Efficacy, Immunogenicity, and Safety of V503 in Chinese Males (V503-052)
About the study
This study will evaluate the efficacy, immunogenicity, and safety of 9-valent human papillomavirus (9vHPV; V503) vaccine in Chinese men 20 to 45 years of age. It will enroll heterosexual men (HM) and men who have sex with men (MSM), will be stratified by age and sexual orientation, and will have two stages. The primary hypothesis of Stage I is: 9vHPV vaccine reduces the combined incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related external genital and intra-anal 12-month persistent infection (PI) compared with placebo in males 20 to 45 years of age who are seronegative at Day 1 and polymerase chain reaction (PCR) negative from Day 1 through one month post-Dose 3 to the relevant HPV type. The primary hypothesis of Stages I and II combined is: 9vHPV vaccine reduces the combined incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related genital warts, penile/perianal/perineal intraepithelial neoplasia (PIN), or penile/perianal/perineal cancer compared with placebo in males 20 to 45 years of age who are seronegative at Day 1 and PCR negative from Day 1 through one month post-Dose 3 to the relevant HPV type.
Who can take part
You may be eligible to participate in the study if you meet the following criteria:
INCLUSION CRITERIA
Inclusion Criteria:
- Is a Chinese male.
- Has no more than 5 lifetime sexual partners.
EXCLUSION CRITERIA
Exclusion Criteria:
- Has a history of known prior vaccination with an HPV vaccine.
- Has a history of HPV-related external genital lesions, HPV-related intra-anal lesions, or HPV-related head and neck cancer.
- Has a history of severe allergic reaction that required medical intervention.
- Has received immune globulin or blood-derived products in the past 3 months or plans to receive any before Month 7 of the study.
- Has a history of splenectomy, is currently immunocompromised, or has been diagnosed with immunodeficiency, human immunodeficiency virus (HIV), lymphoma, leukemia, systemic lupus erythematosus, rheumatoid arthritis, juvenile rheumatoid arthritis, inflammatory bowel disease, or other autoimmune condition.
- Has received immunosuppressive therapy in the past year, excluding inhaled, nasal, or topical corticosteroids and certain regimens of systemic corticosteroids.
- Has a known thrombocytopenia or coagulation disorder that would contraindicate IM injections.
Study Locations
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How to Apply
Contact the study center to learn if this study is a good match for you.
Study’s details
Contition
Papillomavirus Infections
Age (in years)
20 - 45
Phase
Phase 3
Participants needed
8100
Est. Completion Date
May 25, 2029
Treatment type
Interventional
Sponsor
Merck Sharp & Dohme LLC
ClinicalTrials.gov identifier
NCT05285826
Study number
V503-052
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