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CX-2051

Phase 1

Solid Tumor, Adult | Small molecule | Oncology |CytomX Therapeutics, Inc.|Last Updated: May 19, 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
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment160
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06265688First In Human Study of CX-2051 in Advanced Solid TumorsPHASE1 RECRUITING 160Apr 2, 2024Mar 31, 2029May 19, 20267 United States
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Study Endpoints
Primary Endpoints
Safety and tolerability of CX-2051
44 months

The number of participants experiencing a dose-limiting toxicity (DLT) as defined in the protocol, AEs (adverse events), and treatment-emergent adverse events (TEAEs) at any dose level

Determine the recommended Phase 2 dose (RP2D)
44 months

The number of participants experiencing a dose-limiting toxicity (DLT) as defined in the protocol, AEs (adverse events), and treatment-emergent adverse events (TEAEs) at any dose level

Secondary Endpoints
Objective response rate (ORR)
60 months
Duration of response (DOR)
60 months
Progression-free survival (PFS)
60 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
CX-2051EXPERIMENTAL -
CX-2051 + bevacizumabEXPERIMENTAL -
Interventions
NameTypeDescription
CX-2051DRUGInvestigational drug
BevacizumabDRUGIV infusion
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: * Metastatic or locally advanced unresectable solid tumor that has progressed after standard therapy * Eastern Cooperative Oncology Group (ECOG) performance status of 0-1 * Measurable disease per RECIST v1.1 * Consent to fresh biopsy or if medically contraindicated, recent (with...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06265688primaryCompletionDate: changed
LOWMay 24, 2026NCT06265688studyFirstPostDate: changed