A Study to Evaluate the Safety, Tolerability, and Immunogenicity of V116 in Pneumococcal Vaccine-experienced Adults (V116-006, STRIDE-6)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05420961 |
Recruitment Status :
Active, not recruiting
First Posted : June 16, 2022
Last Update Posted : November 25, 2022
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Condition or disease | Intervention/treatment | Phase |
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Pneumonia, Pneumococcal | Biological: V116 Biological: PCV15 Biological: PPSV23 | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 700 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Masking Description: | Cohorts 1 and 2: participants, investigator, sponsor Cohort 3: no blinding |
Primary Purpose: | Prevention |
Official Title: | A Phase 3 Clinical Study to Evaluate the Safety, Tolerability, and Immunogenicity of V116 in Pneumococcal Vaccine-Experienced Adults 50 Years of Age or Older |
Actual Study Start Date : | July 12, 2022 |
Estimated Primary Completion Date : | May 18, 2023 |
Estimated Study Completion Date : | May 18, 2023 |
Arm | Intervention/treatment |
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Experimental: Cohort 1: V116
Participants will receive a single 0.5 mL intramuscular (IM) injection of V116 on Day 1. Participants in this arm received PPSV23 prior to the enrollment.
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Biological: V116
Pneumococcal 21-valent conjugate vaccine with 4 μg of each of the pneumococcal polysaccharides (PnPs) antigen: 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B in each 0.5 mL sterile solution
Other Name: Pneumococcal 21-valent Conjugate Vaccine |
Active Comparator: Cohort 1: PCV15
Participants will receive a single 0.5 mL IM injection of PCV15 on Day 1. Participants in this arm received PPSV23 prior to the enrollment.
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Biological: PCV15
Pneumococcal 15-valent conjugate vaccine with 2 μg of each of the PnPs antigen: 1, 3, 4, 5, 6A, 7F, 9V, 14, 18C, 19A, 19F, 22F, 23F, 33F, and 4 μg of 6B in each 0.5 mL sterile solution
Other Name: VAXNEUVANCE™ |
Experimental: Cohort 2: V116
Participants will receive a single 0.5 mL IM injection of V116 on Day 1. Participants in this arm received PCV13 prior to the enrollment.
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Biological: V116
Pneumococcal 21-valent conjugate vaccine with 4 μg of each of the pneumococcal polysaccharides (PnPs) antigen: 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B in each 0.5 mL sterile solution
Other Name: Pneumococcal 21-valent Conjugate Vaccine |
Active Comparator: Cohort 2: PPSV23
Participants will receive a single 0.5 mL IM injection of PPSV23 on Day 1. Participants in this arm received PCV13 prior to the enrollment.
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Biological: PPSV23
Pneumococcal 23-valent vaccine with 25 μg of each of the PnPs antigen: 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F, and 33F in each 0.5 mL sterile solution
Other Name: PNEUMOVAX™23 |
Experimental: Cohort 3: V116
Participants will receive a single 0.5 mL IM injection of V116 on Day 1. Participants in this arm received PCV15, PCV20, PCV13+PPSV23, PCV15+PPSV23, or PPSV23+PCV13 prior to the enrollment.
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Biological: V116
Pneumococcal 21-valent conjugate vaccine with 4 μg of each of the pneumococcal polysaccharides (PnPs) antigen: 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B in each 0.5 mL sterile solution
Other Name: Pneumococcal 21-valent Conjugate Vaccine |
- Percentage of Participants with Solicited Injection-site Adverse Events (AEs) [ Time Frame: Up to 5 days post-vaccination ]An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The solicited injection-site AEs include tenderness/injection-site pain, injection-site redness/injection-site erythema, and injection-site swelling/injection-site swelling.
- Percentage of Participants with Solicited Systemic AEs [ Time Frame: Up to 5 days post-vaccination ]An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The solicited systemic AEs include muscle aches all over body/myalgia, headache, and tiredness/fatigue.
- Percentage of Participants with Vaccine-related Serious Adverse Events (SAEs) [ Time Frame: Up to ~180 days ]A serious adverse event (SAE) is any untoward medical occurrence that, at any dose, results in death, is life threatening, requires inpatient hospitalization or prolongs existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, or is another important medical event. SAEs that were reported to be at least possibly related by the investigator to study vaccination will be summarized.
- Geometric Mean Titer of Serotype-specific Opsonophagocytic Activity (OPA) Responses [ Time Frame: 30 Days post-vaccination ]Opsonophagocytic activity (OPA) for the serotypes in V116 will be determined using a multiplexed opsonophagocytic assay (MOPA).
- Geometric Mean Concentration (GMC) of Serotype-specific Immunoglobulin G (IgG) [ Time Frame: 30 Days post-vaccination ]The GMC of serotype-specific IgG for the serotypes contained in V116 (serotypes 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B) will be determined using an pneumococcal electrochemiluminescence (Pn ECL) assay.
- Geometric Mean Fold Rise (GMFR) of Serotype-specific OPA [ Time Frame: Day 1 (Baseline) and 30 days post-vaccination ]Activity for the serotypes contained in V116 (serotypes 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B) will be determined using a MOPA. GMFR is defined as the geometric mean of the ratio of concentration at Day 30 after vaccination divided by concentration at baseline.
- Geometric Mean Fold Rise (GMFR) of Serotype-specific IgG [ Time Frame: Baseline (Day 1) and 30 days post-vaccination ]Activity for the serotypes contained in V116 (serotypes 3, 6A, 7F, 8, 9N, 10A, 11A, 12F, 15A, 15C, 16F, 17F, 19A, 20, 22F, 23A, 23B, 24F, 31, 33F, and 35B) will be determined using an Pn ECL assay. GMFR is defined as the geometric mean of the ratio of concentration at Day 30 after vaccination divided by concentration at baseline.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 50 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Has received pneumococcal vaccine >= 1 year before enrollment (PCV13, PCV15, PCV20, PPSV23, PCV13+PPSV23, PPSV23+PCV13, or PCV15+PPSV23).
Exclusion Criteria:
- Has a history of invasive pneumococcal disease (IPD).
- Has a known hypersensitivity to any component of V116, PCV15, PCV20, or PPSV23, including diphtheria toxoid.
- Has a known or suspected impairment of immunological function including, but not limited to, a history of congenital or acquired immunodeficiency, documented human immunodeficiency virus (HIV) infection, functional or anatomic asplenia, or history of autoimmune disease.
- Has a coagulation disorder contraindicating intramuscular vaccination.
- Has a known malignancy that is progressing or has required active treatment.
- Has received PPSV23 followed by either PCV15 or PCV20.
- Received systemic corticosteroids (prednisone equivalent of ≥20 mg/day).
- Is currently receiving immunosuppressive therapy, including chemotherapeutic agents or other immunotherapies/immunomodulators used to treat cancer or other conditions, and interventions associated with organ or bone marrow transplantation, or autoimmune disease.
- Has received any non-live vaccine ≤14 days before receipt of study vaccine or is scheduled to receive any non-live vaccine ≤30 days after receipt of any study vaccine.
- Has received any live virus vaccine ≤30 days before receipt of study vaccine or is scheduled to receive any live virus vaccine ≤30 days after receipt of study vaccine.
- Has received a blood transfusion or blood products, including immunoglobulin ≤6 months before receipt of study vaccine or is scheduled to receive a blood transfusion or blood product until the Day 30 post-vaccination blood draw is complete.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05420961

Study Director: | Medical Director | Merck Sharp & Dohme LLC |
Responsible Party: | Merck Sharp & Dohme LLC |
ClinicalTrials.gov Identifier: | NCT05420961 |
Other Study ID Numbers: |
V116-006 jRCT2071220025 ( Registry Identifier: jRCT ) 2021-006679-41 ( EudraCT Number ) |
First Posted: | June 16, 2022 Key Record Dates |
Last Update Posted: | November 25, 2022 |
Last Verified: | November 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf |
URL: | http://engagezone.msd.com/ds_documentation.php |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Pneumonia, Pneumococcal Pneumonia Respiratory Tract Infections Infections Lung Diseases Respiratory Tract Diseases Pneumococcal Infections Streptococcal Infections |
Gram-Positive Bacterial Infections Bacterial Infections Bacterial Infections and Mycoses Pneumonia, Bacterial Heptavalent Pneumococcal Conjugate Vaccine Immunologic Factors Physiological Effects of Drugs |