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A Phase 3 Study of UGN-102 for Low-Grade Intermediate-Risk Non-Muscle Invasive Bladder Cancer

A Randomized, Controlled, Open-Label Study of the Efficacy, Durability, and Safety of UGN-102 With or Without TURBT in Patients With Low-Grade Intermediate-Risk Non-Muscle Invasive Bladder Cancer (LG-IR-NMIBC)

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04688931
Acronym
ATLAS
Enrollment
282
Registered
2020-12-30
Start date
2021-02-19
Completion date
2023-03-17
Last updated
2024-06-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bladder Cancer, Urothelial Carcinoma, Urothelial Carcinoma Bladder

Keywords

Non-muscle invasive bladder cancer, Low grade non-muscle invasive bladder cancer, Intermediate risk non-muscle invasive bladder cancer, NMIBC, UGN-102, Mitomycin, Transurethral resection of bladder tumors, TURBT

Brief summary

This global, randomized, controlled, open-label Phase 3 study was designed to assess the long-term efficacy and safety of UGN-102 (mitomycin) for intravesical solution with or without (±) transurethral resection of bladder tumors (TURBT) versus TURBT alone for the treatment of patients with low-grade intermediate-risk non-muscle invasive bladder cancer (LG-IR-NMIBC).

Detailed description

Eligible patients were randomized in a 1:1 ratio to UGN-102 ± TURBT or TURBT alone. Randomization was stratified by the presence of a previous LG-NMIBC episode within 1 year of the current diagnosis (yes or no). Starting on Day 1, patients randomized to the UGN-102 ± TURBT arm will receive 6 weekly intravesical instillations of UGN-102 and patients randomized to the TURBT alone arm underwent TURBT. All patients returned to the clinic approximately 3 months after the start of treatment for a disease assessment visit. Response to treatment was determined based on visual observation (white light cystoscopy), histopathology of any remaining or new lesions, and voiding urine cytology. Patients confirmed to have a complete response (CR), defined as having no detectable disease (NDD) in the bladder, received no further treatment and entered the Follow-up Period of the study. Patients confirmed to have a non-complete response (NCR) due to residual LG disease in either treatment arm underwent TURBT of any remaining lesions and then entered the Follow-up Period of the study. During the Follow-up Period, patients returned to the clinic every 3 months to determine if they remained disease free. Patients remained on study until completion of all follow-up visits or until disease recurrence, disease progression, or death was documented, whichever occurred first. Patients determined to have a protocol-defined recurrence or progression at any follow-up or unscheduled visit were considered to have completed the study and released to the care of their treating physician. Study enrollment was stopped early by the sponsor to pursue an alternative development strategy for UGN-102 in the treatment of bladder cancer. Patients who had consented at the time the trial terminated were permitted to continue, but follow-up was terminated once the last patient had been followed for 15 months after the start of treatment.

Interventions

UGN-102 consists of mitomycin and sterile hydrogel (a proprietary thermally responsive gel) that is used to reconstitute mitomycin before instillation. The reverse thermal properties of UGN-102 allow for local administration of mitomycin as a liquid under chilled conditions, with subsequent conversion to a semi-solid gel depot following instillation into the bladder.

PROCEDURETURBT

The current standard of care for treatment of LG-IR-NMIBC is TURBT under general anesthesia.

Sponsors

UroGen Pharma Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in the protocol. 2. Patient who has newly diagnosed or historic LG-NMIBC (Ta) histologically confirmed by cold cup biopsy at Screening or within 8 weeks of Screening. 3. Has intermediate risk disease, defined as having 1 or 2 of the following: * Presence of multiple tumors; * Solitary tumor \> 3 cm; * Recurrence (≥ 1 occurrence of LG-NMIBC within 1 year of the current diagnosis). 4. Negative voiding cytology for HG disease within 6 weeks of Screening. 5. Has adequate organ and bone marrow function as determined by the following routine laboratory tests: * Leukocytes ≥ 3,000 cells per μL; * Absolute neutrophil count ≥ 1,500 cells per μL; * Platelets ≥ 100,000 per μL; * Hemoglobin ≥ 9.0 g/dL; * Total bilirubin ≤ 1.5 x upper limit of normal (ULN); * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 × ULN; * Alkaline phosphatase (ALP) ≤ 2.5 × ULN; * Estimated glomerular filtration rate (eGFR) ≥ 30 mL/min. 6. Has no evidence of active urinary tract infection (UTI). 7. Contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for clinical study participants. Women of childbearing potential (defined as premenopausal women who have not been sterilized), including female patients and female partners of male patients, must be willing to use 2 acceptable forms of effective contraception from enrollment through 6 months post-treatment.

Exclusion criteria

1. History of carcinoma in situ (CIS) on preliminary cystoscopy within 5 years of enrollment. 2. Received Bacillus Calmette-Guérin (BCG) treatment for urothelial carcinoma (UC) within previous 1 year. 3. History of HG papillary UC in the past 2 years. 4. Known allergy or sensitivity to mitomycin that in the investigator's opinion cannot be readily managed. 5. Clinically significant urethral stricture that would preclude passage of a urethral catheter. 6. History of pelvic radiotherapy. 7. History of: * Neurogenic bladder; * Active urinary retention; * Any other condition that would prohibit normal voiding. 8. Past or current muscle invasive (ie, T2, T3, T4) or metastatic UC or concurrent upper tract UC. 9. Current tumor stage of T1. 10. Has an underlying substance abuse or psychiatric disorder such that, in the opinion of the investigator, the patient would be unable to comply with the protocol. 11. History of prior treatment with an intravesical chemotherapeutic agent except for a single dose of chemotherapy immediately after any previous TURBT. 12. Has previously participated in a study in which they received UGN-102. 13. Has participated in a study with an investigational agent or device within 30 days of randomization.

Design outcomes

Primary

MeasureTime frameDescription
Disease-free Survival (DFS)15 monthsDFS is defined as the time from randomization until the earliest date of any of the following events: failure to be rendered free of local disease at the 3-month Visit (TURBT arm only), recurrence of LG disease after the 3-month Visit (ie, during the Follow-up Period), progression to high-grade (HG) disease, or death due to any cause. Summarized is the Kaplan-Meier estimated probability of remaining event-free at 15 months from randomization.

Secondary

MeasureTime frameDescription
Complete Response Rate (CRR)3 monthsCRR is defined as the percentage of patients who achieve CR at the 3-month Visit.
Duration of Response (DOR)12 monthsDOR is defined as the time from first documented CR until the earliest date of recurrence of LG disease, progression to HG disease, or death due to any cause. DOR applies only to patients who achieve CR at the 3-month Visit. Summarized is the Kaplan-Meier estimated probability of remaining in response at 12 months after 3-month CR.
Observed CRR at Scheduled Disease Assessment Time Points12 monthsObserved CRR at scheduled disease assessment time points is defined as the percentage of patients who achieve CR at the 3-month Visit and maintain CR up to a particular follow-up visit. Summarized is the observed percentage of patients remaining in response at 3, 6, 9, and 12 months after 3-month CR.
Number of TURBTs3 monthsNumber of TURBTs is defined as the average number of per protocol TURBTs per patient in each arm. Per protocol TURBTs are defined as the Day 1 TURBT for patients in the TURBT alone arm and TURBT due to residual LG disease at the 3-month disease assessment in either arm.
Time to Recurrence (TTR)15 monthsTTR is defined as the time from randomization until the earliest date of any of the following events: failure to be rendered free of local disease at the 3-month Visit (TURBT arm only), recurrence of LG disease after the 3-month Visit (ie, during the Follow-up Period), or progression to HG disease. Summarized is the Kaplan-Meier estimated probability of remaining event-free at 15 months from randomization.
Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestUp to 21 monthsThe number of patients with each type of event will be summarized. TEAEs were defined as adverse events (AEs) that occurred on or after the day of first instillation of UGN-102 for patients in the UGN-102 ± TURBT arm or the day of initial TURBT for patients in the TURBT alone arm, or pre-treatment events that worsened during the study.
Number of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesUp to 6 monthsThe number of patients with each type of event will be summarized.
Number of Participants With Post-baseline PCS Serum Chemistry ValuesUp to 6 monthsThe number of patients with each type of event will be summarized.
Changes From Baseline in Health-related Quality of LifePre-treatment to 3 months after the start of treatmentThe European Organisation for Research and Treatment of Cancer (EORTC) 24-item quality of life questionnaire for patients with NMIBC (QLQ-NMIBC24) is a patient-reported instrument that assesses 11 domains (urinary symptoms, malaise, future worries, bloating and flatulence, intravesical treatment issues, sexual intimacy, risk of contaminating partner, male sexual problems, female sexual problems, sexual function, and sexual enjoyment). All of the domains range in score from 0 to 100 with lower scores reflecting better functioning/quality of life and higher scores reflecting worse functioning/quality of life. Summarized is the change from baseline in domain scores at the 3-month Visit. Changes in domain scores were calculated for patients with non-missing answers at both time points.

Countries

Bulgaria, Estonia, Georgia, Israel, Latvia, Poland, Russia, Serbia, Ukraine, United States

Participant flow

Participants by arm

ArmCount
UGN-102 ± TURBT
6 weekly intravesical instillations of UGN-102 (75 mg mitomycin) starting on Day 1 + TURBT for patients with NCR due to residual LG disease at the 3-month Visit (3 months after the start of treatment with UGN-102).
142
TURBT Alone
TURBT on Day 1 + repeat TURBT for patients with NCR due to residual LG disease at the 3-month Visit (3 months after the initial TURBT).
140
Total282

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event41
Overall StudyDisease Progression02
Overall StudyLost to Follow-up13
Overall StudyNoncompliance01
Overall StudyNot Eligible13
Overall StudyOther Reason12
Overall StudyPhysician Decision35
Overall StudyRandomization Error30
Overall StudySponsor Requirement11
Overall StudyWithdrawal by Subject516

Baseline characteristics

CharacteristicTotalTURBT AloneUGN-102 ± TURBT
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
168 Participants77 Participants91 Participants
Age, Categorical
Between 18 and 65 years
114 Participants63 Participants51 Participants
Age, Continuous68 years67 years68 years
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants1 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
277 Participants137 Participants140 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants2 Participants0 Participants
Previous LG-NMIBC Episode(s)
No
163 Participants75 Participants88 Participants
Previous LG-NMIBC Episode(s)
Yes
119 Participants65 Participants54 Participants
Previous LG-NMIBC Episode(s) Within 1 Year
No
201 Participants100 Participants101 Participants
Previous LG-NMIBC Episode(s) Within 1 Year
Yes
81 Participants40 Participants41 Participants
Prior TURBT(s)
No
166 Participants76 Participants90 Participants
Prior TURBT(s)
Yes
116 Participants64 Participants52 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants1 Participants
Race (NIH/OMB)
White
279 Participants139 Participants140 Participants
Region of Enrollment
Bulgaria
63 participants26 participants37 participants
Region of Enrollment
Estonia
18 participants8 participants10 participants
Region of Enrollment
Georgia
30 participants15 participants15 participants
Region of Enrollment
Israel
1 participants1 participants0 participants
Region of Enrollment
Latvia
16 participants7 participants9 participants
Region of Enrollment
Poland
2 participants1 participants1 participants
Region of Enrollment
Russia
91 participants47 participants44 participants
Region of Enrollment
Serbia
5 participants4 participants1 participants
Region of Enrollment
Ukraine
31 participants20 participants11 participants
Region of Enrollment
United States
25 participants11 participants14 participants
Sex: Female, Male
Female
84 Participants47 Participants37 Participants
Sex: Female, Male
Male
198 Participants93 Participants105 Participants
Smoking History
Non-smoker
136 Participants73 Participants63 Participants
Smoking History
Smoker
146 Participants67 Participants79 Participants
Tumor Count
Missing
12 Participants6 Participants6 Participants
Tumor Count
Multiple
176 Participants94 Participants82 Participants
Tumor Count
Single
94 Participants40 Participants54 Participants
Tumor Size
≤ 3 cm
142 Participants73 Participants69 Participants
Tumor Size
> 3 cm
126 Participants59 Participants67 Participants
Tumor Size
Missing
14 Participants8 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1381 / 132
other
Total, other adverse events
102 / 13862 / 132
serious
Total, serious adverse events
12 / 1387 / 132

Outcome results

Primary

Disease-free Survival (DFS)

DFS is defined as the time from randomization until the earliest date of any of the following events: failure to be rendered free of local disease at the 3-month Visit (TURBT arm only), recurrence of LG disease after the 3-month Visit (ie, during the Follow-up Period), progression to high-grade (HG) disease, or death due to any cause. Summarized is the Kaplan-Meier estimated probability of remaining event-free at 15 months from randomization.

Time frame: 15 months

Population: All randomized patients regardless of whether the treatment was administered.

ArmMeasureValue (NUMBER)
UGN-102 ± TURBTDisease-free Survival (DFS)72.0 percentage of participants
TURBT AloneDisease-free Survival (DFS)49.5 percentage of participants
95% CI: [0.29, 0.68]
Secondary

Changes From Baseline in Health-related Quality of Life

The European Organisation for Research and Treatment of Cancer (EORTC) 24-item quality of life questionnaire for patients with NMIBC (QLQ-NMIBC24) is a patient-reported instrument that assesses 11 domains (urinary symptoms, malaise, future worries, bloating and flatulence, intravesical treatment issues, sexual intimacy, risk of contaminating partner, male sexual problems, female sexual problems, sexual function, and sexual enjoyment). All of the domains range in score from 0 to 100 with lower scores reflecting better functioning/quality of life and higher scores reflecting worse functioning/quality of life. Summarized is the change from baseline in domain scores at the 3-month Visit. Changes in domain scores were calculated for patients with non-missing answers at both time points.

Time frame: Pre-treatment to 3 months after the start of treatment

Population: All patients who received any dose of UGN-102 (treatment arm) or at least one TURBT intervention (control arm). At the time of the 3-month Visit, patients had received only the primary intervention (6 weekly intravesical instillations of UGN-102 starting on Day 1 or TURBT on Day 1).

ArmMeasureGroupValue (MEAN)Dispersion
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeFuture Worries-12.7 score on a scaleStandard Deviation 26.49
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeSexual Intimacy0.0 score on a scaleStandard Deviation 19.86
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeIntravesical Treatment Issues-4.0 score on a scaleStandard Deviation 25.61
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeRisk of Contaminating Partner1.6 score on a scaleStandard Deviation 26.12
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeBloating and Flatulence-7.7 score on a scaleStandard Deviation 18.03
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeFemale Sexual Problems-10.0 score on a scaleStandard Deviation 16.1
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeMalaise-4.4 score on a scaleStandard Deviation 13.58
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeSexual Function0.4 score on a scaleStandard Deviation 18.02
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeMale Sexual Problems0.9 score on a scaleStandard Deviation 32.99
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeSexual Enjoyment8.7 score on a scaleStandard Deviation 36.97
UGN-102 ± TURBTChanges From Baseline in Health-related Quality of LifeUrinary Symptoms-10.7 score on a scaleStandard Deviation 17.88
TURBT AloneChanges From Baseline in Health-related Quality of LifeSexual Enjoyment-1.0 score on a scaleStandard Deviation 32.26
TURBT AloneChanges From Baseline in Health-related Quality of LifeUrinary Symptoms-4.5 score on a scaleStandard Deviation 20.04
TURBT AloneChanges From Baseline in Health-related Quality of LifeMalaise-1.1 score on a scaleStandard Deviation 16.41
TURBT AloneChanges From Baseline in Health-related Quality of LifeIntravesical Treatment Issues-2.9 score on a scaleStandard Deviation 25.09
TURBT AloneChanges From Baseline in Health-related Quality of LifeFuture Worries-8.3 score on a scaleStandard Deviation 26.74
TURBT AloneChanges From Baseline in Health-related Quality of LifeBloating and Flatulence-3.0 score on a scaleStandard Deviation 16.68
TURBT AloneChanges From Baseline in Health-related Quality of LifeMale Sexual Problems-0.6 score on a scaleStandard Deviation 30.75
TURBT AloneChanges From Baseline in Health-related Quality of LifeSexual Intimacy3.6 score on a scaleStandard Deviation 30.12
TURBT AloneChanges From Baseline in Health-related Quality of LifeRisk of Contaminating Partner0.0 score on a scaleStandard Deviation 16.8
TURBT AloneChanges From Baseline in Health-related Quality of LifeFemale Sexual Problems-8.9 score on a scaleStandard Deviation 15.26
TURBT AloneChanges From Baseline in Health-related Quality of LifeSexual Function-1.6 score on a scaleStandard Deviation 22.2
Secondary

Complete Response Rate (CRR)

CRR is defined as the percentage of patients who achieve CR at the 3-month Visit.

Time frame: 3 months

Population: All randomized patients regardless of whether the treatment was administered. At the time of the 3-month Visit, patients had received only the primary intervention (6 weekly intravesical instillations of UGN-102 starting on Day 1 or TURBT on Day 1).

ArmMeasureValue (NUMBER)
UGN-102 ± TURBTComplete Response Rate (CRR)64.8 percentage of participants
TURBT AloneComplete Response Rate (CRR)63.6 percentage of participants
Secondary

Duration of Response (DOR)

DOR is defined as the time from first documented CR until the earliest date of recurrence of LG disease, progression to HG disease, or death due to any cause. DOR applies only to patients who achieve CR at the 3-month Visit. Summarized is the Kaplan-Meier estimated probability of remaining in response at 12 months after 3-month CR.

Time frame: 12 months

Population: All patients who achieved CR at the 3-month disease assessment. Patients who achieved CR at 3 months received only the primary intervention (6 weekly intravesical instillations of UGN-102 starting on Day 1 or TURBT on Day 1).

ArmMeasureValue (NUMBER)
UGN-102 ± TURBTDuration of Response (DOR)79.7 percentage of participants
TURBT AloneDuration of Response (DOR)67.7 percentage of participants
95% CI: [0.24, 0.86]
Secondary

Number of Participants With Post-baseline PCS Serum Chemistry Values

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

Time frame: Up to 6 months

Population: All patients who received any dose of UGN-102 (treatment arm) or at least one TURBT intervention (control arm) and who had non-missing laboratory values at the specified time.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesAspartate aminotransferase > 3 × ULN2 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesPotassium < 3.0 mEq/L0 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesCreatinine > 2.2 mg/dL0 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesPotassium > 5.5 mEq/L18 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesBilirubin > 1.5 × ULN3 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesSodium ≤ 130 mEq/L2 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesGamma glutamyl transferase > 2.5 × ULN5 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesSodium > 150 mEq/L2 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline PCS Serum Chemistry ValuesAlanine aminotransferase > 3 × upper limit of normal (ULN)2 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesSodium > 150 mEq/L0 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesAlanine aminotransferase > 3 × upper limit of normal (ULN)1 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesAspartate aminotransferase > 3 × ULN1 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesBilirubin > 1.5 × ULN2 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesCreatinine > 2.2 mg/dL1 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesGamma glutamyl transferase > 2.5 × ULN1 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesPotassium < 3.0 mEq/L1 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesPotassium > 5.5 mEq/L10 Participants
TURBT AloneNumber of Participants With Post-baseline PCS Serum Chemistry ValuesSodium ≤ 130 mEq/L1 Participants
Secondary

Number of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology Values

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

Time frame: Up to 6 months

Population: All patients who received any dose of UGN-102 (treatment arm) or at least one TURBT intervention (control arm) and who had non-missing laboratory values at the specified time.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
UGN-102 ± TURBTNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesHemoglobin < 0.8 × lower limit of normal and > 20% decrease from baseline4 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesLeukocytes ≤ 2.8 × 10^3/μL4 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesLeukocytes ≥ 16.0 × 10^3/μL1 Participants
UGN-102 ± TURBTNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesPlatelets < 75 × 10^3/μL1 Participants
TURBT AloneNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesPlatelets < 75 × 10^3/μL0 Participants
TURBT AloneNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesHemoglobin < 0.8 × lower limit of normal and > 20% decrease from baseline1 Participants
TURBT AloneNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesLeukocytes ≥ 16.0 × 10^3/μL0 Participants
TURBT AloneNumber of Participants With Post-baseline Potentially Clinically Significant (PCS) Hematology ValuesLeukocytes ≤ 2.8 × 10^3/μL1 Participants
Secondary

Number of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special Interest

The number of patients with each type of event will be summarized. TEAEs were defined as adverse events (AEs) that occurred on or after the day of first instillation of UGN-102 for patients in the UGN-102 ± TURBT arm or the day of initial TURBT for patients in the TURBT alone arm, or pre-treatment events that worsened during the study.

Time frame: Up to 21 months

Population: All patients who received any dose of UGN-102 (treatment arm) or at least one TURBT intervention (control arm).

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
UGN-102 ± TURBTNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny TEAEs104 Participants
UGN-102 ± TURBTNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny serious TEAEs12 Participants
UGN-102 ± TURBTNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny TEAEs of special interest78 Participants
TURBT AloneNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny TEAEs63 Participants
TURBT AloneNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny serious TEAEs7 Participants
TURBT AloneNumber of Participants With Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Special InterestAny TEAEs of special interest36 Participants
Secondary

Number of TURBTs

Number of TURBTs is defined as the average number of per protocol TURBTs per patient in each arm. Per protocol TURBTs are defined as the Day 1 TURBT for patients in the TURBT alone arm and TURBT due to residual LG disease at the 3-month disease assessment in either arm.

Time frame: 3 months

Population: All patients who received any dose of UGN-102 (treatment arm) or at least one TURBT intervention (control arm).

ArmMeasureValue (MEAN)Dispersion
UGN-102 ± TURBTNumber of TURBTs0.2 TURBT proceduresStandard Deviation 0.38
TURBT AloneNumber of TURBTs1.1 TURBT proceduresStandard Deviation 0.34
Secondary

Observed CRR at Scheduled Disease Assessment Time Points

Observed CRR at scheduled disease assessment time points is defined as the percentage of patients who achieve CR at the 3-month Visit and maintain CR up to a particular follow-up visit. Summarized is the observed percentage of patients remaining in response at 3, 6, 9, and 12 months after 3-month CR.

Time frame: 12 months

Population: All patients who achieved CR at the 3-month disease assessment. Patients who achieved CR at 3 months received only the primary intervention (6 weekly intravesical instillations of UGN-102 starting on Day 1 or TURBT on Day 1).

ArmMeasureGroupValue (NUMBER)
UGN-102 ± TURBTObserved CRR at Scheduled Disease Assessment Time Points6 Months After 3-Month CR80.4 percentage of participants
UGN-102 ± TURBTObserved CRR at Scheduled Disease Assessment Time Points3 Months After 3-Month CR92.4 percentage of participants
UGN-102 ± TURBTObserved CRR at Scheduled Disease Assessment Time Points9 Months After 3-Month CR75.0 percentage of participants
UGN-102 ± TURBTObserved CRR at Scheduled Disease Assessment Time Points12 Months After 3-Month CR71.7 percentage of participants
TURBT AloneObserved CRR at Scheduled Disease Assessment Time Points12 Months After 3-Month CR55.1 percentage of participants
TURBT AloneObserved CRR at Scheduled Disease Assessment Time Points9 Months After 3-Month CR57.3 percentage of participants
TURBT AloneObserved CRR at Scheduled Disease Assessment Time Points3 Months After 3-Month CR71.9 percentage of participants
TURBT AloneObserved CRR at Scheduled Disease Assessment Time Points6 Months After 3-Month CR62.9 percentage of participants
Secondary

Time to Recurrence (TTR)

TTR is defined as the time from randomization until the earliest date of any of the following events: failure to be rendered free of local disease at the 3-month Visit (TURBT arm only), recurrence of LG disease after the 3-month Visit (ie, during the Follow-up Period), or progression to HG disease. Summarized is the Kaplan-Meier estimated probability of remaining event-free at 15 months from randomization.

Time frame: 15 months

Population: All randomized patients regardless of whether the treatment was administered.

ArmMeasureValue (NUMBER)
UGN-102 ± TURBTTime to Recurrence (TTR)72.0 percentage of participants
TURBT AloneTime to Recurrence (TTR)50.3 percentage of participants
95% CI: [0.3, 0.7]

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026