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mRNA-1189

Phase 1

Epstein-Barr Virus Infection | Monoclonal antibody | Other |Moderna, Inc.|Last Updated: May 6, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment867
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05164094A Study of an Epstein-Barr Virus (EBV) Candidate Vaccine, mRNA-1189, in 10- to 30-Year-Old Healthy Adolescents and AdultsPHASE1 ACTIVE NOT_RECRUITING 867Dec 28, 2021Aug 18, 2027May 6, 202665 United States
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Study Endpoints
Primary Endpoints
Number of Participants with Solicited Local and Systemic Reactogenicity Adverse Reactions (ARs)
Up to Day 176 (7-day follow-up after vaccination)
Number of Participants with Unsolicited Adverse Events (AEs)
Up to Day 197 (28-day follow-up after vaccination)
Number of Participants with SAEs, MAAEs, Any AEs Leading to Withdrawal From Study/Discontinuation of Study Vaccine and AEs of Special Interest (AESIs)
Day 1 to end of study (EOS) (Day 505)
Number of Participants with Laboratory Abnormalities
Up to Day 176 (7-day follow-up after vaccination)
Secondary Endpoints
Geometric Mean Titer (GMT) of B-Cell Neutralizing Antibody (nAb)
Days 1, 85, and 197
Geometric Mean Concentration (GMC) of Antigen-specific Binding Antibody (bAb)
Days 1, 85, and 197
Geometric Mean Fold Rise (GMFR) of B-Cell nAb and Antigen-specific bAb
Days 1, 85, and 197
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Part A: mRNA-1189 Dose Level 2EXPERIMENTALParticipants will receive 3 intramuscular (IM) injections of mRNA-1189 at Dose Level 2 on Days 1, 57, and 169.
Part A: mRNA-1189 Dose Level 3EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 3 on Days 1, 57, and 169.
Part A: mRNA-1189 Dose Level 4EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 4 on Days 1, 57, and 169.
Part A: PlaceboPLACEBO_COMPARATORParticipants will receive 3 IM injection of study drug-matching placebo on Days 1, 57, and 169.
Part B: mRNA-1189 Dose Level 1EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 1 on Days 1, 57, and 169.
Part B: mRNA-1189 Dose Level 2EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 2 on Days 1, 57, and 169.
Part B: mRNA-1189 Dose Level 3EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 3 on Days 1, 57, and 169.
Part B: mRNA-1189 Dose Level 4EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 4 on Days 1, 57, and 169.
Part B: PlaceboPLACEBO_COMPARATORParticipants will receive 3 IM injection of study drug-matching placebo on Days 1, 57, and 169.
Part C: mRNA-1189 Dose Level 1EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 1 on Days 1, 57, and 169.
Part C: mRNA-1189 Dose Level 2EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 2 on Days 1, 57, and 169.
Part C: mRNA-1189 Dose Level 3EXPERIMENTALParticipants will receive 3 IM injections of mRNA-1189 at Dose Level 3 on Days 1, 57, and 169.
Part C: PlaceboPLACEBO_COMPARATORParticipants will receive 3 IM injection of study drug-matching placebo on Days 1, 57, and 169.
Interventions
NameTypeDescription
mRNA-1189BIOLOGICALSterile liquid for injection
PlaceboBIOLOGICAL0.9% sodium chloride (normal saline) injection
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Eligibility Criteria
Age Range10 Years — 30 Years
SexALL
Healthy VolunteersYes
Study Sites65

Inclusion Criteria: * According to the assessment of the investigator, is in good general health and can comply with study procedures. Part A: Healthy adult from 18 to 30 years of age (inclusive) at the time of consent (Screening Visit, Day 0). Part B: Healthy baseline EBV-seronegative adolescen...

Countries:United States
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT05164094primaryCompletionDate: changed
LOWMay 24, 2026NCT05164094studyFirstPostDate: changed