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CGT4859

Phase 1

Intrahepatic Cholangiocarcinoma (Icc) | Small molecule | Oncology |Cogent Biosciences, Inc.|Last Updated: Apr 17, 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 Enrollment110
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06777316A Study of an FGFR2/3 Inhibitor (CGT4859) in Patients With Cholangiocarcinoma and Other Advanced Solid TumorsPHASE1 ACTIVE NOT_RECRUITING 110Jan 22, 2025Jun 1, 2027Apr 17, 202613 United States, Canada
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Study Endpoints
Primary Endpoints
Phase 1: Determine the maximum tolerated dose (MTD) and RP2D of CGT4859 - AEs
Approximately 12 months

Incidence, severity, and seriousness or treatment-emergent adverse events (AEs) leading to dose modification

Phase 1: Determine the maximum tolerated dose (MTD) and RP2D of CGT4859 - Laboratory results
Approximately 12 months

Clinically significant changes or abnormalities observed from baseline in laboratory results in chemistry, hematology, and coagulation parameters

Phase 1: Determine the maximum tolerated dose (MTD) and RP2D of CGT4859 - ECG results
Approximately 12 months

Clinically significant changes or abnormalities observed from baseline in electrocardiogram (ECG) parameters

Phase 2: Evaluate antitumor activity of CGT4859 - Objective Response Rate (ORR)
Approximately 8 months
Secondary Endpoints
Phase 1: Pharmacokinetics
Approximately 28 days
Phase 1: Evaluate antitumor activity of CGT4859 - Objective Response Rate (ORR)
Approximately 8 months
Phase 1 and Phase 2: Evaluate antitumor activity of CGT4859 - Disease Control Rate (DCR)
Approximately 8 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Phase 1: Dose EscalationEXPERIMENTALMultiple doses of CGT4859 for oral administration
Phase 2: Signal SeekingEXPERIMENTALOral dose of CGT4859 at the RP2D as determined in Phase 1
Interventions
NameTypeDescription
CGT4859DRUGCGT4859 is a selective FGFR2/3 inhibitor
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites13

Key Inclusion Criteria: 1. Histologically confirmed locally advanced, metastatic, and/or unresectable iCCA or other solid tumor with documented FGFR2/3 alteration in blood and/or tumor. 2. Previously treated with, not appropriate for, or declined standard-of-care first-line treatment. 3. Have measu...

Countries:United StatesCanada
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06777316Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT06777316studyFirstPostDate: changed