Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in SituPhase 3NCT03493542

A Study to Evaluate the Immunogenicity, Safety and Tolerability of Quadrivalent Human Papillomavirus Vaccine (V501) in Chinese Girls Aged 9-19 Years and Young Women Aged 20-26 Years (V501-213)

A Phase 3 study testing V501 in people with Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in Situ, run by Merck Sharp & Dohme LLC at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record

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Trial summary

Who is it for?: Ages 9 to 26 years, women onlyHealthy volunteers can take part
Conditions the study is for: Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in Situ
What is being tested?: V501
Type of treatment: Vaccines, Injection or infusion
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 766 participants
Where: 1 siteChina
Study dates: 31 Aug 2018to 30 Oct 2023
Phase: Phase 3
Are there results?: Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 9 to 26 years
Women only
Healthy volunteers accepted
Child, Adult

Who may be able to join

Not pregnant and 1) not a woman of childbearing potential (WOCBP), or 2) a WOCBP who has not had sex with males or has had sex with males and used effective contraception since the first day of participant's last menstrual period through Day 1 and understands and agrees that during the study she should not have sexual intercourse with males without effective contraception (the rhythm method, withdrawal, and emergency contraception are not acceptable methods per the protocol).
Participant and participant's parent or guardian (participants aged 9-17 years only) provided written informed consent/assent.
Provided a primary and alternative telephone for follow-up purposes.
Extension Stage: participant was enrolled in the 9-19 years old group, received 3 doses of V501 in the Base Stage, and participant and participant's legally acceptable representative (if applicable) provided written informed consent/assent for the study extension.

Who cannot join

History of severe allergic reaction that required medical intervention.
Allergic to any vaccine component, including aluminum, yeast, or Benzonase® (nuclease).
Known thrombocytopenia or any coagulation disorder that would contraindicate intramuscular injections.
Currently immunocompromised or was diagnosed as having congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus (SLE), rheumatoid arthritis, juvenile rheumatoid arthritis (JRA), inflammatory bowel disease, or other autoimmune condition.
History of splenectomy.
Any condition which in the opinion of the investigator might interfere with the evaluation of the study objectives.

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History of recent or ongoing alcohol or other drug abuse.
History of a positive test for HPV.
Any history of abnormal Pap test.
History of external genital wart, vulvar intraepithelial neoplasia (VIN), vaginal intraepithelial neoplasia (VaIN), vulvar cancer or vaginal cancer.
Undergone hysterectomy (either vaginal or total abdominal hysterectomy).
Receiving or has received in the year prior to Day 1 vaccination an excluded immunosuppressive therapy. A participant will be excluded if she is currently receiving steroid therapy, has recently received such therapy, or has received 2 or more courses of corticosteroids (orally or parenterally) lasting at least 1 week in duration in the year prior to Day 1 vaccination. Participants using inhaled, nasal or topical steroids are considered eligible for the study.
Received immune globulin product or blood-derived product within 6 months prior to Day 1 vaccination, or plans to receive any such product during the study.
Received a marketed HPV vaccine, or has participated in an HPV vaccine clinical trial and has received either active agent or placebo.
Received inactivated or recombinant vaccines within 14 days prior to Day 1 vaccination or receipt of live vaccines within 21 days prior to Day 1 vaccination.
Concurrently enrolled in a clinical study of investigational agents.
Had >4 lifetime sexual partners.
Unlikely to adhere to the study procedures, keep appointments, or is planning to permanently relocate from the area prior to the completion of the study or to leave for an extended period of time when study visits would need to be scheduled.
An immediate family member who is investigational site or sponsor staff directly involved with this study.
Extension Stage: reported overdose or received non-study HPV vaccine during the Base Stage.

Trial locations and contacts

1 site in 1 country.

China1 site

Yangchun Center For Disease Prevention And Control ( Site 0003)
Yangchun, Guangdong, 529600

Other trials in China

About this study

Official title: A Phase 3 Open-Label Clinical Trial to Study the Immunogenicity, Safety and Tolerability of Recombinant Human Papillomavirus Quadrivalent (Types 6, 11, 16, 18) Vaccine (V501) in Chinese Girls Aged 9-19 Years and Young Women Aged 20-26 Years

This study is designed to evaluate the immunogenicity, safety, and tolerability of Gardasil® (quadrivalent human papillomavirus [qHPV] vaccine, V501) in Chinese girls aged 9-19 years and young women aged 20-26 years. The primary hypothesis of the study states that at 1 month postdose 3, a 3-dose regimen of V501 induces non-inferior geometric mean titers (GMTs) for serum anti-HPV 6, anti-HPV 11, anti-HPV 16, anti-HPV 18 in girls aged 9-19 years compared to young women aged 20-26 years.

Read the detailed description

The study consists of a Base Stage wherein Chinese girls aged 9-19 years and young women aged 20-26 years receive a 3-dose regimen of V501 and are followed up to 1 month postdose 3 (Month 7). Participants aged 9-19 years who received 3 doses of V501 in the Base Stage will be eligible to participate in the Extension Stage and will be followed up to Month 60. No study vaccine will be administered during the Extension Stage.

Conditions: Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in Situ
Being tested: V501
Medical subject headings: Uterine Cervical Dysplasia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

V501Biological
Also called (Gardasil®) human papillomavirus (types 6, 11, 16, 18) recombinant vaccine, qHPV
0.5 mL intramuscular injection in the deltoid muscle at Day 1, Month 2, and Month 6

Study groups in NCT03493542
Study group	Role	What they receive
Chinese Girls Aged 9 to 19 Years	Experimental	Participants will receive V501 0.5 mL intramuscular injection at Day 1, Month 2, and Month 6 Receives: Biological: V501
Chinese Young Women Aged 20 to 26 Years	Active comparator	Participants will receive V501 0.5 mL intramuscular injection at Day 1, Month 2, and Month 6 Receives: Biological: V501

What is being measured

The primary outcome is the main question the study is designed to answer.

Base Stage: Geometric Mean Titers for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18: Competitive Luminex Immunoassay (cLIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as milli Merck Units/milliliter (mMU/mL).
Measured: Month 7 (1 month postdose 3)
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 12 Assessed by cLIA
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Measured: Month 12 post-vaccination 1
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 24 Assessed by cLIA
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Measured: Month 24 post-vaccination 1
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 36 Assessed by cLIA
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Measured: Month 36 post-vaccination 1
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 48 Assessed by cLIA
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Measured: Month 48 post-vaccination 1
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 60 Assessed by cLIA
Serum antibody titers (Geometric mean titers) for HPV virus-like particles (VLPs) Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Measured: Month 60 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 12 Assessed by cLIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Measured: Month 12 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 24 Assessed by cLIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Measured: Month 24 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 36 Assessed by cLIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Measured: Month 36 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 48 Assessed by cLIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Measured: Month 48 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 60 Assessed by cLIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Measured: Month 60 post-vaccination 1
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 12 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Measured: Month 12 post-vaccination 1
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 24 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Measured: Month 24 post-vaccination 1
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 36 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Measured: Month 36 post-vaccination 1
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 48 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA.
Measured: Month 48 post-vaccination 1
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 60 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA.
Measured: Month 60 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 12 Assessed by IgG LIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Measured: Month 12 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 24 Assessed by IgG LIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Measured: Month 24 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 36 Assessed by IgG LIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Measured: Month 36 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 48 Assessed by IgG LIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Measured: Month 48 post-vaccination 1
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 60 Assessed by IgG LIA
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Measured: Month 60 post-vaccination 1

Secondary outcomes (9)

Base Stage: Percentage of Participants With Seroconversion for HPV Types 6, 11, 16, and 18: cLIA
Seroconversion is defined as changing serostatus from seronegative at Day 1 to seropositive at 1 month post dose 3. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as milli Merck Units/milliliter (mMU/mL).
Measured: Month 7 (1 month postdose 3)
Base Stage: Geometric Mean Titers for Serum Anti-HPV Types 6, 11, 16, and 18: IgG LIA
Antibodies to HPV Types 6, 11, 16, and 18 were measured using an IgG LIA. Antibody titers were expressed as milli Merck Units/milliliter (mMU/mL).
Measured: Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants With Seroconversion for HPV Types 6, 11, 16, and 18: IgG LIA
The percentage of participants who seroconverted to each of HPV Types 6, 11, 16, and 18 was assessed. Antibodies were measured using IgG LIA.
Measured: Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants Who Experienced a Solicited Injection-site Adverse Event (AE)
An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. Solicited injection-site AEs included injection-site redness, swelling, induration, pain, and pruritus.
Measured: Up to 15 days after any vaccination
Base Stage: Percentage of Participants Participants Who Experienced a Solicited Systemic AE
An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. Solicited systemic AEs included hypersensitivity, headache, fatigue, vomiting, nausea, diarrhea, myalgia, pyrexia, and cough.
Measured: Up to 15 days after any vaccination
Base Stage: Percentage of Participants Who Experienced a Serious Adverse Event (SAE)
An SAE is an AE that results in death, is life threatening, requires hospitalization or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, according to medical or scientific judgment, may jeopardize the participant or requires medical or surgical intervention to prevent one of the other outcomes listed in the above definition.
Measured: Up to Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants Who Experienced an AE
An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment
Measured: Up to 31 days after any vaccination
Base Stage: Maximum Axillary Temperature: Merck Sharp & Dohme (MSD) Criteria
In the global studies, fever is defined as an oral temperature of ≥37.8°C or 100.0°F, which is equivalent to axillary temperature of ≥37.2°C, while the definition of fever is axillary temperature of ≥37.1°C in Chinese criteria. To be compliant to Chinese criteria, axillary temperatures of ≥37.1°C was considered as a fever in this study. Body temperature readings assessed orally were converted to the axillary equivalent. The percentage of participants with a maximum axillary or converted axillary temperature was summarized by temperature range.
Measured: Up to 5 days after any vaccination
Extension Stage: Percentage of Participants Who Experienced an SAE
The percentage of participants with an SAE will be assessed. An SAE is an AE that results in death, is life threatening, requires hospitalization or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, according to medical or scientific judgment, may jeopardize the participant or requires medical or surgical intervention to prevent one of the other outcomes listed in the above definition.
Measured: Month 7 up to Month 60

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

31 Aug 201830 Oct 2023

First posted10 Apr 2018
Study start31 Aug 2018
Primary completion30 Oct 2023
Study completion30 Oct 2023

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
Publications (1)Papers the sponsor has linked to this study.
Other trials for Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in SituStudies of the same condition, open and under way.
More trials run by Merck Sharp & Dohme LLCThe sponsor's other registered studies.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase 3
Primary purpose: Prevention
Allocation: Non-randomised
Intervention model: Parallel groups
Masking: None (open label)
Enrolment: 766 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT03493542
Sponsor's protocol ID: V501-213
Other IDs: V501-213, 2023-001144-29, 2023
Status last verified: Dec 2024
First submitted: 4 Apr 2018
Last updated: 31 Dec 2024
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: No
FDA-regulated drug: Yes
FDA-regulated device: No
Individual data sharing: Yes: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Publications

Huang Z, He J, Su J, Ou Z, Liu G, Fu R, Shou Q, Zheng M, Group T, Luxembourg A, Liao X, Zhang J. Immunogenicity and safety of the quadrivalent human papillomavirus vaccine in Chinese females aged 9 to 26 years: A phase 3, open-label, immunobridging study. Vaccine. 2021 Jan 22;39(4):760-766. doi: 10.1016/j.vaccine.2020.11.008. Epub 2020 Nov 22.
PubMed 33239228

Study at a glance

From the registry record, last updated by the sponsor on 31 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: A Phase 3 Open-Label Clinical Trial to Study the Immunogenicity, Safety and Tolerability of Recombinant Human Papillomavirus Quadrivalent (Types 6, 11, 16, 18) Vaccine (V501) in Chinese Girls Aged 9-19 Years and Young Women Aged 20-26 Years
ClinicalTrials.gov ID: NCT03493542
Acronym / sponsor ID: V501-213
Conditions: Prevention of HPV Types 16- and 18-related Cervical Cancer, Cervical Intraepithelial Neoplasia (CIN) 1/2/3, and Cervical Adenocarcinoma in Situ
Phase: Phase 3
Study type: Interventional
Recruitment status: Completed
Enrolment: 766 participants (actual)
Lead sponsor: Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
Study start: 31 Aug 2018 (actual)
Primary completion: 30 Oct 2023 (actual)
Study completion: 30 Oct 2023 (actual)
First posted: 10 Apr 2018 (actual)
Results: Posted 4 May 2020

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Detailed description

Study design

Primary purpose: Prevention
Allocation: Non-randomised
Intervention model: Parallel groups
Masking: None (open label)
Number of arms: 2

Arm	Type	Receives
Chinese Girls Aged 9 to 19 Years	Experimental	Biological: V501Participants will receive V501 0.5 mL intramuscular injection at Day 1, Month 2, and Month 6
Chinese Young Women Aged 20 to 26 Years	Active comparator	Biological: V501Participants will receive V501 0.5 mL intramuscular injection at Day 1, Month 2, and Month 6

Who may qualify

Ages: 9 to 26 years
Sex: Female only
Healthy volunteers: Accepted
Age groups: Child, Adult

Key inclusion criteria (4 listed)

Not pregnant and 1) not a woman of childbearing potential (WOCBP), or 2) a WOCBP who has not had sex with males or has had sex with males and used effective contraception since the first day of participant's last menstrual period through Day 1 and understands and agrees that during the study she should not have sexual intercourse with males without effective contraception (the rhythm method, withdrawal, and emergency contraception are not acceptable methods per the protocol).
Participant and participant's parent or guardian (participants aged 9-17 years only) provided written informed consent/assent.
Provided a primary and alternative telephone for follow-up purposes.
Extension Stage: participant was enrolled in the 9-19 years old group, received 3 doses of V501 in the Base Stage, and participant and participant's legally acceptable representative (if applicable) provided written informed consent/assent for the study extension.

Key exclusion criteria (20 listed)

History of severe allergic reaction that required medical intervention.
Allergic to any vaccine component, including aluminum, yeast, or Benzonase® (nuclease).
Known thrombocytopenia or any coagulation disorder that would contraindicate intramuscular injections.
Currently immunocompromised or was diagnosed as having congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus (SLE), rheumatoid arthritis, juvenile rheumatoid arthritis (JRA), inflammatory bowel disease, or other autoimmune condition.
History of splenectomy.

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
V501Also: (Gardasil®) human papillomavirus (types 6, 11, 16, 18) recombinant vaccine, qHPV0.5 mL intramuscular injection in the deltoid muscle at Day 1, Month 2, and Month 6	Biological	Chinese Girls Aged 9 to 19 Years, Chinese Young Women Aged 20 to 26 Years

Primary outcome

Base Stage: Geometric Mean Titers for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18: Competitive Luminex Immunoassay (cLIA)
Time frame: Month 7 (1 month postdose 3)
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as milli Merck Units/milliliter (mMU/mL).
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 12 Assessed by cLIA
Time frame: Month 12 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 24 Assessed by cLIA
Time frame: Month 24 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 36 Assessed by cLIA
Time frame: Month 36 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 48 Assessed by cLIA
Time frame: Month 48 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 60 Assessed by cLIA
Time frame: Month 60 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV virus-like particles (VLPs) Types 6, 11, 16, and 18 were measured. Antibodies were measured using a Competitive Luminex Immunoassay (cLIA). Antibody titers were expressed as (mMU/mL).
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 12 Assessed by cLIA
Time frame: Month 12 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 24 Assessed by cLIA
Time frame: Month 24 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 36 Assessed by cLIA
Time frame: Month 36 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 48 Assessed by cLIA
Time frame: Month 48 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 60 Assessed by cLIA
Time frame: Month 60 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using cLIA.
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 12 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Time frame: Month 12 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 24 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Time frame: Month 24 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 36 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Time frame: Month 36 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA. Antibody titers were expressed as (mMU/mL).
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 48 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Time frame: Month 48 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA.
Extension Stage: GMTs for Serum Anti-HPV Types 6, 11, 16, and 18 at Month 60 Assessed by Immunoglobulin G Luminex Immunoassay (IgG LIA)
Time frame: Month 60 post-vaccination 1
Serum antibody titers (Geometric mean titers) for HPV Types 6, 11, 16, and 18 were measured. Antibodies were measured using IgG LIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 12 Assessed by IgG LIA
Time frame: Month 12 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 24 Assessed by IgG LIA
Time frame: Month 24 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 36 Assessed by IgG LIA
Time frame: Month 36 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 48 Assessed by IgG LIA
Time frame: Month 48 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.
Extension Stage: Percentage of Participants With Seropositivity to HPV Types 6, 11, 16, and 18 at Month 60 Assessed by IgG LIA
Time frame: Month 60 post-vaccination 1
The percentage of participants who are seropositive to each of HPV Types 6, 11, 16, and 18 were assessed. Antibodies were measured using IgG LIA.

9 secondary outcomes

Base Stage: Percentage of Participants With Seroconversion for HPV Types 6, 11, 16, and 18: cLIA
Time frame: Month 7 (1 month postdose 3)
Base Stage: Geometric Mean Titers for Serum Anti-HPV Types 6, 11, 16, and 18: IgG LIA
Time frame: Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants With Seroconversion for HPV Types 6, 11, 16, and 18: IgG LIA
Time frame: Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants Who Experienced a Solicited Injection-site Adverse Event (AE)
Time frame: Up to 15 days after any vaccination
Base Stage: Percentage of Participants Participants Who Experienced a Solicited Systemic AE
Time frame: Up to 15 days after any vaccination
Base Stage: Percentage of Participants Who Experienced a Serious Adverse Event (SAE)
Time frame: Up to Month 7 (1 month postdose 3)
Base Stage: Percentage of Participants Who Experienced an AE
Time frame: Up to 31 days after any vaccination
Base Stage: Maximum Axillary Temperature: Merck Sharp & Dohme (MSD) Criteria
Time frame: Up to 5 days after any vaccination
Extension Stage: Percentage of Participants Who Experienced an SAE
Time frame: Month 7 up to Month 60

Results and safety

Results posted to the registry on 4 May 2020, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
Base Study: Chinese Girls Aged 9 to 19 Years	383	383
Base Study: Chinese Young Women Aged 20 to 26 Years	383	379
Extension Study: Chinese Girls Aged 9 to 19 Years	0	0

Primary outcome: Base Stage: Geometric Mean Titers for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18: Competitive Luminex Immunoassay (cLIA)

Time frame: Month 7 (1 month postdose 3). Geometric mean (95% Confidence Interval). Unit: mMU/mL

Measure	Chinese Girls Aged 9 to 19 Years n = 383	Base Study: Chinese Young Women Aged 20 to 26 Years n = 383
Anti-HPV 6	975.2 (905.6 to 1050.2)	686.6 (635.5 to 741.7)
Anti-HPV 11	807.4 (749.8 to 869.4)	580.2 (537.0 to 626.8)
Anti-HPV 16	4573.7 (4244.5 to 4928.3)	2989.2 (2766.7 to 3229.6)
Anti-HPV 18	1176.5 (1069.0 to 1294.8)	708.6 (642.4 to 781.6)

Chinese Girls Aged 9 to 19 Years vs Base Study: Chinese Young Women Aged 20 to 26 Years: GMT Ratio: 1.42 (95% CI 1.28 to 1.58), p <0.0001, ANOVA
Chinese Girls Aged 9 to 19 Years vs Base Study: Chinese Young Women Aged 20 to 26 Years: GMT Ratio: 1.39 (95% CI 1.25 to 1.55), p <0.0001, ANOVA
Chinese Girls Aged 9 to 19 Years vs Base Study: Chinese Young Women Aged 20 to 26 Years: GMT Ratio: 1.53 (95% CI 1.37 to 1.70), p <0.0001, ANOVA

Population analysed: Per protocol, the analysis population included the participants with immune response to each of the 4 HPV types (6, 11, 16, and 18), who received 3 vaccinations and met following criteria: received all 3 vaccinations within acceptable day ranges, seronegative at Day 1 for HPV type(s), had a Day 1 through Month 7 serum sample collected within an acceptable day range, and had no protocol violation that potentially interfered with the evaluation of immune responses to the qHPV vaccine.

Primary outcome: Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 12 Assessed by cLIA

Time frame: Month 12 post-vaccination 1. Geometric mean (95% Confidence Interval). Unit: mMU/mL

Measure	Extension Study: Chinese Girls Aged 9 to 19 Years n = 365
Anti-HPV 6	259.1 (237.6 to 282.4)
Anti-HPV 11	206.7 (190.5 to 224.3)
Anti-HPV 16	1149.8 (1054.6 to 1253.7)
Anti-HPV 18	284.2 (257.3 to 313.8)

Population analysed: Per protocol, the analysis population included participants with immune response to each of the 4 HPV types (6, 11, 16, and 18), who received 3 vaccinations and met following criteria: received all 3 vaccinations within acceptable day ranges, seronegative at Day 1 for HPV type(s), had a Day 1 through Month 7 serum sample collected within an acceptable day range, and had no protocol violation that potentially interfered with the evaluation of immune responses to the qHPV vaccine.

Primary outcome: Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 24 Assessed by cLIA

Time frame: Month 24 post-vaccination 1. Geometric mean (95% Confidence Interval). Unit: mMU/mL

Measure	Extension Study: Chinese Girls Aged 9 to 19 Years n = 365
Anti-HPV 6	137.9 (125.5 to 151.4)
Anti-HPV 11	110.3 (101.0 to 120.6)
Anti-HPV 16	522.6 (472.1 to 578.5)
Anti-HPV 18	157.2 (142.7 to 173.3)

Primary outcome: Extension Stage: GMTs for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18 at Month 36 Assessed by cLIA

Time frame: Month 36 post-vaccination 1. Geometric mean (95% Confidence Interval). Unit: mMU/mL

Measure	Extension Study: Chinese Girls Aged 9 to 19 Years n = 365
Anti-HPV 6	110.6 (101.3 to 120.7)
Anti-HPV 11	87.0 (79.6 to 95.2)
Anti-HPV 16	400.8 (359.5 to 446.8)
Anti-HPV 18	131.9 (120.2 to 144.8)

9 secondary outcomes are reported in the full results.

Adverse events

Time frame: Base Stage only: Up to approximately 7 months Extension Stage: Month 7 up to approximately 60 Months. Other adverse events reported at 5% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
Base Study: Chinese Girls Aged 9 to 19 Years	6 of 383 (1.6%)	216 of 383 (56.4%)	0 of 383
Base Study: Chinese Young Women Aged 20 to 26 Years	11 of 383 (2.9%)	238 of 383 (62.1%)	0 of 383
Extension Study: Chinese Girls Aged 9 to 19 Years	8 of 365 (2.2%)	0 of 365 (0%)	0 of 365

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 31 Dec 2024.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Derived from this study: PubMed 33239228Huang Z, He J, Su J, Ou Z, Liu G, Fu R, Shou Q, Zheng M, Group T, Luxembourg A, Liao X, Zhang J. Immunogenicity and safety of the quadrivalent human papillomavirus vaccine in Chinese females aged 9 to 26 years: A phase 3, open-label, immunobridging study. Vaccine. 2021 Jan 22;39(4):760-766. doi: 10.1016/j.vaccine.2020.11.008. Epub 2020 Nov 22.
Merck Clinical Trials InformationLink provided by the sponsor.
Individual participant dataSharing planned: Yes. http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Medical Director study director

Merck Sharp & Dohme LLC

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 31 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 4 May 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Base Stage: Geometric Mean Titers for Serum Anti-Human Papillomavirus (HPV) Types 6, 11, 16, and 18: Competitive Luminex Immunoassay (cLIA) (time frame: Month 7 (1 month postdose 3)). The study lists 21 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03493542, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Dec 2024.