the time of the primary vaccination course. At the time of enrollment in the present long-term follow-up study subjects were aged 13 to 18 years. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Detailed description

All subjects who participated in the primary study, in which they received either 2 or 3 doses of GSK Biologicals hepatitis B vaccine, and who consented to participate in the long-term follow-up at Month 42 were contacted by the investigators. No additional subjects will be recruited during this long-term follow-up study and no vaccine will be administered.

Interventions

BIOLOGICALEngerix™-B (thiomersal-free) 20µg

In the primary study: 2 deep intramuscular injections (Months 0, & 6)

BIOLOGICAL10 μg Engerix™-B (preservative-free)

In the primary study: 3 deep intramuscular injections (months 0, 1 & 6)

BIOLOGICALplacebo

In the primary study: 1 deep intramuscular injection (month 1)

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
13 Years to 20 Years
Healthy volunteers
Yes

Inclusion criteria

* Subjects have participated in primary study HBV-280 * Written informed consent will be obtained from each subject and/ or parent or guardian of the subject before the blood-sampling visit of each year

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.At Month 7A seroprotected subject was defined as a subject with anti-HBs antibody concentrations ≥ 10 mIU/mL.
Antibody Titers Against Hepatitis-B Virus.At Month 30, Month 42, Month 54 and Month 66Antibody titers were summarized by Geometric Mean Concentrations (GMCs) with their 95% CIs.

Secondary

MeasureTime frameDescription
Number of Subjects With Any and Grade 3 Solicited Local SymptomsDuring the 4-day (Day 0-3) follow-up period after each vaccination and overallSolicited local symptoms assessed were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = spontaneously painful. Grade 3 redness/swelling = redness/swelling spreading beyond 50 millimeters (mm) of injection site.
Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms.During the 4-day (Day 0-3) follow-up period after each vaccination and overallSolicited general symptoms assessed were fatigue, gastrointestinal symptoms, headache, and fever. Any was defined as incidence of the specified symptoms regardless of intensity or relationship to study vaccine. Gastrointestinal symptoms included nausea, vomiting, diarrhea and abdominal pain. Grade 3 fever was defined as fever (axillary temperature) \> 38.5°C. Grade 3 symptoms were defined as symptoms which prevented normal everyday activities. Related = general symptom assessed by the investigator as causally related to the vaccination.
Antibody Titers Against Hepatitis-B Virus.At Months 1, 2, 6 and 7Antibody titers were summarized by Geometric Mean Concentrations (GMCs) with their 95% CIs.
Number of Subjects With Serious Adverse Events (SAEs)During the entire study period (Month 0 to Month 66)Serious adverse events (SAEs) assessed include medical occurrences that resulted in death, were life threatening, required hospitalization or prolongation of hospitalization, resulted in disability/incapacity or was a congenital anomaly/birth defect in the offspring of a study subject.
Number of Subjects With Serious Adverse Events (SAEs).At Month 30, Month 42, Month 54 & Month 66erious adverse events (SAEs) assessed include medical occurrences that resulted in death, were life threatening, required hospitalization or prolongation of hospitalization, resulted in disability/incapacity or was a congenital anomaly/birth defect in the offspring of a study subject.
Number of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).During the 31-day (Day 0-30) follow-up period after each vaccination and overallAn unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.
Number of Subjects Seroprotected for Anti-HBs Antibody.At Months 1, 2 and 6A seroprotected subject was defined as a subject with anti-HBs antibody concentrations ≥ 10 mIU/mL.

Countries

Australia, Belgium, Ukraine

Participant flow

Recruitment details

All subjects who participated in the primary vaccination study, in which they received either 2 or 3 doses of GSK Biologicals hepatitis B vaccine, and who consented to participate in the long-term follow-up were contacted by the investigators. No additional subjects were recruited during this long-term follow-up study.

Participants by arm

ArmCount
2-dose Engerix
subjects received 2 doses of adult (thiomersal-free) HBV formulation, one at 0 and 6 months, respectively and placebo (physiological saline) at 1 month.
258
3-dose Engerix
subjects received 3 doses of paediatric (preservative-free) HBV formulation one at 0, 1 and 6 months, respectively.
126
Total384

Withdrawals & dropouts

PeriodReasonFG000FG001
Primary StudyLost to Follow-up23
Primary StudyOther10
Primary StudyWithdrawal by Subject10

Baseline characteristics

Characteristic2-dose Engerix3-dose EngerixTotal
Age, Continuous12.9 years
STANDARD_DEVIATION 1.23
12.7 years
STANDARD_DEVIATION 1.32
12.8 years
STANDARD_DEVIATION 1.26
Sex: Female, Male
Female
132 Participants61 Participants193 Participants
Sex: Female, Male
Male
126 Participants65 Participants191 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 2570 / 125
other
Total, other adverse events
155 / 25774 / 125
serious
Total, serious adverse events
4 / 2571 / 125

Outcome results

Primary

Antibody Titers Against Hepatitis-B Virus.

Antibody titers were summarized by Geometric Mean Concentrations (GMCs) with their 95% CIs.

Time frame: At Month 30, Month 42, Month 54 and Month 66

Population: Long Term According-to-Protocol cohort for immunogenicity, including all subjects who returned at the considered follow-up time point and who complied with the protocol.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 30 (N=140, 64)229.0 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 42 (N=166, 80)159.7 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 54 (N=147, 76)123.6 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 66 (N=132, 70)82.1 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 66 (N=132, 70)225.2 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 30 (N=140, 64)708.3 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 54 (N=147, 76)277.6 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 42 (N=166, 80)417.9 mIU/mL
Primary

Number of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.

A seroprotected subject was defined as a subject with anti-HBs antibody concentrations ≥ 10 mIU/mL.

Time frame: At Month 7

Population: The ATP cohort for immunogenicity included all evaluable subjects who had post-vaccination immunogenicity results and who complied with the protocol, including the time schedule for vaccination and blood sample draw.

ArmMeasureValue (NUMBER)
2-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.233 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.111 Subjects
Primary

Number of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.

A seroprotected subject was defined as a subject with anti-HBs antibody concentrations ≥ 10 mIU/mL.

Time frame: At Month 30, Month 42, Month 54 and Month 66

Population: Long Term According-to-Protocol cohort for immunogenicity, including all subjects who returned at the considered follow-up time point and who complied with the protocol.

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 30 (N=140, 64)122 Subjects
2-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 42 (N=166, 80)139 Subjects
2-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 54 (N=147, 76)124 Subjects
2-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 66 (N=132, 70)105 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 66 (N=132, 70)64 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 30 (N=140, 64)62 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 54 (N=147, 76)72 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody.Month 42 (N=166, 80)74 Subjects
Secondary

Antibody Titers Against Hepatitis-B Virus.

Antibody titers were summarized by Geometric Mean Concentrations (GMCs) with their 95% CIs.

Time frame: At Months 1, 2, 6 and 7

Population: The ATP cohort for immunogenicity included all evaluable subjects who had post-vaccination immunogenicity results and who complied with the protocol, including the time schedule for vaccination and blood sample draw.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 6 (N=239, 113)18.8 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 2 (N=240, 113)17.6 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 7 (N=241, 113)2738.5 mIU/mL
2-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 1 (N=240, 112)28.8 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 7 (N=241, 113)7238.3 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 2 (N=240, 113)29.4 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 6 (N=239, 113)90.0 mIU/mL
3-dose EngerixAntibody Titers Against Hepatitis-B Virus.Month 1 (N=240, 112)28.7 mIU/mL
Secondary

Number of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).

An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.

Time frame: During the 31-day (Day 0-30) follow-up period after each vaccination and overall

Population: Total Cohort included all enrolled (i.e. randomized or vaccinated) subjects who received at least one vaccine dose and for whom data were available. No information regarding AEs was available for 1 subject in each group

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).any AE(s)112 Subjects
2-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).grade 3 AE(s)31 Subjects
2-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).related AE(s)9 Subjects
3-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).any AE(s)54 Subjects
3-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).grade 3 AE(s)15 Subjects
3-dose EngerixNumber of Subjects Reporting Any, Grade 3 and Related Unsolicited Adverse Event (AE).related AE(s)1 Subjects
Secondary

Number of Subjects Seroprotected for Anti-HBs Antibody.

A seroprotected subject was defined as a subject with anti-HBs antibody concentrations ≥ 10 mIU/mL.

Time frame: At Months 1, 2 and 6

Population: The ATP cohort for immunogenicity included all evaluable subjects who had post-vaccination immunogenicity results and who complied with the protocol, including the time schedule for vaccination and blood sample draw.

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 1 (N=240, 112)31 Subjects
2-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 2 (N=240, 113)27 Subjects
2-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 6 (N=239, 113)63 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 1 (N=240, 112)8 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 2 (N=240, 113)63 Subjects
3-dose EngerixNumber of Subjects Seroprotected for Anti-HBs Antibody.Month 6 (N=239, 113)99 Subjects
Secondary

Number of Subjects With Any and Grade 3 Solicited Local Symptoms

Solicited local symptoms assessed were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = spontaneously painful. Grade 3 redness/swelling = redness/swelling spreading beyond 50 millimeters (mm) of injection site.

Time frame: During the 4-day (Day 0-3) follow-up period after each vaccination and overall

Population: The ATP cohort for safety included all evaluable subjects, who received at least one dose of study vaccine according to their random assignment, with sufficient data to perform safety analysis, who did not receive a vaccine not specified or forbidden in the protocol.

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 2 (N=252, 119)42 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 1 (N=253, 121)6 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 1 (N=253, 121)30 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 1 (N=253, 121)0 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 1 (N=253, 121)18 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 1 (N=253, 121)2 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 1 (N=253, 121)121 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 2 (N=252, 119)3 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 2 (N=252, 119)15 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 2 (N=252, 119)1 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 2 (N=252, 119)8 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 2 (N=252, 119)1 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 3 (N=250, 118)106 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 3 (N=250, 118)4 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 3 (N=250, 118)29 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 3 (N=250, 118)0 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 3 (N=250, 118)14 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 3 (N=250, 118)0 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Across Doses (N=253, 121)155 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Across Doses (N=253, 121)8 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Across Doses (N=253, 121)50 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Across Doses (N=253, 121)0 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Across Doses (N=253, 121)27 Subjects
2-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Across Doses (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Across Doses (N=253, 121)15 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 1 (N=253, 121)44 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 3 (N=250, 118)35 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 1 (N=253, 121)3 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Across Doses (N=253, 121)74 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 1 (N=253, 121)10 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 3 (N=250, 118)1 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 1 (N=253, 121)1 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Across Doses (N=253, 121)1 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 1 (N=253, 121)8 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 3 (N=250, 118)11 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 1 (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Across Doses (N=253, 121)6 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Pain; Dose 2 (N=252, 119)38 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 3 (N=250, 118)0 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Pain; Dose 2 (N=252, 119)2 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Across Doses (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Dose 2 (N=252, 119)15 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 3 (N=250, 118)6 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Redness; Dose 2 (N=252, 119)0 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Redness; Across Doses (N=253, 121)28 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsAny Swelling; Dose 2 (N=252, 119)5 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 3 (N=250, 118)0 Subjects
3-dose EngerixNumber of Subjects With Any and Grade 3 Solicited Local SymptomsGrade 3 Swelling; Dose 2 (N=252, 119)0 Subjects
Secondary

Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms.

Solicited general symptoms assessed were fatigue, gastrointestinal symptoms, headache, and fever. Any was defined as incidence of the specified symptoms regardless of intensity or relationship to study vaccine. Gastrointestinal symptoms included nausea, vomiting, diarrhea and abdominal pain. Grade 3 fever was defined as fever (axillary temperature) \> 38.5°C. Grade 3 symptoms were defined as symptoms which prevented normal everyday activities. Related = general symptom assessed by the investigator as causally related to the vaccination.

Time frame: During the 4-day (Day 0-3) follow-up period after each vaccination and overall

Population: The ATP cohort for safety included all evaluable subjects, who received at least one dose of study vaccine according to their random assignment, with sufficient data to perform safety analysis, who did not receive a vaccine not specified or forbidden in the protocol.

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 2 (N=252, 119)37 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 1 (N=253, 121)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 1 (N=253, 121)29 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 1 (N=253, 121)26 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 1 (N=253, 121)3 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 1 (N=253, 121)11 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 1 (N=253, 121)57 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 1 (N=253, 121)0 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 1 (N=253, 121)33 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 1 (N=253, 121)4 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 1 (N=253, 121)0 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 1 (N=253, 121)3 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 1 (N=253, 121)50 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 2 (N=252, 119)2 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 2 (N=252, 119)23 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 2 (N=252, 119)20 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 2 (N=252, 119)0 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 2 (N=252, 119)7 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 2 (N=252, 119)40 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 2 (N=252, 119)0 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 2 (N=252, 119)24 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 2 (N=252, 119)5 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 2 (N=252, 119)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 2 (N=252, 119)5 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 3 (N=250, 118)49 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 3 (N=250, 118)3 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 3 (N=250, 118)30 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 3 (N=250, 118)17 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 3 (N=250, 118)3 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 3 (N=250, 118)6 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 3 (N=250, 118)36 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 3 (N=250, 118)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 3 (N=250, 118)22 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 3 (N=250, 118)13 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 3 (N=250, 118)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 3 (N=250, 118)7 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Across Doses (N=253, 121)77 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Across Doses (N=253, 121)4 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Across Doses (N=253, 121)51 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Across Doses (N=253, 121)36 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Across Doses (N=253,121)6 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Across Doses (N=253,121)17 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Across Doses (N=253, 121)78 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Across Doses (N=253, 121)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Across Doses (N=253, 121)49 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Across Doses (N=253, 121)17 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Across Doses (N=253, 121)1 Subjects
2-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Across Doses (N=253, 121)10 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Across Doses (N=253, 121)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 1 (N=253, 121)26 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 3 (N=250, 118)20 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 1 (N=253, 121)1 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Across Doses (N=253, 121)46 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 1 (N=253, 121)16 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 3 (N=250, 118)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 1 (N=253, 121)4 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Across Doses (N=253, 121)46 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 1 (N=253, 121)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 3 (N=250, 118)8 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 1 (N=253, 121)3 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Across Doses (N=253, 121)3 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 1 (N=253, 121)29 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 3 (N=250, 118)14 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 1 (N=253, 121)1 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Across Doses (N=253, 121)14 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 1 (N=253, 121)15 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 3 (N=250, 118)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 1 (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Across Doses (N=253, 121)30 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 1 (N=253, 121)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 3 (N=250, 118)6 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 1 (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Across Doses (N=253, 121)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Fatigue; Dose 2 (N=252, 119)18 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 3 (N=250, 118)20 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Fatigue; Dose 2 (N=252, 119)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Across Doses (N=253, 121)21 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Fatigue; Dose 2 (N=252, 119)13 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 3 (N=250, 118)1 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Gastrointestinal; Dose 2 (N=252, 119)7 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Across Doses (N=253, 121)10 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Dose 2 (N=252, 119)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 3 (N=250, 118)12 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Dose 2 (N=252, 119)5 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Gastrointestinal; Across Doses (N=253,121)2 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Headache; Dose 2 (N=252, 119)21 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 3 (N=250, 118)9 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Headache; Dose 2 (N=252, 119)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Across Doses (N=253, 121)30 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Headache; Dose 2 (N=252, 119)11 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 3 (N=250, 118)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Any Temperature; Dose 2 (N=252, 119)5 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Gastrointestinal; Across Doses (N=253,121)14 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Grade 3 Temperature; Dose 2 (N=252, 119)0 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 3 (N=250, 118)5 Subjects
3-dose EngerixNumber of Subjects With Any, Grade 3 and Related Solicited General Symptoms.Related Temperature; Dose 2 (N=252, 119)4 Subjects
Secondary

Number of Subjects With Serious Adverse Events (SAEs)

Serious adverse events (SAEs) assessed include medical occurrences that resulted in death, were life threatening, required hospitalization or prolongation of hospitalization, resulted in disability/incapacity or was a congenital anomaly/birth defect in the offspring of a study subject.

Time frame: During the entire study period (Month 0 to Month 66)

Population: Total Cohort included all enrolled (i.e. randomized or vaccinated) subjects who received at least one vaccine dose and for whom data were available. No information regarding AEs was available for 1 subject in each group.

ArmMeasureValue (NUMBER)
2-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs)4 Subjects
3-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs)1 Subjects
Secondary

Number of Subjects With Serious Adverse Events (SAEs).

erious adverse events (SAEs) assessed include medical occurrences that resulted in death, were life threatening, required hospitalization or prolongation of hospitalization, resulted in disability/incapacity or was a congenital anomaly/birth defect in the offspring of a study subject.

Time frame: At Month 30, Month 42, Month 54 & Month 66

Population: LT total cohort included all subjects who were included in the total cohort in the primary study and returned at the considered follow-up time point.

ArmMeasureGroupValue (NUMBER)
2-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 30 (N=179, 88)0 Participants
2-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 42 (N=174, 84)0 Participants
2-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 54 (N=166, 79)0 Participants
2-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 66 (N=158, 76)0 Participants
3-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 66 (N=158, 76)0 Participants
3-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 30 (N=179, 88)0 Participants
3-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 54 (N=166, 79)0 Participants
3-dose EngerixNumber of Subjects With Serious Adverse Events (SAEs).Month 42 (N=174, 84)0 Participants

Source: ClinicalTrials.gov · Data processed: Mar 30, 2026