Completed

FUTURE IIA Randomized, Worldwide, Placebo-Controlled, Double-Blind Study to Investigate the Safety, Immunogenicity, and Efficacy on the Incidence of HPV 16/18-Related CIN 2/3 or Worse of the Quadrivalent HPV (Types 6, 11, 16, 18) L1 Virus-Like Particle (VLP) Vaccine in 16- to 23-Year Old Women - The FUTURE II Study (Females United to Unilaterally Reduce Endo/Ectocervical Disease)

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What is being tested

Gardasil, human papillomavirus (type 6, 11, 16, 18) recombinant vaccine

+ Matching Placebo

Biological
Who is being recruted

Urogenital Diseases+27

+ Genital Diseases

+ Uterine Cervical Diseases

From 16 to 23 Years
See all eligibility criteria
How is the trial designed

Prevention Study

Placebo-ControlledPhase 3
Interventional
Study Start: June 2002
See protocol details

Summary

Principal SponsorMerck Sharp & Dohme LLC
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: June 14, 2002

Actual date on which the first participant was enrolled.

In the 4-year Base Study (V501-015) (NCT00092534), participants were randomized in a 1:1 order to receive 3 doses of GARDASIL™ or matching placebo at Day 1, Month 2, and Month 6 and were assessed for efficacy, immunogenicity, and safety. In the Base Study Extension (EXT) \[V501-015-10\], participants who received placebo or only 1 dose of GARDASIL™ in the Base Study, were given 3 doses of open-label GARDASIL™ at EXT Day 1, EXT Month 2, and EXT Month 6, and were followed to EXT Month 7. Participants who who received 2 doses of GARDASIL™ in the Base Study were given 1 dose of GARDASIL™ at EXT Day 1 and were followed for 15 days (day of vaccination plus 14 days). In the 10-year Base Study Long-Term Follow-Up (LTFU) \[V501-015-21\] the effectiveness, immunogenicity and safety of GARDASIL™ was assessed during a period of 10 years following completion of the Base Study (V501-015) \[14 years after the first dose of GARDASIL™\] and, for some measures, the Base Study EXT (V501-015-10) \[10 years after the first dose of GARDASIL™\]. Participants from Denmark, Iceland, Norway and Sweden who participated in the Base Study were eligible to enroll in the LTFU. Effectiveness and safety was assessed by registry-based follow-up, and immunogenicity was assessed by serological testing at approximately Year 5 and Year 10 of the V501-015-21 LTFU. An 8-year extension was added to the LTFU (V501-015-22\] to continue the evaluation of the long-term effectiveness and immunogenicity of GARDASIL™. Effectiveness and safety will be assessed by registry-based follow-up, and immunogenicity will be assessed by serological testing at approximately Year 4 and Year 8 of the extension of the LTFU.

Official TitleA Randomized, Worldwide, Placebo-Controlled, Double-Blind Study to Investigate the Safety, Immunogenicity, and Efficacy on the Incidence of HPV 16/18-Related CIN 2/3 or Worse of the Quadrivalent HPV (Types 6, 11, 16, 18) L1 Virus-Like Particle (VLP) Vaccine in 16- to 23-Year Old Women - The FUTURE II Study (Females United to Unilaterally Reduce Endo/Ectocervical Disease)
NCT00092534
Principal SponsorMerck Sharp & Dohme LLC
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

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

12167 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Prevention Study

Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Female

Biological sex of participants that are eligible to enroll.

From 16 to 23 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Urogenital DiseasesGenital DiseasesUterine Cervical DiseasesUterine Cervical NeoplasmsCommunicable DiseasesCondylomata AcuminataDNA Virus InfectionsFemale Urogenital Diseases and Pregnancy ComplicationsGenital Diseases, FemaleGenital Neoplasms, FemaleInfectionsNeoplasmsNeoplasms by SitePathologic ProcessesSexually Transmitted DiseasesSkin DiseasesSkin Diseases, InfectiousPathological Conditions, Signs and SymptomsTumor Virus InfectionsUrogenital NeoplasmsUterine DiseasesUterine NeoplasmsVirus DiseasesWartsSexually Transmitted Diseases, ViralSkin Diseases, ViralSkin and Connective Tissue DiseasesDisease AttributesPapillomavirus InfectionsFemale Urogenital Diseases

Criteria

Inclusion Criteria for the Base Study: * Healthy women with an intact uterus with lifetime history of 0-4 sexual partners --For Extension Phase: * Participant received placebo or an incomplete vaccination series in the original study --For LTFU: * Participant was randomized into the Base Study from Denmark, Iceland, Norway, or Sweden. * Agreed to allow passive follow-up (retrospective review of registry data), analysis of biopsy specimens, future contact from National Registry Study Center and serum collection Exclusion Criteria for the Base Study: * Prior Human Papilloma Virus (HPV) vaccination * Prior abnormal Paps * Prior history of genital warts --For Extension Phase: * Prior complete HPV vaccination series * Subject lives in a country in which Gardasil is approved and is within the age range of the local labeling for Gardasil --For LTFU Study: * There were no exclusion criteria that did not overlap the inclusion criteria for this study.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental
The Vaccination Period for the base study encompassed Day 1 through Month 7, during which time study subjects in Group 1 were vaccinated (at Day 1, Month 2 and Month 6) with the Quadrivalent HPV vaccine.

Group II

Placebo
The Vaccination Period for the base study encompassed Day 1 through Month 7, during which time study subjects in Group 2 were vaccinated (at Day 1, Month 2 and Month 6) with placebo.

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has no location dataSave this study to your profile to know when the location data is available.
CompletedNo study centers