A Study to Evaluate the Pharmacokinetics, Safety and Tolerability of Mirabegron Oral Suspension in Pediatric Subjects From 3 to Less Than 12 Years of Age With Neurogenic Detrusor Overactivity (NDO) or Overactive Bladder (OAB)

A Multicentre, Open-Label, Single Dose, Phase 1 Study to Evaluate the Pharmacokinetics, Safety and Tolerability of Mirabegron Oral Suspension in Pediatric Subjects From 3 to Less Than 12 Years of Age With Neurogenic Detrusor Overactivity (NDO) or Overactive Bladder (OAB)

The purpose of the study is to evaluate the pharmacokinetics (PK) of mirabegron oral suspension after single dose administration in children with neurogenic detrusor overactivity (NDO) or overactive bladder (OAB).

This study will also evaluate the safety and tolerability as well as the acceptability and palatability of mirabegron oral suspension after single dose administration in children with NDO or OAB.

Study Overview

• Status: Completed
• Conditions: Overactive Bladder; Neurogenic Detrusor Overactivity
• Intervention / Treatment: Drug: mirabegron

• Study Type: Interventional
• Enrollment (Actual): 9
• Phase: Phase 1

Contacts and Locations

Study Locations

• Denmark
  • Aalborg, Denmark, 9000
    • Site DK45002
  • Aarhus, Denmark, 8200
    • Site DK45001
• Poland
  • Warsaw, Poland, 04-730
    • Site PL48001

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 3 years to 11 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Subject is male or female from 3 to less than 12 years of age.

• Subject has a documented diagnosis according to the International Children's Continence Society (ICCS) criteria of:

  • NDO, or
  • Idiopathic OAB

• Subject's weight/height:

  • Subject must have a body weight of ≥ 15.0 kg
  • For NDO: subject is not suffering from malnutrition or is not grossly overweight, in the opinion of the Investigator
  • For OAB: subject's weight and height are within the normal percentiles (3rd to 97th percentile) according to Centers for Disease Control and Prevention (CDC) growth charts.
• Subject is able to swallow the study medication in accordance with the protocol.
• Subject and subject's parent(s)/legal guardian agree that the subject will not participate in another interventional study while on treatment.
• Subject and subject's parent(s)/legal guardian are willing and able to comply with the study requirements and with the concomitant medication restrictions.

• Female subject must:

  • Be of non-childbearing potential: Clearly pre-menarchal or in the judgment of the Investigator is pre-menarchal.
  • Or the following inclusion criteria are to be followed, if applicable (rare cases): Female subject that reached puberty must: Agree not to try to become pregnant during the study and for 28 days after the final study drug administration, And have a negative urine pregnancy test predose Day 1, And, if heterosexually active agree to consistently use 2 forms of highly effective form of birth control starting at screening and throughout the study period and for28 days after the final study drug administration.

Exclusion Criteria:

• Subject has a known history of QTc prolongation or risk of QT prolongation (e.g. hypokalemia, family history of Long QT Syndrome) and/or QTcB of > 460 ms.
• Subject has a (mean) resting pulse rate > 99th percentile [Fleming et al, 2011].
• Subject has any clinically significant ECG (electrocardiogram) abnormality.
• Subject has established hypertension and a systolic or diastolic blood pressure greater than the 99th percentile of the normal range determined by sex, age and height, plus 5mmHg [NIH 2005].
• Subject has any clinically significant or unstable medical condition or disorder which, in the opinion of the Investigator, precludes the subject from participating in the study.
• Subject has current, untreated constipation (or fecal impaction for NDO subjects). If the constipation is being consistently treated for the last month, the subject can be included.
• Subject has been administered intradetrusor botulinum toxin injections; except if given > 4 months prior to screening and symptoms reappeared comparable to those before botulinum toxin injections.
• Subject has aspartate aminotransferase (AST) or alanine aminotransferase (ALT) greater than or equal to 2 times the ULN or total bilirubin greater than or equal to 1.5 times the ULN.
• Subject has severe renal impairment (estimated glomerular filtration rate < 30 mL/min (Larsson)).
• Subject has any other clinically significant out of range results of urinalysis, biochemistry or hematology.
• Subject has a history or current diagnosis of any malignancy.
• Subject has known or suspected hypersensitivity to mirabegron, other ß3-agonists, any of the excipients used in the mirabegron oral suspension formulation or previous severe hypersensitivity to any drug.
• Subject meets any of the contra indications or precautions for use of mirabegron listed in the Investigator's Brochure (IB).
• Subject has used mirabegron within 12 days of the planned Reference Day (Day -4 to Day -1).

• Subject requires ongoing treatment with any of the following prohibited medications:

  • Any anticholinergic/antimuscarinic drugs within 5 half-lives prior to planned Reference Day (Day -4 to Day -1).
  • Any drugs that are sensitive CYP2D6 substrates with a narrow therapeutic index (such as thioridazine, flecainide, propafenone, imipramine, desipramine) and sensitive P-gp substrates (such as digoxin, dabigatran) within 5 half-lives prior to the planned Reference Day (Day -4 to Day -1).
  • Any moderate or strong cytochrome CYP3A4/5 or P-gp inhibitors or inducers including natural and herbal remedies (such as itraconazole, rifampicin, phenytoin, carbamazepine, St. John's Wort, grapefruit, Seville orange) within 4 weeks (inducers only) or 5 half-lives (inhibitors only) prior to the planned Reference Day (Day -4 to Day -1).
• Subject has participated in another clinical trial and/or has taken an investigational drug within 30 days (or 5 half-lives of the investigational drug, whichever is longer) prior to the planned Reference Day (Day -4 to Day -1).
• Subject's parent(s)/legal guardian is an employee of the Astellas Group, any Contract Research Organization (CRO) involved, or the Investigator site executing the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: mirabegron; single dose	Drug: mirabegron; oral; Other Names: YM178; Myrbetriq; Myrbetric; Betanis; Betmiga

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetics of mirabegron in plasma: Cmax	Maximum concentration (Cmax)	Days 1 - 7
Pharmacokinetics of mirabegron in plasma: AUCinf	Area under the curve from time zero to infinity (AUCinf)	Days 1 - 7
Pharmacokinetics of mirabegron in plasma: tmax	The time after dosing when Cmax occurs (tmax)	Days 1 - 7
Pharmacokinetics of mirabegron in plasma: t1/2	Apparent Terminal Elimination Half-life (t1/2)	Days 1 - 7

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety profile as assessed by adverse events, clinical laboratory evaluations, vital signs and electrocardiograms (ECG)	Clinical laboratory evaluations include hematology, biochemistry and urinalysis.	Up to Day 7
Safety as assessed by post-void residual volume (PVR)		Day 1
Acceptability and Palatability as assessed by taste and acceptance of the suspension (5-point scale)	5-point scale consists of 3 questions ranging in score from 0=Really Bad to 4=Really Good.	Day 1

Collaborators and Investigators

• Sponsor: Astellas Pharma Europe B.V.

Publications and helpful links

Helpful Links

• Link to results on the Astellas Clinical Study Results website.

Study record dates

Study Major Dates

• Study Start (Actual): December 17, 2015
• Primary Completion (Actual): September 30, 2016
• Study Completion (Actual): September 30, 2016

Study Registration Dates

• First Submitted: August 17, 2015
• First Submitted That Met QC Criteria: August 17, 2015
• First Posted (Estimate): August 18, 2015

Study Record Updates

• Last Update Posted (Actual): June 30, 2021
• Last Update Submitted That Met QC Criteria: June 28, 2021
• Last Verified: June 1, 2021

More Information

Terms related to this study

• Keywords: overactive bladder; OAB; Myrbetric; neurogenic detrusor overactivity; Betanis; Myrbetriq; NDO; YM178; mirabegron; Betmiga
• Additional Relevant MeSH Terms: Urologic Diseases; Urinary Bladder Diseases; Lower Urinary Tract Symptoms; Urological Manifestations; Urinary Bladder, Overactive; 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: 178-CL-203; 2015-000700-26 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No
• IPD Plan Description: Access to anonymized individual participant level data will not be provided for this trial as it meets one or more of the exceptions described on www.clinicalstudydatarequest.com under "Sponsor Specific Details for Astellas."

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No