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Zapping the brain to calm an overactive bladder?

NCT ID NCT07768137

Symptom relief Sponsor: The Hong Kong Polytechnic University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 17, 2026 · Last updated Aug 21, 2026 · Updated 2 times

Summary

This trial tests whether a gentle brain stimulation technique called transcranial direct current stimulation (tDCS) can improve bladder control in people who have had a stroke. Participants will receive either real or sham tDCS alongside standard pelvic floor muscle training, three times a week for eight weeks. The goal is to see if this combination is feasible and helps reduce overactive bladder symptoms, which are common and distressing after a stroke.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Transcranial direct current stimulation (tDCS), a non-invasive brain stimulation device, combined with pelvic floor muscle training
What this could lead to
If it works, this could offer a drug-free way to ease bladder control problems after a stroke, improving quality of life without medication side effects.
What could go wrong
This is a small pilot study, so results may not be definitive. The stimulation is experimental, and its benefits for bladder symptoms are not yet proven.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 60 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged between 18-80 years with onset of stroke within one and twelve months of enrollment and having overactive bladder (OAB) symptoms; * Experiencing moderate (scoring 6-11 points on the Overactive Bladder Symptom Score \[OABSS\]) to severe OAB (scoring ≥ 12 points on OABSS); * Obtaining a Mini-Mental State Examination (MMSE) score of ≥ 24. Exclusion Criteria: * Presence of metallic implants in the cranium, intracardiac lines, increased intracranial pressure, cardiac pacemaker, cochlear implants, tumour, and skull abnormalities; * Family history of epilepsy/seizures; * Contraindications to transcranial magnetic stimulation.

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Conditions

The condition(s) this trial relates to.

overactive bladder stroke disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Neurogenic overactive bladder Stroke

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • The Hong Kong Polytechnic University

    Hong Kong, Hong Kong, 999077, China

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