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IO102-IO103

Phase 3

Metastatic Melanoma | Small molecule | Oncology |IO Biotech, Inc.|Last Updated: Aug 28, 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_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment407
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05155254IO102-IO103 in Combination With Pembrolizumab Versus Pembrolizumab Alone in Advanced Melanoma (IOB-013 / KN-D18)PHASE3 ACTIVE NOT_RECRUITING 407May 17, 2022Sep 1, 2027Aug 28, 2025112 United States, Australia +14
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Study Endpoints
Primary Endpoints
Progression Free Survival (PFS)
Approximately 3.5 years

PFS defined as the time from randomization to the first documented disease progression ((based on Independent Review Committee in accordance with RECIST v1.1) or death from any cause.

Secondary Endpoints
Overall Response Rate (ORR)
Approximately 2.5 years
Overall survival (OS)
Approximately 5.5 years
Durable Objective response rate (DRR)
Approximately 3.5 years
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
IO102-IO103 + pembrolizumabEXPERIMENTALIO102-IO103 subcutaneous injections (85µg) every 3 weeks for a maximum 35 cycles (up to 2 years treatment). Additional dose given during the induction period on Day 8 of cycles 1 and 2. Each patient can be treated for a maximum of 37 administrations in total (up to 2 years treatment). Pembrolizumab 200 mg intravenously every 3 weeks for a maximum of 35 cycles.
pembrolizumabACTIVE_COMPARATORPembrolizumab 200 mg intravenously every 3 weeks for a maximum of 35 cycles (up to 2 years treatment).
Interventions
NameTypeDescription
IO102-IO103DRUGIO102-IO103 comprises IDO peptide antigen (IO102) and PD-L1 peptide antigen (IO103) emulsified with adjuvant (Montanide ISA 51 VG) administered subcutaneously
PembrolizumabDRUGPembrolizumab administered intravenously
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites112

Inclusion Criteria: 1. Histologically or cytologically confirmed stage III (unresectable) or stage IV melanoma, as per American Joint Committee on Cancer 8th edition guidelines not amenable to local therapy 2. Patients are treatment naive, that is, no previous systemic anticancer therapy for unrese...

Countries:United StatesAustraliaBelgiumCzechiaDenmarkFranceGermanyHungaryIsraelItalyNetherlandsPolandSouth AfricaSpainTurkey (Türkiye)United Kingdom
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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, 2026NCT05155254primaryCompletionDate: changed
LOWMay 24, 2026NCT05155254studyFirstPostDate: changed