Optimizing Overactive Bladder Treatment

Not Applicable

Completed

• Conditions: Overactive Bladder
• Interventions: Other: Matching Lactobacillus Probiotic Placebo Capsule; Other: Lactobacillus Probiotic Capsule

• Registration Number: NCT03904407
• Lead Sponsor: University of North Carolina, Chapel Hill

Brief Summary

Purpose: This is a pilot randomized double-blind placebo controlled trial of anticholinergic or beta-3 agonist medication with or without concomitant probiotic therapy in women initiating medication therapy for overactive bladder (OAB). The aims of this study are to:

1. Explore how concomitant probiotic therapy influences response to medication for OAB in a randomized controlled trial

2. Investigate whether 4 weeks of probiotic therapy alters the urinary microbiome

3. Assess for predictors of response to therapy

Participants: Women 18 years of age or older presenting to the Division of Urogynecology and Reconstructive Pelvic Surgery clinic with OAB/UUI or UUI-predominant mixed incontinence who desire nonsurgical therapy will be eligible for participation.

Procedures (methods): The study will be conducted over a two-year time frame and the primary outcome will be subjective improvement in symptoms as assessed by the Patient Global Impression of Improvement (PGI-I) validated questionnaire at 4 weeks after initiating anticholinergic or beta-3 agonist medication and study drug. The study aims to recruit up to 140 participants randomized in a 1:1 ratio to either concomitant probiotic or placebo medication.

Detailed Description

Overactive bladder (OAB) is a highly prevalent condition that negatively impacts the lives of millions of adults in the United States. Anticholinergic and beta-3 agonist medications are commonly used to treat OAB but compliance is low due to variable efficacy and bothersome side effects. The existence of a urinary microbiome was recently discovered and early investigations have revealed that lower Lactobacillus load is correlated with the presence of OAB symptoms and a poorer response to anticholinergic therapy.

This proposed pilot study is a randomized double-blind placebo-controlled trial (RCT) of concomitant probiotic therapy in women initiating medication therapy for OAB to explore how probiotics influence response to anticholinergic and beta-3 agonist medications, investigate whether probiotic therapy alters the urinary microbiome, and assess for predictors of response to therapy.

Primary Aim: To explore how concomitant probiotic therapy influences response to medication for OAB in a RCT

Secondary Aims:

1. To investigate whether 4 weeks of probiotic therapy alters the urinary microbiome.

2. To assess for predictors of response to therapy

Study Timeline

• Study First Submitted: 2019-04-03
• Study First Submitted QC: 2019-04-03
• Study First Posted: 2019-04-05
• Study Start: 2019-06-01
• Status Verified: 2020-05
• Primary Completion: 2020-05-01
• Study Completion: 2020-05-01
• Last Update Submitted: 2020-05-08
• Last Update Posted: 2020-05-11

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 29

Inclusion Criteria

• Women age ≥ 18 years
• English-speaking
• OAB/UUI or urge-predominant mixed incontinence per the Medical Epidemiologic and Social Aspects of Aging (MESA) questionnaire

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Exclusion Criteria

• Neurogenic bladder or urinary retention (postvoid residual (PVR) >150 mL)
• Probiotic use within the past 4 weeks
• Inflammatory bowel disease or history of bariatric surgery
• Pelvic organ prolapse past the hymen
• Current symptomatic UTI or systemic antibiotic exposure within 4 weeks
• Current treatment for recurrent UTI or history of recurrent UTI in the last 6 months
• Immunosuppressive therapy (i.e., prednisone or chemotherapy)
• Contraindication to anticholinergic or beta-3 agonist medication (including pregnancy)
• Prior neuromodulation therapy for OAB
• Inability or unwillingness to comply with study protocol

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Placebo	Matching Lactobacillus Probiotic Placebo Capsule	Matching Lactobacillus probiotic placebo capsules in addition to a routine-care prescribed anticholinergic or beta-3 agonist medication for 4 weeks.
Probiotic	Lactobacillus Probiotic Capsule	Lactobacillus probiotic capsules in addition to a routine-care prescribed anticholinergic or beta-3 agonist medication for 4 weeks.

Primary Outcome Measures

Name	Time	Method
Number of Participants with Treatment Success Based on the PGI-I Validated Questionnaire Response	4 weeks	Treatment success at 4 weeks after initiation of anticholinergic of beta-3 agonist therapy. Treatment success will be defined as a response of "very much better" or "much better" on the Patient Global Impression of Improvement (PGI-I), which is a single item questionnaire that asks respondents to rate their improvement after undergoing treatment on a 7-point Likert scale ranging from "very much worse" to "very much better." Statistical analysis will be by intention-to-treat for the primary outcome. A chi-square test will be utilized to determine if there is a statistically significant difference between the two cohorts and sensitivity analyses will be performed using logistic regression analysis.

Secondary Outcome Measures

Name	Time	Method
Change in participant's urinary microbiome from baseline to week 4	Baseline, Week 4	Each participants' urinary microbiome composition will be analyzed at baseline and at week 4 to determine changes in the microbiome that occur over the study period. The correlation between changes in the urinary microbiome over 4 weeks and study drug allocation (probiotic vs placebo) will be assessed via Chi-square testing.
Urinary microbiome Lactobacillus correlation with treatment success as defined by PGI-I Validated Questionnaire Response	4 weeks	The correlation between the presence of Lactobacillus in the urine at baseline and treatment success at week 4 will be analyzed via Chi-Square testing to assess for predictors of response to therapy in women (i.e. treatment success or lack of treatment success based on the primary outcome definition of treatment success as above).
OAB-Q SF Change Score	Baseline, Week 4	Individual participant change score on the Overactive Bladder Questionnaire short-form (OAB-q SF) will be compared between the two cohorts by student's t-test. The OAB-q SF is utilized to assess the impact of OAB symptoms on the patient's life, and has been shown to be responsive to reductions in urinary urgency, frequency and incontinence during anticholinergic therapy. The OAB-q SF questionnaire consists of 19 items divided into a 6-item symptom severity (SS) scale and a 13-item health-related quality of life (HRQL) scale, with both scales ranging from 0 to 100. For the OAB-q SS scale a higher score indicates worse symptom severity while for the OAB-q HRQL scale a higher score indicates better quality of life.
TQSM-II Validated Questionnaire Score	Week 4 Visit	Treatment Satisfaction Questionnaire for Medication version 2 (TQSM-II) score, the TQSM-II is comprised of 12 questions assessing treatment satisfaction with medication intended for use with a wide variety of medications and illness conditions that specifically assesses the three most common dimensions on which patients evaluate their medication: effectiveness, side effects of use, and convenience of use. TSQM Scale scores range from 0 to 100 with a higher score indicating better satisfaction with treatment. The TQSM-II score at the week 4 visit will be compared between the two cohorts by student's t-test.
Correlation between race/ethnicity and treatment success as Defined by PGI-I Validated Questionnaire Response	Week 4 Visit	Treatment success will be defined as a response of "very much better" or "much better" on the Patient Global Impression of Improvement (PGI-I), which is a single item questionnaire that asks respondents to rate their improvement after undergoing treatment on a 7-point Likert scale ranging from "very much worse" to "very much better." The correlation between race/ethnicity and treatment response will be analyzed using chi-square or fisher's exact test.
Correlation between OAB medication dose and Lactobacillus Load in the Urinary Microbiome	Week 4	The correlation between the presence of Lactobacillus in the urinary microbiome and dose of OAB medication at 4 weeks (i.e. low dose vs high dose) will be analyzed via Chi-square or fishers exact test.

Trial Locations

Locations (2)

UNC Hillsborough Medical Office Building; 🇺🇸 Hillsborough, North Carolina, United States

UNC Urogynecology and Reconstructive Pelvic Surgery; 🇺🇸 Raleigh, North Carolina, United States