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A Registry-Based Extension of Protocol V503-001 in Countries with Centralized Cervical Cancer Screening Infrastructures to Evaluate the Long-Term Effectiveness, immunogenicity, and Safety of Multivalent Human Papillomavirus (HPV) L1 Virus-Like Particle (VLP) Vaccine as Administered to 16- to 26- Year- Old Women.

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-508683-30-00
Acronym
V503-021
Enrollment
2220
Registered
2024-05-24
Start date
2008-03-14
Completion date
Unknown
Last updated
2025-12-18

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

Conditions

​9vHPV vaccine is indicated in females ≥ 9 years of age in the prevention of cervical, vulvar, vaginal, and anal cancer; precancerous or dysplastic lesions; and persistent infections caused by Human Papillomavirus (HPV) types 16, 18, 31, 33, 45, 52, and 58, and genital warts (condyloma acuminata) caused by HPV types 6 and 11.​

Brief summary

Combined Incidence of Human Papillomavirus (HPV) Type 16, 18, 31, 33, 45, 52, or 58-related CIN Grades 2 or 3, Adenocarcinoma in Situ (AIS), and Cervical Cancer in Cohort 1

Detailed description

Combined Incidence of CIN 2, CIN 3, AIS, or cervical cancer related to HPV 35, 39, 51, 56, or 59, Combined Incidence of CIN (any grade), AIS, cervical cancer, vulvar cancer, or vaginal cancer related to HPV 6, 11, 16, 18, 31, 33, 45, 52, or 58, Geometric Mean Titers (GMTs) of HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58, Seropositivity rates of HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58

Interventions

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Combined Incidence of Human Papillomavirus (HPV) Type 16, 18, 31, 33, 45, 52, or 58-related CIN Grades 2 or 3, Adenocarcinoma in Situ (AIS), and Cervical Cancer in Cohort 1

Secondary

MeasureTime frame
Combined Incidence of CIN 2, CIN 3, AIS, or cervical cancer related to HPV 35, 39, 51, 56, or 59, Combined Incidence of CIN (any grade), AIS, cervical cancer, vulvar cancer, or vaginal cancer related to HPV 6, 11, 16, 18, 31, 33, 45, 52, or 58, Geometric Mean Titers (GMTs) of HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58, Seropositivity rates of HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58

Countries

Denmark, Norway, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026