Neuromodulating Cortical Regions Involved in Neurogenic Bladder in MS

Not Applicable

Recruiting

• Conditions: Overactive Bladder; Neurogenic Bladder; Multiple Sclerosis
• Interventions: Device: Magstim Rapid2 System

• Registration Number: NCT06072703
• Lead Sponsor: The Methodist Hospital Research Institute

Brief Summary

Neurogenic overactive bladder (NOAB), characterized by urinary frequency, urgency or urgency incontinence symptoms occurring during the storage phase of the bladder, is the most common urinary complaint in multiple sclerosis (MS). Current management options for NOAB in MS have limited efficacy and considerable adverse effects, which underscores the significance of this study and highlights the need for better, less invasive therapies. This novel study investigates brain therapeutic targets that could shift the focus of NOAB management in MS from a bladder-centric focus to brain restoration; specifically modulating the brain regions identified in the prior functional magnetic resonance imagining studies. Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive brain stimulation that can modulate neurons (excite or inhibit) to improve the connectivity of the regions of interest (ROI). The preliminary data demonstrate, for the first time, significant improvement in bladder symptoms in ten women with MS who have voiding dysfunction following multifocal transcranial magnetic stimulation without any treatment-related adverse effects.

This randomized double-blind, sham-controlled single center clinical trial with an optional open-label extension (OLE) phase is designed to evaluate the effects of targeted rTMS in women with MS and NOAB by investigating restorative reorganization of brain function The main purpose of this study is to determine the effects of individualized repetitive Transcranial Magnetic Stimulation (rTMS) for improving overactive bladder symptoms such as urinary frequency and urgency with or without incontinence in individuals with multiple sclerosis (MS). Patients will undergo initial screening that includes a demographics information, physical exam, past medical and surgical history, medication list, urine pregnancy test (female subjects with childbearing potential), and completion of questionnaires to confirm the eligibility of patients. All eligible patients will be required to complete a functional MRI scan followed by locating the regions of interest through neural navigation system and finally receiving 10 treatment sessions.

Since this is a randomized trial, some patients will receive active treatment/ therapy sessions while others will only receive sham or placebo treatments. The total duration to complete all treatment sessions and follow up visits is approximately 4-5 months.

Detailed Description

Neurogenic overactive bladder (NOAB), characterized by urinary frequency, urgency or urgency incontinence symptoms occurring during the storage phase of the bladder, is the most common urinary complaint in multiple sclerosis (MS). Current management options for NOAB in MS have limited efficacy and considerable adverse effects, which underscores the significance of this study and highlights the need for better, less invasive therapies. This novel study investigates brain therapeutic targets that could shift the focus of NOAB management in MS from a bladder-centric focus to brain restoration; specifically modulating the brain regions identified in the prior functional magnetic resonance imagining studies. Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive brain stimulation that can modulate neurons (excite or inhibit) to improve the connectivity of the regions of interest (ROI). The preliminary data demonstrate, for the first time, significant improvement in bladder symptoms in ten women with MS who have voiding dysfunction following multifocal transcranial magnetic stimulation without any treatment-related adverse effects.

This randomized double-blind, sham-controlled single center clinical trial with an optional open-label extension (OLE) phase is designed to evaluate the effects of targeted rTMS in women with MS and NOAB by investigating restorative reorganization of brain function and improvement of urinary frequency, urgency and incontinence.

Investigators hypothesize that cortical alterations in bladder volume sensing and their response to stimulation contribute to NOAB symptoms in MS, and that improving the response to bladder distention (ROI within circuits 1 and 2) with neuronavigated rTMS can restore brain activity and improve symptoms (frequency, urgency, and incontinence). Investigators will test this hypothesis with the following specific aims:

Aim 1: To determine the clinical effects of neuronavigated and multifocal active/sham rTMS in women with MS and NOAB Aim 2: To assess the neuroimaging restorative effects of neuronavigated active/sham rTMS in women with MS and NOAB Aim 3: To assess the long-term safety and therapeutic effects of repeated rTMS in women with MS and NOAB who participate in the OLE phase (which subjects from both groups will be invited to enter at the 3-month follow up).

Efforts to improve the current knowledge of brain contribution to lower urinary tract function and the development of an individualized, noninvasive, and effective treatment modality at the level of the brain will greatly impact the quality of life for individuals with MS and subsequently others with OAB, whether neurogenic or non-neurogenic

Study Timeline

• Study Start: 2023-03-30
• Study First Submitted: 2023-05-11
• Status Verified: 2023-10
• Study First Submitted QC: 2023-10-03
• Study First Posted: 2023-10-10
• Last Update Submitted: 2023-10-16
• Last Update Posted: 2023-10-18
• Primary Completion: 2027-12-31
• Study Completion: 2027-12-31

Recruitment & Eligibility

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

Inclusion Criteria

• Adult women (≥ 18 years of age)
• Clinically stable MS defined as ExpandedDisability Status Score (EDSS) ≤ 7.5without exacerbation worsening in the preceding 6 months prior to study entry
• Neurogenic Lower Urinary Tract Dysfunction symptoms ≥ 3 months with NBSS total ≥ 15
• Individuals with Montreal Cognitive Assessment (MoCA) score >10 will be eligible
• At least one bladder storage symptoms (e.g., urinary frequency, urinary urgency, nocturia with or without incontinence) indicated by OAB -AT≥ 8
• Individuals with active urinary tract infection (UTI) will be treated and will be enrolled after negative urinalysis

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Exclusion Criteria

• Pregnant/planning to become pregnant or nursing
• Urodynamic findings of bladder outlet obstruction
• Baclofen or other intrathecal pumps, Pacemakers.
• History of seizure disorder (SZ), immediate family of SZ disorder, in addition to individuals who are taking any medications such as (bupropion) Wellbutrin or substances (ex: heavy alcohol use) that would lower seizure threshold will be excluded.
• History of bipolar disorder, or individuals who are taking medications that can exacerbate the condition such as tricyclic antidepressants, selective serotonin reuptake inhibitors, serotonin-nor-epinephrine reuptake inhibitors, anti-psychotics, lithium, bupropion (Wellbutrin) and antihistamines will be excluded.
• All intracranial lesions and hemorrhagic stroke will be excluded
• History of moderate to severe heart disease or unstable angina
• History of Autonomic Dysreflexia
• History of interstitial cystitis, pelvic radiation
• Intra-detrusor botulinumtoxinA (BTX-A) injection over the past 6 months
• Incarcerated patients will be excluded.
• Active sacral nerve stimulation (SNS) device or any other spinal stimulators
• Indwelling urethral or suprapubic catheter

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Active rTMS	Magstim Rapid2 System	1 Hz (LF) and 10 Hz (HF) rTMS stimulation will be delivered at 90% of the resting motor threshold for 40 min each week day for two weeks.
Sham rTMS	Magstim Rapid2 System	Low-frequency (1Hz) active rTMS stimulation will be delivered with an inert "sham" stimulation coil for 40 min each week day for two weeks.

Primary Outcome Measures

Name	Time	Method
Changes on patient reported outcomes following treatment - 2 day bladder diary	Baseline, 1 week after, 1 month after and 3 months after rTMS treatment	Here the investigators evaluate changes on the number of times that symptoms associated with neurogenic overactive bladder occur in a 24hr period after rTMS treatment. Reported outcomes by patients include the number of times the following occur: voids, nocturia, severe urgency episodes, and urgency urinary incontinence episodes.
Changes in subjective clinical outcomes following treatment - Neurogenic Bladder Symptom Score (NBSS) Questionnaire	Baseline, 1 week after, 1 month after and 3 months after rTMS treatment	The subjective clinical assessment includes changes in validated questionnaires. This assessment has 24 questions that measure bladder symptoms across 3 different domains: incontinence (score range: 0-29), storage and voiding (score range: 0-22), and consequences (score range: 0-23); the highest score is associated with worse symptoms. The last question focuses on quality of life scored from 0 (pleased) to 4 (unhappy). The investigators report raw scores here for all domains and QoL.

Secondary Outcome Measures

Name	Time	Method
Changes in %Post-Void Residual/Bladder Capacity (PVR/BC) following treatment	Baseline, 1 week after, 1 month after and 3 months after rTMS treatment	Percentage of PVR in proportion to the bladder capacity will be measured before the intervention and post intervention at 1 and 3 months follow up and will be compared between active and sham neurostimulation groups
Changes in brain activation patterns following rTMS treatment - functional MRI imaging	Baseline and 1 week after rTMS treatment	Effect of rTMS treatment in increasing/decreasing activation in ROIs known to be involved in bladder function measured by changes in blood-oxygen-level-dependent (BOLD) signal.
Changes in objective clinical outcomes following treatment - Bladder Capacity	Baseline, 1 week after, 1 month after and 3 months after rTMS treatment	The objective clinical assessment includes changes in bladder capacity (mL), which is assessed by collecting both post void residual (PVR) and voided volume (both in mL) in participants after treatment as compared to baseline.

Trial Locations

Locations (1)

Houston Methodist Hospital; 🇺🇸 Houston, Texas, United States