Urodynamic and Clinical Efficacy of Mirabegron for Neurogenic Bladder Patients

A Double Blind, Randomized Placebo Controlled Trial Evaluating the Urodynamic and Clinical Efficacy of Mirabegron Among Neurogenic Bladder Patients

The proposed study is a randomized, double blind placebo controlled multicenter study to determine the effectiveness of mirabegron in the treatment of neurogenic bladder dysfunction. Patients will be randomized into one of two trial arms: mirabegron 25mg for two weeks, with escalation to 50mg for the remaining 8 weeks, or matched placebo capsule for two weeks, with placebo escalation for the remaining 8 weeks. Each of these trial arms will be stratified based on whether the patient is already taking an anticholinergic medication or not. The study will treat a total of 144 patients (72 with placebo, 72 with mirabegron). The study hypothesis is that mirabegron will result in a statistically superior (increased) urodynamic bladder capacity.

The study duration is 12 weeks, with a 1-4 week run in period where no active or placebo treatment will be administered. The primary outcome measure will be based on an increase in urodynamic bladder capacity. Secondary outcome measures will be additional urodynamic parameters, urinary symptom scales, urinary quality of life indices, and voiding diary results.

Patients who are over 18 years of age with a diagnosis of multiple sclerosis (MS) or spinal cord injury (SCI) will be eligible to participate. All eligible patients will have urodynamic studies performed within 4 weeks of trial enrollment, and at the end of study (week 9-10). Adverse events and study outcomes will be assessed at predefined study time points.

Study Overview

• Status: Terminated
• Conditions: Urinary Bladder, Neurogenic
• Intervention / Treatment: Drug: Mirabegron; Drug: Placebo

• Study Type: Interventional
• Enrollment (Actual): 32
• Phase: Phase 2; Phase 3

Contacts and Locations

Study Locations

• Canada
  • Manitoba
    • Winnipeg, Manitoba, Canada, R3A 1M4
      • Rehabiliation Center, Health Sciences Center
  • Ontario
    • Kingston, Ontario, Canada, K7L 5G2
      • Kingston General Hospital and Hotel Dieu Hospital (Queens University)
    • London, Ontario, Canada, N6A 4V2
      • Western University
    • Ottawa, Ontario, Canada, K1Y 4E9
      • University of Ottawa
    • Toronto, Ontario, Canada, M5T 2S8
      • Toronto Western Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion criteria:

• Diagnosis of traumatic or nontraumatic suprasacral spinal cord injury (SCI) or multiple sclerosis (MS, based on a neurologist assessment and/or the McDonald criteria)(28)
• Age >18 years
• Stable method of bladder management for >3months (either spontaneous or provoked voiding, or intermittent catheterization).
• Bothersome urinary symptoms (urinary frequency, urgency, or urgency incontinence based on standard ICS definitions(29)) and completed 3 day voiding diary demonstrating at least 1 episode of non-stress based urinary incontinence over the 72hr period (this may be urgency based incontinence or unaware incontinence).
• Patient is able to read and speak English

Exclusion criteria:

Based on Screening visit history:

• Participation in another drug or device study in the 60 days prior to the screening visit.
• Previous urologic surgery: Transurethral prostatectomy, bladder augmentation, sphincterotomy, bladder neck sling, artificial urinary sphincter, catheterizable channel, implantable electrostimulator/neuromodulator
• Current use of suprapubic catheter/foley catheter
• Unstable cardiac disease (uncontrolled hypertension, myocardial infarction, unstable angina, severe congestive heart failure (NYHA 3 or 4), ventricular arrhythmia (such as torsades de pointes), or stroke within the last 6 months)
• Clinically significant abnormal ECG
• The investigator believes the patient has an increased risk of QT prolongation (based on review of the screening ECG and patients concurrent medications)
• History of significant renal dysfunction within 1 year, or serum creatinine >150umol/L at screening visit (visit 1).
• History of significant liver disease within 1 year, or serum AST/ALT >2 times upper limit of normal, GGT >3 times upper limit of normal, total bilirubin >2 times upper limit of normal at screening visit (visit 1).
• History of pelvic radiation
• History of bladder cancer
• History of a concurrent malignancy or cancer (except noninvasive skin cancer) within the last 5 years. Subjects with a history of cancer are considered eligible if the subject has undergone potentially curative therapy and the subject has been considered disease free for at least 5 years (with the exception of basal cell or squamous cell carcinoma of the skin).
• Patient has a history of interstitial cystitis/pelvic pain syndrome
• Patient has a history of acute or chronic urinary retention within the last 3 months, and is currently not using intermittent catheters
• Patient has a history of a tachyarrhythmia
• Patient has a history of glaucoma
• Patient has a medical condition that may cause noncompliance with the study protocol
• In the opinion of the Investigator the patient has a history of significant stress urinary incontinence

• Patient has signs and symptoms of an active urinary tract infection (symptoms of dysuria, foul smelling urine, cloudy urine, increased spasticity, increased autonomic dysreflexia, self reported fever, increased incontinence, back/suprapubic pain).

  o Patient will submit urine for culture and sensitivity, undergo treatment, and will be eligible for rescreening after treatment.

• Female patient who is pregnant or breastfeeding, or plans to become pregnant.
• Male patient who is planning on fathering a child during the study or for 28 days after the last dose of study drug, or who is planning to donate sperm
• Patient refuses to provide written consent
• Patient will be unable or unwilling to complete the questionnaires and study visits
• In the opinion of the study investigator, it is not in the patient's best interest to be enrolled in this study.

Based on medication and allergy review

• The new addition of an anticholinergic medication, or a change to anticholinergic dose, within the last 30 days, (bladder specific anticholinergics include oxybutynin, tolterodine, fesoterodine, solifenacin, darifenacin, trospium, hyoscine, oxybutynin gel or patch, atropine, benzatropine). If previously used and discontinued, these medications must have been stopped for >2 weeks
• Newly added bladder active medication (or dose change) within the last 2 months (Tamsulosin, Silodosin, Terazosin, Baclofen, Diazepam, amitriptyline, Finasteride, Dutasteride, DDAVP/desmopressin)
• Use of flecainide, propafenone, donepezil, thioridazine, tramadol, aripiprazole, desipramine, imipramine, venlafaxine or digoxin
• Intravesical onabotulinum toxin use within the last 1 year
• Intravesical oxybutynin within the last 3 months
• Patient has a previous history of treatment with mirabegron
• Patient has a known allergy to mirabegron or a previous adverse reaction to a beta 3 agonist.

Based on physical exam

• Patient has a postvoid residual > 250mL at study enrollment after repeated tested (1 attempt to re-void to ensure complete emptying of the bladder) and is not using intermittent catheters
• Patient has a resting BP >180 mmHg systolic and/or >110 mmHg diastolic after 2 minutes of sitting quietly
• Patient has a resting heart rate >100bpm after 2 minutes of sitting quietly
• In the opinion of the study investigator, it is not in the patient's best interest to be enrolled in this study based on a clinically significant abnormality on physical exam.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Mirabegron; Patients randomised to this arm start with mirabegron 25mg PO daily for two weeks, and then at 2 weeks titrate to 50mg PO daily, and maintain that dose for the duration of the study (8 additional weeks).	Drug: Mirabegron; Mirabegron 25mg PO daily for 2 weeks, with dose increase to Mirabegron 50mg PO daily for the remaining 8 weeks.; Other Names: MYRBETRIQ
Placebo Comparator: Placebo; Inert placebo pill, matching active treatment pill.	Drug: Placebo; Matched placebo capsules to the intervention arm

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Bladder Capacity	Urodynamic bladder capacity	10 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
3 Day Voiding Diary	The 3 day voiding diary is a simple patient maintained record of fluid intake, voided volume and incontinence episodes. This will be used to assess number of episodes of urgency incontinence, urinary frequency, longest time between voids, functional capacity, and mean voided volume	10 weeks
24hr Urinary Pad Weights	This will determine the amount of urinary incontinence that occurs over a 24hr period.	10 weeks
Quality of Life (Bladder Specific)	The Short Form-Qualiveen is a urinary specific quality of life measure developed and studied specifically for neurogenic bladder patients; validity, reliability and responsiveness have been established.	10 weeks
Quality of Life (Incontinence)	The I-QOL is an incontinence specific quality of life tool that has been shown to be a valid, reliable and responsive measurement among patients with neurogenic bladder dysfunction	10 weeks
Patient Reported Outcome Measure-NBSS	The Neurogenic bladder symptom score (NBSS) is a symptom specific measure of urinary symptoms developed for patients with neurogenic bladder dysfunction with demonstrated validity and reliability. Minimum score is 0, maximum score is 74. Higher score is worse neurogenic bladder symptoms.	10 weeks
Patient Perception of Bladder Condition	The patient perception of bladder condition is a commonly used measure in the assessment of oral medications for the treatment of overactive bladder symptoms	10 weeks
Adverse Events	Adverse events will be monitored passively. They will be actively monitored for hypertension, tachycardia, and urinary retention.	10 weeks
Secondary Urodynamic Characteristics: Maximum Detrusor Pressure		10 weeks
Secondary Urodynamic Characteristics: Volume at Maximum Detrusor Pressure		10 weeks
Secondary Urodynamic Characteristics: Bladder Sensation		10 weeks
Secondary Urodynamic Characteristics: Bladder Compliance		10 weeks
Secondary Urodynamic Characteristics: Volume at First Detrusor Overactivity		10 weeks

Collaborators and Investigators

• Sponsor: Lawson Health Research Institute
• Investigators: Principal Investigator: Blayne Welk, MD MSc, Western University

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2014
• Primary Completion (Actual): January 1, 2018
• Study Completion (Actual): February 1, 2018

Study Registration Dates

• First Submitted: January 22, 2014
• First Submitted That Met QC Criteria: January 23, 2014
• First Posted (Estimate): January 24, 2014

Study Record Updates

• Last Update Posted (Actual): February 5, 2019
• Last Update Submitted That Met QC Criteria: January 15, 2019
• Last Verified: January 1, 2019

More Information

Terms related to this study

• Keywords: Multiple Sclerosis; Urodynamics; mirabegron; Spinal Cord Injuries
• Additional Relevant MeSH Terms: Nervous System Diseases; Urologic Diseases; Urinary Bladder Diseases; Neurologic Manifestations; Urinary Bladder, Neurogenic; Physiological Effects of Drugs; Adrenergic Agents; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Urological Agents; Adrenergic Agonists; Adrenergic beta-Agonists; Adrenergic beta-3 Receptor Agonists; Mirabegron
• Other Study ID Numbers: SG193