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REGN10597

Phase 1

Melanoma | Small molecule | Oncology |Regeneron Pharmaceuticals, Inc.|Last Updated: Apr 28, 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
CONTROLLEDBiomarker
Total Trials1
Total Enrollment240
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06413680A First-In Human (FIH) Study to Find Out How Well REGN10597 Medicine Given Alone or in Combination With Cemiplimab Works in Adult Participants Who Have Cancer With Tumors That Have Spread in Their BodyPHASE1 RECRUITING 240Sep 23, 2024Feb 3, 2030Apr 28, 202611 United States
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Study Endpoints
Primary Endpoints
Incidence of Dose-Limiting Toxicities (DLTs)
Up to Day 29

Dose escalation

Incidence of Treatment-Emergent Adverse Event (TEAEs)
Approximately 6 Years

Dose escalation

Incidence of Serious Adverse Events (SAEs)
Approximately 6 Years

Dose escalation

Incidence of TEAEs leading to treatment discontinuation
Approximately 6 Years

Dose escalation

Incidence of TEAEs leading to death
Approximately 6 Years

Dose escalation

Number of participants with Grade 3 laboratory abnormalities
Approximately 6 Years

Dose escalation Grade 3 or higher per Common Terminology Criteria for Adverse Events (CTCAE) version 5.0

Objective Response Rate (ORR) per Response Evaluation Criteria In Solid Tumors (RECIST 1.1) criteria by investigator assessment
Approximately 6 Years

Dose expansion

Secondary Endpoints
ORR based on RECIST 1.1 criteria by investigator assessment
Approximately 6 Years
Best Overall Response (BOR) based on RECIST 1.1 criteria
Approximately 6 Years
Duration Of Response (DOR) based on RECIST 1.1 criteria
Approximately 6 Years
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Phase 1: Monotherapy Dose EscalationEXPERIMENTALMultiple Dose Level (DL) Cohorts to identify the Recommended Phase 2 Dose (RP2D)
Phase 2: Monotherapy Dose ExpansionEXPERIMENTALCohort 1: Melanoma participants Cohort 2: Clear-cell Renal-Cell Carcinoma (ccRCC) participants
Phase 1: Combination Dose EscalationEXPERIMENTALMultiple DL Cohorts to identify the RP2D
Phase 2: Combination Dose ExpansionEXPERIMENTALCohort 1: Melanoma participants
Interventions
NameTypeDescription
REGN10597DRUGAdministered per the protocol
CemiplimabDRUGAdministered per the protocol
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites11

Key Inclusion Criteria: Dose escalation cohorts: 1\. Histologically or cytologically confirmed diagnosis of solid malignancy (locally advanced or metastatic) with confirmed progression on standard-of-care therapy. Participants are required to submit archival tissue if it is available Dose expansi...

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 26, 2026NCT06413680primaryCompletionDate: changed
LOWMay 24, 2026NCT06413680studyFirstPostDate: changed