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NCT Number: NCT07168915

A Study of V118E in Healthy Participants (V118E-003)

Researchers are looking for new vaccines to prevent illnesses caused by a type of bacteria called Streptococcus pneumoniae. There are many different types of Streptococcus pneumoniae bacteria, called serotypes. Vaccines contain small parts of certain serotypes. These parts will not cause an infection but help the body create antibodies (proteins) to fight the bacteria.

PREVNAR 20™ is a vaccine given to help to prevent disease from Streptococcus pneumoniae bacteria. Researchers designed a new vaccine, V118E, to help prevent disease from Streptococcus pneumoniae bacteria.

The goal of this study is to learn how safe V118 formulation E is in Healthy Adults and how well people tolerate it.

Recruiting

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Key information

Conditions

Age range

18 year–49 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Velocity Clinical Research, Hallandale Beach ( Site 0003), Hallandale, Florida, United States

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Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

The main inclusion criteria include but are not limited to the following:

  • Is in good health before randomization

Exclusion criteria

The main exclusion criteria include but are not limited to the following:

  • Has a history of invasive pneumococcal disease or known history of other culture-positive pneumococcal disease within 3 years prior to receiving study vaccination
  • Has a history of clinically significant endocrine, gastrointestinal (GI), cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or diseases

Treatment and study plan

V118E

Biological

IM administration

Other names: V118/VA-017

PREVNAR 20™

Biological

IM administration

Saline

Biological

IM administration

Primary outcomes

  1. Number of Participants With Solicited Injection-Site Adverse Events (AEs)

    Time frame: Up to approximately 7 days after each vaccination

    An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, which occurs during the course of the study. A solicited AE is a predefined event that participants are specifically asked about and record on their vaccine report card (VRC). Solicited injection-site AEs include redness, swelling, and pain or tenderness. The number of participants with a solicited injection-site AE will be reported.

  2. Number of Participants With Solicited Systemic AEs

    Time frame: Up to approximately 7 days after each vaccination

    An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, which occurs during the course of the study. A solicited AE is a predefined event that participants are specifically asked about and record on their VRC. Solicited systemic AEs include fever, muscle aches all over body, joint pain, headache, and tiredness. The number of participants with a solicited systemic AE will be reported.

  3. Number of Participants With Immediate AEs Following Vaccination

    Time frame: Up to approximately 30 minutes after each vaccination

    An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, which occurs during the course of the study. The number of participants with immediate AEs following vaccination will be reported.

  4. Number of Participants With Unsolicited AEs

    Time frame: Up to approximately 28 days after each vaccination

    An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, which occurs during the course of the study. An unsolicited AE is an event that is not solicited using a VRC and that is communicated by a participant. The number of participants who experience an unsolicited AE will be reported.

  5. Number of Participants With a Serious Adverse Event (SAE)

    Time frame: Up to approximately 12 months after final vaccination

    An SAE is defined as any untoward medical occurrence that at any dose, results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, or is a congenital anomaly/birth defect. The number of participants who experience an SAE will be reported.

  6. Number of Participants With a Medically Attended Adverse Event (MAAE)

    Time frame: Up to approximately 12 months after final vaccination

    A MAAE is defined as an adverse event in which medical attention is received during an unscheduled, non-routine outpatient visit, such as an emergency department visit, office visit, or an urgent care visit with any medical personnel for any reason. The number of participants who experience a MAAE will be reported.

  7. Number of Participants With an Adverse Events of Special Interest (AESI)

    Time frame: Up to approximately 12 months after final vaccination

    AESIs are selected serious and nonserious AEs which include but are not limited to: 1) Potential drug-induced liver injury (DILI) events defined as an elevated aspartate aminotransferase (AST) or alanine aminotransferase (ALT) laboratory value that is ≥3* the upper limit of normal (ULN) and an elevated total bilirubin laboratory value that is ≥2* the ULN and, at the same time, an alkaline phosphatase laboratory value that is <2* the ULN, as determined by way of protocol-specified laboratory testing or unscheduled laboratory testing. 2) an overdose of V118E. 3) Potential immune-mediated disease (pIMDs) defined as a subset of AEs that an established autoimmune disease(s) AND inflammatory and/or neurologic disorder(s), which might or might not have an autoimmune etiology. The number of participants who experience an AESI will be reported.

Secondary outcomes

  1. Serotype-specific Immunoglobulin G (IgG) Geometric Mean Concentrations (GMCs)

    Time frame: Day 28 Postvaccination 1

    The GMCs for serotype-specific IgG antibodies will be determined using pneumococcal electrochemiluminescence (Pn ECL) assay.

  2. Change From Baseline in Serotype-specific IgG GMCs

    Time frame: Baseline and Day 28 Postvaccination 1

    Change from baseline in GMCs for serotype-specific IgG antibodies will be determined using Pn ECL assay.

Study contacts

Contact information is provided by the study sponsor or research team.

Toll Free Number

CONTACT

[email protected]

1-888-577-8839

Sponsors and collaborators

Lead sponsor

Merck Sharp & Dohme LLC

Industry

Registry information

Official study title

A Randomized, Double-Blind Study to Evaluate the Safety, Tolerability, and Immunogenicity of V118 Formulation E in Healthy Adults

Important dates

Study start
2025
Primary completion
2027
Study completion
2027
First posted
Sep 11, 2025
Registry last updated
Jul 15, 2026

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

View the official ClinicalTrials.gov record (opens in a new tab)

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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