Immunogenicity and Safety of V503 in Chinese Males 9 Through 19 Years Old (V503-053)

NCT ID: NCT05314023

Last Updated: 2023-01-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

1590 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-05-07

Study Completion Date

2029-02-19

Brief Summary

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This study is designed to demonstrate non-inferior immunogenicity of 3 doses of the 9-Valent Human Papillomavirus (9vHPV) vaccine (GARDASIL™9, V503) in Chinese males 9 through 19 years of age, and 2 doses of the 9vHPV vaccine in Chinese males 9 through 14 years of age, compared to the 3 dose regimen in Chinese males 20 through 26 years of age (from Merck Protocol V503-052). The primary hypothesis is that each of the 3-dose regimen in Chinese males aged 9 through 19 years and 2-dose regimens in Chinese males aged 9 through 14 years induces non-inferior competitive Luminex immunoassay (cLIA) geometric mean titers (GMTs) at one month post last dose compared to the 3-dose regimen in Chinese adult males aged 20 through 26 years. A noninferiority margin of 0.67 in the GMT ratio (9 through 19 years of age or 9 through 14 years of age vs 20 through 26 years of age) is used for each HPV type.

Detailed Description

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Conditions

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Genital Warts

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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9 to 19 Years Old: Day 1, Months 2 and 6

Chinese males 9 to 19 years old will receive a 0.5 mL intramuscular (IM) injection of 9-valent HPV (9vHPV) vaccine on Day 1, Month 2 and Month 6

Group Type EXPERIMENTAL

9vHPV vaccine

Intervention Type BIOLOGICAL

A 9-valent HPV vaccine (Types 6, 11, 16, 18, 31, 33, 45, 52, and 58) will be administered as a 0.5 mL IM injection.

9 to 14 Years Old: Day 1, and Month 6

Chinese males 9 to 14 years old will receive a 0.5 mL IM injection of 9vHPV vaccine on Day 1 and Month 6

Group Type EXPERIMENTAL

9vHPV vaccine

Intervention Type BIOLOGICAL

A 9-valent HPV vaccine (Types 6, 11, 16, 18, 31, 33, 45, 52, and 58) will be administered as a 0.5 mL IM injection.

9 to 14 Years Old: Day 1 and Month 12

Chinese males 9 to 14 years old will receive a 0.5 mL IM injection of 9vHPV vaccine on Day 1 and Month 12

Group Type EXPERIMENTAL

9vHPV vaccine

Intervention Type BIOLOGICAL

A 9-valent HPV vaccine (Types 6, 11, 16, 18, 31, 33, 45, 52, and 58) will be administered as a 0.5 mL IM injection.

Interventions

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9vHPV vaccine

A 9-valent HPV vaccine (Types 6, 11, 16, 18, 31, 33, 45, 52, and 58) will be administered as a 0.5 mL IM injection.

Intervention Type BIOLOGICAL

Other Intervention Names

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V503 GARDASIL™9

Eligibility Criteria

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Inclusion Criteria

* Is a healthy Chinese male.
* Has not had sexual debut at the time of enrollment, and does not plan on becoming sexually active during the vaccination period (Day 1 through one month post last dose).

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 6 months or plans to receive any before one month post last dose.
* 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.
Minimum Eligible Age

9 Years

Maximum Eligible Age

19 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Merck Sharp & Dohme LLC

Locations

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Liucheng County Centers for Disease Control and Prevention ( Site 0005)

Liuzhou, Guangxi, China

Site Status

Center for Disease Control and Prevention of Rong An ( Site 0006)

Liuzhou, Guangxi, China

Site Status

Loudi Public Health Hospital (Loudi Occupational Disease Prevention And Treatment Hospital) ( Site 0

Louxing District, Hunan, China

Site Status

Yuechi Disease Prevention and Control Center ( Site 0002)

Guang’an, Sichuan, China

Site Status

Santai County Center for Disease Control and Prevention ( Site 0001)

Mianyang, Sichuan, China

Site Status

Countries

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China

Other Identifiers

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V503-053

Identifier Type: OTHER

Identifier Source: secondary_id

V503-053

Identifier Type: -

Identifier Source: org_study_id

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