NCT04206813Active, not recruitingPhase 4
An Exploratory Open-Label Clinical Trial Evaluating the Immunogenicity of the 9-valent 2-dose HPV Vaccination Regimen
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
Source: ClinicalTrials.gov · Last updated 29 Apr 2026
Brief summary (registry, in English)
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.
- Status (registry)
- Active, not recruiting
- Phase (registry)
- Phase 4
- Study type
- Interventional
- Enrollment
- 352 (actual)
- First submitted
- 15 Dec 2019
- Start date
- 1 Dec 2020
- Primary completion date
- 15 Apr 2026
- Lead sponsor
- Boston Medical Center
- NCT number
- NCT04206813
What you commit to
- Study type: Interventional · Phase 4
- Participants enrolled: 352
- From 1 Dec 2020 to the primary completion date, 15 Apr 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Prior HPV vaccination
- Immunocompromised/previous immunosuppressive therapy
Other illness
- A history of severe allergic reaction, including known allergy to any vaccine component, specially severe allergic to yeast
- Thrombocytopenia or other coagulation disorder
Other
- Currently pregnant
- Currently breastfeeding
Who the study is looking for
- Women receiving care at Boston Medical Center
Age in the registry: 16 years to 45 years · Sex: Female · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Boston Medical Center Coordinator of this site? Confirm its status | Boston | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.