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NCT Number: NCT05285826

Efficacy, Immunogenicity, and Safety of V503 in Chinese Males (V503-052)

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.

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This study is active but is not currently recruiting participants.

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Key information

Conditions

Papillomavirus Infections Communicable Diseases DNA Virus Infections Disease Attributes Genital Diseases Infections Pathologic Processes Pathological Conditions, Signs and Symptoms Sexually Transmitted Diseases Sexually Transmitted Diseases, Viral Tumor Virus Infections Urogenital Diseases Virus Diseases

Age range

20 year–45 year

Sex eligibility

Male

Study type

Interventional

Phase

Phase 3

Primary location

Beijing Youan Hospital ( Site 0001), Beijing, Beijing Municipality, China

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Is a Chinese male.
  • Has no more than 5 lifetime sexual partners.

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.

Treatment and study plan

9vHPV Vaccine

Biological

9-valent human papillomavirus (Types 6, 11, 16, 18, 31, 33, 45, 52, 58) L1 virus-like particle vaccine administered as a 0.5-mL IM injection

Other names: V503

Placebo

Other

Sterile saline solution administered as a 0.5 mL IM injection

Primary outcomes

  1. Stage I: Combined Incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related External Genital and Intra-anal 12-month Persistent Infection

    Time frame: Up to approximately 30 months

    This endpoint is defined as having occurred if a participant is positive for the same HPV type by the HPV PCR assay in the penile, scrotum, perineal, perianal and intra-anal swabs, biopsy, or excised samples obtained in 3 or more consecutive visits over a period of at least 12 months.

  2. Stages I and II: Combined Incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related Genital Warts, PIN, or Penile/Perianal/Perineal Cancer

    Time frame: Up to approximately 78 months

    This endpoint is defined as having occurred if on a single biopsy or excised tissue from a participant, there is: (a) a pathology panel consensus diagnosis of genital warts, PIN of any grade, or penile/perianal/perineal cancer; and (b) detection of at least 1 of HPV types 6, 11, 16, 18, 31, 33, 45, 52 or 58 by Thinsection PCR in an adjacent section from the same tissue block.

Secondary outcomes

  1. Stage 1: Combined Incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related External Genital and Intra-anal 6-month Persistent Infection

    Time frame: Up to approximately 30 months

    This endpoint is defined as having occurred if a participant is positive for the same HPV type by the HPV PCR assay in the penile, scrotum, perineal, perianal and intra-anal swabs, biopsy, or excised samples obtained in 2 or more consecutive visits over a period of at least 6 months.

  2. Stage 1: Geometric Mean Titers (GMTs) to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 at One Month Post-Dose 3

    Time frame: Month 7

    GMTs to HPV Types 6, 11, 16, 18, 31, 33, 45, 52, and 58 will be measured with a Competitive Luminex Immunoassay (cLIA).

  3. Stage 1: Percentage of Participants Achieving Seroconversion to HPV 6, 11, 16, 18, 31, 33, 45, 52, or 58 at One Month Post-Dose 3

    Time frame: Month 7

    A participant who changes serostatus from seronegative at Day 1 to seropositive at one month post-Dose 3 for a given HPV type is considered to have achieved seroconversion for that type. A participant with a titer at or above the seropositivity cutoff for a given HPV type, as measured by cLIA, is considered seropositive for that type.

  4. Stage I: Percentage of Participants Who Report at Least 1 Solicited Injection-site Adverse Event (AE)

    Time frame: Day 1 through Day 8 following any vaccination

    An AE is defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with study vaccine. An AE can therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the study vaccine or protocol-specified procedure is also an AE. Solicited injection-site AEs such as erythema, swelling, pain, and induration at the injection site will be recorded.

  5. Stage I: Percentage of Participants Who Report at Least 1 Solicited Systemic AE

    Time frame: Day 1 through Day 8 following any vaccination

    An AE is defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with study vaccine. An AE can therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the study vaccine or protocol-specified procedure is also an AE. Systemic AEs are those not categorized as injection-site AEs.

  6. Stage I: Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)

    Time frame: Up to approximately 30 months

    An AE is defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with study vaccine. An AE can therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the study vaccine or protocol-specified procedure is also an AE. An SAE is an AE that results in death, is life threatening, results in a persistent or significant disability or incapacity, results in or prolongs an existing hospitalization, is a congenital anomaly or birth defect, or is another important medical event.

  7. Stages I and II: Combined Incidence of HPV 6-, 11-, 16-, 18-, 31-, 33-, 45-, 52-, and 58-related Anal Intraepithelial Neoplasia (AIN) or Anal Cancer (MSM participants only)

    Time frame: Up to approximately 78 months

    This endpoint is defined to have occurred if on a single biopsy or excised tissue from a participant, there is: (a) a pathology panel consensus diagnosis of AIN of any grade or anal cancer; and (b) detection of at least 1 of HPV types 6, 11, 16, 18, 31, 33, 45, 52 or 58 by Thinsection PCR in an adjacent section from the same tissue block.

  8. Stages I and II: Percentage of Participants Who Experience at Least 1 SAE

    Time frame: Up to approximately 78 months

    An AE is defined as any untoward medical occurrence in a participant which does not necessarily have a causal relationship with study vaccine. An AE can therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of study vaccine or a protocol-specified procedure, whether or not considered related to the study vaccine or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the study vaccine or protocol-specified procedure is also an AE. An SAE is an AE that results in death, is life threatening, results in a persistent or significant disability or incapacity, results in or prolongs an existing hospitalization, is a congenital anomaly or birth defect, or is another important medical event.

Sponsors and collaborators

Lead sponsor

Merck Sharp & Dohme LLC

Industry

Registry information

Official study title

A Phase 3 Randomized, Double-Blind, Placebo-Controlled Clinical Study to Evaluate the Efficacy, Immunogenicity, and Safety of V503, a 9-Valent Human Papillomavirus (HPV) Vaccine, in Chinese Males 20 to 45 Years of Age

Important dates

Study start
2022
Primary completion
2029
Study completion
2029
First posted
Mar 18, 2022
Registry last updated
Dec 16, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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