Efficacy of Solifenacin, Mirabegron and Combination Therapy in Children with Daytime Urinary Incontinence (BeDry)

Last updated: January 10, 2025
Sponsor: University of Aarhus
Overall Status: Active - Recruiting

Phase

3

Condition

Urinary Incontinence

Enuresis

Treatment

Mirabegron

Solifenacin

Clinical Study ID

NCT06551246
BeDry
  • Ages 5-14
  • All Genders

Study Summary

The primary objective is to evaluate if (1) combination therapy of solifenacin and mirabegron in low doses is superior to monotherapy of solifenacin in high dose and if (2) combination therapy of mirabegron and solifenacin in low doses is superior to monotherapy of mirabegron in high dose in treatment of daytime urinary incontinence among children aged 5 to 14 years who are none complete responders to respectively monotherapy of solifenacin in low dose or monotherapy of mirabegron in low dose.

In total, 236 children diagnosed with daytime urinary incontinence will be randomized 1:1:1:1 to one of four treatment groups. Total pharmacological treatment period will be 18 weeks.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  1. The participants custody holder(s) must voluntarily sign and date an informedconsent prior to initiation of any study specific procedures.

  2. Age 5 to 14 years (inclusive) at the time of inclusion.

  3. Overactive bladder as per International Children's Continence Society criteria

  4. At least 2 daytime urinary incontinence episodes per week

  5. Inadequate effect of at least 4 weeks urotherapy (non-pharmacological treatment)

  6. No previous treatment with solifenacin, mirabegron or bladder/sphincter botulinumtoxin injections

  7. No current constipation as per ROME IV criteria or fecal incontinence (laxativetreatment is accepted)

  8. Per investigator's judgment, the participant can swallow or can learn to swallowstudy medication

Exclusion

Exclusion Criteria:

  1. Inability of the patent(s) or legal guardian(s) to understand the Danish written andoral information

  2. Known or suspected hypersensitivity to study medication

  3. Any contraindication to the use of the study medication

  4. Known urogenital anatomical abnormalities affecting lower urinary tract function

  5. Known kidney or bladder stones

  6. Known diabetes insipidus

  7. Ongoing symptomatic urinary tract infection

  8. Recurrent urinary tract infection or ongoing prophylactic antibiotic treatment

  9. Known QTc prolongation, QTc >460 ms, or risk of QTc prolongation (hypokalaemia,exercise-induced syncope, or familial long QT syndrome)

  10. Other significant electrocardiogram abnormalities

  11. Known hypertension

  12. ≤3 daily voiding, evaluated by 48-hour frequency-volume chart

  13. Uroflowmetry suggestive of other pathology than overactive bladder (staccato-shaped,interrupted-shaped, or plateau-shaped curve)

  14. Post-void residual >50 ml after double voiding

  15. Dipstick haematuria (≥2+ erythrocytes) or macroscopic haematuria

  16. Pregnancy or breastfeeding

  17. Female subjects of childbearing potential

  18. Ongoing constipation according to Rome IV-criteria which is intractable tomedication or fecal incontinence

  19. Inability to swallow study medication

  20. Use of any medication during study period, except permitted medication

Study Design

Total Participants: 236
Treatment Group(s): 2
Primary Treatment: Mirabegron
Phase: 3
Study Start date:
June 27, 2024
Estimated Completion Date:
December 01, 2027

Study Description

Background: According to International Children's Continence Society, first-line treatment of children with daytime urinary incontinence is standard urotherapy, eventually followed by pharmacotherapy of anticholinergics. The effect of medical treatment is sparsely investigated and primarily in non-randomized trials.

Objectives: The primary objective is to evaluate if (1) combination therapy of solifenacin and mirabegron in low doses is superior to monotherapy of solifenacin in high dose and if (2) combination therapy of mirabegron and solifenacin in low doses is superior to monotherapy of mirabegron in high dose in treatment of daytime urinary incontinence among children aged 5 to 14 years who are none complete responders to respectively monotherapy of solifenacin in low dose or monotherapy of mirabegron in low dose.

The secondary objective is to evaluate the treatment response of combination therapy of solifenacin and mirabegron in low doses, monotherapy in high dose and monotherapy in low doses as supplementary comparisons. Additionally, the secondary objective is to evaluate side effects, safety, and tolerability of the medical treatment as well as the effect of treatment on well-being and quality of life.

Study design: The BeDry study is designed as a multicenter, randomized, single-blinded, controlled clinical trial. Included children will be randomized 1:1:1:1 to one of four treatment groups. Children aged 5-14 years diagnosed with daytime urinary incontinence refractory to standard urotherapy will be randomized. Initially two groups will receive solifenacin 5 mg and two groups will receive mirabegron 25 mg. After 6 weeks, non-complete respondsers will receive add-on treatment according to their primary randomization group; group 1A will reviece solifenacin 5 mg and add-on solifenacin 5 mg, group 1B will receive solifenacin 5 mg and add-on mirabegron 25 mg, group 2A will receive mirabegron 25 mg and add-on mirabegron 25 mg, group 2B will receive mirabegron 25 mg and add-on solifenacin 5 mg. Total treatment period will be 18 weeks. The primary endpoint measure is treatment response assessed by change from visit 2 to end of study, according to number of wet days pr. 7 days by DryPie.

Perspectives: The trial has the potential to optimize medical treatment of children with daytime urinary incontinence, to shorten the treatment period, diminish side effects and minimized unnecessary medical expenses.

Ethics: All pharmacological side effects will be handled in accordance with the Danish legislation. No risk or unknown side effects are expected to urotherapy, medical treatment or withdrawal. No risks are expected by the clinical examination and paraclinical measurements. The therapeutic potential for future patients justifies the project to be carried out. Participation in this study will not lead to any disadvantages for the patient in their treatment. The study will be conducted in accordance with the protocol, applicable regulatory requirements according to Good Clinical Practice and the ethical principles of the Declaration of Helsinki. The study is approved by the authorities. Significant additions or changes to the protocol may be conducted after the application for amendment is approved by the Regulatory Authority and the Ethics Committee. Information regarding the participants is protected according to the General Data Protection Regulation and the actual law. The study is registered at the research inventory of the Regions of Denmark (1-16-02-210-24) and at Aarhus University (ARG-2024-731-23829). The study is registered and authorized at CTIS (EU CT 2023-510187-13-00).

Connect with a study center

  • Department of Pediatric and Adolescent Medicine, Aarhus University Hospital

    Aarhus, Aarhus N 8200
    Denmark

    Active - Recruiting

  • Department of Pediatric and Adolescent Medicine, Aalborg University Hospital

    Aalborg, 9000
    Denmark

    Active - Recruiting

  • Department of Pediatric and Adolescent medicine, Esbjerg Hospital

    Esbjerg, 6700
    Denmark

    Active - Recruiting

  • Department of Pediatric and Adolescent Medicine, Gødstrup Hospital

    Herning, 7400
    Denmark

    Active - Recruiting

  • Department of Pediatric and Adolescent Medicine, Kolding Hospital

    Kolding, 6000
    Denmark

    Active - Recruiting

Not the study for you?

Let us help you find the best match. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.