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Overactive BladderPhase 3MirabegronNCT02468830

Pilot Study of Mirabegron in Pediatric Patients With Overactive Bladder

A Phase 3 study testing mirabegron in people with Overactive Bladder and Urinary Incontinence, run by CHU de Quebec-Universite Laval.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The objective is to evaluate the efficacy and safety of mirabegron to treat urinary incontinence in children with Overactive Bladder that are refractory and/or intolerant to antimuscarinics. Read more about this study

Who is it for?
Ages 5 to 17 years
Conditions the study is for
Overactive Bladder, Urinary Incontinence
What is being tested?
mirabegron
Could I receive a placebo?
No, everyone receives an active treatment
How many people
58 participants
Where
No sites listed yet
Study dates
Apr 2013to Mar 2016
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 5 to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Male or female ≥ 5 years old and ≤17 years old
  • OAB diagnostic according to the International Children Continence Society (ICCS) and less than 65% of the expected mean bladder capacity for age is confirmed (30 + (age in years x 30) mL) on a 3-day voiding diary.
  • Weight and height are within the normal percentile (3rd to 97th percentile) and weight is ≥ 20 kg (3rd percentile of a 8 y.o. child, boy or girl), according to the CDC growth chart
  • Ability to swallow pills
  • Subjects/parents (vs. legal guardian) agree to participate to the following study and sign the informed consent
  • Subjects/parents (vs. legal guardian) are able to comply with the study requirements and with the medication restrictions.
  • Female subjects of childbearing potential must have a negative serum or urine pregnancy test at enrollment and must agree to maintain highly effective birth control during the study. Sexually active male subjects agree to use a barrier method of birth control with female partner for the duration of the study and at least one month after ending study treatment. Sexually active male subjects agree to use a condom for the duration of the study and for at least one month after ending study treatment and the female partner to use a reliable form of birth control for the duration of the study and for at least one month after ending study treatment.
  • Patients without symptom improvement or with partial response under medical therapy (at least 2 different antimuscarinic agents) or with significantly bothersome S/E on antimuscarinics.

Who cannot join

  • Subject has a diagnostic of dysfunctional voiding
  • Post-voiding residue > 20 cc
  • Polyuria (> 75 ml/kg/b.w./24 hours)
  • Nephrogenic of central diabetes insipidus
  • Constipation at screening (if the patient is treated and the treatment is successful, the patient will be eligible to the study)
  • Urinary tract infection at visit 2-3-4. If UTI is present at the screening visit, the UTI must be treated and the success of the treatment must be documented with a negative urinalysis at visit 2.
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  • QTc interval greater than 460 ms, or any increase of 30 ms on follow-up EKG (mean of 6 separate EKG-3 from visit week-2 and 3 from visit week 0). If a patient meets those criteria in the first month (initial dose), he will be excluded from the study. If the QTc change is noted after the up-titration, the dose will be decreased and EKG will be repeated within 1 week to ensure normalization of QTc.
  • Clinically significant unstable medical condition or disorder
  • Subject is pregnant or intends to become pregnant
  • Serum creatinin more than or equal to 2 times the upper limit of normal
  • Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) more than or equal to 2 times ULN, or bilirubin more than or equal to 1.5 times ULN.
  • Known hypersensitivity to mirabegron or any contraindication to the use of the molecule, in accordance to the product monography (to the exception of pediatric age).
  • Subject is taking medication that interact with mirabegron and this medication can't be discontinued (see appendix 1 of excluded drugs)
  • Known urological pathology other than OAB that could explain urinary symptoms (as bladder stone…)
  • Non-treated or non-controlled arterial hypertension

About this study

Official title: Prospective Pilot Study of Mirabegron in Pediatric Patients With Overactive Bladder

The objective is to evaluate the efficacy and safety of mirabegron to treat urinary incontinence in children with Overactive Bladder that are refractory and/or intolerant to antimuscarinics.

Read the detailed description

Overactive bladder (OAB) is a highly prevalent disorder in the pediatric population. This condition comprises many urinary symptoms, such as urgency, increased daytime frequency of micturition, urge incontinence and nocturia. These symptoms are especially troublesome for the pediatric patients and their family since it causes embarrassment and it limits everyday activities and impairs children's development. Furthermore, serious complications are seen if this condition is not treated properly, as urinary tract infection, vesico-ureteral reflux and dysfunctional voiding. Antimuscarinic agents are the current pharmacologic mainstay for OAB. Many side effects are reported with the clinical use of antimuscarinics. Oxybutynin is the most widely antimuscarinic agent used in the pediatric population and is the only molecule approved by Health Canada for children with OAB. However, some patients have a suboptimal response to antimuscarinic and many experience side effects. Children with OAB therefore represent a disease population with a need for an alternative effective, safe and well-tolerated therapy to help manage the overactive detrusor, reducing or preventing incontinence.

Mirabegron, a β3-adrenoceptor (β3-AR) agonist approved for the treatment of OAB symptoms in the adult population, is the first of a new class of compounds with a different mechanism of action. The recommended starting dose of mirabegron is 25mg, which can be increased to 50mg, based on individual efficacy and tolerability. Side effects commonly reported with antimuscarinics were not observed more often with mirabegron than with placebo (headache 2.0%, dry mouth 2.0%, constipation 1.6%). Several Phase II and III studies have shown significant improvement in clinical OAB symptoms in adults treated with mirabegron with a favorable tolerability profile. Mirabegron has not been studied yet for pediatric patients and no recommendation with regards to its use has been issued by the manufacturer nor medical regulatory bodies.

A prospective open-label study, using an adjusted-dose regimen of mirabegron (25-50mg), including pediatric patients with refractory urinary incontinence due to OAB. This protocol was approved by the investigators' research ethics board. Patients without symptom improvement or with partial response under intensive behavioural protocol and medical therapy (at least 2 different antimuscarinic agents) will be recruited. Patients with significantly bothersome S/E on antimuscarinics are also included. primary end-point is efficacy toward urinary continence and secondary end-points are tolerability and safety. The patients/parents satisfaction will also be recorded.

After 8 to 12 weeks on the new medication, the possibility of up-titration will be assessed. Patients and parents will be questioned on compliance, tolerability and efficacy. If the patient is taking the medication ≥80% of the time, does not have any significant side effects and still has significant OAB symptoms, the investigators will offer a dose increase (Mirabegron 50mg daily). If accepted, the medication will be provided with instructions to report any new side effects.

Subjects will complete a 3-day voiding diary prior to each medical visit to assess the efficacy of the treatment and urotherapy. Visits will be done every 3 months.

Being tested
mirabegron
Keywords
mirabegron, antimuscarinics, beta 3 agonist, overactive bladder, children
Medical subject headings
Urinary Bladder, Overactive, Urinary Incontinence

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • mirabegronDrug

    Also called Myrbetriq

    Switch treatment from antimuscarinic to study medication. A dose up-titration will be possible if well tolerated and sub-optimal efficacy.

Study groups in NCT02468830
Study groupRoleWhat they receive
MirabegronExperimentalPatients without symptom improvement or with partial response under intensive behavioural protocol and medical therapy (at least 2 different antimuscarinic agents) will be recruited. Patients with significantly bothersome S/E on antimuscarinics will also be included.
Receives: Drug: mirabegron

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Improved Overactive Bladder Symptoms as a Measure of Efficacy of Mirabegron

    Percent change in the frequency of urinary incontinence episodes as a Measure of Efficacy.

    Measured: Participants will be followed for the duration of the study, up to 52 weeks

  2. Improved Overactive Bladder Symptoms as a Measure of Efficacy of Mirabegron

    Change in mean bladder capacity from baseline to final visit based on voiding diary.

    Measured: Participants will be followed for duration of the study, up to 52 weeks

Secondary outcomes (3)
  1. Number of Participants With Cardio Vascular Safety

    Cardiovascular safety: mean difference in blood pressure (Variation in blood pressure: systolic ±20 mmHg, diastolic ±15 mmHg).

    Parameters to be measure at each visit but particularly at visit 2 (Week 0, first dose on site), to be obtained before and 1 hour after taking the medication).

    Measured: Participants will be followed for the duration of the study, up to 52 weeks

  2. Improved Quality of Life Using the Patient Perception of Bladder Condition (PPBC) Scale

    The Patient Perception of Bladder Condition (PPBC) scale on a 6-point score scale at baseline and final visit.

    Explanation of possible answer:

    1. does not cause me any problems at all,
    2. causes me some very minor problems,
    3. causes me some minor problems,
    4. causes me (some) moderate problems,
    5. causes me severe problems,
    6. causes me many severe problems

    Measured: Participants will be followed for the duration of the study, up to 52 weeks

  3. Number of Participants With Adverse Events as a Measure of Safety and Tolerability of Mirabegron

    Cardiovascular safety: mean difference in heart rate (variation in heart rate increase of more than 20%). Heart rate was taken at initiation of study drug, at each visit and at the study end.

    Measured: Participants will be followed for the duration of the study, up to 52 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jun 2015 (estimated)
  2. Study startApr 2013
  3. Primary completionJan 2016
  4. Study completionMar 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
58 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02468830
Sponsor's protocol ID
B14-06-1998
Acronym
Mirabegron
Status last verified
Jun 2018
First submitted
30 May 2015
Last updated
20 Jun 2018
Data monitoring committee
Yes
Individual data sharing
Yes: Publication submitted

Publications

  • Blais AS, Nadeau G, Moore K, Genois L, Bolduc S. Prospective Pilot Study of Mirabegron in Pediatric Patients with Overactive Bladder. Eur Urol. 2016 Jul;70(1):9-13. doi: 10.1016/j.eururo.2016.02.007. Epub 2016 Feb 11.

    PubMed 26876327

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing mirabegron in people with Overactive Bladder and Urinary Incontinence, run by CHU de Quebec-Universite Laval.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 20 Jun 2018. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 20 Jun 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Improved Overactive Bladder Symptoms as a Measure of Efficacy of Mirabegron (time frame: Participants will be followed for the duration of the study, up to 52 weeks). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02468830, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Jun 2018.

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