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CX-2051

Phase 1

Solid Tumor, Adult | Small molecule | Oncology |CytomX Therapeutics, Inc.|Last Updated: Jul 15, 2026

Target and mechanism

Molecular targetEpCAM
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment160

FDA Designations

No designations recorded

Clinical trial landscape

CX-2051 · 1 trial · 1 indication

Phase 1 1
NCT06265688First In Human Study of CX-2051 in Advanced Solid TumorsSolid Tumor, Adult
RECRUITING160 Analytics
PHASE1RECRUITING
First In Human Study of CX-2051 in Advanced Solid Tumors
Solid Tumor, AdultUnlock trial analytics

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 to N/A
SexALL
Healthy VolunteersNo
Study Sites8

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)

LOWJul 15, 2026NCT06265688lastUpdatePostDate: changed
LOWJul 15, 2026NCT06265688lastUpdatePostDate: changed
LOWJun 25, 2026NCT06265688lastUpdatePostDate: changed
LOWJun 25, 2026NCT06265688lastUpdatePostDate: changed
LOWJun 25, 2026NCT06265688lastUpdatePostDate: changed

Frequently asked questions about CX-2051

What is CX-2051 used for?

CX-2051 is an investigational small molecule being developed for the treatment of solid tumors in adults. It is currently in Phase 1 clinical development and has not been approved by the FDA. The drug is being studied in a first-in-human trial for advanced solid tumors.

What does CX-2051 target?

CX-2051 targets EpCAM, a protein that is often overexpressed on the surface of many solid tumor cells. By targeting EpCAM, the drug aims to deliver its therapeutic effect specifically to cancer cells while potentially sparing normal tissues.

Who is developing CX-2051?

CX-2051 is being developed by CytomX Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol CTMX. The company is conducting clinical trials to evaluate the safety and efficacy of this investigational drug in patients with advanced solid tumors.

What phase is CX-2051 in?

CX-2051 is currently in Phase 1 clinical development. It is an investigational drug that has not yet been approved by regulatory authorities. The ongoing Phase 1 trial is designed to assess the safety, tolerability, and preliminary efficacy of the drug in patients with advanced solid tumors.

What clinical trials is CX-2051 in?

CX-2051 is being evaluated in a Phase 1 clinical trial with the identifier NCT06265688, titled "First In Human Study of CX-2051 in Advanced Solid Tumors." This trial is currently recruiting participants in the United States and aims to enroll approximately 160 patients with solid tumors.

Is CX-2051 the same as any other drug?

CX-2051 is a unique investigational drug candidate developed by CytomX Therapeutics. It is not known to be the same as any other approved or investigational drug. Its distinct mechanism of targeting EpCAM sets it apart from other cancer therapies currently in development.