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Completed

NCT Number: NCT03475706

Evaluation of the Efficacy and Safety of Solabegron Tablets for Treatment of Overactive Bladder in Adult Women

This is a Phase 2b, multicenter, randomized, double-blind, placebo-controlled, parallel-group study designed to evaluate the efficacy, safety, and tolerability of solabegron immediate release low dose or high dose tablets, compared to matched placebo, administered twice daily for 12 weeks to adult female subjects with overactive bladder symptoms (frequency, urgency, and predominantly urgency incontinence) for at least 6 months.

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Key information

Age range

18 year–80 year

Sex eligibility

Female

Study type

Interventional

Phase

Phase 2

Primary location

Velicept Investigative Site - Birmingham, Birmingham, Alabama, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult female subjects 18 to 80 years of age, with a ≥ 6-month history of symptoms of overactive bladder including: frequency, urgency, and urgency urinary incontinence. Subjects must provide written informed consent and either be of non-childbearing potential or of childbearing potential meeting specific criteria (e.g., negative pregnancy test, sexual inactivity, acceptable methods of birth control, and use of hormonal contraceptives).

Exclusion criteria

  • Subjects must have no history of pelvic or bladder disease, e.g., Grade 3/4 uterine prolapse, urogenital malignancy within the past 2 years, surgery for stress incontinence or pelvic prolapse repair within the past 6 months, or bladder injections with botulinum toxin at any time.
  • Diabetes insipidus or poorly controlled Type 1 or Type 2 diabetes mellitus
  • Cardiac conditions: prior cardiovascular events or procedures within 6 months of screening; congestive heart failure; abnormal ECG findings, including ECG QT correction interval (QTc) > 470 msec at the Screening Visit; systolic blood pressure ≥ 180 mmHg or diastolic blood pressure ≥100mmHg, or heart rate > 100 beats per minute.
  • Abnormal tests of liver function
  • History of prior infection due to HIV or hepatitis B or hepatitis C virus
  • Allergy or hypersensitivity to solabegron or mirabegron
  • Women of childbearing potential: breastfeeding, pregnant, or actively trying to become pregnant
  • Participation in a trial of an investigational or marketed drug ≤ 30 days prior to the Screening Visit or in any clinical trial of an investigational drug that may affect urinary function within 3 months prior to Screening Visit.
  • Inability to read, understand, or complete study-related materials.

Treatment and study plan

Solabegron immediate release tablets, low dose

Drug

twice daily for 12 weeks.

Solabegron immediate release tablets, high dose

Drug

twice daily for 12 weeks.

Matching Placebo

Drug

twice daily for 12 weeks.

Primary outcomes

  1. Change from Baseline in mean number of micturitions per 24h at Week 12

    Time frame: Micturitions will be assessed prior to randomization and at Week 12 (Visit 6).

    Micturition events will be recorded by subjects in an eDiary using a smartphone device during 3-day diary periods prior to randomization and at 12 weeks.

Secondary outcomes

  1. Urinary Incontinence (1)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in mean number of urgency urinary incontinence episodes per 24h.

  2. Urinary Incontinence (2)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4 and 8

    Percentage change from Baseline in mean number of urgency urinary incontinence episodes per 24h.

  3. Urinary Incontinence (3)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Proportion of subjects with no episodes of urgency urinary incontinence per 24h.

  4. Urinary Incontinence (4)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Proportion of subjects with no episodes of urinary incontinence (urgency or non-urgency) per 24h.

  5. Urinary Incontinence (5)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in total urinary incontinence episodes (urgency and non-urgency) per 24h.

  6. Micturitions (1)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4 and 8

    Change from Baseline in mean number of micturitions per 24h.

  7. Micturitions (2)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Percentage change from Baseline in mean number of micturitions per 24h.

  8. Micturitions (3)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Percentage of subjects with <8 micturitions per 24h.

  9. Micturitions (4)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in mean number of nocturnal voids per 24h.

  10. Urine Void Volume (1)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in average void volume over 24h.

  11. Urine Void Volume (2)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Percentage change from Baseline in average void volume over 24h.

  12. Urine Void Volume (3)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in maximum individual void volume over 24h.

  13. Urine Void Volume (4)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Percentage change from Baseline in maximum individual void volume over 24h.

  14. Urgency (1)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Proportion of subjects with urges with a mean grade of 3 or 4 per 24h.

  15. Urgency (2)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in urgency assessments per 24h associated with micturitions and incontinence.

  16. Patient Reported Outcomes (1)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Patient Perception of Bladder Condition

  17. Patient Reported Outcomes (2)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in Symptom Bother Score (OAB-q short form).

  18. Patient Reported Outcomes (3)

    Time frame: Prior to Randomization (Baseline) and at Weeks 4, 8, and 12

    Change from Baseline in health-related quality of life (OAB-q short form).

Sponsors and collaborators

Lead sponsor

Velicept Therapeutics, Inc.

Industry

Registry information

Official study title

A Phase 2b, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Efficacy and Safety of Oral Solabegron Immediate Release Tablets in the Treatment of Overactive Bladder (OAB) in Adult Female Subjects

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Mar 23, 2018
Registry last updated
Mar 2, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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