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UGN-301

Phase 1

Non-muscle Invasive Bladder Cancer | Small molecule | Oncology |UroGen Pharma Ltd.|Last Updated: Jan 14, 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
CONTROLLEDBiomarker
Total Trials1
Total Enrollment51
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05375903A Phase 1 Dose-escalation Study of UGN-301 in Patients With Recurrent Non-muscle Invasive Bladder Cancer (NMIBC)PHASE1 COMPLETED 51Jun 1, 2022Jan 9, 2026Jan 14, 202613 United States, Italy +1
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Study Endpoints
Primary Endpoints
Incidence of dose-limiting toxicities (DLTs) and treatment-emergent adverse events (TEAEs)
Up to 15 months

The number of patients with each type of event will be summarized.

Concentration of UGN-301 in blood and urine
6 weeks

Data will be summarized using descriptive statistics.

Complete response rate (CRR)
3 months

CRR is defined as the proportion of CIS patients who achieved CR at the Week 12 (3-month) Visit.

Recurrence-free survival (RFS) rate
3 months

RFS rate is defined as the proportion of patients with Ta/T1 disease who are recurrence-free at the Week 12 (3-month) Visit.

Secondary Endpoints
Presence of anti-drug antibodies (ADA) in serum
3 months
UGN-301 maximum serum concentration (Cmax) following single and repeat dose administration
6 weeks
UGN-301 area under the concentration-time curve (AUC) following single and repeat dose administration
6 weeks
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
UGN-301 monotherapy dose escalation (Arm A)EXPERIMENTALDose escalation of UGN-301 monotherapy in patients with recurrent NMIBC with high grade (HG) Ta and/or T1 disease and/or CIS or recurrent intermediate risk (IR) low grade (LG) Ta and/or T1 disease.
UGN-301 dose escalation + UGN-201 combination (Arm B)EXPERIMENTALDose escalation of UGN-301 in combination with a fixed dose of UGN-201 in patients with recurrent NMIBC with HG Ta and/or T1 disease and/or CIS.
UGN-301 dose escalation + gemcitabine combination (Arm C)EXPERIMENTALDose escalation of UGN-301 in combination with a fixed dose of gemcitabine in patients with recurrent NMIBC with HG Ta and/or T1 disease and/or CIS.
Interventions
NameTypeDescription
UGN-301DRUGInduction Period: Intravesical administration once weekly for 6 weeks. Optional Maintenance Period: Intravesical administration once every 3 months (at 6, 9, and 12 months after the start of treatment).
UGN-201DRUGInduction Period: Intravesical administration once weekly for 6 weeks. Optional Maintenance Period: Intravesical administration once every 3 months (at 6, 9, and 12 months after the start of treatment).
GemcitabineDRUGInduction Period: Intravesical administration once weekly for 6 weeks. Optional Maintenance Period: Intravesical administration once every 3 months (at 6, 9, and 12 months after the start of treatment).
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: 1. Able to give informed consent. 2. Arm A: Have confirmed recurrent NMIBC with HG Ta and/or T1 disease and/or CIS or recurrent IR LG Ta and/or T1 disease. Arm B: Have confirmed recurrent NMIBC with HG Ta and/or T1 disease and/or CIS. Arm C: Have confirmed recurrent NMIBC wi...

Countries:United StatesItalySpain
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