Trial Outcomes & Findings for A Follow-up Extension Study to Evaluate the Persistence of Immune Response to GSK Biologicals' HPV Vaccine in Healthy Chinese Female Subjects Who Received Three Doses of the Vaccine in the HPV-058 Study (NCT NCT03355820)

Results Overview

A seropositive subject is defined as a subject whose antibody concentration is equal to or above the cut-off value of 19 Enzyme Linked Immunosorbent Assay units per milliliter (EL.U/mL).

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

228 participants

Primary outcome timeframe

At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study)

Results posted on

2020-11-19

Participant Flow

This study was conducted at a single center in China.

228 subjects were included in the Enrolled Set, 1 subject was excluded from all statistical analyses, thus 227 subjects formed the Exposed Set.

Participant milestones

Participant milestones
Measure	HPV Group Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Overall Study STARTED	227
Overall Study COMPLETED	227
Overall Study NOT COMPLETED	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Follow-up Extension Study to Evaluate the Persistence of Immune Response to GSK Biologicals' HPV Vaccine in Healthy Chinese Female Subjects Who Received Three Doses of the Vaccine in the HPV-058 Study

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	HPV Group n=227 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Age, Continuous	21.6 Years STANDARD_DEVIATION 2.3 • n=5 Participants
Sex: Female, Male Female	227 Participants n=5 Participants
Sex: Female, Male Male	0 Participants n=5 Participants
Race/Ethnicity, Customized Asian - East Asian Heritage	227 Participants n=5 Participants

PRIMARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study)

Population: The analysis was performed on the Per-Protocol Set (PPS) for analysis of immunogenicity, which included all evaluable subjects who were included in the according to protocol (ATP) immunogenicity analysis of the primary vaccination study HPV-058 (NCT00996125), and with serology results available at this blood sampling time point.

A seropositive subject is defined as a subject whose antibody concentration is equal to or above the cut-off value of 19 Enzyme Linked Immunosorbent Assay units per milliliter (EL.U/mL).

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Number of Seropositive Subjects for Anti-HPV-16 Antibodies at Day 1 in HPV-093 (NCT03355820) Study	223 Participants

PRIMARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study)

Population: The analysis was performed on the Per-Protocol Set (PPS) for analysis of immunogenicity, which included all evaluable subjects who were included in the according to protocol (ATP) immunogenicity analysis of the primary vaccination study HPV-058 (NCT00996125), and with serology results available at this blood sampling time point.

A seropositive subject is defined as a subject whose antibody concentration is equal to or above the cut-off value of 18 EL.U/mL.

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Number of Seropositive Subjects for Anti-HPV-18 Antibodies at Day 1 in HPV-093 (NCT03355820) Study	223 Participants

PRIMARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study)

Population: The analysis was performed on the Per-Protocol Set (PPS) for analysis of immunogenicity, which included all evaluable subjects who were included in the according to protocol (ATP) immunogenicity analysis of the primary vaccination study HPV-058 (NCT00996125), and with serology results available at this blood sampling time point.

Anti-HPV-16 antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in EL.U/mL.

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Anti-HPV-16 Antibody Concentrations at Day 1 in HPV-093 (NCT03355820) Study	1236.3 EL.U/mL Interval 1121.8 to 1362.4

PRIMARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study)

Population: The analysis was performed on the Per-Protocol Set (PPS) for analysis of immunogenicity, which included all evaluable subjects who were included in the according to protocol (ATP) immunogenicity analysis of the primary vaccination study HPV-058 (NCT00996125), and with serology results available at this blood sampling time point.

Anti-HPV-18 antibody concentrations are presented as GMCs, expressed in EL.U/mL.

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Anti-HPV-18 Antibody Concentrations at Day 1 in HPV-093 (NCT03355820) Study	535.6 EL.U/mL Interval 478.6 to 599.4

SECONDARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study) and at Year 6 in HPV-039 (NCT00779766) study

Population: The analysis was performed on the PPS for analysis of immunogenicity in HPV-093 study and on the ATP cohort for analysis of immunogenicity which included all evaluable subjects in the immunogenicity subset of HPV-039 study. For Year 6 data in HPV-039 study, please refer to the Outcome measure 38 in NCT00779766 record.

A seropositive subject is defined as a subject whose antibody concentration is equal to or above the cut-off value of 19 EL.U/mL. The number of seropositive subjects at Day 1 in the present study was compared with the number of seropositive subjects from the immunogenicity subset in HPV-039 (NCT00779766) study at Year 6. Data corresponding to Day 1 time point of the present study can also be found in the primary outcome measure. Data at Year 6 in subjects from the immunogenicity subset in HPV-039 study can be found in the respective NCT record NCT00779766 (please refer to Outcome measure 38, Row "≥19 EL.U/mL, sero-, \[Month 72\]" and Row "≥19 EL.U/mL, sero+, \[Month 72\]").

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Number of Seropositive Subjects for Anti-HPV-16 Antibodies at Day 1 in HPV-093 (NCT03355820) and at Year 6 in HPV-039 (NCT00779766) Studies	223 Participants

SECONDARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study) and at Year 6 in HPV-039 (NCT00779766) study

Population: The analysis was performed on the PPS for analysis of immunogenicity in HPV-093 study and on the ATP cohort for analysis of immunogenicity which included all evaluable subjects in the immunogenicity subset of HPV-039 study. For Year 6 data in HPV-039 study, please refer to the Outcome measure 39 in NCT00779766 record.

A seropositive subject is defined as a subject whose antibody concentration is equal to or above the cut-off value of 18 EL.U/mL. The number of seropositive subjects at Day 1 in the present study was compared with the number of seropositive subjects from the immunogenicity subset in HPV-039 (NCT00779766) study at Year 6. Data corresponding to Day 1 time point of the present study can also be found in the primary outcome measure. Data at Year 6 in subjects from the immunogenicity subset in HPV-039 study can be found in the respective NCT record NCT00779766 (please refer to Outcome measure 39, Row "≥ 18 EL.U/mL, sero- \[Month 72\]" and Row "≥ 18 EL.U/mL, sero+ \[Month 72\]).

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Number of Seropositive Subjects for Anti-HPV-18 Antibodies at Day 1 in HPV-093 (NCT03355820) and at Year 6 in HPV-039 (NCT00779766) Studies	223 Participants

SECONDARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study) and at Year 6 in HPV-039 (NCT00779766) study

Population: The analysis was performed on the PPS for analysis of immunogenicity in HPV-093 study and on the ATP cohort for analysis of immunogenicity which included all evaluable subjects in the immunogenicity subset of HPV-039 study. For Year 6 data in HPV-039 study, please refer to the Outcome measure 40 in NCT00779766 record.

Anti-HPV-16 antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in EL.U/mL. Anti-HPV-16 antibody concentrations at Day 1 in the present study were compared with the anti-HPV-16 antibody concentrations obtained as per the analysis performed on the immunogenicity subset in HPV-039 (NCT00779766) study at Year 6. Data corresponding to Day 1 time point of the present study can also be found in the primary outcome measure. Data at Year 6 in subjects from the immunogenicity subset in HPV-039 study can be found in the respective NCT record NCT00779766 (please refer to Outcome measure 40, Row "HPV-16, sero-, \[Month 72\]" and Row "HPV-16, sero+, \[Month 72\]").

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Concentration of Antibodies Against HPV-16 at Day 1 in HPV-093 (NCT03355820) and at Year 6 in HPV-039 (NCT00779766) Studies	1236.3 EL.U/mL Interval 1121.8 to 1362.4

SECONDARY outcome

Timeframe: At Day 1 in HPV-093 (NCT03355820) study (i.e. 7 to 8 years after completion of the vaccination schedule in HPV-058 [NCT00996125] study) and at Year 6 in HPV-039 (NCT00779766) study

Population: The analysis was performed on the PPS for analysis of immunogenicity in HPV-093 study and on the ATP cohort for analysis of immunogenicity which included all evaluable subjects in the immunogenicity subset of HPV-039 study. For Year 6 data in HPV-039 study, please refer to the Outcome measure 40 in NCT00779766 record.

Anti-HPV-18 antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in EL.U/mL. Anti-HPV-18 antibody concentrations at Day 1 in the present study were compared with the anti-HPV-18 antibody concentrations obtained as per the analysis performed on the immunogenicity subset in HPV-039 (NCT00779766) study at Year 6. Data corresponding to Day 1 time point of the present study can also be found in the primary outcome measure. Data at Year 6 in subjects from the immunogenicity subset in HPV-039 study can be found in the respective NCT record NCT00779766 (please refer to Outcome measure 40, Row "HPV-18, sero-, \[Month 72\]" and Row "HPV-18, sero+, \[Month 72\]").

Outcome measures

Outcome measures
Measure	HPV Group n=223 Participants Healthy Chinese female subjects, including and above 17 years of age at the time of enrollment, who received all three doses of the Cervarix vaccine in the HPV-058 (NCT00996125) primary study.
Concentration of Antibodies Against HPV-18 at Day 1 in HPV-093 (NCT03355820) and at Year 6 in HPV-039 (NCT00779766) Studies	535.6 EL.U/mL Interval 478.6 to 599.4

Adverse Events

HPV Group

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

GSK Response Center

GlaxoSmithKline

Phone: 866-435-7343

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee GSK agreements may vary with individual investigators, but will not prohibit any investigator from publishing. GSK supports the publication of results from all centers of a multi-center trial but requests that reports based on single-site data not precede the primary publication of the entire clinical trial.
Publication restrictions are in place

Restriction type: OTHER