Clinical trial · Interventional
Efficacy, Immunogenicity, and Safety Study of V503 (9-valent Human Papillomavirus [9vHPV] Vaccine) in Japanese Males (V503-064)
A Phase 3, Randomized, Placebo-controlled Clinical Study to Evaluate the Efficacy, Immunogenicity and Safety of the 9vHPV Vaccine in Japanese Males, 16 to 26 Years of Age.
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The purposes of this phase 3, double-blind, placebo-controlled clinical study are to evaluate the efficacy of V503 in preventing human papillomavirus (HPV)-related anogenital persistent infection, and to evaluate the safety/tolerability of V503, in Japanese males who are 16 to 26 years of age. It is hypothesized that administration of a 3-dose regimen of V503 reduces the combined incidence of HPV 6/11/16/18-related anogenital persistent infection, as well as the combined incidence of HPV 31/33/45/52/58-related anogenital persistent infection, compared with placebo. The study includes a Base Study to assess efficacy and safety of V503, and an Extension Study. Participants who received placebo in the Base Study will be eligible to receive V503 vaccine on Day 1, Month 2, and Month 6 of the Extension Study. Participants who received less than 3 doses of V503 in the Base Study will be offered the opportunity to complete the 3-dose regimen in the Extension Study.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Neoplasms, Anal | Anal Neoplasm | ONTOLOGY_EXACT | 0.98 |
| Warts, Genital | Condyloma Acuminatum | ALIAS | 0.90 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Placebo | Other | — | UNRESOLVED |
| V503 | Biological | — | UNRESOLVED |
Design
Arms and outcomes
Arms (4)
- type
- EXPERIMENTAL
- label
- V503
- description
- In the base study, participants receive an intramuscular (IM) injection of V503 at Day 1, Month 2, and Month 6.
- interventionNames
- Biological: V503
- type
- PLACEBO_COMPARATOR
- label
- Placebo
- description
- In the base study, participants receive an IM injection of placebo at Day 1, Month 2, and Month 6.
- interventionNames
- Other: Placebo
- type
- EXPERIMENTAL
- label
- V503 → Open Label V503 Extension Study
- description
- Participants from V503 arm of the base study who do not complete the 3-dose series receive 1 or 2 doses of V503, on Day 1, or Day 1 and Month 4 of the open label extension study.
Eligibility
Eligibility (as posted)
- Sex
- Male
- Minimum age
- 16 Years
- Maximum age
- 26 Years
Show eligibility criteria text
Inclusion Criteria: * Is a Japanese male 16 to 26 years of age * Has no more than 5 lifetime sexual partners Exclusion Criteria: * Has a history of known prior vaccination with an HPV vaccine or plans to receive one outside the study * Has a history of external genital warts * 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 plan 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 intramuscular injections * Has ongoing alcohol or drug abuse within the past 12 months
References
Publications (2)
- DERIVEDHisamoto K, Yamanaka M, Nomura M, Kanno N, Giuliano AR, Wan K, Fukao Y, Oshima N, Wakana A, Tanaka Y, Luxembourg A, Sawata M. Efficacy, immunogenicity, and safety of the 9-valent human papillomavirus vaccine in males aged 16-26 years in Japan: a randomised, double-blind, placebo-controlled trial. Lancet Infect Dis. 2026 Aug 3:S1473-3099(26)00291-4. doi: 10.1016/S1473-3099(26)00291-4. Online ahead of print. PMID 42546724
- DERIVEDBergman H, Henschke N, Arevalo-Rodriguez I, Buckley BS, Crosbie EJ, Davies JC, Dwan K, Golder SP, Loke YK, Probyn K, Petkovic J, Villanueva G, Morrison J. Human papillomavirus (HPV) vaccination for the prevention of cervical cancer and other HPV-related diseases: a network meta-analysis. Cochrane Database Syst Rev. 2025 Nov 24;11(11):CD015364. doi: 10.1002/14651858.CD015364.pub2. PMID 41276263