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Papillomavirus InfectionsPhase 3NCT05285826

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

A Phase 3 study testing 9vHPV Vaccine in people with Papillomavirus Infections, run by Merck Sharp & Dohme LLC at 34 sites in China.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

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. Read more about this study

Who is it for?
Ages 20 to 45 years, men onlyHealthy volunteers can take part
Conditions the study is for
Papillomavirus Infections
What is being tested?
9vHPV Vaccine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
8,100 participants
Where
34 sitesChina
Study dates
18 Feb 2022to 25 May 2029
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 20 to 45 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

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

Who cannot join

  • 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.

Trial locations and contacts

34 sites in 1 country.

34 sites in 1 country

China34 sites
  • Beijing Youan Hospital ( Site 0001)

    Beijing, Beijing Municipality, 100069

  • Hunan Provincial Center for Disease Control and Prevention ( Site 0040)

    Changsha, Hunan, 410005

  • The Third Xiangya Hospital of Central South University ( Site 0033)

    Changsha, Hunan, 410013

  • The Second Affiliated Hospital Chongqing Medical University ( Site 0052)

    Chongqing, Chongqing Municipality, 400010

  • Chongqing Public Health Medical Center ( Site 0003)

    Chongqing, Chongqing Municipality, 400036

  • Binchuan County Center for Disease Control and Prevention ( Site 0022)

    Dali, Yunnan, 671600

  • Xiangyun County Center for Disease Control and Prevention ( Site 0021)

    Dali, Yunnan, 672100

  • Dazhu Disease Prevention and Control Center ( Site 0010)

    Dazhou, Sichuan, 635100

  • Yuechi Disease Prevention and Control Center ( Site 0009)

    Guang’an, Sichuan, 638399

  • Southern Medical University Nanfang Hospital-Center for Drug Clinical Research ( Site 0031)

    Guangzhou, Guangdong, 510515

  • First Affiliated Hospital of Kunming Medical University ( Site 0051)

    Kunming, Yunnan, 650032

  • Yunnan Provincial Infectious Disease Hospital ( Site 0042)

    Kunming, Yunnan, 650111

  • The First Hospital of Lanzhou University ( Site 0034)

    Lanzhou, Gansu, 730000

  • Center for Disease Control and Prevention of Rong An ( Site 0046)

    Liuzhou, Guangxi, 545400

  • Liucheng County Centers for Disease Control and Prevention ( Site 0045)

    Liuzhou, Guangxi

  • Loudi Disease Prevention and Control Center Zhiyebing Prevention And Treatment Hospital ( Site 0015)

    Louxing District, Hunan, 417000

  • Mianyang Center for Disease Control and Prevention ( Site 0007)

    Mianyang, Sichuan, 621000

  • Santai County Center for Disease Control and Prevention ( Site 0008)

    Mianyang, Sichuan, 621100

  • The Second Hospital of Nanjing (Tangshan Branch) ( Site 0028)

    Nanjing, Jiangsu, 2100003

  • Neijiang Center for Disease Control and Prevention ( Site 0011)

    Neijiang, Sichuan, 641000

  • The first affiliated hospital of China medical university ( Site 0041)

    Shenyang, Liaoning, 110001

  • Liaoning University of Traditional Chinese Medicine Affiliated Hospital ( Site 0048)

    Shenyang, Liaoning, 110031

  • The University of Hong Kong - Shenzhen Hospital ( Site 0049)

    Shenzhen, Guangdong, 518053

  • Tianjin Second People's Hospital ( Site 0004)

    Tianjin, Tianjin Municipality, 300192

  • Tianjin People' s Hospital ( Site 0038)

    Tianjin, Tianjin Municipality

  • Zhejiang University School of Medicine - Affiliated Wenzhou Traditional Chinese Medicine Hospital (W

    Wenzhou, Zhejiang, 325000

  • Wuhan Union Hospital ( Site 0032)

    Wuhan, Hubei, 430022

  • Xiangtan Disease Prevention and Control Center ( Site 0030)

    Xiangtan, Hunan

  • Xiangxiang Disease Prevention and Control Center ( Site 0016)

    Xiangxiang, Hunan

  • Qiyang Center for Disease Control and Prevention ( Site 0014)

    Yongzhou, Hunan, 426100

  • Yuanqu Center for Disease Control and Prevention ( Site 0019)

    Yuncheng, Shanxi, 043700

  • Yanhu Center for Disease Control and Prevention of Yuncheng ( Site 0018)

    Yuncheng, Shanxi, 044000

  • Yongji Center for Disease Control and Prevention ( Site 0026)

    Yuncheng, Shanxi, 044599

  • Ruicheng Center for Disease Control and Prevention ( Site 0025)

    Yuncheng, Shanxi, 044600

Other trials in China

About this study

Official 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

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.

Being tested
9vHPV Vaccine, Placebo
Medical subject headings
Papillomavirus Infections

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 9vHPV VaccineBiological

    Also called V503

    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

  • PlaceboOther

    Sterile saline solution administered as a 0.5 mL IM injection

Study groups in NCT05285826
Study groupRoleWhat they receive
V503ExperimentalParticipants will receive a single 0.5 mL intramuscular (IM) injection of V503 at Day 1, Month 2, and Month 6.
Receives: Biological: 9vHPV Vaccine
PlaceboPlacebo comparatorParticipants will receive a single 0.5 mL IM injection of placebo at Day 1, Month 2, and Month 6.
Receives: Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  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

    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.

    Measured: Up to approximately 30 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

    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.

    Measured: Up to approximately 78 months

Secondary outcomes (8)
  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

    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.

    Measured: Up to approximately 30 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

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

    Measured: Month 7

  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

    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.

    Measured: Month 7

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

    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.

    Measured: Day 1 through Day 8 following any vaccination

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

    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.

    Measured: Day 1 through Day 8 following any vaccination

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

    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.

    Measured: Up to approximately 30 months

  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)

    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.

    Measured: Up to approximately 78 months

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

    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.

    Measured: Up to approximately 78 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Mar 2022
  2. Study start18 Feb 2022
  3. Primary completion25 May 2029 (estimated)
  4. Study completion25 May 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
8,100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05285826
Sponsor's protocol ID
V503-052
Status last verified
Dec 2024
First submitted
8 Mar 2022
Last updated
16 Dec 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing 9vHPV Vaccine in people with Papillomavirus Infections, run by Merck Sharp & Dohme LLC at 34 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 16 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 34 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

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). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Dec 2024.

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