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Safety of and Immune Response to a Novel Human Papillomavirus Vaccine in HIV Infected Children

Phase II Safety and Immunogenicity Study of Quadrivalent Human Papillomavirus (Types 6, 11, 16, 18) L1 Virus-Like Particle (VLP) Vaccine in HIV Infected Children 7 to 12 Years of Age

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00339040
Enrollment
130
Registered
2006-06-20
Start date
2006-10-31
Completion date
2009-08-31
Last updated
2021-11-05

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

Conditions

HIV Infections, Sexually Transmitted Diseases

Keywords

HPV

Brief summary

The purpose of this study is to determine the safety of and immune response to a new human papillomavirus (HPV) vaccine in HIV (Human immunodeficiency virus) infected children between the ages of 7 and 12 years.

Detailed description

Genital HPV infection is the most common sexually transmitted infection in the world and may lead to genital warts, anogenital dysplasias, and invasive cancers. HIV infected people and others with compromised immunity are at greater risk for HPV-related complications. In particular, researchers are concerned about the risk of HPV infection to women, who may be infected by their male partners, especially if these partners engage in anal intercourse. HIV infected women tend to have multiple types of HPV (associated with a greater risk of HPV-related disease), are less likely to clear HPV-related conditions, and are more likely to progress to HPV-related disease. The quadrivalent HPV (types 6, 11, 16, 18) L1 virus-like particle (VLP) vaccine to be tested in this study was safe and generally well tolerated in previous studies conducted in healthy and HPV-exposed adolescents, young adults, and older women. However, it is still unclear if the vaccine will be safe and will elicit a similar immune response in younger children. The purpose of this study is to evaluate the safety and immunogenicity of the novel quadrivalent HPV (Types 6, 11, 16, 18) L1 VLP vaccine in HIV infected children 7 to 12 years of age. This study had two stages and lasted at least 108 weeks. In Stage I, participants were stratified by CD4 percentage (CD4%) nadir and CD4% at study screening (Stratum A: CD4% Nadir \< 15 and CD4% ≥ 15 at screening, Stratum B: CD4% Nadir ≥ 15 and \< 25 and CD4% ≥ 15 at screening, Stratum C: CD4% Nadir ≥ 25 and CD4% ≥ 25 at screening). Within each stratification group, they were randomly assigned to one of two arms. During Stage I, Arm A (QHPV:Quadrivalent human papillomavirus vaccine) participants received 3 doses of vaccine, while Arm B (Placebo/QHPV) participants received 3 doses of placebo. Participants did not know whether they were receiving vaccine or placebo. Participants received their assigned intervention at study entry and Weeks 8 and 24. At Week 96, Stage II began, and all study participants were told if they received vaccine or placebo in Stage I. Arm A participants received an additional dose of vaccine at Week 96; Arm B participants received doses of vaccine at Weeks 96, 104, and 120. Over the course of the study, there were at least 12 study visits. A physical exam and blood collection occurred at most visits; medical history occurred at selected visits. After each vaccination, participants were observed for at least 30 minutes to monitor for any allergic reactions possibly resulting from the vaccination. For 15 days following vaccination, parents or guardians were asked to complete a report card with details of each child's signs and symptoms. Three days after each vaccination, parents or guardians of study participants were contacted by telephone and asked about any adverse events that a child may have experienced.

Interventions

BIOLOGICALQuadrivalent human papillomavirus (types 6, 11, 16, 18) L1 virus-like particle (VLP) or Quadrivalent human papillomavirus vaccine (QHPV)

QHPV at week 0, 8, 24 and 96.

OTHERPlacebo/QHPV

Placebo at week 0, 8, 24 and QHPV at week 96, 104, 120.

Sponsors

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH
National Institute of Allergy and Infectious Diseases (NIAID)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
7 Years to 12 Years
Healthy volunteers
No

Inclusion criteria

Children ages ≥ 7 to \< 12 years of age. A confirmed diagnosis of HIV infection, defined as two positive assays from two different samples. The two results may be in any combination of the following: * at any age: Deoxyribonucleic acid (DNA) polymerase chain reaction (PCR), Ribonucleic acid (RNA) PCR * age \> 4 weeks: p24 antigen detection * age \>18 months: licensed ELISA (Enzyme-linked immunosorbent assay) with confirmatory Western Blot CD4% ≥ 15 at the time of screening is required (Note that this is a minimum requirement, and that for Stratum C the CD4% needs to be ≥ 25). For Strata A and B: Currently stable (≥ 3 months) on highly active antiretroviral therapy (HAART) regimen, defined as three or more antiretrovirals from at least two different therapeutic classes, or therapy with the combination of azidothymidine, lamivudine, and abacavir. For stratum C no antiretroviral therapy is required. Parent or legal guardian able and willing to provide signed informed consent. Negative urine pregnancy test sensitive to 25 International Unit (IU) beta-human chorionic gonadotropin (HCG) for girls who are menstruating (child bearing potential). Female study volunteers who are participating in sexual activity that could lead to pregnancy must agree to use two reliable methods of contraception, one of which must be a barrier method. A barrier method of contraception (condoms or cervical cap) together with another reliable form of contraception (condoms a , with a spermicidal agent; a diaphragm or cervical cap with spermicide; an intrauterine device \[IUD\]; or hormonal-based contraception) must be used while on this study. Condoms are recommended because their appropriate use is the only contraception method effective for preventing HIV-1 transmission Males participating in the study must not attempt to impregnate a woman, or participate in sperm donation programs. Males engaging in sexual activity that could lead to pregnancy must use a condom.

Exclusion criteria

Body temperature ≥ 101 F or ≥ 38.3 C, orally determined, within 72 hours prior to the first and each subsequent injection. Subjects may be vaccinated any time in the next seven days thereafter, provided that the site investigator is satisfied that the febrile illness has ended. Total bilirubin ≥ 5 x Upper Limit of Normal (ULN) at screening. Alanine transaminase (ALT) or serum glutamic pyruvic transaminase (SGPT) ≥ 5 x ULN at screening in the absence of other explained causes (as determined by the site investigator) at screening. Serum creatinine ≥ 1.5 mg/dL at screening. Absolute neutrophil count ≤ 750 cells/mm3 at screening. Hemoglobin ≤ 9.9 g/dL at screening. Platelet count ≤ 75,000 cells/mm³ at screening. Presence of an acute opportunistic non-bacterial or bacterial infection requiring therapy at the time of enrollment; the subject may be entered once he/she is stable on appropriate anti-infective therapy. Chemotherapy for active malignancy. Other known or suspected disease of the immune system, or immunosuppressive therapy. Prior treatment with immunosuppressive or immunomodulation therapy within 60 days of screening. Prior treatment with three or more week-long courses of corticosteroids (≥ 2.0 mg/kg or ≥ 20 mg total of prednisone-equivalent) within one year of screening; or any systemic (oral or parenteral) steroids (≥ 2.0 mg/kg or ≥ 20 mg total of prednisone-equivalent for ≥ 3 days) within 30 days of study entry. Prior vaccinations with inactivated vaccines received within two weeks of any dose of study vaccine, and no other vaccinations may be planned for two weeks after each dose of study vaccine. Prior vaccinations with live vaccines received within three weeks before any dose of study vaccine, and no other vaccinations may be planned for two weeks after each dose of study vaccine. Prior diagnosis of sexually transmitted infections (STIs), genital warts, or juvenile recurrent papillomatosis. History of any severe allergic reaction (e.g., swelling of the mouth and throat, difficulty breathing, hypotension, or shock) that required medical intervention. Known allergies to any vaccine component, including aluminum, yeast, or BENZONASE™ (nuclease, Nycomed \[used to remove residual nucleic acids from this and other vaccines\]). Previous treatment with any immune globulin preparation or blood-derived products within the six months prior to the first injection and none may be planned during the study. Known coagulation disorder that would contraindicate Intramuscular (IM) injections. Any clinically significant diseases (other than HIV infection) or clinically significant findings during the screening medical history or physical examination that, in the investigator's opinion, would compromise the outcome of this study. Breastfeeding.

Design outcomes

Primary

MeasureTime frameDescription
Percent of Participants Developing Grade 3 or 4 Adverse Events (AEs)Within 14 days of first three doses of vaccinationAdverse events were graded using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events (December 2004). The grades used are: Grade 1=Mild, Grade 2=Moderate, Grade 3=Severe, Grade 4=Potentially Life-Threatening. All grade 3 and higher signs, symptoms, and laboratory toxicities were included.
Percent of Participants Developing Grade 3 or 4 Adverse Events (AEs) Attributed to Study TreatmentWithin 14 days of first three doses of vaccinationAdverse events were graded using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events (December 2004). All grade 3 and higher signs, symptoms, and laboratory toxicities attributed to study treatment were included. The relationship between the Adverse Events and the vaccination were evaluated by study team and assigned to, for example, Treatment related, Non-treatment related, Baseline, Possibly treatment related.
Percent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionAt week 28 after beginning the vaccination seriesSerum anti-HPV 6, 11, 16, and 18 antibody was measured using a competitive Luminex immunoassay (cLIA; reported in milli-Merck Units \[mMU\]/mL). Sero-positivity was defined as an anti-HPV titer ≥20, 16, 20, and 24 mMU/mL, for HPV types 6, 11, 16, and 18, respectively.
Serum Anti-HPV Antibody Titers (cLIA)Arm A week 0, 28, 72, 96, 97, 100; Arm B week 0, 28, 72, 96, 97, 100, 124.Geometric means of Type-specific Serum anti-HPV antibody titers (cLIA)

Secondary

MeasureTime frame
CD4 Percent Over TimeArm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.
HIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeArm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.
CD4 Count Over TimeArm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.

Countries

Puerto Rico, United States

Participant flow

Recruitment details

Between October 11, 2006 and November 22, 2006 130 participants were enrolled at 34 clinical sites from US & Puerto Rico.

Pre-assignment details

Participants were stratified by CD4% criteria. Four participants were randomized but did not receive the study treatment. The study analyses were based on 126 participants who received the study treatment.

Participants by arm

ArmCount
Arm A QHPV
Participants received three doses of the quadrivalent human papillomavirus vaccine (QHPV) (Types 6, 11, 16, 18) at week 0, 8, and 24 and an additional dose at week 96.
96
Arm B Placebo/QHPV
Participants received three doses of the placebo at week 0, 8, and 24 and additional dose of the quadrivalent human papillomavirus vaccine (QHPV) (Types 6, 11, 16, 18) at week 96, 104 and 120.
30
Total126

Withdrawals & dropouts

PeriodReasonFG000FG001
Stage INot able to attend clinic10
Stage IProtocol Violation11
Stage IILost to Follow-up30
Stage IINot able to attend clinic10
Stage IIProtocol Violation30
Stage IISite closing20
Stage IIWithdrawal by Subject12

Baseline characteristics

CharacteristicArm B Placebo/QHPVTotalArm A QHPV
Age, Continuous9.9 years
STANDARD_DEVIATION 1.3
9.9 years
STANDARD_DEVIATION 1.4
10.0 years
STANDARD_DEVIATION 1.4
CD4%35.8 percentage of total lymphocytes
STANDARD_DEVIATION 8.6
34.3 percentage of total lymphocytes
STANDARD_DEVIATION 8.1
33.9 percentage of total lymphocytes
STANDARD_DEVIATION 7.9
CD4 count1013 cells/µL
STANDARD_DEVIATION 455
903 cells/µL
STANDARD_DEVIATION 393
868 cells/µL
STANDARD_DEVIATION 367
Log10(RNA)2.6 Log10(copies/mL)
STANDARD_DEVIATION 0.8
2.7 Log10(copies/mL)
STANDARD_DEVIATION 0.9
2.7 Log10(copies/mL)
STANDARD_DEVIATION 0.9
Race/Ethnicity, Customized
Black, non-Hispanic
11 participants65 participants54 participants
Race/Ethnicity, Customized
Hispanic
14 participants51 participants37 participants
Race/Ethnicity, Customized
Others
3 participants4 participants1 participants
Race/Ethnicity, Customized
White, non-Hispanic
2 participants6 participants4 participants
RNA group
≤400 copies/mL
22 participants87 participants65 participants
RNA group
401 to ≤5000 copies/mL
5 participants21 participants16 participants
RNA group
>5000 copies/mL
3 participants18 participants15 participants
Sex: Female, Male
Female
18 Participants71 Participants53 Participants
Sex: Female, Male
Male
12 Participants55 Participants43 Participants
Stratification groups
Stratum A
10 participants41 participants31 participants
Stratification groups
Stratum B
11 participants43 participants32 participants
Stratification groups
Stratum C
9 participants42 participants33 participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
93 / 9630 / 30
serious
Total, serious adverse events
5 / 962 / 30

Outcome results

Primary

Percent of Participants Developing Grade 3 or 4 Adverse Events (AEs)

Adverse events were graded using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events (December 2004). The grades used are: Grade 1=Mild, Grade 2=Moderate, Grade 3=Severe, Grade 4=Potentially Life-Threatening. All grade 3 and higher signs, symptoms, and laboratory toxicities were included.

Time frame: Within 14 days of first three doses of vaccination

Population: Any participant who received at least one study vaccine/placebo were included in the safety analysis.

ArmMeasureValue (NUMBER)
Arm A QHPVPercent of Participants Developing Grade 3 or 4 Adverse Events (AEs)7.3 percent of participants
Arm B Placebo/QHPVPercent of Participants Developing Grade 3 or 4 Adverse Events (AEs)6.7 percent of participants
p-value: 1Fisher Exact
Primary

Percent of Participants Developing Grade 3 or 4 Adverse Events (AEs) Attributed to Study Treatment

Adverse events were graded using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events (December 2004). All grade 3 and higher signs, symptoms, and laboratory toxicities attributed to study treatment were included. The relationship between the Adverse Events and the vaccination were evaluated by study team and assigned to, for example, Treatment related, Non-treatment related, Baseline, Possibly treatment related.

Time frame: Within 14 days of first three doses of vaccination

Population: Any participant who received at least one study vaccine/placebo were included in the safety analysis

ArmMeasureValue (NUMBER)
Arm A QHPVPercent of Participants Developing Grade 3 or 4 Adverse Events (AEs) Attributed to Study Treatment0 percent of participants
Arm B Placebo/QHPVPercent of Participants Developing Grade 3 or 4 Adverse Events (AEs) Attributed to Study Treatment0 percent of participants
Primary

Percent of Participants With Human Papillomavirus (HPV) Type-Specific Seroconversion

Serum anti-HPV 6, 11, 16, and 18 antibody was measured using a competitive Luminex immunoassay (cLIA; reported in milli-Merck Units \[mMU\]/mL). Sero-positivity was defined as an anti-HPV titer ≥20, 16, 20, and 24 mMU/mL, for HPV types 6, 11, 16, and 18, respectively.

Time frame: At week 28 after beginning the vaccination series

Population: The type-specific results are reported for participants remaining after exclusion of those with protocol violations, unevaluable specimens, or the presence of type-specific sero-positive antibody at baseline.

ArmMeasureGroupValue (NUMBER)
Arm A QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 6100.0 percent of participants
Arm A QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 11100.0 percent of participants
Arm A QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 16100.0 percent of participants
Arm A QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 1896.7 percent of participants
Arm B Placebo/QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 180.0 percent of participants
Arm B Placebo/QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 60.0 percent of participants
Arm B Placebo/QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 163.7 percent of participants
Arm B Placebo/QHPVPercent of Participants With Human Papillomavirus (HPV) Type-Specific SeroconversionSerotype 110.0 percent of participants
Primary

Serum Anti-HPV Antibody Titers (cLIA)

Geometric means of Type-specific Serum anti-HPV antibody titers (cLIA)

Time frame: Arm A week 0, 28, 72, 96, 97, 100; Arm B week 0, 28, 72, 96, 97, 100, 124.

Population: The type-specific results are reported for participants remaining after exclusion of those with protocol violations, unevaluable specimens, or the presence of type-specific sero-positive antibody at baseline as well as any participants with any missing values at any time points.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 study entry5.1 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 28544.2 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 72256.4 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 96227.9 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 971604.8 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 1002473.6 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 study entry4.1 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 281396.6 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 72313.1 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 96286.5 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 971931.7 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 1003611.2 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 study entry5.5 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 285172.5 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 721126.4 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 961034.5 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 976167.8 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 10011205.6 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 study entry3.8 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 28931.2 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 72148.2 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 96142.0 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 97925.7 milli-Merck units [mMU]/mL
Arm A QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 1001530.7 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 10086.4 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 1241023.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 study entry5.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 study entry5.5 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 10018.7 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 study entry4.1 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 285.7 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 284.5 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 285.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 724.3 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 725.5 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 964.5 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 977.1 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 9717.1 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 965.5 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 10079.7 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 6 week 124678.8 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 725.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 study entry4.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 9712.1 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 284.2 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 124734.3 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 724.1 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 100142.6 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 964.0 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 16 week 1244113.8 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 11 week 9711.8 milli-Merck units [mMU]/mL
Arm B Placebo/QHPVSerum Anti-HPV Antibody Titers (cLIA)Serotype 18 week 965.0 milli-Merck units [mMU]/mL
Secondary

CD4 Count Over Time

Time frame: Arm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.

Population: Any participant who received at least one study vaccine/placebo and with non-missing CD4 counts at the respective time point.

ArmMeasureGroupValue (MEAN)
Arm A QHPVCD4 Count Over TimeCD4 count at study entry868 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 8907 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 12906 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 24864 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 28875 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 72823 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 96781 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 100831 cells/µL
Arm A QHPVCD4 Count Over TimeCD4 count at week 108839 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 28959 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 124920 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 72933 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 108980 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at study entry1013 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 96874 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 81018 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 120931 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 121056 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 100924 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 24993 cells/µL
Arm B Placebo/QHPVCD4 Count Over TimeCD4 count at week 104929 cells/µL
Secondary

CD4 Percent Over Time

Time frame: Arm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.

Population: Any participant who received at least one study vaccine/placebo and with non-missing CD4%.

ArmMeasureGroupValue (MEAN)
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 834 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 9633 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 2434 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 10035 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at study entry34 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 2834 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 1235 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 7233 percentage of total lymphocytes
Arm A QHPVCD4 Percent Over TimeCD4 percent at week 10835 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 10436 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 10834 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 12037 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 12435 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at study entry36 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 836 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 1237 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 2435 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 2834 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 7234 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 9634 percentage of total lymphocytes
Arm B Placebo/QHPVCD4 Percent Over TimeCD4 percent at week 10035 percentage of total lymphocytes
Secondary

HIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over Time

Time frame: Arm A week 0, 8, 12, 24, 28, 72, 96, 100 and 108; Arm B week 0, 8, 12, 24, 28, 72, 96, 100, 104, 108, 120, and 124.

Population: Any participant who received at least one study vaccine/placebo and with non-missing HIV-1 viral load at the respective time point.

ArmMeasureGroupValue (LOG_MEAN)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 722.7 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at study entry2.7 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 962.6 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 242.8 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1002.6 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1082.6 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 82.8 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 282.7 Log10 (copies/mL)
Arm A QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 122.7 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1082.5 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1202.3 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at study entry2.6 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1242.3 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1002.4 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 1042.4 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 82.8 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 122.8 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 242.7 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 282.8 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 722.7 Log10 (copies/mL)
Arm B Placebo/QHPVHIV-1 Viral Load (Ribonucleic Acid [RNA] Copies/ml) Over TimeLog10(RNA) at week 962.4 Log10 (copies/mL)

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026