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Nivolumab and Relatlimab

Phase 1

Metastatic Melanoma | Small molecule | Oncology |Delcath Systems, Inc.|Last Updated: May 29, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment15
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07281924Hepzato Kit and Opdualag for Metastatic Melanoma and Liver MetastasisPHASE1 RECRUITING 15Jun 1, 2026Dec 1, 2030May 29, 20261 United States
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Study Endpoints
Primary Endpoints
Incidence and Severity of Dose Limiting Toxicities (DLTs)
up to 12 weeks

A DLT is defined as any grade 4+ non-hematologic event lasting greater than 3 days (despite appropriate medical management) considered possibly related to study treatment (HEPZATO KIT™ or Opdualag™) within 12 weeks of Cycle 1 Day 1.

Incidence of Treatment-Emergent Adverse Events
up to 2 years
Incidence of Serious Treatment-Emergent Adverse Events
up to 2 years
Number of Participants that Discontinue Treatment due to Adverse Events
up to 2 years
Overall Response Rate (ORR)
After treatment plus follow up for 2 years (up to 4 years)

The objective response rate is the proportion of all participants with confirmed Partial Response (PR) or Complete Response (CR) according to RECIST 1.1, from the start of treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the start of treatment).

Secondary Endpoints
ORR in Hepatic and Non-Hepatic Lesions
After treatment plus follow up for 2 years (up to 4 years)
Disease Control Rate (DCR)
After treatment plus follow up for 2 years (up to 4 years)
Progression Free Survival (PFS)
After treatment plus follow up for 2 years (up to 4 years)
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Participants with Metastatic MelanomaEXPERIMENTAL -
Interventions
NameTypeDescription
Nivolumab and RelatlimabDRUGRelatlimab is a human IgG4 LAG-3 blocking antibody. Nivolumab is a human IgG4 PD-1 blocking antibody. Nivolumab 480 mg and relatlimab 160 mg in a fixed-dose combination will be administered on Day 1 of each 28-day cycle that the participant is on treatment and will be given for up to 2 years from start of treatment.
MelphalanDEVICEThe recommended HEPZATO dose is 3 mg/kg based on ideal body weight (IBW), infusion every 6 to 8 weeks for up to 2 total infusions
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Histologically or cytologically confirmed metastatic melanoma with liver metastasis (LM). Liver biopsy positive for presence of melanoma metastases is required. * Systemic treatment naïve in the unresectable/metastatic setting - prior adjuvant anti-programmed cell death-1 (ant...

Countries:United States
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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 29, 2026NCT07281924startDate: changed
LOWMay 29, 2026NCT07281924startDate: changed
LOWMay 29, 2026NCT07281924startDate: changed
LOWMay 26, 2026NCT07281924primaryCompletionDate: changed
LOWMay 24, 2026NCT07281924studyFirstPostDate: changed