Hepatitis A
Conditions
Keywords
HAVRIX™, Hepatitis A
Brief summary
The aim of this study is to evaluate the persistence of hepatitis A antibodies at 138, 150, 162, 174,186, 198, 210, 222, 234 and 246 months after subjects received their first dose of a 2 dose vaccination schedule of hepatitis A vaccine. This protocol posting deals with objectives & outcome measures of the extension phase at year 11 to 20. No additional subjects will be recruited during this long-term follow-up.
Detailed description
This is a long-term follow-up study at Years 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 after primary vaccination with GSK Biologicals' hepatitis A vaccine (two-dose schedule). To evaluate the long-term antibody persistence, volunteers will donate a blood sample at Years 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 after the first vaccine dose of the primary vaccination course to determine their anti-hepatitis A (anti-HAV) antibody concentrations. If a subject has become seronegative for anti-HAV antibodies during any of the long-term blood sampling time point (i.e. Months 138, 150, 162, 174,186, 198, 210, 222, 234 and 246), he/ she will be offered an additional vaccine dose. A blood sample will be taken on the day of the additional vaccination 14 days and one month after additional vaccination to evaluate the immune response following this vaccination. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007 and to extend the follow up until Year 20. The study has 10 phases: 100571, 100572, 100573, 100574, 100575, 110677, 110678, 110679, 110680, 110681.
Interventions
2 doses at 12 months interval
Sponsors
Study design
Eligibility
Inclusion criteria
* Subjects who had received at least one dose of the study vaccine in the primary study * Written informed consent will have been obtained from the subjects before the blood sampling visit of each year.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246 | Concentrations given as geometric mean concentration (GMC) expressed as milli-international unit per millilitre (mIU/mL). \*\* = Regarding Month 234 data, please note that there were 5 subjects for whom serum sample tube was broken and thus due to risk of contamination the test were not performed. Hence these subjects were not included in the LT-ATP cohort for immunogenicity analysis at Month 234. $ = Regarding Month 246 data, please note there was 1 subject for whom serum sample tube was broken and hence scrapped by laboratory. Hence this subject was not included in the LT-ATP cohort for immunogenicity analysis at Month 246. |
| Number of Seropositive Subjects Against Hepatitis A Virus | At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246 | A seropositive subject was a vaccinated subject whose concentrations for antibodies against hepatitis A virus (anti-HAV) were equal or above (\>=) the assay cut-off for seropositivity of 15 milli-international units per milliliter (mIU/mL). \*\* = Regarding Month 234 data, please note that there were 5 subjects for whom serum sample tube was broken and thus due to risk of contamination the test were not performed. Hence these subjects were not included in the LT-ATP cohort for immunogenicity analysis at Month 234. $ = Regarding Month 246 data, please note there was 1 subject for whom serum sample tube was broken and hence scrapped by laboratory. Hence this subject was not included in the LT-ATP cohort for immunogenicity analysis at Month 246. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Number of Subjects Reporting Solicited General Symptoms | During the 4-day (Days 0-3) follow-up period after additional vaccination | Solicited general symptoms assessed include fatigue, fever, gastrointestinal symptoms and headache. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198. |
| Number of Subjects Reporting Unsolicited Adverse Events (AE) | During the 30-day follow-up period after additional vaccination | An AE is 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. 4 subjects received additional vaccination at Month 186 and 1 at Month 198. |
| Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Before additional vaccination, 14 days after additional vaccination and 30 days after additional vaccination | Concentrations given as GMC expressed as mIU/mL. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198. Please note that value 14.9 means \<15. |
| Number of Subjects Reporting Serious Adverse Events (SAE) After Additional Vaccination | During the 30-day follow-up period after additional vaccination | An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above. 4 subjects received additional vaccination at Month 186 and 1 at Month 198. |
| Number of Subjects Reporting Pregnancies After Additional Vaccination | At Months 186 and 198 | The number of subjects with outcome of pregnancies reported among subjects who had received the additional vaccination was tabulated. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198. |
| Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246 | An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above |
| Number of Subjects Reporting Solicited Local Symptoms | During the 4-day (Days 0-3) follow-up period after additional vaccination | Solicited local symptoms assessed include pain, redness and swelling. Additional vaccination was given to 4 subjects at the Month 186 timepoint and to 1 subject at the Month 198 timepoint. |
Countries
Belgium
Participant flow
Recruitment details
Participant Flow and Baseline Measures are given for each of the follow-up time points- Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246. Note that not all subjects returned and participated in each of the intermediate follow-up time points.
Pre-assignment details
The Long-Term (LT) Total Cohort included all subjects who returned for the follow-up and who belonged to the Total Cohort in the primary study. The Long Term According-to-Protocol (LT-ATP) cohort for immunogenicity included subjects who returned for the follow-up and who were included in the ATP cohort for immunogenicity of the primary study.
Participants by arm
| Arm | Count |
|---|---|
| Havrix Group Subjects who received during the primary study 2 doses of Havrix™ at Day 0 and at Month 12. | 135 |
| Total | 135 |
Baseline characteristics
| Characteristic | Havrix Group |
|---|---|
| Age, Continuous | 46.3 Years STANDARD_DEVIATION 5.35 |
| Sex: Female, Male Female | 98 Participants |
| Sex: Female, Male Male | 29 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | — / — |
| other Total, other adverse events | 2 / 5 |
| serious Total, serious adverse events | 0 / 135 |
Outcome results
Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration
Concentrations given as geometric mean concentration (GMC) expressed as milli-international unit per millilitre (mIU/mL). \*\* = Regarding Month 234 data, please note that there were 5 subjects for whom serum sample tube was broken and thus due to risk of contamination the test were not performed. Hence these subjects were not included in the LT-ATP cohort for immunogenicity analysis at Month 234. $ = Regarding Month 246 data, please note there was 1 subject for whom serum sample tube was broken and hence scrapped by laboratory. Hence this subject was not included in the LT-ATP cohort for immunogenicity analysis at Month 246.
Time frame: At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246
Population: Analysis was performed on the Long Term According-to-Protocol (LT-ATP) cohort for analysis of immunogenicity, on subjects with available data for the defined timepoint.~\* The laboratory assay was changed at Month 138, thus the blood samples were re-tested with the old assay for the sake of bridging.
| Arm | Measure | Group | Value (GEOMETRIC_MEAN) |
|---|---|---|---|
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 138 (N=79) | 748.1 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 138 (N=85)* | 378.6 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 150 (N=93) | 419.3 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 162 (N=101) | 342.2 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 174 (N=102) | 318.9 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 186 (N=98) | 353.1 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 198 (N=101) | 339.9 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 210 (N=91) | 369.3 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 222 (N=86) | 340.1 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 234 (N=79)** | 283.3 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Month 246 (N=85)$ | 317.3 mIU/mL |
Number of Seropositive Subjects Against Hepatitis A Virus
A seropositive subject was a vaccinated subject whose concentrations for antibodies against hepatitis A virus (anti-HAV) were equal or above (\>=) the assay cut-off for seropositivity of 15 milli-international units per milliliter (mIU/mL). \*\* = Regarding Month 234 data, please note that there were 5 subjects for whom serum sample tube was broken and thus due to risk of contamination the test were not performed. Hence these subjects were not included in the LT-ATP cohort for immunogenicity analysis at Month 234. $ = Regarding Month 246 data, please note there was 1 subject for whom serum sample tube was broken and hence scrapped by laboratory. Hence this subject was not included in the LT-ATP cohort for immunogenicity analysis at Month 246.
Time frame: At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246
Population: Analysis was performed on the Long Term According-to-Protocol (LT-ATP) cohort for analysis of immunogenicity, on subjects with available data for the defined timepoint. \*The laboratory assay was changed at Month 138, thus the blood samples were re-tested with the old assay for the sake of bridging.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 138 (N=85)* | 82 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 138 (N=79) | 77 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 150 (N=93) | 90 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 162 (N=101) | 98 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 174 (N=102) | 100 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 186 (N=98) | 95 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 198 (N=101) | 97 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 210 (N=91) | 88 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 222 (N=86) | 86 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 234 (N=79)** | 79 Subjects |
| Havrix Group | Number of Seropositive Subjects Against Hepatitis A Virus | Month 246 (N=85)$ | 85 Subjects |
Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration
Concentrations given as GMC expressed as mIU/mL. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198. Please note that value 14.9 means \<15.
Time frame: Before additional vaccination, 14 days after additional vaccination and 30 days after additional vaccination
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 4 Month 186 day 14 | 1636 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 4 Month 186 day 30 | 2051 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 5 Month 198 before | 16 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 5 Month 198 day 14 | 3222 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 1 Month 186 before | 14.9 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 1 Month 186 day 14 | 15 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 1 Month 186 day 30 | 26 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 2 Month 186 before | 14.9 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 2 Month 186 day 14 | 453 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 2 Month 186 day 30 | 787 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 3 Month 186 before | 15 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 3 Month 186 day 14 | 3102 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 3 Month 186 day 30 | 3819 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 4 Month 186 before | 16 mIU/mL |
| Havrix Group | Anti-hepatitis A Virus (Anti-HAV) Antibody Concentration | Subject 5 Month 198 day 30 | 4894 mIU/mL |
Number of Subjects Reporting Pregnancies After Additional Vaccination
The number of subjects with outcome of pregnancies reported among subjects who had received the additional vaccination was tabulated. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198.
Time frame: At Months 186 and 198
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Pregnancies After Additional Vaccination | Subjects with pregnancy - At Month 186 (N=4) | 0 Subject |
| Havrix Group | Number of Subjects Reporting Pregnancies After Additional Vaccination | Subjects with pregnancy - At Month 198 (N=1) | 0 Subject |
Number of Subjects Reporting Serious Adverse Events (SAE) After Additional Vaccination
An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above. 4 subjects received additional vaccination at Month 186 and 1 at Month 198.
Time frame: During the 30-day follow-up period after additional vaccination
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) After Additional Vaccination | Month 186 (N=4) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) After Additional Vaccination | Month 198 (N=1) | 0 subjects |
Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy
An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above
Time frame: At Months 138, 150, 162, 174, 186, 198, 210, 222, 234 and 246
Population: Analysis was performed on the Long Term Total cohort, on subjects with available data for the defined timepoint.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 150 (N=117) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 162 (N=127) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 174 (N=127) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 186 (N=129) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 246 (N=116) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 138 (N=107) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 198 (N=135) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 210 (N=124) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 222 (N=114) | 0 Subjects |
| Havrix Group | Number of Subjects Reporting Serious Adverse Events (SAE) Assessed by the Investigator as Related to Primary Study Vaccination, Procedures or Lack of Vaccine Efficacy | Month 234 (N=110) | 0 Subjects |
Number of Subjects Reporting Solicited General Symptoms
Solicited general symptoms assessed include fatigue, fever, gastrointestinal symptoms and headache. 4 subjects received additional vaccination at Month 186 and 1 subject at Month 198.
Time frame: During the 4-day (Days 0-3) follow-up period after additional vaccination
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Fatigue Month 186 (N=4) | 2 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Fever Month 186 (N=4) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Gastrointestinal Month 186 (N=4) | 1 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Headache Month 186 (N=4) | 1 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Fatigue Month 198 (N=1) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Fever Month 198 (N=1) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Gastrointestinal Month 198 (N=1) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited General Symptoms | Headache Month 198 (N=1) | 0 subjects |
Number of Subjects Reporting Solicited Local Symptoms
Solicited local symptoms assessed include pain, redness and swelling. Additional vaccination was given to 4 subjects at the Month 186 timepoint and to 1 subject at the Month 198 timepoint.
Time frame: During the 4-day (Days 0-3) follow-up period after additional vaccination
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Pain Month 198 (N=1) | 1 subjects |
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Redness Month 198 (N=1) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Swelling Month 198 (N=1) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Pain Month 186 (N=4) | 2 subjects |
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Redness Month 186 (N=4) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Solicited Local Symptoms | Swelling Month 186 (N=4) | 0 subjects |
Number of Subjects Reporting Unsolicited Adverse Events (AE)
An AE is 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. 4 subjects received additional vaccination at Month 186 and 1 at Month 198.
Time frame: During the 30-day follow-up period after additional vaccination
Population: Analysis was performed on the Long Term Total cohort, only on subjects who received an additional vaccine dose during the current long-term follow-up study. If a subject became seronegative (\< 15 mIU/mL) at any of the long-term blood sampling timepoint, he/she was offered an additional vaccine dose.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Havrix Group | Number of Subjects Reporting Unsolicited Adverse Events (AE) | Month 186 (N=4) | 0 subjects |
| Havrix Group | Number of Subjects Reporting Unsolicited Adverse Events (AE) | Month 198 (N=1) | 0 subjects |