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FX-909

Phase 1

Advanced Urothelial Carcinoma | Small molecule | Oncology |Merck & Company, Inc.|Last Updated: Apr 20, 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
RandomizedCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment120
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05929235A Study of FX-909 in Patients With Advanced Solid Malignancies, Including Advanced Urothelial CarcinomaPHASE1 RECRUITING 120Aug 24, 2023Jan 30, 2028Apr 20, 202612 United States
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Study Endpoints
Primary Endpoints
To assess dose-limiting toxicities, the incidence and severity of adverse events and serious adverse events associated with FX-909 (Safety and Tolerability)
through study completion, an average of 3 years

Incidence of dose-limiting toxicities (DLTs); Incidence and severity of adverse events (AEs) and serious adverse events (SAEs)

Secondary Endpoints
To define the preliminary recommended phase 2 dose of FX-909, and/or maximum tolerated dose (MTD)
through study completion, an average of 3 years
To characterize the pharmacokinetic profile of FX-909 in patients with advanced solid malignancies
through study completion, an average of 3 years
To characterize the pharmacokinetic profile of FX 909 in patients with advanced solid malignancies
through study completion, an average of 3 years
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Dose EscalationEXPERIMENTAL3+3 design, 5 dose levels
Expansion ExpansionEXPERIMENTALPart B will proceed in a 2-stage design that will investigate 2 dose arms of FX-909 in Stage 1; with a single arm in Stage 2 envisioned.
FX-909 in Combination with PembrolizumabEXPERIMENTALPart 1A1 will be a dose-escalation study to investigate FX-909 in combination with Pembrolizumab.
Interventions
NameTypeDescription
FX-909DRUGFX-909 is an orally available new molecular entity that inhibits basal- and ligand-activated transcription by PPARG.
Pembrolizumab (KEYTRUDA ®)DRUGPembrolizumab is an immunotherapy checkpoint inhibitor.
KEYTRUDA ®( Pembrolizumab)DRUGKeytruda is an immunotherapy checkpoint inhibitor.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites12

Part A/B Inclusion Criteria: 1. Able to understand and willing to sign an informed consent. 2. Age ≥ 18 years. 3. Eastern Cooperative Oncology Group (ECOG) performance status 0, 1, or 2. 4. An archival, paraffin-embedded, formalin-fixed, tumor sample (see Laboratory Manual for details) that in Part...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT05929235studyFirstPostDate: changed