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mRNA-4157

Phase 2

Melanoma | Small molecule | Oncology |Moderna, Inc.|Last Updated: Dec 3, 2025

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
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment267
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03897881An Efficacy Study of Adjuvant Treatment With the Personalized Cancer Vaccine mRNA-4157 and Pembrolizumab in Participants With High-Risk Melanoma (KEYNOTE-942)PHASE2 ACTIVE NOT_RECRUITING 267Jul 18, 2019Nov 30, 2032Dec 3, 202523 United States, Australia
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Study Endpoints
Primary Endpoints
Recurrence-Free Survival (RFS), Assessed Using Radiological Imaging
Up to 7 years

RFS is defined as the time between the date of first dose of pembrolizumab and the date of recurrence (local, regional, or distant metastasis), new primary melanoma, or death (whatever the cause), whichever occurs first.

Secondary Endpoints
Distant Metastasis-Free Survival (DMFS), Assessed Using Radiological Imaging
Up to 7 years
Number of Participants With Adverse Events (AEs)
Baseline through 100 days after last mRNA-4157 dose or up to 90 days after the last dose of pembrolizumab, whichever is later (for mRNA-4157 and Pembrolizumab combination arm) and up to 90 days after last pembrolizumab dose (for Pembrolizumab only arm)
Number of Participants Who Discontinued Due to AEs
Baseline through 100 days after last mRNA-4157 dose or up to 90 days after the last dose of pembrolizumab, whichever is later (for mRNA-4157 and Pembrolizumab combination arm) and up to 90 days after last pembrolizumab dose (for Pembrolizumab only arm)
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
mRNA-4157 and PembrolizumabEXPERIMENTALParticipants will receive up to 9 doses of mRNA-4157 (every 21 days). Participants may continue on pembrolizumab (every 21 days) until disease recurrence, unacceptable toxicity, or they undergo up to 18 total cycles (approximately 1 year of treatment), whichever is sooner.
PembrolizumabACTIVE_COMPARATORParticipants will receive pembrolizumab (every 21 days) until disease recurrence, unacceptable toxicity, or they undergo up to 18 total cycles (approximately 1 year of treatment), whichever is sooner.
Interventions
NameTypeDescription
mRNA-4157DRUGIndividualized Neoantigen Therapy
PembrolizumabBIOLOGICALIntravenous infusion
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites23

Key Inclusion Criteria: * Resectable cutaneous melanoma metastatic to a lymph node and at high risk of recurrence * Complete resection within 13 weeks prior to the first dose of pembrolizumab * Disease free at study entry (after surgery) with no loco-regional relapse or distant metastasis and no cl...

Countries:United StatesAustralia
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Competitive Landscape -Melanoma 127 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK6PHASE3Intismeran autogene, Pembrolizumab, pembrolizumab, Pembrolizumab Berahyaluronidase alfa
Bristol-Myers Squibb CompanyBMY7PHASE3Nivolumab, Nivolumab + Relatlimab, rHuPH20, Relatlimab, relatlimab+nivolumab
Regeneron Pharmaceuticals, Inc.REGN8PHASE3Fianlimab, Cemiplimab, Pembrolizumab, fianlimab, cemiplimab
Pfizer Inc.PFE4PHASE3Encorafenib, Binimetinib, Pembrolizumab, PF-08046049, PF-07799933
IDEAYA Biosciences, Inc.IDYA4PHASE3Darovasertib, IDE196, Crizotinib, Pembrolizumab, Ipilimumab
Iovance Biotherapeutics IncIOVA6PHASE3Lifileucel plus Pembrolizumab, Pembrolizumab with Optional Crossover Period, Lifileucel, LN-145/LN-144, Cyclophosphamide
Replimune Group, Inc.REPL5PHASE3Vusolimogene Oderparepvec, Nivolumab, Pembrolizumab, Single-agent chemotherapy, RP1
Amgen Inc.AMGN1PHASE3ABP 206, Nivolumab
Immunocore Holdings Plc Shs Sponsored American Depositary Shares Repr 1 ShIMCR3PHASE3Tebentafusp, Brenetafusp, Nivolumab
Immatics N.V.IMTX2PHASE3IMA203, nivolumab plus relatlimab, lifileucel, pembrolizumab, ipilimumab
Aura Biosciences IncAURA4PHASE3Bel-sar
Novartis AG Sponsored ADRNVS6PHASE2LXH254, LTT462, Trametinib, Ribociclib, DYP688
IO Biotech, Inc.IOBT2PHASE3IO102-IO103, Pembrolizumab, Pembrolizumab KEYTRUDA
Erasca, Inc.ERAS1PHASE3Naporafenib, Dacarbazine, Temozolomide, Trametinib
AstraZeneca PLCAZN3PHASE2Ceralasertib, Durvalumab, AZD6750, rilvegostomig, Trastuzumab deruxtecan
Eikon Therapeutics, Inc.EIKN2PHASE2EIK1001, Pembrolizumab, Association atezolizumab + BDB001 + RT
Moderna, Inc.MRNA1PHASE2mRNA-4157, Pembrolizumab
Genmab A/S Sponsored ADRGMAB2PHASE2Acasunlimab, Pembrolizumab, GEN1042, Cisplatin, Carboplatin
Agenus Inc.AGEN1PHASE2Botensilimab, Balstilimab
ImmunityBio IncIBRX1PHASE2N-803 + Pembrolizumab
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT03897881primaryCompletionDate: changed
LOWMay 24, 2026NCT03897881studyFirstPostDate: changed