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V118E

Phase 1

Healthy | Monoclonal antibody | Other |Merck & Company, Inc.|Last Updated: Jul 15, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment126

FDA Designations

No designations recorded

Clinical trial landscape

V118E · 1 trial · 1 indication

Phase 1 1
NCT07168915A Study of V118E in Healthy Participants (V118E-003)Healthy
RECRUITING126 Analytics
PHASE1RECRUITING
A Study of V118E in Healthy Participants (V118E-003)
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Study Endpoints

Primary Endpoints

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

Number of Participants With Solicited Systemic AEs
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.

Number of Participants With Immediate AEs Following Vaccination
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.

Number of Participants With Unsolicited AEs
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.

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

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

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

Serotype-specific Immunoglobulin G (IgG) Geometric Mean Concentrations (GMCs)
Day 28 Postvaccination 1
Change From Baseline in Serotype-specific IgG GMCs
Baseline and Day 28 Postvaccination 1
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
V118EEXPERIMENTALParticipants receive intramuscular (IM) injection of V118E in a 2-dose regimen administered on Day 1 and Day 29.
PREVNAR 20™ + SalineACTIVE_COMPARATORParticipants receive one dose of IM injection of PREVNAR 20™ in a 2-dose regimen on Day 1 followed by one dose of saline on Day 29.

Interventions

NameTypeDescription
V118EBIOLOGICALIM administration
PREVNAR 20™BIOLOGICALIM administration
SalineBIOLOGICALIM administration
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Eligibility Criteria

Age Range18 Years to 49 Years
SexALL
Healthy VolunteersYes
Study Sites4

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...

Countries:United States
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Recent Changes (Last 90 Days)

LOWJul 15, 2026NCT07168915primaryCompletionDate: changed
LOWJul 15, 2026NCT07168915primaryCompletionDate: changed
LOWJun 29, 2026NCT07168915lastUpdatePostDate: changed
LOWJun 29, 2026NCT07168915lastUpdatePostDate: changed

Frequently asked questions about V118E

What is V118E?

V118E is an investigational monoclonal antibody being developed by Merck & Company, Inc. (MRK). It is currently in Phase 1 clinical development for use in healthy participants. The drug is being studied in a single active-controlled, double-blind, randomized trial in the United States.

What is V118E used for?

V118E is being studied for use in healthy participants. It is currently in Phase 1 clinical development, meaning it is being evaluated for safety and tolerability in a clinical trial setting. The drug is not yet approved for any medical condition.

Who makes V118E?

V118E is being developed by Merck & Company, Inc., a pharmaceutical company traded on the New York Stock Exchange under the ticker symbol MRK. The company is conducting a Phase 1 clinical trial of V118E in healthy participants in the United States.

What phase is V118E in?

V118E is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The drug is currently being studied in a Phase 1 trial that is recruiting participants in the United States.

What clinical trials is V118E in?

V118E is being studied in a Phase 1 clinical trial with the identifier NCT07168915, titled "A Study of V118E in Healthy Participants (V118E-003)". The trial is recruiting 126 healthy participants in the United States and is active, with a randomized, double-blind, active-controlled design.