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Assessing Durable Antibody Response to HPV Vaccination

Assessing Immunological Basis of Durable Antibody Responses to 9-valent HPV Vaccination

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05031078
Enrollment
17
Registered
2021-09-01
Start date
2021-12-21
Completion date
2026-05-31
Last updated
2025-10-23

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

Conditions

HPV

Keywords

HPV

Brief summary

This is a single center, longitudinal cohort study in which subjects will receive 9-valent HPV vaccine according to package insert (i.e., one dose of 9-valent HPV vaccine on day (D) 0 followed by a second dose 2 months later and a third dose 6 months later). Immune responses in the blood, saliva, bone marrow, and lymph nodes will be assessed in subjects receiving the HPV vaccine. Blood samples for immunologic testing will be collected at screening (from D-60 to D-45), on D0 (before vaccination), D1 (optional visit), D7±1, D14±5, D30±5, D60±5 (Visit 8, before vaccination), Visit 8 +1 day (optional visit), Visit 8 + 7±1 days, Visit 8 + 14±5 days, Visit 8 + 30±5 days, D180±5 (Visit 13, before vaccination), Visit 13 + 7±1 days, Visit 13 + 14±5 days, Visit 13 + 30±5 days, D365±14, D730±14, D1095±14, D1460±14, D1825±30. Saliva samples for antibody testing will be collected on D0 (before vaccination), D30, D60 (before vaccination), Visit 8 + 30±5 days, D180 (before vaccination), Visit 13 + 30±5 days, D365, and D730. Axillary lymph node sampling by fine needle aspiration will be done 3 times per group. Group 1 will have lymph node sampling done D-30 to D0, D14, and D30. Group 2 will have lymph node sampling done D60, Visit 8 + 14±5 days, and Visit 8 + 30±5 days. Group 3 will have lymph node sampling D180, Visit 13 + 14±5 days, and Visit 13 + 30±5 days. Bone marrow sampling will be done for all groups at D730±14 and D1825±30.

Detailed description

Human papillomaviruses (HPV) cause cervical, anal, oropharyngeal, vulvar, vaginal, and penile cancers. There are over 200 types of HPV; 12 are known to cause cancer. The current HPV vaccine is a subunit vaccine, meaning it is made of only part of the virus (a protein) and cannot infect humans. The HPV vaccine is highly effective at preventing disease by HPV types that cause 90% of cancer cases and 90% of genital warts cases in women and men who do not have ongoing or prior HPV infection. Most vaccines protect by generating antibodies. Importantly, the HPV vaccine, first approved in 2006, has been shown to make high levels of antibodies against HPV that last for \>10 years. The durability of HPV vaccine antibody levels is exceptional compared to other approved and experimental subunit vaccines whose antibody levels drop more rapidly. However, how the HPV vaccine - let alone any vaccine - generates long-lasting antibodies is not understood. Understanding how vaccines make high levels of long-lasting antibodies will help the efforts to successfully and reliably design new vaccines that make these highly desired responses (like vaccines against new pandemics). The investigators designed this study to better understand how the HPV vaccine generates such high levels of long-lasting antibodies in humans. To do this, the investigators need to study early immune responses in lymph nodes, which is where cells that make antibodies (B cells) are activated by the vaccine. The investigators will also need to study immune responses in blood. For example, to measure the levels of antibodies in blood and also the levels of cells that help B cells (helper T cells). As the HPV vaccine can protect against oropharyngeal cancer, the study team aim to understand the level of antibodies in the saliva and how the antibodies compare to blood. Finally, antibodies themselves are not long-lived as proteins, but the cells that make these antibodies are (specialized B cells called plasma cells). Plasma cells are found in the bone marrow. It is important that the research team finds and study these cells making antibodies against HPV, so the investigators can better understand how they contribute to long-lasting antibody levels.

Interventions

BIOLOGICALGardasil-9

Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180 The 9-valent HPV vaccine, or Gardasil-9, is a non-infectious recombinant vaccine prepared from the purified virus-like particles (VLPs) of the major capsid (L1) protein of HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58. Gardasil-9 is supplied as a 0.5-mL single-dose vial or 0.5-mL single-dose prefilled Luer Lock syringe with tip cap.

1-2% lidocaine injections. 1% lidocaine, an FDA approved local anesthetic, will be injected subcutaneously to numb the area of the lymph node being sampled; whereas 1-2% lidocaine will be injected into the tissue surrounding the area where the bone marrow will be removed. In adults the recommended dose is 7 mg/kg with a maximum of 500 mg.

Sponsors

Emory University
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Individuals aged 18-45 years old (inclusive), as the HPV vaccine is approved for this age range in adults * BMI ≤ 32. * Able to understand and give informed consent (provided in American English). * Must be in good health based on physical examination, vital signs, medical history, and the investigator's clinical judgment. * Must be available and willing to participate for the duration of this study * Must be willing to undergo lymph node fine needle aspiration and bone marrow aspiration * Must be willing to consent to the future use of remaining (residual) samples/specimens.

Exclusion criteria

* Ever received a dose of an HPV vaccine * HPV 6, 11, 16, 18, 31, 33, 45, 52 or 58 seropositivity * Any history of genital warts, an abnormal pap smear, or positive HPV DNA test * Has known allergy or history of anaphylaxis or other serious adverse reaction to a vaccine or vaccine products * Has known allergy or history of anaphylaxis to yeast or products containing yeast * Any allergy to lidocaine. * Pregnancy or breast feeding. * Subjects who believe they cannot tolerate the lymph node fine needle aspirate or bone marrow aspirate procedures without sedation * Any history of lymphoma involving axillary nodes, any history of breast cancer, bilateral inflammatory process of upper arms in the past 2 weeks, prior breast or axillary biopsy and/or surgery that in the opinion of the investigator would affect the immune response results. * Local infection, lymphadenitis, or rash in targeted area. * Received any vaccine from 14 days before vaccine dose until 30 days after each vaccine dose.\* \*An individual who is initially excluded from study participation based on one or more of the time-limited

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With a Minimum Four-fold Rise in Post-vaccination HPV-16 and HPV-18 Neutralizing Antibody Titers30 days after receiving the third and final vaccine dose (approximately Day 210 after first vaccine dose)Determining the number of participants with a minimum four-fold rise in post-vaccination HPV-16 and HPV-18 neutralizing antibody titers determined using an HPV pseudovirus neutralization assay

Secondary

MeasureTime frameDescription
Change in Number of HPV-specific Memory B Cell (Bmem) Response From BaselineBaseline (Day 0), Day 30, Day 180, Day 210, Day 365, Day 730 post-interventionMagnitude of HPV specific Bmem responses will be assessed at baseline and following 9-valent HPV vaccination Baseline (Day 0), Day 30, Day 180, Day 210, Day 365, Day 730

Countries

United States

Participant flow

Participants by arm

ArmCount
Group 1: Lymph Node Sampling at D-30 to D0, D14 and D30
Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. Group 1 will undergo an FNA at D-30 to D0. Participants will repeat the procedure at D14±5 and D30±5. Bone marrow sampling will be done for all groups at D730 and D1825. Gardasil-9: Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. The 9-valent HPV vaccine, or Gardasil-9, is a non-infectious recombinant vaccine prepared from the purified virus-like particles (VLPs) of the major capsid (L1) protein of HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58. Gardasil-9 is supplied as a 0.5-mL single-dose vial or 0.5-mL single-dose prefilled Luer Lock syringe with tip cap. Lidocaine injections: 1-2% lidocaine injections. 1% lidocaine, an FDA approved local anesthetic, will be injected subcutaneously to numb the area of the lymph node being sampled; whereas 1-2% lidocaine will be injected into the tissue surrounding the area where the bone marrow will be removed. In adults the recommended dose is 7 mg/kg with a maximum of 500 mg.
8
Group 2: Lymph Node Sampling at D60, D74 and D90
Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. Participants will undergo an FNA on the same day, but prior to, the second vaccine dose (D60±5; Visit 8) or up to 5 days before. Participants will repeat the procedure at Visit 8 + 14±5 days and Visit 8 + 30±5 days. Bone marrow sampling will be done for all groups at D730 and D1825. Gardasil-9: Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. The 9-valent HPV vaccine, or Gardasil-9, is a non-infectious recombinant vaccine prepared from the purified virus-like particles (VLPs) of the major capsid (L1) protein of HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58. Gardasil-9 is supplied as a 0.5-mL single-dose vial or 0.5-mL single-dose prefilled Luer Lock syringe with tip cap. Lidocaine injections: 1-2% lidocaine injections. 1% lidocaine, an FDA approved local anesthetic, will be injected subcutaneously to numb the area of the lymph node being sampled; whereas 1-2% lidocaine will be injected into the tissue surrounding the area where the bone marrow will be removed. In adults the recommended dose is 7 mg/kg with a maximum of 500 mg.
5
Group 3: Lymph Node Sampling at D180, D194 and D210
Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. Group 3 will undergo an FNA on the same day, but prior to, the third vaccine dose (D180±5; Visit 13) or up to 5 days before. Participants will repeat the procedure at Visit 13 + 14±5 days and Visit 13 + 30±5 days. Bone marrow sampling will be done for all groups at D730 and D1825. Gardasil-9: Participants will receive 3 doses of 9-valent HPV vaccine (Gardasil 9) at D0, D60, and D180. The 9-valent HPV vaccine, or Gardasil-9, is a non-infectious recombinant vaccine prepared from the purified virus-like particles (VLPs) of the major capsid (L1) protein of HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58. Gardasil-9 is supplied as a 0.5-mL single-dose vial or 0.5-mL single-dose prefilled Luer Lock syringe with tip cap. Lidocaine injections: 1-2% lidocaine injections. 1% lidocaine, an FDA approved local anesthetic, will be injected subcutaneously to numb the area of the lymph node being sampled; whereas 1-2% lidocaine will be injected into the tissue surrounding the area where the bone marrow will be removed. In adults the recommended dose is 7 mg/kg with a maximum of 500 mg.
4
Total17

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyWithdrawal by Subject010

Baseline characteristics

CharacteristicGroup 1: Lymph Node Sampling at D-30 to D0, D14 and D30TotalGroup 3: Lymph Node Sampling at D180, D194 and D210Group 2: Lymph Node Sampling at D60, D74 and D90
Age, Continuous38.6 years
STANDARD_DEVIATION 5.3
34.4 years
STANDARD_DEVIATION 7.2
32.2 years
STANDARD_DEVIATION 7.8
29.4 years
STANDARD_DEVIATION 6.4
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants2 Participants2 Participants0 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
7 Participants14 Participants2 Participants5 Participants
Region of Enrollment
United States
8 participants17 participants4 participants5 participants
Sex: Female, Male
Female
4 Participants7 Participants2 Participants1 Participants
Sex: Female, Male
Male
4 Participants10 Participants2 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 80 / 50 / 4
other
Total, other adverse events
0 / 80 / 50 / 4
serious
Total, serious adverse events
0 / 80 / 50 / 4

Outcome results

Primary

Number of Participants With a Minimum Four-fold Rise in Post-vaccination HPV-16 and HPV-18 Neutralizing Antibody Titers

Determining the number of participants with a minimum four-fold rise in post-vaccination HPV-16 and HPV-18 neutralizing antibody titers determined using an HPV pseudovirus neutralization assay

Time frame: 30 days after receiving the third and final vaccine dose (approximately Day 210 after first vaccine dose)

Population: Participants that completed the primary outcome (n = 16) were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Group 1: Lymph Node Sampling at D-30 to D0, D14 and D30Number of Participants With a Minimum Four-fold Rise in Post-vaccination HPV-16 and HPV-18 Neutralizing Antibody Titers8 Participants
Group 2: Lymph Node Sampling at D60, D74 and D90Number of Participants With a Minimum Four-fold Rise in Post-vaccination HPV-16 and HPV-18 Neutralizing Antibody Titers4 Participants
Group 3: Lymph Node Sampling at D180, D194 and D210Number of Participants With a Minimum Four-fold Rise in Post-vaccination HPV-16 and HPV-18 Neutralizing Antibody Titers4 Participants
Secondary

Change in Number of HPV-specific Memory B Cell (Bmem) Response From Baseline

Magnitude of HPV specific Bmem responses will be assessed at baseline and following 9-valent HPV vaccination Baseline (Day 0), Day 30, Day 180, Day 210, Day 365, Day 730

Time frame: Baseline (Day 0), Day 30, Day 180, Day 210, Day 365, Day 730 post-intervention

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