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Brenetafusp

Phase 3

Advanced Melanoma | Small molecule | Oncology |Immunocore Holdings plc|Last Updated: Mar 6, 2026

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Trial Design
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment680
FDA Designations
No designations recorded
Clinical trial landscape

Brenetafusp · 2 trials · 2 indications

Phase 3 1Phase 1 1
NCT06112314IMC-F106C Regimen Versus Nivolumab Regimens in Previously Untreated Advanced Melanoma (PRISM-MEL-301)Advanced Melanoma
RECRUITING680 Analytics
PHASE3RECRUITING
IMC-F106C Regimen Versus Nivolumab Regimens in Previously Untreated Advanced Melanoma (PRISM-MEL-301)
Advanced MelanomaUnlock trial analytics
Study Endpoints
Primary Endpoints
Progression-Free Survival (PFS)
Up to ~45 months

PFS as assessed by blinded independent central review (BICR) according to Response Evaluation Criteria in Solid Tumours (RECIST 1.1).

Phase 1: Incidence of dose-limiting toxicity (DLT)s
Up to ~28 days after each dose
Phase 1: Incidence of adverse events (AE) and serious adverse events (SAE)
Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with dose interruptions, dose reductions, or dose discontinuations
Up to ~12 months
Phase 1: Number of participants with abnormal laboratory test results (hematology)
Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal laboratory test results (chemistry)
Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal laboratory test results (coagulation)
Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal urinalysis
Up to 30 days after the last dose of study therapy
Phase 1: Number of participants with abnormal vital signs
Up to 30 days after the last dose of study therapy
Phase 1: Mean change from baseline in QTcF interval
Up to 30 days after the last dose of study therapy
Phase 2: Best overall response (BOR)
Up to ~2 years
Secondary Endpoints
Overall Survival (OS)
Up to ~57 months
Overall Response Rate (ORR)
Up to ~45 months
Number of Participants Experiencing ≥1 Adverse Event (AE)
Up to ~57 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm A: Brenetafusp Low Dose + NivolumabEXPERIMENTALParticipants receive brenetafusp Low Dose once weekly (QW) for the first 13 weeks, then every 2 weeks (Q2W) through Week 51, and then every 4 weeks (Q4W). Nivolumab is given Q4W. Closed to randomization after dose recommendation by the IDMC in November 2025.
Arm B: Brenetafusp High Dose + NivolumabEXPERIMENTALParticipants receive brenetafusp High Dose once weekly (QW) for the first 13 weeks, then every 2 weeks (Q2W) through Week 51, and then every 4 weeks (Q4W). Nivolumab is given Q4W. Selected as go-forward experimental arm after dose recommendation by the IDMC in November 2025
Arm C: Nivolumab OR Nivolumab + RelatlimabACTIVE_COMPARATORParticipants receive nivolumab 480 mg monotherapy, or nivolumab 480 mg + relatlimab 160 mg, Q4W.
Brenetafusp MonotherapyEXPERIMENTALParticipants receive brenetafusp.
Brenetafusp and Anti-PD(L)1 AgentEXPERIMENTALParticipants receive brenetafusp and pembrolizumab.
Brenetafusp and ChemotherapyEXPERIMENTALParticipants receive brenetafusp and chemotherapy. Choice of chemotherapy is dependent on cohort.
Brenetafusp and Targeted TherapyEXPERIMENTALParticipants receive brenetafusp and a selected targeted therapy. Receipt of kinase inhibitor is dependent on histology.
Brenetafusp and Multimodal TherapyEXPERIMENTALParticipants receive brenetafusp, biologics (eg, pembrolizumab, bevacizumab) IV infusions and chemotherapy IV infusions based on histology.
Interventions
NameTypeDescription
BrenetafuspDRUGSoluble PRAME-specific T cell receptor with anti-CD3 scFV concentrate for solution for intravenous (IV) infusion at a unit dose of 0.2 mg/mL.
NivolumabDRUGConcentrate for solution for infusion at a unit dose of 10 mg/mL.
Nivolumab + RelatlimabDRUGConcentrate for solution for infusion at a unit dose of 16 mg/mL.
Brenetafusp and pembrolizumabDRUGBrenetafusp and pembrolizumab IV infusions
Brenetafusp and chemotherapyDRUGBrenetafusp and chemotherapy IV infusions
Brenetafusp and monoclonal antibodies and chemotherapyDRUGBrenetafusp and a monoclonal antibody therapy and chemotherapy
Brenetafusp and tebentafuspDRUGBrenetafusp and tebentafusp IV infusions
Brenetafusp and bevacizumabDRUGBrenetafusp and bevacizumab IV infusions
Brenetafusp and kinase inhibitorsDRUGBrenetafusp and oral kinase inhibitors
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Eligibility Criteria
Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites211

Inclusion Criteria: * Participants must be HLA-A\*02:01-positive * Participants must have histologically confirmed Stage IV or unresectable Stage III melanoma * Archived or fresh tumor tissue sample that must be confirmed as adequate * Participants must have measurable disease per RECIST 1.1 * Part...

Countries:United StatesArgentinaAustraliaAustriaBelgiumBrazilBulgariaCanadaCzechiaDenmarkFinlandFranceGermanyHungaryItalyLithuaniaMexicoNorwayPolandPortugalRomaniaSpainSwedenSwitzerlandTurkey (Türkiye)United KingdomIrelandNetherlandsNew ZealandSouth Korea
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06112314primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT04262466Phase: PHASE1/PHASE2 → PHASE1
LOWMay 24, 2026NCT06112314studyFirstPostDate: changed
LOWMay 24, 2026NCT04262466studyFirstPostDate: changed