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IO102-IO103

Phase 3

Metastatic Melanoma | Small molecule | Oncology |IO Biotech, Inc.|Last Updated: Aug 28, 2025

Success Probability
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Trial Design
RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment407
FDA Designations
BREAKTHROUGH_THERAPY
Clinical trial landscape

IO102-IO103 · 2 trials · 4 indications

Phase 3 1Phase 2 1
NCT05155254IO102-IO103 in Combination With Pembrolizumab Versus Pembrolizumab Alone in Advanced Melanoma (IOB-013 / KN-D18)Metastatic Melanoma
ACTIVE NOT_RECRUITING407 Analytics
PHASE3ACTIVE NOT_RECRUITING
IO102-IO103 in Combination With Pembrolizumab Versus Pembrolizumab Alone in Advanced Melanoma (IOB-013 / KN-D18)
Metastatic MelanomaUnlock trial analytics
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.

Major pathologic response
Observed in the resected tumor tissue after neoadjuvant treatment at surgery

Major pathologic response, defined as pathologic complete response (pCR) (0% residual viable tumor) or near pCR (≤10% residual viable tumor)

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).
Cohort A - MelanomaEXPERIMENTALCutaneous resectable Stage III melanoma. Neoadjuvant Treatment (3 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W. Post-surgery Treatment (15 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W.
Cohort B - SCCHNEXPERIMENTALStage III or IVA resectable locoregionally advanced Squamous cell carcinoma of the head and neck (SCCHN) of the oral cavity, oropharynx (HPV-negative), hypopharynx, or larynx Neoadjuvant Treatment (2-3 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W Post-surgery Treatment (15 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W.
Cohort CEXPERIMENTALCutaneous resectable Stage III melanoma. Neoadjuvant Treatment (3 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W (Arm A) versus intravenous Pembrolizumab KEYTRUDA® 200mg Q3W alone (Arm B) Post-surgery Treatment (15 cycles): Subcutaneous IO102-IO103 (IO102 85 μg and IO103 85 μg) and intravenous Pembrolizumab KEYTRUDA® 200mg Q3W (Arm A) versus Pembrolizumab KEYTRUDA® 200mg Q3W alone (Arm B)
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
Pembrolizumab KEYTRUDA®DRUGPembrolizumab KEYTRUDA® administered intravenously
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Eligibility Criteria
Age Range18 Years to 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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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05280314primaryCompletionDate: changed
LOWMay 26, 2026NCT05155254primaryCompletionDate: changed
LOWMay 24, 2026NCT05280314studyFirstPostDate: changed
LOWMay 24, 2026NCT05155254studyFirstPostDate: changed