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A Study to Examine the Safety and Efficacy of a New Drug in Patients With Symptoms of Overactive Bladder (OAB)

An International Phase 3, Randomized, Double-Blind, Placebo- and Active (Tolterodine)-Controlled Multicenter Study to Evaluate the Safety and Efficacy of Vibegron in Patients With Symptoms of Overactive Bladder

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03492281
Acronym
Empowur
Enrollment
1530
Registered
2018-04-10
Start date
2018-03-26
Completion date
2019-02-04
Last updated
2021-03-04

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

Conditions

Overactive Bladder

Keywords

Beta-3 adrenergic receptor (β3-AR) agonists, Incontinence, OAB, Vibegron, Urge urinary incontinence, Urinary bladder, overactive, Urologic Diseases, Lower Urinary Tract Symptoms, Urological Agents

Brief summary

This study is designed to evaluate the safety, tolerability, and efficacy of vibegron administered once daily in patients with OAB.

Interventions

single daily oral dose of vibegron 75 mg for 12 weeks

DRUGVibegron placebo

placebo to match vibegron (experimental drug)

single daily oral dose of tolterodine tartrate ER 4 mg for 12 weeks

DRUGTolterodine placebo

placebo to match tolterodine (active comparator)

Sponsors

Urovant Sciences GmbH
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

1. Has a history of OAB for at least 3 months prior to the Screening Visit. 2. Meets either the OAB Wet or OAB Dry criteria.

Exclusion criteria

Urology Medical History 1. Patient had an average total daily urine volume \> 3000 mL in the past 6 months or during the 14-day Run-in Period. 2. Has lower urinary tract pathology that could, in the opinion of the Investigator, be responsible for urgency, frequency, or incontinence. 3. Has a history of surgery to correct stress urinary incontinence, pelvic organ prolapse, or procedural treatments for BPH within 6 months of Screening. 4. Has current history or evidence of Stage 2 or greater pelvic organ prolapse (prolapse extends beyond the hymenal ring). 5. Patient is currently using a pessary for the treatment of pelvic organ prolapse. 6. Has a known history of elevated post-void residual volume defined as greater than 150 mL. 7. Has undergone bladder training or electrostimulation within 28 days prior to Screening or plans to initiate either during the study. 8. Has an active or recurrent (\> 3 episodes per year) urinary tract infection by clinical symptoms or pre-defined laboratory criteria. 9. Has a requirement for an indwelling catheter or intermittent catheterization. 10. Has received an intradetrusor injection of botulinum toxin within 9 months prior to Screening. 11. Has uncontrolled hyperglycemia (defined as fasting blood glucose \> 150 mg/dL or 8.33 mmol/L and/or non-fasting blood glucose \> 200 mg/dL or 11.1 mmol/L) or, if in the opinion of the Investigator, is uncontrolled. 12. Has evidence of diabetes insipidus. 13. Is pregnant, breast-feeding, or is planning to conceive within the projected duration of the study. 14. Has a concurrent malignancy or history of any malignancy within 5 years prior to signing informed consent, except for adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer. 15. Has uncontrolled hypertension (systolic blood pressure of ≥ 180 mmHg and/or diastolic blood pressure of ≥ 100 mmHg) or has a resting heart rate (by pulse) \> 100 beats per minute. 16. Has narrow angle glaucoma (primary open angle glaucoma is not excluded). 17. Has a history of cerebral vascular accident, transient ischemic attack, unstable angina, myocardial infarction, coronary artery interventions (e.g., coronary artery bypass grafting or percutaneous coronary interventions \[e.g., angioplasty, stent insertion\]), or neurovascular interventions (e.g., carotid artery stenting) within 6 months prior to the Screening Visit. Has a known history of liver disease. 18. Has a history of injury, surgery, or neurodegenerative diseases (e.g., multiple sclerosis, Parkinson's) that could affect the lower urinary tract or its nerve supply. 19. Has hematuria, including microscopic hematuria according to pre-defined criteria. 20. Has clinically significant electrocardiogram (ECG) abnormality. 21. Has alanine aminotransferase or aspartate aminotransferase \> 2.0 times the upper limit of normal (ULN), or bilirubin (total bilirubin) \> 1.5 x ULN (or \> 2.0 x ULN if secondary to Gilbert syndrome or pattern consistent with Gilbert syndrome). 22. Has an estimated glomerular filtration rate (eGFR) \< 30 mL/min/1.73 m2. 23. Has an allergy, intolerance, or a history of a significant clinical or laboratory adverse experience associated with any of the active or inactive components of the vibegron formulation or tolterodine formulation. 24. Is currently participating or has participated in a study with an investigational compound or device within 28 days prior to signing informed consent, or has participated in any previous study with vibegron.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline (CFB) at Week 12 in the Average Number of Micturitions Per 24 Hours in All Overactive Bladder (OAB) ParticipantsBaseline (BL); Week 12A micturition/void is defined as Urinated in Toilet as indicated on the Patient Voiding Diary (PVD). The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. The average daily number of micturitions was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of micturitions that occurred on a Complete Diary Day (CDD) divided by the number of CDDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures are study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL number of micturitions, and treatment by study visit interaction. FAS=Full Analysis Set.
CFB at Week 12 in the Average Number of Urge Urinary Incontinence (UUI) Episodes Per 24 Hours in OAB Wet ParticipantsBaseline; Week 12The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), BL number of UUI episodes and treatment by study visit interaction. FAS-I=Full Analysis Set for Incontinence.

Secondary

MeasureTime frameDescription
Percentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Baseline; Week 12The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD).
Percentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Baseline; Week 12An urgency episode is defined as the Need to Urinate Immediately as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD).
CFB at Week 12 in the Average Number of Total Incontinence Episodes Over 24 Hours in OAB Wet ParticipantsBaseline; Week 12Total incontinence is defined as having any reason for Accidental Urine Leakage and/or Accidental Urine Leakage checked, as indicated on the PVD. It is assumed that if the participant recorded a reason for leakage then the accidental urine leakage occurred. CFB is calculated as the post-BL value minus the BL value. Over 24 hours corresponds to one Diary Day (i.e., time between when the par. got up for the day each morning and time the par. got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), BL number of incontinence episodes, and treatment by study visit interaction. hr = hours.
CFB at Week 12 in the Coping Score From the Overactive Bladder Questionnaire Long Form (OAB-q LF, 1-week Recall) in All OAB ParticipantsBaseline; Week 12The OAB-q LF is a validated patient-reported outcome. 8 questions of the OAB-q LF ask participants how well they have coped with their bladder symptoms during the previous week, as a measure of quality of life. Each question has a response ranging from not coping (= 1) to coping well (= 6). These questions make up the coping scale. The raw score (sum of question scores \[ranging from 8 to 48\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to a higher quality of life, and lower scores represent a lower quality of life. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.
CFB at Week 12 in the Average Volume Voided Per Micturition in All OAB ParticipantsBaseline; Week 12A micturition/void is defined as Urinated in Toilet as indicated on the PVD. The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL volume (milliliters \[mL\]), and treatment by study visit interaction.
CFB at Week 12 in the Average Number of Urgency Episodes Over 24 Hours in All OAB ParticipantsBaseline; Week 12An urgency episode is defined as the Need to Urinate Immediately as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Over 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL number of urgency episodes, and treatment by study visit interaction.
CFB at Week 12 in the Symptom Bother Score From the OAB-q LF (1-week Recall) in All OAB ParticipantsBaseline; Week 12The OAB-q LF is a validated patient-reported outcome. The first 8 questions of the OAB-q LF ask participants how much they were bothered by their bladder symptoms during the previous week. Each question has a response ranging from Not at all (= 1) to A very great deal (= 6). These questions make up the symptom bother scale. The raw score (sum of question scores \[ranging from 8 to 48\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to the symptoms having a larger bother, and lower scores represent a lower amount of bother due to symptoms. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.
Percentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Week 12A micturition/void is defined as Urinated in Toilet as indicated on the PVD. The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. A participant was defined as having an average of \< 8 daily micturitions if the arithmetic mean of the number of micturitions per day in the PVD was less than 8 . Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD).
Percentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Baseline; Week 12Total incontinence is defined as having any reason for Accidental Urine Leakage and/or Accidental Urine Leakage checked, as indicated on the PVD. It is assumed that if the participant recorded a reason for leakage then the accidental urine leakage occurred. All events marked as having leakage, regardless of cause, or where Accidental Leakage was checked. were used in the analysis. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD.
CFB at Week 12 in Overall Bladder Symptoms Based on Patient Global Impression of Severity (PGI-Severity) in All OAB ParticipantsBaseline; Week 12The Patient Global Impression (PGI) questions are designed to assess a participant's overall impression of OAB. For the PGI-Severity score, participants are asked to rate their OAB symptoms over the previous week with one of the following responses: 1 = none, 2 = mild, 3 = moderate, 4 = severe. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL score, and treatment by study visit interaction.
CFB at Week 12 in Overall Control Over Bladder Symptoms Based on Patient Global Impression of Control (PGI-Control) in All OAB ParticipantsBaseline; Week 12The Patient Global Impression (PGI) questions are designed to assess a participant's overall impression of OAB. For the PGI-Control score, participants were asked to rate how much control they had over their OAB symptoms over the previous week with one of the following responses: 1 = complete control, 2 = a lot of control, 3 = some control, 4 = only a little control, 5 = no control. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL score, and treatment by study visit interaction.
CFB at Week 12 in the Health-related Quality of Life (HRQL) Total Score From the OAB-q LF (1-week Recall) in All OAB ParticipantsBaseline; Week 12The OAB-q LF is a validated patient-reported outcome. The 25 questions comprising the Coping, Concern, Sleep and Social Interaction subscales of the OAB-q LF ask participants how much their symptoms have affected their life over the last week. Each question has a response ranging from None of the time (= 1) to All of the time (= 6). The raw score (sum of question scores for the 4 subscales \[ranging from 25 to 150\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to a higher quality of life, and lower scores represent a lower quality of life. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.
Percentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Baseline; Week 12The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD).

Countries

Canada, Hungary, Latvia, Lithuania, Poland, United States

Participant flow

Pre-assignment details

Of 3149 participants screened for this study, 1518 were randomized (after a 2-week, single-blind placebo Run-in Period), and 1515 received 1 dose of double-blind study drug in the Treatment Period (Safety Set: placebo, N = 540; vibegron, N = 545; tolterodine, N = 430).

Participants by arm

ArmCount
Placebo
Participants received matching placebo, orally, once daily for 12 weeks. Participants were stratified by Baseline Overactive Bladder Type (Wet versus Dry) and sex.
540
Vibegron 75 mg
Participants received vibegron 75 milligrams (mg), orally, once daily for 12 weeks. Participants were stratified by Baseline Overactive Bladder Type (Wet versus Dry) and sex.
545
Tolterodine ER 4 mg
Participants received tolterodine extended release (ER) 4 mg, orally, once daily for 12 weeks. Participants were stratified by Baseline Overactive Bladder Type (Wet versus Dry) and sex.
430
Total1,515

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event6813
Overall StudyCaptured as Other in Database863
Overall StudyDeath001
Overall StudyLack of Efficacy301
Overall StudyLost to Follow-up141510
Overall StudyPhysician Decision103
Overall StudyProtocol Violation021
Overall StudyWithdrawal by Subject211413
Overall StudyWithdrawn Due to Sponsor101

Baseline characteristics

CharacteristicPlaceboVibegron 75 mgTolterodine ER 4 mgTotal
Age, Continuous59.9 years
STANDARD_DEVIATION 13.35
60.4 years
STANDARD_DEVIATION 13.49
59.8 years
STANDARD_DEVIATION 13.27
60.0 years
STANDARD_DEVIATION 13.37
Average number of micturitions per 24 hours in all overactive bladder (OAB) participants11.72 micturitions per 24 hours
STANDARD_DEVIATION 3.971
11.38 micturitions per 24 hours
STANDARD_DEVIATION 3.508
11.53 micturitions per 24 hours
STANDARD_DEVIATION 3.184
11.54 micturitions per 24 hours
STANDARD_DEVIATION 3.595
Average number of urge urinary incontinence (UUI) episodes per 24 hours in OAB Wet participants2.80 UUI episodes
STANDARD_DEVIATION 2.978
2.78 UUI episodes
STANDARD_DEVIATION 3.105
2.72 UUI episodes
STANDARD_DEVIATION 2.616
2.77 UUI episodes
STANDARD_DEVIATION 2.926
Race/Ethnicity, Customized
American Indian or Alaska
3 Participants2 Participants0 Participants5 Participants
Race/Ethnicity, Customized
Asian
30 Participants28 Participants27 Participants85 Participants
Race/Ethnicity, Customized
Black or African American
85 Participants78 Participants72 Participants235 Participants
Race/Ethnicity, Customized
Filipino
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Hispanic
2 Participants1 Participants0 Participants3 Participants
Race/Ethnicity, Customized
Morrocan
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Multiracial
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Puerto Rican
1 Participants1 Participants1 Participants3 Participants
Race/Ethnicity, Customized
White
418 Participants435 Participants326 Participants1179 Participants
Race/Ethnicity, Customized
White and Black or African American
1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White, Black or African American
0 Participants0 Participants1 Participants1 Participants
Sex: Female, Male
Female
459 Participants463 Participants364 Participants1286 Participants
Sex: Female, Male
Male
81 Participants82 Participants66 Participants229 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 5400 / 5451 / 430
other
Total, other adverse events
38 / 54036 / 54550 / 430
serious
Total, serious adverse events
6 / 5408 / 54510 / 430

Outcome results

Primary

CFB at Week 12 in the Average Number of Urge Urinary Incontinence (UUI) Episodes Per 24 Hours in OAB Wet Participants

The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), BL number of UUI episodes and treatment by study visit interaction. FAS-I=Full Analysis Set for Incontinence.

Time frame: Baseline; Week 12

Population: FAS-I: all randomized OAB Wet participants who took at least 1 dose of double-blind study treatment and had at least 1 evaluable CFB measurement. Only those participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Average Number of Urge Urinary Incontinence (UUI) Episodes Per 24 Hours in OAB Wet Participants-1.4 UUI episodes per 24 hoursStandard Error 0.13
Vibegron 75 mgCFB at Week 12 in the Average Number of Urge Urinary Incontinence (UUI) Episodes Per 24 Hours in OAB Wet Participants-2.0 UUI episodes per 24 hoursStandard Error 0.13
Tolterodine ER 4 mgCFB at Week 12 in the Average Number of Urge Urinary Incontinence (UUI) Episodes Per 24 Hours in OAB Wet Participants-1.8 UUI episodes per 24 hoursStandard Error 0.14
p-value: <0.000195% CI: [-0.9, -0.3]MMRM
p-value: =0.012395% CI: [-0.7, -0.1]MMRM
Primary

Change From Baseline (CFB) at Week 12 in the Average Number of Micturitions Per 24 Hours in All Overactive Bladder (OAB) Participants

A micturition/void is defined as Urinated in Toilet as indicated on the Patient Voiding Diary (PVD). The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. The average daily number of micturitions was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of micturitions that occurred on a Complete Diary Day (CDD) divided by the number of CDDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures are study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL number of micturitions, and treatment by study visit interaction. FAS=Full Analysis Set.

Time frame: Baseline (BL); Week 12

Population: FAS: all randomized participants who took at least 1 dose of double-blind study treatment and had at least 1 evaluable CFB measurement. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline (CFB) at Week 12 in the Average Number of Micturitions Per 24 Hours in All Overactive Bladder (OAB) Participants-1.3 micturitions per 24 hoursStandard Error 0.14
Vibegron 75 mgChange From Baseline (CFB) at Week 12 in the Average Number of Micturitions Per 24 Hours in All Overactive Bladder (OAB) Participants-1.8 micturitions per 24 hoursStandard Error 0.14
Tolterodine ER 4 mgChange From Baseline (CFB) at Week 12 in the Average Number of Micturitions Per 24 Hours in All Overactive Bladder (OAB) Participants-1.6 micturitions per 24 hoursStandard Error 0.15
p-value: <0.00195% CI: [-0.8, -0.2]Mixed Model for Repeated Measures (MMRM)
p-value: =0.098895% CI: [-0.6, 0.1]MMRM
Secondary

CFB at Week 12 in Overall Bladder Symptoms Based on Patient Global Impression of Severity (PGI-Severity) in All OAB Participants

The Patient Global Impression (PGI) questions are designed to assess a participant's overall impression of OAB. For the PGI-Severity score, participants are asked to rate their OAB symptoms over the previous week with one of the following responses: 1 = none, 2 = mild, 3 = moderate, 4 = severe. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL score, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in Overall Bladder Symptoms Based on Patient Global Impression of Severity (PGI-Severity) in All OAB Participants-0.5 units on a scaleStandard Error 0.04
Vibegron 75 mgCFB at Week 12 in Overall Bladder Symptoms Based on Patient Global Impression of Severity (PGI-Severity) in All OAB Participants-0.8 units on a scaleStandard Error 0.04
Tolterodine ER 4 mgCFB at Week 12 in Overall Bladder Symptoms Based on Patient Global Impression of Severity (PGI-Severity) in All OAB Participants-0.7 units on a scaleStandard Error 0.04
p-value: <0.000195% CI: [-0.3, -0.1]MMRM
p-value: =0.005595% CI: [-0.2, 0]MMRM
Secondary

CFB at Week 12 in Overall Control Over Bladder Symptoms Based on Patient Global Impression of Control (PGI-Control) in All OAB Participants

The Patient Global Impression (PGI) questions are designed to assess a participant's overall impression of OAB. For the PGI-Control score, participants were asked to rate how much control they had over their OAB symptoms over the previous week with one of the following responses: 1 = complete control, 2 = a lot of control, 3 = some control, 4 = only a little control, 5 = no control. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL score, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in Overall Control Over Bladder Symptoms Based on Patient Global Impression of Control (PGI-Control) in All OAB Participants-0.7 units on a scaleStandard Error 0.05
Vibegron 75 mgCFB at Week 12 in Overall Control Over Bladder Symptoms Based on Patient Global Impression of Control (PGI-Control) in All OAB Participants-1.0 units on a scaleStandard Error 0.05
Tolterodine ER 4 mgCFB at Week 12 in Overall Control Over Bladder Symptoms Based on Patient Global Impression of Control (PGI-Control) in All OAB Participants-0.9 units on a scaleStandard Error 0.05
p-value: <0.000195% CI: [-0.4, -0.2]MMRM
p-value: <0.00195% CI: [-0.3, -0.1]MMRM
Secondary

CFB at Week 12 in the Average Number of Total Incontinence Episodes Over 24 Hours in OAB Wet Participants

Total incontinence is defined as having any reason for Accidental Urine Leakage and/or Accidental Urine Leakage checked, as indicated on the PVD. It is assumed that if the participant recorded a reason for leakage then the accidental urine leakage occurred. CFB is calculated as the post-BL value minus the BL value. Over 24 hours corresponds to one Diary Day (i.e., time between when the par. got up for the day each morning and time the par. got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), BL number of incontinence episodes, and treatment by study visit interaction. hr = hours.

Time frame: Baseline; Week 12

Population: FAS-I. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Average Number of Total Incontinence Episodes Over 24 Hours in OAB Wet Participants-1.6 total incontinence episodes over 24 hrStandard Error 0.15
Vibegron 75 mgCFB at Week 12 in the Average Number of Total Incontinence Episodes Over 24 Hours in OAB Wet Participants-2.3 total incontinence episodes over 24 hrStandard Error 0.15
Tolterodine ER 4 mgCFB at Week 12 in the Average Number of Total Incontinence Episodes Over 24 Hours in OAB Wet Participants-2.0 total incontinence episodes over 24 hrStandard Error 0.16
p-value: <0.000195% CI: [-1, -0.4]MMRM
p-value: =0.007495% CI: [-0.8, -0.1]MMRM
Secondary

CFB at Week 12 in the Average Number of Urgency Episodes Over 24 Hours in All OAB Participants

An urgency episode is defined as the Need to Urinate Immediately as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Over 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD). Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL number of urgency episodes, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Average Number of Urgency Episodes Over 24 Hours in All OAB Participants-2.0 urgency episodes over 24 hoursStandard Error 0.19
Vibegron 75 mgCFB at Week 12 in the Average Number of Urgency Episodes Over 24 Hours in All OAB Participants-2.7 urgency episodes over 24 hoursStandard Error 0.19
Tolterodine ER 4 mgCFB at Week 12 in the Average Number of Urgency Episodes Over 24 Hours in All OAB Participants-2.5 urgency episodes over 24 hoursStandard Error 0.21
p-value: =0.00295% CI: [-1.1, -0.2]MMRM
p-value: =0.064895% CI: [-0.9, 0]MMRM
Secondary

CFB at Week 12 in the Average Volume Voided Per Micturition in All OAB Participants

A micturition/void is defined as Urinated in Toilet as indicated on the PVD. The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), OAB type (wet/dry), sex, region (U.S./non-U.S.), BL volume (milliliters \[mL\]), and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Average Volume Voided Per Micturition in All OAB Participants2.2 mL per micturitionStandard Error 3.28
Vibegron 75 mgCFB at Week 12 in the Average Volume Voided Per Micturition in All OAB Participants23.5 mL per micturitionStandard Error 3.26
Tolterodine ER 4 mgCFB at Week 12 in the Average Volume Voided Per Micturition in All OAB Participants15.5 mL per micturitionStandard Error 3.52
p-value: <0.000195% CI: [14.3, 28.1]MMRM
p-value: <0.00195% CI: [5.9, 20.7]MMRM
Secondary

CFB at Week 12 in the Coping Score From the Overactive Bladder Questionnaire Long Form (OAB-q LF, 1-week Recall) in All OAB Participants

The OAB-q LF is a validated patient-reported outcome. 8 questions of the OAB-q LF ask participants how well they have coped with their bladder symptoms during the previous week, as a measure of quality of life. Each question has a response ranging from not coping (= 1) to coping well (= 6). These questions make up the coping scale. The raw score (sum of question scores \[ranging from 8 to 48\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to a higher quality of life, and lower scores represent a lower quality of life. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed. If \< 50% of items were available, the subscore was regarded as missing; however, if ≥ 50% of items were available, the subscore included missing items imputed as the average of the remaining non-missing items for the subscore.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Coping Score From the Overactive Bladder Questionnaire Long Form (OAB-q LF, 1-week Recall) in All OAB Participants12.9 units on a scaleStandard Error 1.32
Vibegron 75 mgCFB at Week 12 in the Coping Score From the Overactive Bladder Questionnaire Long Form (OAB-q LF, 1-week Recall) in All OAB Participants16.5 units on a scaleStandard Error 1.31
Tolterodine ER 4 mgCFB at Week 12 in the Coping Score From the Overactive Bladder Questionnaire Long Form (OAB-q LF, 1-week Recall) in All OAB Participants16.0 units on a scaleStandard Error 1.39
p-value: =0.003995% CI: [1.2, 6]MMRM
p-value: =0.02195% CI: [0.5, 5.7]MMRM
Secondary

CFB at Week 12 in the Health-related Quality of Life (HRQL) Total Score From the OAB-q LF (1-week Recall) in All OAB Participants

The OAB-q LF is a validated patient-reported outcome. The 25 questions comprising the Coping, Concern, Sleep and Social Interaction subscales of the OAB-q LF ask participants how much their symptoms have affected their life over the last week. Each question has a response ranging from None of the time (= 1) to All of the time (= 6). The raw score (sum of question scores for the 4 subscales \[ranging from 25 to 150\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to a higher quality of life, and lower scores represent a lower quality of life. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed. If \< 50% of items were available, the subscore was regarded as missing; however, if ≥ 50% of items were available, the subscore included missing items imputed as the average of the remaining non-missing items for the subscore.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Health-related Quality of Life (HRQL) Total Score From the OAB-q LF (1-week Recall) in All OAB Participants10.8 units on a scaleStandard Error 1.13
Vibegron 75 mgCFB at Week 12 in the Health-related Quality of Life (HRQL) Total Score From the OAB-q LF (1-week Recall) in All OAB Participants14.6 units on a scaleStandard Error 1.12
Tolterodine ER 4 mgCFB at Week 12 in the Health-related Quality of Life (HRQL) Total Score From the OAB-q LF (1-week Recall) in All OAB Participants13.7 units on a scaleStandard Error 1.19
p-value: <0.00195% CI: [1.7, 5.8]MMRM
p-value: =0.011495% CI: [0.6, 5.1]MMRM
Secondary

CFB at Week 12 in the Symptom Bother Score From the OAB-q LF (1-week Recall) in All OAB Participants

The OAB-q LF is a validated patient-reported outcome. The first 8 questions of the OAB-q LF ask participants how much they were bothered by their bladder symptoms during the previous week. Each question has a response ranging from Not at all (= 1) to A very great deal (= 6). These questions make up the symptom bother scale. The raw score (sum of question scores \[ranging from 8 to 48\]) is transformed to a unified score, ranging from 0 to 100. Higher scores correspond to the symptoms having a larger bother, and lower scores represent a lower amount of bother due to symptoms. CFB is calculated as the post-BL value minus the BL value. Covariates included in the mixed model for repeated measures were study visit (Weeks 2, 4, 8, and 12), sex, region (U.S./non-U.S.), OAB type (wet/dry), BL score, and treatment by study visit interaction.

Time frame: Baseline; Week 12

Population: FAS. Only participants with evaluable data were analyzed. If \< 50% of items were available, the subscore was regarded as missing; however, if ≥ 50% of items were available, the subscore included missing items imputed as the average of the remaining non-missing items for the subscore.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboCFB at Week 12 in the Symptom Bother Score From the OAB-q LF (1-week Recall) in All OAB Participants-12.8 units on a scaleStandard Error 1.25
Vibegron 75 mgCFB at Week 12 in the Symptom Bother Score From the OAB-q LF (1-week Recall) in All OAB Participants-19.6 units on a scaleStandard Error 1.24
Tolterodine ER 4 mgCFB at Week 12 in the Symptom Bother Score From the OAB-q LF (1-week Recall) in All OAB Participants-17.4 units on a scaleStandard Error 1.31
p-value: <0.000195% CI: [-9.2, -4.6]MMRM
p-value: <0.00195% CI: [-7.1, -2.2]MMRM
Secondary

Percentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12

A micturition/void is defined as Urinated in Toilet as indicated on the PVD. The number of micturitions is defined as the number of times a participant voided in the toilet as indicated on the PVD. A participant was defined as having an average of \< 8 daily micturitions if the arithmetic mean of the number of micturitions per day in the PVD was less than 8 . Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD).

Time frame: Week 12

Population: FAS. Only participants with evaluable data were analyzed.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Unadjusted28.7 percentage of participants
PlaceboPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Adjusted for sex24.8 percentage of participants
Vibegron 75 mgPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Unadjusted40.1 percentage of participants
Vibegron 75 mgPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Adjusted for sex37.2 percentage of participants
Tolterodine ER 4 mgPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Unadjusted35.0 percentage of participants
Tolterodine ER 4 mgPercentage of All OAB Participants With an Average Number of Micturitions < 8 Per 24 Hours at Week 12Adjusted for sex31.6 percentage of participants
p-value: <0.000195% CI: [6.7, 18.1]Cochran-Mantel-Haenszel
p-value: =0.023695% CI: [0.9, 12.8]Cochran-Mantel-Haenszel
Secondary

Percentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12

An urgency episode is defined as the Need to Urinate Immediately as indicated on the PVD. CFB is calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD).

Time frame: Baseline; Week 12

Population: FAS. The multiple imputation method was used for missing values.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Unadjusted38.3 percentage of participants
PlaceboPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Adjusted for sex32.8 percentage of participants
Vibegron 75 mgPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Unadjusted43.2 percentage of participants
Vibegron 75 mgPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Adjusted for sex39.5 percentage of participants
Tolterodine ER 4 mgPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Unadjusted41.2 percentage of participants
Tolterodine ER 4 mgPercentage of All OAB Participants With at Least a 50% Reduction From Baseline in Urgency Episodes Per 24 Hours at Week 12Adjusted for sex36.4 percentage of participants
p-value: =0.023595% CI: [0.9, 12.7]Cochran-Mantel-Haenszel
p-value: =0.2495% CI: [-2.5, 10]Cochran-Mantel-Haenszel
Secondary

Percentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12

The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD).

Time frame: Baseline; Week 12

Population: FAS-I. The multiple imputation method was used for missing values.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted22.5 percentage of participants
PlaceboPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex19.0 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted28.8 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex25.3 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted26.6 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With a 100% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex20.9 percentage of participants
p-value: =0.03695% CI: [0.4, 12.1]Cochran-Mantel-Haenszel
p-value: =0.544795% CI: [-4.1, 7.8]Cochran-Mantel-Haenszel
Secondary

Percentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12

Total incontinence is defined as having any reason for Accidental Urine Leakage and/or Accidental Urine Leakage checked, as indicated on the PVD. It is assumed that if the participant recorded a reason for leakage then the accidental urine leakage occurred. All events marked as having leakage, regardless of cause, or where Accidental Leakage was checked. were used in the analysis. Per 24 hours corresponds to one Diary Day (i.e., time between when the participant got up for the day each morning and time the participant got up for the day the next morning as recorded in the PVD.

Time frame: Baseline; Week 12

Population: FAS-I. Only participants with evaluable data were analyzed. The multiple imputation method was used for missing values.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Unadjusted53.8 percentage of participants
PlaceboPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Adjusted for sex49.9 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Unadjusted64.0 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Adjusted for sex61.6 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Unadjusted66.5 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With at Least a 50% Reduction From Baseline in Total Incontinence Episodes Per 24 Hours at Week 12Adjusted for sex61.5 percentage of participants
p-value: <0.00195% CI: [4.7, 18.6]Cochran-Mantel-Haenszel
p-value: =0.002295% CI: [4.2, 18.9]Cochran-Mantel-Haenszel
Secondary

Percentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12

The number of UUI episodes is defined as the number of times a participant had checked urge as the main reason for the leakage in the PVD, regardless of whether more than one reason for leakage in addition to urge was checked. The average daily number of UUI episodes was calculated using the daily entries in the PVD (which was to be completed prior to each study visit) as the total number of UUI episodes that occurred on a CDD divided by the number of CCDs in the PVD. CFB was calculated as the post-BL value minus the BL value. Per 24 hours corresponds to one Diary Day (i.e., time between when participant got up for the day each morning and time participant got up for the day the next morning as recorded in the PVD).

Time frame: Baseline; Week 12

Population: FAS-I. The multiple imputation method was used for missing values.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted36.8 percentage of participants
PlaceboPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex32.8 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted52.4 percentage of participants
Vibegron 75 mgPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex49.3 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Unadjusted47.6 percentage of participants
Tolterodine ER 4 mgPercentage of OAB Wet Participants With at Least a 75% Reduction From Baseline in UUI Episodes Per 24 Hours at Week 12Adjusted for sex42.2 percentage of participants
p-value: <0.000195% CI: [9.7, 23.4]Cochran-Mantel-Haenszel
p-value: =0.01295% CI: [2.1, 16.7]Cochran-Mantel-Haenszel

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026