Safety and Immunogenicity of Extended 2-dose Regimens of 9-valent Human Papillomavirus (9vHPV) Vaccine (V503-069)
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ClinicalTrials.gov Identifier: NCT04708041 |
Recruitment Status :
Active, not recruiting
First Posted : January 13, 2021
Last Update Posted : May 19, 2022
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Condition or disease | Intervention/treatment | Phase |
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Papillomavirus Infections | Biological: 9vHPV vaccine | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 700 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | A Phase 3 International, Multicenter, Open-label Study to Evaluate the Safety and Immunogenicity of 9vHPV Vaccine Administered as 2-dose Regimen With Extended Dosing Intervals in 9- to 14-Year Old Boys and Girls Compared With a Standard 3-dose Regimen in 16- to 26-Year Old Women |
Actual Study Start Date : | March 15, 2021 |
Estimated Primary Completion Date : | June 18, 2029 |
Estimated Study Completion Date : | June 18, 2029 |
Arm | Intervention/treatment |
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Experimental: Cohort 0: 1 Dose of 9vHPV Vaccine (previous 1-dose recipients)
10 to 15 year old girls and boys (who previously received 1 dose of 9vHPV vaccine) receive a second dose of 9vHPV vaccine at Day 1.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
Experimental: Cohort 1: 2 Doses of 9vHPV Vaccine Given 12 Months Apart
9 to 14 year old girls and boys receive a 2-dose regimen of 9vHPV vaccine at Day 1 and Month 12.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
Experimental: Cohort 2: 2 Doses of 9vHPV Vaccine Given 24 Months Apart
9 to 13 year old girls and boys receive a 2-dose regimen of 9vHPV vaccine at Day 1 and Months 24.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
Experimental: Cohort 3: 2 Doses of 9vHPV Vaccine Given 36 Months Apart
9 to 12 year old girls and boys receive a 2-dose regimen of 9vHPV vaccine at Day 1 and Month 36.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
Experimental: Cohort 4: 2 Doses of 9vHPV Vaccine Given 60 Months Apart
9 to 10 year old girls and boys receive a 2-dose regimen of 9vHPV vaccine at Day 1 and Month 60.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
Active Comparator: Cohort 5: 3 Doses of 9vHPV Vaccine Given Over a 6-Month Period
16 to 26 year old young women receive 3 dose regimen of 9vHPV vaccine at Day 1, Month 2 and Month 6.
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Biological: 9vHPV vaccine
9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) administered as a 0.5-mL intramuscular injection |
- Geometric Mean Titers of Anti-Human Papilloma Virus Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 as Measured by Competitive Luminex Immunoassay [ Time Frame: 4 weeks post last vaccination (Up to ~Month 61) ]Serum antibody titers for human papilloma virus (HPV) types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using competitive luminex immunoassay (cLIA). The geometric mean titer (GMT) for each HPV type will be reported in milli Merck units/mL (mMU/mL).
- Percentage of Participants With at Least 1 Solicited Injection-site Adverse Event [ Time Frame: Up to 5 days post vaccination ]An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants with injection-site AEs (erythema/redness, pain and swelling) will be assessed.
- Percentage of Participants With at Least 1 Systemic Adverse Event [ Time Frame: Up to 15 days post vaccination ]An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants with a systemic AE will be assessed.
- Percentage of Participants With at Least 1 Serious Vaccine-Related Adverse Event [ Time Frame: Entire study period (Up to ~Month 96) ]A serious adverse event (SAE) is defined as one that results in death, is life threatening, or requires hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly or birth defect, or other important medical event that may require medical intervention. An SAE that is judged by the investigator to be related to the study vaccine is defined as a vaccine-related SAE.
- Percentage of Participants (Cohorts 1 to 5) Who Are Seropositive for HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 4 weeks post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The percentage of participants who are seropositive (analysis population Cohorts 1 through 5 only) for each HPV type will be assessed.
- Geometric Mean Titers (Cohorts 1 to 5) of Anti HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 12 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The GMT for each HPV type (analysis population Cohorts 1 through 5 only) will be reported in mMU/mL.
- Percentage of Participants (Cohorts 1 to 5) Who Are Seropositive for HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 12 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The percentage of participants who are seropositive (analysis population Cohorts 1 through 5 only) for each HPV type will be assessed.
- Geometric Mean Titers ( Cohorts 1 to 5) of Anti HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 24 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The GMT for each HPV type (analysis population Cohorts 1 through 5 only) will be reported in mMU/mL.
- Percentage of Participants (Cohorts 1 to 5) Who Are Seropositive for HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 24 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The percentage of participants who are seropositive (analysis population Cohorts 1 through 5 only) for each HPV type will be assessed.
- Geometric Mean Titers ( Cohorts 1 to 5) of Anti HPV Types 6, 11, 16, 18, 31, 33, 45, 52 , and 58 [ Time Frame: 36 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The GMT for each HPV type (analysis population Cohorts 1 through 5 only) will be reported in mMU/mL.
- Percentage of Participants (Cohorts 1 to 5) Who Are Seropositive for HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 [ Time Frame: 36 months post last vaccination ]Serum antibody titers for HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 will be determined using cLIA. The percentage of participants who are seropositive (analysis population Cohorts 1 through 5 only) for each HPV type will be assessed.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 9 Years to 26 Years (Child, Adult) |
Sexes Eligible for Study: | All |
Gender Based Eligibility: | Yes |
Gender Eligibility Description: | Healthy male and female participants between the ages of 9 to 15 years (inclusive) and female participants between the ages of 16 and 26 years (inclusive) will be enrolled in this study. |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Boys and Girls 9 to 15 Years:
- Must not have had coitarche and does not plan on becoming sexually active during the vaccination period
Women 16 to 26 Years:
- Has never had a Papanicolaou (Pap) test or only had normal Pap test results
- A lifetime history of 0 to 4 male and/or female sexual partners
Cohort 0 Participants:
- Received 1 dose of 9vHPV vaccine at least 1 year prior to enrollment and did not receive a second dose of any HPV vaccine
Exclusion Criteria:
All Participants:
- Known allergy to any vaccine component
- History of severe allergic reaction that required medical intervention
- Thrombocytopenia or any coagulation disorder
- Females only: participant is pregnant or expecting to donate eggs during day 1 through month 7
- Currently immunocompromised, or been diagnosed with immunodeficiency
- Had a splenectomy
- Receiving or has received immunosuppressive therapies within the last year
- Received any immunoglobulin product or blood-derived product within 3 months
- Has received more than 1 dose of an HPV vaccine (Cohort 0)
- Received a marketed HPV vaccine or has participated in an HPV vaccine clinical trial (Cohorts 1-5)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04708041

Study Director: | Medical Director | Merck Sharp & Dohme LLC |
Responsible Party: | Merck Sharp & Dohme LLC |
ClinicalTrials.gov Identifier: | NCT04708041 |
Other Study ID Numbers: |
V503-069 V503-069 ( Other Identifier: Merck ) 2022-500253-37-00 ( Other Identifier: EU CT ) 2020-003736-24 ( EudraCT Number ) |
First Posted: | January 13, 2021 Key Record Dates |
Last Update Posted: | May 19, 2022 |
Last Verified: | May 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf |
URL: | http://engagezone.msd.com/ds_documentation.php |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Papillomavirus Infections DNA Virus Infections Virus Diseases Infections Tumor Virus Infections |