A Study of mRNA-1608, a Herpes Simplex Virus -2 (HSV-2) Therapeutic Candidate Vaccine, in Healthy Adults 18 to 55 Years of Age With Recurrent HSV-2 Genital Herpes

NCT ID: NCT06033261

Last Updated: 2025-05-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1/PHASE2

Total Enrollment

365 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-06

Study Completion Date

2025-04-25

Brief Summary

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The purpose of this study is to generate safety and immunogenicity data and establish a proof-of-concept of clinical benefit of the mRNA-1608 vaccine candidate.

Detailed Description

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Participants with a history of recurrent genital herpes will be randomly assigned in a 1:1:1:1 ratio to receive mRNA-1608 at 1 of the 3 dose levels or control (BEXSERO) administered as 2 doses at 0 and 2 months (Day 1 and Day 57).

Conditions

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Genital Herpes

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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mRNA-1608 Dose A

Participants will receive 2 intramuscular (IM) injections of mRNA-1608 at Dose Level A, each dose administered at 0 and 2 months (Day 1 and Day 57).

Group Type EXPERIMENTAL

mRNA-1608

Intervention Type BIOLOGICAL

Sterile liquid for injection

mRNA-1608 Dose B

Participants will receive 2 IM injections of mRNA-1608 at Dose Level B, each dose administered at 0 and 2 months (Day 1 and Day 57).

Group Type EXPERIMENTAL

mRNA-1608

Intervention Type BIOLOGICAL

Sterile liquid for injection

mRNA-1608 Dose C

Participants will receive 2 IM injections of mRNA-1608 at Dose Level C, each dose administered at 0 and 2 months (Day 1 and Day 57).

Group Type EXPERIMENTAL

mRNA-1608

Intervention Type BIOLOGICAL

Sterile liquid for injection

BEXSERO

Participants will receive 2 IM injections of BEXSERO, each dose administered at 0 and 2 months (Day 1 and Day 57).

Group Type OTHER

BEXSERO

Intervention Type BIOLOGICAL

A vaccine indicated for active immunization to prevent invasive disease caused by Neisseria meningitidis serogroup B.

Interventions

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mRNA-1608

Sterile liquid for injection

Intervention Type BIOLOGICAL

BEXSERO

A vaccine indicated for active immunization to prevent invasive disease caused by Neisseria meningitidis serogroup B.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Participant has a diagnosis of genital HSV-2 infection for at least 1 year before the Screening Visit.
* Seropositive for HSV-2 as determined by Western Blot.
* Participant has a history of recurrent genital herpes defined as at least 3 and no more than 9 reported genital herpes recurrences in the 12 months preceding the Screening Visit, or if currently on suppressive therapy, prior to initiation of suppressive therapy.
* Willing to refrain from taking suppressive antiviral therapy from the Screening Visit until the end of the study.
* Willing to refrain from the use of episodic antiviral therapy during the three 28-day anogenital swabbing periods. Episodic therapy may be used outside the three 28-day swabbing periods.
* For female participants of childbearing potential: negative pregnancy test, adequate contraception, and not currently breastfeeding.

Exclusion Criteria

* Prior immunization with a vaccine containing HSV antigens.
* History of any form of ocular HSV infection, HSV-related erythema multiforme, or HSV-related neurological complications.
* History of genital HSV-1 infection.
* History of hepatitis B, hepatitis C, or human immunodeficiency virus (HIV) types 1 or 2 (HIV-1, HIV-2).
* Reported history of anaphylaxis or severe hypersensitivity reaction after receipt of any mRNA vaccine(s) or any components of the mRNA vaccines.
* Previously received BEXSERO or other vaccine to prevent serogroup B meningococcal disease (also known as meningitis B).
* History of allergic disease or reactions likely to be exacerbated by any component of BEXSERO vaccine.
* Has received or plans to receive any licensed or authorized vaccine, including COVID-19 vaccines, ≤ 28 days prior to the first study injection (Day 1), or plans to receive a licensed or authorized vaccine within 28 days before or after study injection with the exception of licensed influenza vaccines, which may be received more than 14 days before or after any study injection.
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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ModernaTX, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Accel Clinical Sites Network - Cahaba Medical Care

Birmingham, Alabama, United States

Site Status

Noble Clinical Research

Tucson, Arizona, United States

Site Status

Cedars-Sinai Medical Center/Carbon Health

Beverly Hills, California, United States

Site Status

Acclaim Clinical Research

San Diego, California, United States

Site Status

Multi-Specialty Research Associates, Inc.

Lake City, Florida, United States

Site Status

Suncoast Research Associates, LLC

Miami, Florida, United States

Site Status

Johnson County Clin-Trials (JCCT)

Lenexa, Kansas, United States

Site Status

Alliance for Multispecialty Research, LLC

Newton, Kansas, United States

Site Status

Research Works

New Orleans, Louisiana, United States

Site Status

Fenway Health

Boston, Massachusetts, United States

Site Status

DM Clinical Research

Southfield, Michigan, United States

Site Status

Velocity Clinical Research

Grand Island, Nebraska, United States

Site Status

Velocity Clinical Research

Norfolk, Nebraska, United States

Site Status

Rochester Clinical Research

Rochester, New York, United States

Site Status

M3 Wake Research, Inc.

Raleigh, North Carolina, United States

Site Status

Velocity Clinical Research Cleveland

Beachwood, Ohio, United States

Site Status

Velocity Clinical Research, Austin

Cedar Park, Texas, United States

Site Status

Helios CR, Inc Fort Worth

Fort Worth, Texas, United States

Site Status

DM Clinical Research

Houston, Texas, United States

Site Status

Sun Research Institute

San Antonio, Texas, United States

Site Status

DM Clinical Research

Tomball, Texas, United States

Site Status

Health Research of Hampton Roads

Newport News, Virginia, United States

Site Status

University of Washington Virology Research Clinic

Seattle, Washington, United States

Site Status

Countries

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United States

Other Identifiers

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mRNA-1608-P101

Identifier Type: -

Identifier Source: org_study_id

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