Recent Updates
Recently added Catalysts

favezelimab/pembrolizumab

Phase 3

Colorectal Cancer | Monoclonal antibody | Oncology |Merck & Company, Inc.|Last Updated: May 26, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment535
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05600309A Study of Coformulated Favezelimab/Pembrolizumab (MK-4280A) Versus Standard of Care in Subjects With Previously Treated Metastatic PD-L1 Positive Colorectal Cancer (MK-4280A-007)-China Extension StudyPHASE3 COMPLETED 94Jun 14, 2022Feb 21, 2025Nov 26, 202524 China
NCT05064059A Study of Coformulated Favezelimab/Pembrolizumab (MK-4280A) Versus Standard of Care in Subjects With Previously Treated Metastatic PD-L1 Positive Colorectal Cancer (MK-4280A-007)PHASE3 COMPLETED 441Nov 10, 2021Feb 21, 2025May 26, 2026152 United States, Australia +19
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Overall Survival (OS)
Up to approximately 26 months

OS was defined as the time from randomization to death due to any cause.

Secondary Endpoints
Progression-Free Survival (PFS) According Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review (BICR)
Up to approximately 26 months
Objective Response Rate (ORR) Per RECIST 1.1 as Assessed by BICR
Up to approximately 26 months
Duration of Response (DOR) Per RECIST 1.1 as Assessed by BICR
Up to approximately 26 months
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Favezelimab/PembrolizumabEXPERIMENTALParticipants will receive coformulated favezelimab/pembrolizumab (800 mg/200 mg) intravenously (IV) on Day 1, then every 3 weeks (Q3W), for up to 35 infusions.
Standard of Care (Regorafenib or TAS-102)ACTIVE_COMPARATORAt the Investigator's choice, participants will receive 160 mg regorafenib orally daily on Days 1-12 of each 28-day cycle or 35 mg/m\^2 TAS-102 orally twice daily on Days 1-5 and Days 8-12 of each 28-day cycle.
Interventions
NameTypeDescription
favezelimab/pembrolizumabBIOLOGICALCoformulated favezelimab/pembrolizumab (800 mg/200 mg), IV infusion
regorafenibDRUGOral
TAS-102DRUGOral
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites24

Inclusion Criteria: * Has a histologically confirmed colorectal adenocarcinoma that is metastatic and unresectable. * Has measurable disease per RECIST 1.1 as assessed by the local site investigator. * Has been previously treated for the disease and radiographically progressed on or after or could ...

Countries:ChinaUnited StatesAustraliaCanadaChileCzechiaFranceGermanyIsraelItalyJapanMalaysiaNorwayRussiaSouth AfricaSouth KoreaSpainTaiwanTurkey (Türkiye)UkraineUnited Kingdom
Unlock Eligibility Criteria
Competitive Landscape -Colorectal Cancer 263 trials
CompanyTickerTrialsLead PhaseDrugs
AbbVie, Inc.ABBV8PHASE3Telisotuzumab Adizutecan, Telisotuzumab adizutecan, Bevacizumab, Trifluridine/Tipiracil, ABBV-400
Bristol-Myers Squibb CompanyBMY7PHASE3Ipilimumab, Oxaliplatin, Leucovorin, Fluorouracil, Irinotecan
Merck & Co., Inc.MRK6PHASE3Pembrolizumab, Oxaliplatin, Leucovorin, 5-fluorouracil, Irinotecan
Johnson & JohnsonJNJ5PHASE3Amivantamab, Cetuximab, 5-fluorouracil, Leucovorin calcium/Levoleucovorin, Oxaliplatin
Pfizer Inc.PFE12PHASE3PF-08634404, Bevacizumab, Chemotherapy, tucatinib, trastuzumab
GSK plc Sponsored ADRGSK6PHASE3Dostarlimab, CAPEOX, FOLFOX, GSK4418959, PD-1 inhibitor
Exelixis, Inc.EXEL5PHASE3XL092, Atezolizumab, Regorafenib, cabozantinib, atezolizumab
Summit Therapeutics IncSMMT3PHASE3Drug: Ivonescimab, Drug: Bevacizumab, AK112, AK117, Oxaliplatin
Natera, Inc.NTRA4PHASE3Capecitabine, Oxaliplatin, Folfirinox, FOLFOX regimen
Agenus Inc.AGEN4PHASE3Balstilimab, Botensilimab, CR6086, AGEN2034
Incyte CorporationINCY2PHASE3INCA33890, Bevacizumab, FOLFOX, Ruxolitinib, Capecitabine
Amgen Inc.AMGN1PHASE3FOLFIRI Regimen, Sotorasib, Panitumumab, Bevacizumab-awwb
Eli Lilly and CompanyLLY8PHASE2LY2157299, Capecitabine, Fluorouracil, LY4066434., Cetuximab
AstraZeneca PLCAZN8PHASE2Datopotamab deruxtecan, Capecitabine, 5-Fluorouracil, Volrustomig, Carboplatin
Takeda Pharmaceutical Co. Ltd. Sponsored ADRTAK5PHASE2fruquintinib, FOLFIRI, oxaliplatin , levofolinate calcium , 5-FU, panitumumab, mFOLFOX6 + panitumumab combination therapy
Novartis AG Sponsored ADRNVS7PHASE2Dabrafenib, Trametinib, JDQ443, TNO155, tislelizumab
BioNTech SE Sponsored ADRBNTX3PHASE2RO7198457, PM8002, Chemotherapy Regimen 1, BNT314, BNT327
Regeneron Pharmaceuticals, Inc.REGN2PHASE2Cemiplimab + Fianlimab, VV1, Cemiplimab
Revolution Medicines, Inc.RVMD7PHASE1RMC-6291, Elironrasib, Daraxonrasib, RMC-9805, RMC-6236
Veracyte, Inc.VCYT1PHASE3Tislelizumab
Unlock Competitive Intelligence