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Safety and Immunogenicity Study of V503 (GARDASIL™9, 9vHPV Vaccine) Administered to 9- to 26-Year-Old Females and Males in Vietnam (V503-017)

A Phase III Open-label Safety and Immunogenicity Study of GARDASIL™9 Administered to 9- to 26-Year-Old Females and Males in Vietnam

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03546842
Enrollment
201
Registered
2018-06-06
Start date
2018-06-29
Completion date
2019-01-29
Last updated
2020-02-25

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

Conditions

Adenocarcinoma in Situ, Condylomata Acuminata, Papillomavirus Infections, Uterine Cervical Neoplasms, Vaginal Neoplasms, Vulvar Neoplasms

Brief summary

This study will evaluate the safety and immunogenicity of V503 (GARDASIL™9, 9vHPV vaccine) administered to 9- to 26-year-old females and males in Vietnam. The study hypothesis states that V503 induces acceptable anti-human papillomavirus (HPV) 6, 11, 16, 18, 31, 33, 45, 52, and 58 seroconversion at 4 weeks postdose 3.

Interventions

BIOLOGICAL9vHPV vaccine

9-valent HPV \[Types 6, 11, 16, 18, 31, 33, 45, 52, and 58\] L1 virus-like particle vaccine in a 0.5-mL intramuscular injection

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
9 Years to 26 Years
Healthy volunteers
Yes

Inclusion criteria

* In good physical health * Participants 9 to 15 years of age: has not had coitarche and do not plan on becoming sexually active during the study * Participants 16 to 26 year of age: has never had Papanicolaou (Pap) testing or has had only normal Pap test results. Has a lifetime history of ≤4 male and/or female sexual partners. * Female participants 16 to 26 years of age: has not had sex with males or has had sex with males and used effective contraception, and understands and agrees that during the study she should not have sexual intercourse with males without effective contraception (rhythm method, withdrawal, and emergency contraception are not acceptable methods of contraception per-protocol).

Exclusion criteria

* Known allergy to any vaccine component, including aluminum, yeast, or BENZONASE™ * History of severe allergic reaction that required medical intervention * Has thrombocytopenia or any coagulation disorder that would contraindicate intramuscular injections * Concurrently enrolled in clinical studies of investigational agents * Immunocompromised or has been diagnosed with congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus, rheumatoid arthritis, juvenile rheumatoid arthritis, inflammatory bowel disease, or other autoimmune condition * Had a splenectomy * User of recreational or illicit drugs or has had a recent history (within the last year) of drug abuse or dependence. Alcohol abusers are defined as those who drink despite recurrent social, interpersonal, and/or legal problems as a result of alcohol use. * History of a positive test for HPV * Male participants 16 to 26 years of age: history of HPV-related external genital lesions (e.g., condyloma acuminata) or HPV-related anal lesions (e.g., condyloma acuminata, or anal intraepithelial neoplasia) or anal cancer. * Female participants 16 to 26 years of age: history of an abnormal cervical biopsy result (showing cervical intraepithelial neoplasia or worse). * Female participants 16 to 26 years of age: history of HPV-related external genital lesions (e.g., condyloma acuminata, or vulvar intraepithelial neoplasia) or external genital cancer, HPV-related vaginal lesions (e.g., condyloma acuminata, or vaginal intraepithelial neoplasia) or vaginal cancer, or HPV-related anal lesions (e.g., condyloma acuminata, or anal intraepithelial neoplasia) or anal cancer. * Female participants: pregnant as determined by a serum pregnancy test or urine pregnancy test that is sensitive to 25 mIU/mL beta human chorionic gonadotropin (β-hCG). * Female participants: expecting to donate eggs during the study. * Receiving or has received a prohibited immunosuppressive therapy in the year prior to the study * Received any immune globulin product or blood-derived product within the 3 months prior to the Day 1 vaccination, or plans to receive any such product during the study * Received inactivated or recombinant vaccines within 14 days prior to the Day 1 vaccination or has received live vaccines within 21 days prior to the Day 1 vaccination * Received a marketed HPV vaccine, or has participated in an HPV vaccine clinical study and has received either active agent or placebo * Is or has an immediate family member (e.g., spouse, parent/legal guardian, sibling or child) who is investigational site or sponsor staff directly involved with this study.

Design outcomes

Primary

MeasureTime frameDescription
Seroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 74 weeks postdose 3 (Month 7)Seroconversion was defined as a participant who was anti-HPV seronegative at Day 1 and became seropositive at 4 weeks postdose 3 (Month 7). Anti-HPV antibodies were measured using a Competitive Luminex Immunoassay.

Secondary

MeasureTime frameDescription
Percentage of Participants With a Solicited Injection-site Adverse EventUp to 5 days after any vaccinationAn adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study vaccine. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study vaccine or protocol-specified procedure was also an AE. The participant or the parent/guardian of the participant were to record the presence of any vaccination report card (VRC)-prompted injection-site AEs that occurred in the 5 days after any vaccination. The percentage of participants with an injection-site AE prompted on the VRC (erythema, pain, and swelling) was summarized.
Percentage of Participants With a Solicited Systemic Adverse EventUp to 5 days after any vaccinationAn AE was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study vaccine. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study vaccine or protocol-specified procedure was also an AE. The only solicited systemic AE was in response to results of daily oral temperature assessments. The participant or the parent/guardian of the participant will be asked to record the participant's oral temperature in the evening after each study vaccination and daily for 4 days after each study vaccination on VRC. The percentage of participants that had an AE due to an elevated oral temperature \[(≥ 37.8 °C (100.0 °F)\] was summarized.
Percentage of Participants With a Vaccine-related Serious Adverse EventUp to 4 weeks postdose 3 (Month 7)A serious adverse event (SAE) is an AE that is life-threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. The percentage of participants that experience at least one SAE that was reported as at least possibly related to the study vaccine was summarized.
Geometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Day 1 (predose)Anti-HPV Type 6, 11, 16, 18, 31, 33, 45, 52, and 58 antibodies are measured using a Competitive Luminex Immunoassay. Titers are reported in milli Merck units/mL (mMU/mL).
Geometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 74 weeks postdose 3 (Month 7)Anti-HPV Type 6, 11, 16, 18, 31, 33, 45, 52, and 58 antibodies are measured using a Competitive Luminex Immunoassay. Titers are reported in mMU/mL.

Countries

Vietnam

Participant flow

Participants by arm

ArmCount
9vHPV Vaccine
Participants received a single 0.5-mL intramuscular injection of the 9vHPV vaccine at Day 1, Month 2, and Month 6
201
Total201

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyProtocol Violation1
Overall StudyWithdrawal by Subject2

Baseline characteristics

Characteristic9vHPV Vaccine
Age, Continuous15.8 years
STANDARD_DEVIATION 4.4
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
201 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
201 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
0 Participants
Sex: Female, Male
Female
135 Participants
Sex: Female, Male
Male
66 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 201
other
Total, other adverse events
90 / 200
serious
Total, serious adverse events
1 / 200

Outcome results

Primary

Seroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7

Seroconversion was defined as a participant who was anti-HPV seronegative at Day 1 and became seropositive at 4 weeks postdose 3 (Month 7). Anti-HPV antibodies were measured using a Competitive Luminex Immunoassay.

Time frame: 4 weeks postdose 3 (Month 7)

Population: All allocated participants who were seronegative to the appropriate HPV type at Day 1, received all 3 vaccinations with the correct dose within acceptable day ranges, provided a serum sample within 21 to 49 days postdose 3, and had no protocol deviations that could interfere with the evaluation of participant's immune response to 9vHPV vaccination.

ArmMeasureGroupValue (NUMBER)
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 6100 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 11100 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 58100.0 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 16100 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 18100.0 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 31100.0 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 33100.0 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 45100.0 Percentage of Participants
9vHPV VaccineSeroconversion Percentages to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 52100.0 Percentage of Participants
Secondary

Geometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7

Anti-HPV Type 6, 11, 16, 18, 31, 33, 45, 52, and 58 antibodies are measured using a Competitive Luminex Immunoassay. Titers are reported in mMU/mL.

Time frame: 4 weeks postdose 3 (Month 7)

Population: All allocated participants who were seronegative to the appropriate HPV type at Day 1, received all 3 vaccinations with the correct dose within acceptable day ranges, provided a serum sample within 21 to 49 days postdose 3, and had no protocol deviations that could interfere with the evaluation of participant's immune response to 9vHPV vaccination.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 311137.9 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 33507.8 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 45579.2 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 61008.2 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 11796.3 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 164605.4 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 181621.6 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 52500.8 mMU/mL
9vHPV VaccineGeometric Mean Titers of Antibodies to HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 at Month 7Anti-HPV 58701.8 mMU/mL
Secondary

Geometric Mean Titers of Serotype-specific Antibodies: Predose Day 1

Anti-HPV Type 6, 11, 16, 18, 31, 33, 45, 52, and 58 antibodies are measured using a Competitive Luminex Immunoassay. Titers are reported in milli Merck units/mL (mMU/mL).

Time frame: Day 1 (predose)

Population: All allocated participants who were seronegative to the appropriate HPV type at Day 1, received all 3 vaccinations with the correct dose within acceptable day ranges, provided a serum sample within 21 to 49 days postdose 3, and had no protocol deviations that could interfere with the evaluation of participant's immune response to 9vHPV vaccination.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 45NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 52NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 58NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 6NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 11NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 16NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 1829.3 mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 31NA mMU/mL
9vHPV VaccineGeometric Mean Titers of Serotype-specific Antibodies: Predose Day 1Anti-HPV 33NA mMU/mL
Secondary

Percentage of Participants With a Solicited Injection-site Adverse Event

An adverse event (AE) was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study vaccine. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study vaccine or protocol-specified procedure was also an AE. The participant or the parent/guardian of the participant were to record the presence of any vaccination report card (VRC)-prompted injection-site AEs that occurred in the 5 days after any vaccination. The percentage of participants with an injection-site AE prompted on the VRC (erythema, pain, and swelling) was summarized.

Time frame: Up to 5 days after any vaccination

Population: All participants that received at least 1 vaccination with 9vHPV vaccine and provided safety data at any time during the study.

ArmMeasureValue (NUMBER)
9vHPV VaccinePercentage of Participants With a Solicited Injection-site Adverse Event45.0 Percentage of Participants
Secondary

Percentage of Participants With a Solicited Systemic Adverse Event

An AE was defined as any untoward medical occurrence in a participant which did not necessarily have a causal relationship with study vaccine. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that was temporally associated with the study vaccine or protocol-specified procedure was also an AE. The only solicited systemic AE was in response to results of daily oral temperature assessments. The participant or the parent/guardian of the participant will be asked to record the participant's oral temperature in the evening after each study vaccination and daily for 4 days after each study vaccination on VRC. The percentage of participants that had an AE due to an elevated oral temperature \[(≥ 37.8 °C (100.0 °F)\] was summarized.

Time frame: Up to 5 days after any vaccination

Population: All participants that received at least 1 vaccination with 9vHPV vaccine and provided safety data at any time during the study.

ArmMeasureValue (NUMBER)
9vHPV VaccinePercentage of Participants With a Solicited Systemic Adverse Event0.0 Percentage of Participants
Secondary

Percentage of Participants With a Vaccine-related Serious Adverse Event

A serious adverse event (SAE) is an AE that is life-threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. The percentage of participants that experience at least one SAE that was reported as at least possibly related to the study vaccine was summarized.

Time frame: Up to 4 weeks postdose 3 (Month 7)

Population: All participants that received at least 1 vaccination with 9vHPV vaccine and provided safety data at any time during the study.

ArmMeasureValue (NUMBER)
9vHPV VaccinePercentage of Participants With a Vaccine-related Serious Adverse Event0.0 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Feb 15, 2026