Title

Study of Topically Administered Oxybutynin Gel in Patients With Urge Incontinence
A Double-Blind, Randomized, Parallel, Placebo-Controlled, Multicenter Study Evaluating the Effect of Treatment With Topically Administered Oxybutynin Gel in Patients With Urinary Frequency, and Urge and Mixed Urinary Incontinence With a Predominance of Urge Incontinence Episodes With an Open-Label Extension
  • Phase

    Phase 3
  • Study Type

    Interventional
  • Intervention/Treatment

    oxybutynin ...
  • Study Participants

    626
The primary objective of the double-blind phase of the study is to compare the effects of two doses of oxybutynin gel to placebo gel. The objective of the open-label extension is to evaluate the extended safety and skin-irritation profile of topically administered oxybutynin gel.

The hypothesis is that topically administered oxybutynin gel will decrease (compared to placebo) the number of incontinence episodes per week, average daily urinary frequency, and urinary urgency; increase average urinary void volume; and improve patient quality of life.
Study Started
Mar 31
2009
Primary Completion
Jul 31
2010
Study Completion
Nov 30
2010
Results Posted
Jan 19
2011
Estimate
Last Update
Jul 02
2014
Estimate

Drug Oxybutynin

Oxybutynin Gel. Transdermal gel was applied once-daily (in the morning) during 12 weeks of treatment. Evaluation: reduction of incontinent episodes (baseline vs 12 weeks); comparison 56 resp. 84 mg vs placebo

  • Other names: Anturol; Oxybutynin Gel 3%

Drug Placebo

Placebo Gel Oxybutynin Gel. Transdermal gel was applied once-daily (in the morning) during 12 weeks of treatment. Evaluation: reduction of incontinent episodes (baseline vs 12 weeks); comparison 56 resp. 84 mg vs placebo

  • Other names: Anturol; Oxybutynin Gel 3%

Oxybutynin Gel 56 mg/day Experimental

Oxybutynin Gel 84 mg/day Experimental

Placebo Gel Placebo Comparator

Criteria

Inclusion Criteria:

Overactive bladder (OAB) symptoms of urge and/or mixed UI with a predominance of urge incontinence for at least 3 months
Have a history of at least 1 - 2 urge episodes and 8 or more voids per day

Exclusion Criteria:

Incontinence that is predominantly stress, insensate, or overflow in nature, or incontinence related to chronic illness, anatomical weakness/abnormalities or concomitant medications
PVR volume > 200 mL or relative PVR > 50% of pre-void volume as determined by bladder ultrasound
History of urinary retention, gastric retention, or uncontrollable narrow-angle glaucoma, or patients who are at risk for these conditions

Summary

Oxybutynin Gel 56 mg/Day

Oxybutynin Gel 84 mg/Day

Placebo Gel

All Events

Event Type Organ System Event Term Oxybutynin Gel 56 mg/Day Oxybutynin Gel 84 mg/Day Placebo Gel

Change From Baseline in Mean Weekly Frequency of Urinary Incontinence Episodes at Week 12

Reduction in number of incontinent episodes, evaluated as mITT (modified intention to treat), after 12 weeks of treatment compared to baseline.

Oxybutynin Gel 56 mg/Day

-24.8
Episodes (Mean)
Standard Deviation: 28.7

Oxybutynin Gel 84 mg/Day

-21.9
Episodes (Mean)
Standard Deviation: 25.1

Placebo Gel

-20.0
Episodes (Mean)
Standard Deviation: 27.0

Total

626
Participants

Age, Continuous

58.8
years (Mean)
Standard Deviation: 13.1

Number of incontinent episodes at baseline

46.5
Episodes (Mean)
Standard Deviation: 29.3

Age, Categorical

Region of Enrollment

Sex: Female, Male

Overall Study

Oxybutynin Gel 56 mg/Day

Oxybutynin Gel 84 mg/Day

Placebo Gel

Drop/Withdrawal Reasons

Oxybutynin Gel 56 mg/Day

Oxybutynin Gel 84 mg/Day

Placebo Gel