An Exploratory Open-Label Clinical Trial Evaluating the Immunogenicity of the 9-valent 2-dose HPV Vaccination Regimen

March 25, 2024 updated by: Boston Medical Center

An Open-Label Clinical Trial Evaluating the Immunogenicity of the 9vHPV Vaccination Regimen Over 6 Months Among Women Aged 16 to 45 Years Old, An Exploratory Immunogenicity Study

The goal of this study is to explore and evaluate whether a 2-dose schedule of Gardasil 9 among young and mid-adult women 16-45 years of age is generally safe and immunogenic, with an antibody response that is not inferior to that observed of a 3-dose schedule of Gardasil 9 among women aged 16-26 years old. The investigators thought that having a 2-dose vaccination regimen for individuals 16 to 45 would provide a more robust dataset than those of 27 to 45 years old.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

The investigators will identify potential eligible subjects from the Boston Medical Center (BMC) Clinical Data Warehouse from the following BMC clinics: Pediatrics, Adolescent Medicine, Family Medicine, Obstetric/ Gynecology (OB/GYN), and Women's Health/Adult Primary Care. The research team will mail a recruitment opt-out letter signed by the principal investigator to the participant along with a study flyer. The recruitment letter will inform the participant that a research member may contact them via phone within two week to provide more information regarding the study.

Participants opting-in will be called and interviewed with the study recruitment script and eligibility will be determined. Eligible participants who agree to participate (in-person or over the phone), will be scheduled to come to the Boston University (BU) General Clinical Research Unit (GCRU) to complete the consent process. At the baseline visit participants will be assigned into the appropriate group (control vs. intervention) based on their age.

Study Type

Interventional

Enrollment (Estimated)

360

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02118
        • Recruiting
        • Boston Medical Center
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 43 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Women receiving care at Boston Medical Center

Exclusion Criteria:

  • Currently pregnant
  • Prior HPV vaccination
  • A history of severe allergic reaction, including known allergy to any vaccine component, specially severe allergic to yeast
  • Immunocompromised/previous immunosuppressive therapy
  • Thrombocytopenia or other coagulation disorder
  • Currently breastfeeding

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Intervention group
240 eligible women will receive a 2-dose regimen of Gardasil 9 at (0 and 6 months, followed by a rescue 3rd dose at month 12)
Drug: Gardasil 9 2 dose regimen
a 2-dose regimen of Gardasil 9 at 0 and 6 months
Other Names:
  • Human Papillomavirus 9-valent Vaccine, Recombinant
Drug: Gardasil 9 rescue dose
A rescue dose of Gardasil 9 will be given at 12 months
Other Names:
  • Human Papillomavirus 9-valent Vaccine, Recombinant
Active Comparator: Control group
120 eligible women will receive the standard 3-dose regimen of Gardasil 9 at (0, 2, 6 months)
Drug: Gardasil 9 3 dose regimen
standard 3-dose regimen of Gardasil 9 at 0, 2, 6 months
Other Names:
  • Human Papillomavirus 9-valent Vaccine, Recombinant

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in immunogenicity of Gardasil 9
Time Frame: baseline and 7 months
Immunogenicity will be measured by serum antibodies assessed by ELISA to the nine HPV types (anti-HPV 6/11/16/18/31/33/45/ 52/58 where positive anti-HPV serum levels are defined as >30, >16, >20, >24, >10, >8, >8, >8, or >8 milli Merck units (mMU)/mL respectively).
baseline and 7 months
Change in geometric mean titers ratios
Time Frame: baseline and 7 months
The geometric mean titers (GMT) ratios will be determined by a post-vaccination geometric mean titer (GMT) ratio with a pre-stated analysis of variance model (95% Confidence Interval lower bound >0.5).
baseline and 7 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of participants with HPV seropositivity at day 1
Time Frame: day 1
The number of participant who test positive in mili Unit (nMU) which will be will be defined as anti-HPV 6/11/16/18/31/33/45/ 52/58 positive if her anti-HPV serum level is >30, >16, >20, >24, >10, >8, >8, >8, or >8 milli Merck units (mMU)/mL for the 9 types, respectively. The serum testing will be under the direction of Merck research lab.
day 1
Number of participants with HPV seropositivity at month 7
Time Frame: month 7
The number of participant who test positive in mili Unit (nMU) which will be will be defined as anti-HPV 6/11/16/18/31/33/45/ 52/58 positive if her anti-HPV serum level is >30, >16, >20, >24, >10, >8, >8, >8, or >8 milli Merck units (mMU)/mL for the 9 types, respectively. The serum testing will be under the direction of Merck research lab.
month 7

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Boston Medical Center

Collaborators

Merck Sharp & Dohme LLC

Investigators

  • Principal Investigator: Natalie Joseph, MD MPH, Boston Medical Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2020

Primary Completion (Estimated)

September 1, 2024

Study Completion (Estimated)

September 1, 2025

Study Registration Dates

First Submitted

December 15, 2019

First Submitted That Met QC Criteria

December 18, 2019

First Posted (Actual)

December 20, 2019

Study Record Updates

Last Update Posted (Actual)

March 26, 2024

Last Update Submitted That Met QC Criteria

March 25, 2024

Last Verified

March 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-39051

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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