Crocodile: Open-label Phase 3 Study With Mirabegron in Children From 3 to Less Than 18 Years of Age With Neurogenic Detrusor Overactivity

Sponsor
Astellas Pharma Europe B.V. (Industry)
Overall Status
Completed
CT.gov ID
NCT02751931
Collaborator
(none)
91
32
2
34.6
2.8
0.1

Study Details

Study Description

Brief Summary

The objective of the study was to evaluate the efficacy, safety, tolerability and pharmacokinetics of mirabegron after multiple-dose administration in the pediatric population.

Condition or Disease Intervention/Treatment Phase
Phase 3

Detailed Description

This was a phase 3, open-label, baseline-controlled, multicenter study. The study consisted of 3 periods: Pretreatment period: for a maximum of 28 days before baseline, including screening, washout (if applicable) and baseline.

Efficacy treatment period: beginning the day after baseline and continuing to week 24. Long-term safety period: beginning after week 24 and continuing to week 52 (end of study [EOS]), or to the end of treatment (EOT).

Study Design

Study Type:
Interventional
Actual Enrollment :
91 participants
Allocation:
Non-Randomized
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
An Open-label, Baseline-controlled, Multicenter, Phase 3 Dose-titration Study Followed by a Fixed-dose Observation Period to Evaluate Efficacy, Safety and Pharmacokinetics of Mirabegron in Children and Adolescents From 3 to Less Than 18 Years of Age With Neurogenic Detrusor Overactivity (NDO) on Clean Intermittent Catheterization (CIC)
Actual Study Start Date :
Jun 17, 2016
Actual Primary Completion Date :
Nov 5, 2018
Actual Study Completion Date :
May 6, 2019

Arms and Interventions

Arm Intervention/Treatment
Experimental: Children (3 to < 12 Years)

Participants aged 3 to < 12 years received initial dose of 25 milligram (mg) of mirabegron orally once daily based on weight (pediatric equivalent dose of 25 mg (milligram) [PED25]) on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50], orally once daily based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 end-of-study (EOS) or end-of-treatment (EOT).

Drug: Mirabegron
Participants received initial dose of 25 mg of mirabegron PED25 orally once daily. At weeks 2, 4 or 8, participants were up-titrated to PED50 based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants with a body weight >=35 kg received mirabegron tablets or body weight <35 kg received mirabegron oral suspension. At week 24, participants on mirabegron oral suspension could switch to tablets if the body weight became >=35 kg or participants on mirabegron tablets could switch to oral suspension if the body weight became <35 Kg or participants could switch to either of the dosage form for acceptability reasons after sponsor's prior approval and on a case-by-case basis. Mirabegron extended-release granules were reconstituted with water to prepare a mirabegron oral suspension of 8 mg/mL. Administration was via an oral syringe with a sip of water afterwards.
Other Names:
  • YM178
  • Myrbetriq
  • Betanis
  • Betmiga
  • Experimental: Adolescents (12 to < 18 Years)

    Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] orally once daily based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.

    Drug: Mirabegron
    Participants received initial dose of 25 mg of mirabegron PED25 orally once daily. At weeks 2, 4 or 8, participants were up-titrated to PED50 based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants with a body weight >=35 kg received mirabegron tablets or body weight <35 kg received mirabegron oral suspension. At week 24, participants on mirabegron oral suspension could switch to tablets if the body weight became >=35 kg or participants on mirabegron tablets could switch to oral suspension if the body weight became <35 Kg or participants could switch to either of the dosage form for acceptability reasons after sponsor's prior approval and on a case-by-case basis. Mirabegron extended-release granules were reconstituted with water to prepare a mirabegron oral suspension of 8 mg/mL. Administration was via an oral syringe with a sip of water afterwards.
    Other Names:
  • YM178
  • Myrbetriq
  • Betanis
  • Betmiga
  • Outcome Measures

    Primary Outcome Measures

    1. Change From Baseline in Maximum Cystometric Capacity (MCC) at Week 24 [Baseline and week 24]

      Change from baseline in MCC was based on filling urodynamics (volume at the end of filling). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers. Missing MCC observations at week 24 were imputed using last observation carried forward (LOCF).

    Secondary Outcome Measures

    1. Change From Baseline in Bladder Compliance (ΔV/ΔP) [Baseline and weeks 4 and 24]

      Bladder compliance was an indication of the elasticity of the bladder wall and was calculated by dividing the change in volume by the change in detrusor pressure during the filling of the bladder. Change from baseline in bladder compliance (change in volume/change in pressure) was assessed by the independent central reviewers and reported as annotations on the urodynamic trace and in an external database. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.

    2. Change From Baseline in Maximum Cystometric Capacity at Week 4 [Baseline and week 4]

      Change from baseline in MCC was based on filling urodynamics (volume at the end of filling). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.

    3. Change From Baseline in Number of Overactive Detrusor Contractions (> 15 cm H20) Until End of Filling [Baseline and weeks 4 and 24]

      Detrusor overactivity is the occurrence of involuntary detrusor contractions during filling cystometry. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.

    4. Change From Baseline in Detrusor Pressure at End of Filling [Baseline and weeks 4 and 24]

      Detrusor pressure was defined as bladder pressure minus intra-abdominal pressure as assessed by urodynamics. Filling was stopped (end of filling) when the detrusor pressure exceeded 100 cm H2O or was considered dangerously high by the investigator or urodynamicist (for instance, a prolonged passive detrusor pressure > 40 cm H2O). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.

    5. Change From Baseline in Filling Bladder Volume Until First Overactive Detrusor Contraction (> 15 cm H20) [Baseline and weeks 4 and 24]

      Detrusor overactivity is the occurrence of involuntary detrusor contractions during filling cystometry. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers. If no detrusor contraction of > 15 cm H2O occurred, the bladder volume was imputed with maximum cystometric capacity.

    6. Change From Baseline in Average Catheterized Volume Per Catheterization [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      For each participant, the average catheterized volume per catheterization was calculated as the sum of all available/non-missing catheterized volumes recorded over 2 measuring days in the weekend diary, whether or not the 2 days were consecutive divided by the number of catheterizations with non-missing volumes. If volumes were recorded on 1 single day of the weekend diary, the average catheterized volume per catheterization was calculated using all available/non-missing catheterized volumes recorded that day. If no volumes were recorded on any day of the weekend diary, the average catheterized volume per catheterization was missing. A valid bladder diary day in the weekend diary was any e-diary day for which ≥1 catheterized volume >0 mL was recorded with complete date and time.

    7. Change From Baseline in Maximum Catheterized Volume [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      For each participant, the maximum catheterized volume per day was calculated using all available/non-missing catheterized volumes recorded for the 2 measuring days in the weekend e-diary, whether or not these 2 days were consecutive. Maximum value was calculated separately for each measuring day and the mean of the two values was used. If volumes recorded on 1 single day of the weekend e-diary, the maximum catheterized volume per day was calculated using all available/non-zero catheterized volumes recorded that day. If no volumes were recorded on any day of the weekend e-diary, the maximum catheterized volume per day was missing. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.

    8. Change From Baseline in Maximum Catheterized Daytime Volume (MCDV) [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      For each participant, the MCDV was calculated using all available/non-missing catheterized daytime volumes for the 2 measuring days in the weekend e-diary, whether or not the 2 days were consecutive. Maximum value was calculated separately for each measuring day and the mean of the 2 values was used. If volumes were recorded on 1 single day of the weekend e-diary, the MCDV was calculated using all available/non-zero catheterized daytime volumes recorded that day. If no volumes were recorded on any day of the weekend e-diary, the MCDV was missing. Daytime was defined as the time between wake-up time (minus 30 min) & time to sleep (plus 29 min) recorded in the e-diary. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.

    9. Change From Baseline in Average Morning Catheterized Volume [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      The first morning catheterized volume was the first recorded non-zero volume within or after the hour of the wake-up time on a volume-measuring day in the e-diary. The average first morning catheterized volume was calculated as the average of the available first morning catheterized volumes recorded for the 2 measuring days in the weekend e-diary, whether or not these 2 days were consecutive. If the first morning catheterized volume was recorded on 1 single day of the weekend e-diary, the average morning catheterized is the first morning catheterized that day. If no first morning catheterized volumes are recorded on any day of the weekend e-diary, the average first morning catheterized volume was missing. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.

    10. Change From Baseline in Mean Number of Leakage Episodes Per Day [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      For each participant, the mean number of leakage episodes per day (during day & night time) was calculated using all available/non-missing number of leakage episodes for the 2 measuring days in the weekend diary during day & night time. If the number of leakage episodes was recorded on 1 single day in the 7-day diary during day & night time, the mean number of leakage episodes per day during day & night time is equal to the total number of leakage episodes recorded that day during day & night time. If no leakage episodes were recorded on any day of the weekend diary during day & night time, the mean number of leakage episodes per day was zero. Participants who did not report any leakage episode during the visit were imputed with a '0' for that visit. A valid bladder diary day in the weekend diary was any e-diary day for which ≥1 catheterized volume >0 mL was recorded with complete date and time.

    11. Change From Baseline in Number of Dry Days Per 7 Days (Day and Night Time) [Baseline and weeks 2, 4, 8, 12, 24, 36 and 52]

      Dry days were defined as leakage-free days, this included day and night time. Participants recorded dry days in the 7-day diary. Dry days were calculated as follows: Ddry was the number of valid diary days where the response to the question 'Did you leak between this catheterization and the last one' was 'No' each time a new catheterization was entered in the e-diary during the day & night time period. Dwet was the number of valid diary days where the response to the question 'Did you leak between this catheterization and the last one' was 'Yes' for at least one catheterization entered during the day and night time period. If (Ddry + Dwet) > 3, the number of dry days per 7 days was calculated as Ddry/(Ddry + Dwet) x 7, otherwise the value was missing.

    12. Change From Baseline in Pediatric Incontinence Questionnaire (PIN-Q) Score [Baseline and weeks 24 and 52]

      PIN-Q measured quality of life via an e-diary. Total score ranged from 0 (no effect) to 80 (worst effect); decrease in score indicated improvement. Total score was 20x average of individual PinQ items, the 20 Likert scales were converted to a score: Items 6 & 17; 0: "No" to 4: "Definitely" was used; & For the other 18 items; 0: "No" to 4: "All the time" was used. Expectation that questionnaires had limited missing values; if answers >2 questions were missing, total score was not calculated & was missing. Individual item scores were directly imputed. Change from baseline to each post-baseline visit in the total score was post-baseline visit value minus baseline value. If either baseline or post-baseline visit value was missing, change from baseline was missing. If change was: <0, improvement between 2 time-points; =0, no change between 2 time points; >0, worsening between 2 time points.

    13. Change From Baseline in Patient Global Impression of Severity Scale (PGI-S) [Baseline and weeks 24 and 52]

      The PGI-S was an answer to the question: "How did you feel about your bladder condition during the past 3 days?" Participants evaluated their recent condition as "Really Bad"(0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) &"Really Good" (4). An increase indicated improvement. The total score ranged from 0 to 4, where higher scores indicated improvement.The change from baseline to each postbaseline visit in the PGI-S score is the value at the post-baseline visit minus the value at the baseline visit. If either the baseline or the post-baseline visit value is missing, the change from baseline was missing. A positive change indicated an improvement while a negative change indicated a worsening.

    14. Number of Participants With Clinician Global Impression of Change (CGI-C) [Weeks 24 and 52]

      The Clinician Global Impression of Change (CGI-C) is a 7 point scale that required the clinician to assess how much the participant's overall bladder symptoms since the start of the study on day 1 has improved or worsened and rated as: very much improved (1); much improved (2); minimally improved (3); no change (4); minimally worse (5); much worse (6); or very much worse (7). The total score range from 1-7, where lower scores indicated improvement.

    15. Number of Participants With Study Drug Acceptability for Tablets at Week 4 [Week 4]

      Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).

    16. Number of Participants With Study Drug Acceptability for Tablets at Week 24 [Week 24]

      Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).

    17. Number of Participants With Study Drug Acceptability for Tablets at Week 52 [Week 52]

      Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).

    18. Number of Participants With Study Drug Acceptability for Oral Suspension at Week 4 [Week 4]

      Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).

    19. Number of Participants With Study Drug Acceptability for Oral Suspension at Week 24 [Week 24]

      Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).

    20. Number of Participants With Study Drug Acceptability for Oral Suspension at Week 52 [Week 52]

      Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).

    21. Number of Participants With Adverse Events (AEs) [From the first dose of study drug administration up to end-of-treatment (EoT) (up to week 52)]

      An AE was defined as any untoward medical occurrence in a participant who was given the study drug or who had undergone study procedures and did not necessarily have a causal relationship with this treatment. An AE could therefore be any unintended sign (including an abnormal laboratory finding), symptom or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. A treatment-emergent adverse event (TEAE) was defined as any AE with date of onset occurring on or after the first dose of study medication and up to the end of study.

    22. Maximum Plasma Concentration (Cmax) of Mirabegron [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      Cmax was defined as the maximum plasma concentration of mirabegron.

    23. Time to Reach Maximum Plasma Concentration of Mirabegron Following Drug Administration (Tmax) [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      Tmax was defined as the time to reach maximum plasma concentration following drug administration.

    24. Area Under the Plasma Concentration-Time Curve From Time Zero to 24 Hours (AUC24) for Mirabegron [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      AUC (0-24) is the area under the plasma concentration versus time curve from time zero (pre-dose) to 24 hours post-dose.

    25. Plasma Concentration of Mirabegron at the End of a Dosing Interval at Steady State (Ctrough) [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      Ctrough was defined as the measured plasma concentration of mirabegron at the end of a dosing interval at steady state.

    26. Apparent Total Clearance of Mirabegron From Plasma After Oral Administration (CL/F) [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.

    27. Apparent Volume of Distribution After Non-intravenous Administration (Vz/F) of Mirabegron [A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.]

      Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    3 Years to 17 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Subject has a body weight of greater than or equal to 11 kg.

    • Subject suffers from NDO confirmed by urodynamic investigation at baseline. The diagnosis of NDO must be confirmed by the presence of at least 1 involuntary detrusor contraction > 15 cm H2O from baseline detrusor pressure, and/or a decrease in compliance leading to an increase in baseline detrusor pressure of > 20 cm H2O.

    • Subject has been using CIC for at least 4 weeks prior to visit 1/screening.

    • Subject has a current indication for drug therapy to manage NDO.

    • Subject is able to take the study drug in accordance with the protocol

    Exclusion Criteria:
    • Subject has a known genitourinary condition (other than NDO) that may cause overactive contractions or incontinence or kidney/bladder stones or another persistent urinary tract pathology that may cause symptoms.

    • Subject has one of the following gastrointestinal problems: partial or complete obstruction, decreased motility such as paralytic ileus, subjects at risk of gastric retention.

    • Subject has a urinary indwelling catheter within 4 weeks prior to visit 1/screening.

    • Subject has a surgically treated underactive urethral sphincter

    • Subject has vesico-ureteral reflux grade 3 to 5.

    • Subject has undergone bladder augmentation surgery.

    • Subject receives electrostimulation therapy, if started within 30 days before visit 1/screening or is expected to start during the study period. Subjects who are on an established regimen may remain on this for the duration of the study.

    • Subject suffers from a symptomatic urinary tract infection (UTI) at baseline (symptomatic is defined as pain, fever, hematuria, new onset foul-smelling urine). If present at visit 1/screening or diagnosed between visit 1/screening and visit 3/baseline, the UTI should be treated successfully (clinical recovery) prior to baseline. If a symptomatic UTI is present at baseline, all baseline assessments are allowed to be postponed for a maximum of 7 days until the UTI is successfully treated (clinical recovery).

    • Subject has a (mean) resting pulse rate > 99th percentile [Fleming et al, 2011].

    • Subject has an 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 a risk of QT prolongation (e.g., hypokalemia, long QT syndrome [LQTS]; or family history of LQTS, exercise-induced syncope).

    • Subject has severe renal impairment (eGFR according to Larsson equation < 30 mL/min).

    • Subject's aspartate aminotransferase (AST) or alanine aminotransferase (ALT) is greater than or equal to 2 times the upper limit of normal (ULN) or total bilirubin (TBL) greater than or equal to 1.5 times the ULN according to age and sex.

    • Subject has a history or presence of any malignancy prior to visit 1/screening.

    • Subject has known or suspected hypersensitivity to mirabegron, any of the excipients used in the current formulations or previous severe hypersensitivity to any drug.

    • Subject has participated in another clinical trial (and/or has taken an investigational drug within 30 days (or 5 half-lives of the drug, or the limit set by national law, whichever is longer) prior to visit 1/screening.

    • Subject uses any of the following prohibited medications (after start of washout):

    • Any medication, other than the study drug used, for the management of NDO;

    • Any drugs that are sensitive CYP2D6 substrates with a narrow therapeutic index or sensitive P-glycoprotein (P-gp) substrates

    • Any strong CYP3A4 inhibitors if the subject has a mild to moderate renal impairment (eGFR 30 - 89 mL/min).

    • Subject has been administered intravesical botulinum toxin; except if given > 4 months prior to visit 1/screening and the subject experiences symptoms comparable to those existing prior to the botulinum toxin injections.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Site AU61002 Randwick New South Wales Australia 2031
    2 Site BE32004 Edegem Belgium B-2650
    3 Site BE32001 Gent Belgium 9000
    4 Site HR38501 Zagreb Croatia 10000
    5 Site HR38503 Zagreb Croatia 10000
    6 Site DK45001 Aarhus N Denmark DK-8200
    7 Site DK45002 Copenhagen Denmark 2100
    8 Site IL97202 Jerusalem Israel 91090
    9 Site JO96202 Amman Jordan 11183
    10 Site JO96201 Irbid Jordan 22110
    11 Site KR82001 Seoul Korea, Republic of 03722
    12 Site KR82002 Seoul Korea, Republic of 110744
    13 Site LV37101 Riga Latvia LV-1004
    14 Site LT37002 Kaunas Lithuania LT-50009
    15 Site LT37001 Vilnius Lithuania LT-08406
    16 Site MY60001 Georgetown Malaysia 10990
    17 Site MY60002 Kuala Lumpur Malaysia 50586
    18 Site MX52002 Mexico City Mexico 06700
    19 Site NO47001 Bergen Norway 5021
    20 Site PH63001 Quezon City Philippines 1100
    21 Site PL48003 Gdansk Poland 80-952
    22 Site PL48001 Gdansk Poland 80803
    23 Site PL48002 Warszawa Poland 04-730
    24 Site RO40002 Bucuresti Romania 021495
    25 Site RO40001 Bucuresti Romania 22328
    26 Site RS38102 Nis Serbia
    27 Site RS38101 Novi Sad Serbia 21000
    28 Site SK42101 Bratislava Slovakia 83301
    29 Site TW88601 New Taipei City Taiwan 23142
    30 Site TR90002 Ankara Turkey 06100
    31 Site TR90006 Bursa Turkey
    32 Site TR90008 Mersin Turkey 33343

    Sponsors and Collaborators

    • Astellas Pharma Europe B.V.

    Investigators

    • Study Director: Medical Monitor, Astellas Pharma Europe B.V.

    Study Documents (Full-Text)

    More Information

    Additional Information:

    Publications

    None provided.
    Responsible Party:
    Astellas Pharma Europe B.V.
    ClinicalTrials.gov Identifier:
    NCT02751931
    Other Study ID Numbers:
    • 178-CL-206A
    • 2015-002876-25
    First Posted:
    Apr 26, 2016
    Last Update Posted:
    Jun 28, 2021
    Last Verified:
    Jun 1, 2021
    Individual Participant Data (IPD) Sharing Statement:
    Yes
    Plan to Share IPD:
    Yes
    Keywords provided by Astellas Pharma Europe B.V.
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details Pediatric participants consisting of male and female children from 3 to <12 years of age and adolescents from 12 to <18 years of age, with a body weight of >=11 kilogram (kg), with Neurogenic detrusor overactivity (NDO) on clean intermittent catheterization (CIC) were enrolled in this study.
    Pre-assignment Detail Eligible participants who met inclusion and none of the exclusion criteria were enrolled. Participants who received oral drug to manage their NDO completed a 2 week washout period. A total of 113 pediatric participants were screened, 22 of whom were screening failures.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 milligram (mg) of mirabegron orally once daily based on weight (pediatric equivalent dose of 25 mg (milligram) [PED25]) on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 end-of-study (EOS) or end-of-treatment (EOT). Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Period Title: Overall Study
    STARTED 56 35
    Treated 55 31
    COMPLETED 43 27
    NOT COMPLETED 13 8

    Baseline Characteristics

    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years) Total
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Total of all reporting groups
    Overall Participants 56 35 91
    Age (Years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [Years]
    7.9
    (2.5)
    13.9
    (1.6)
    10.2
    (3.7)
    Sex: Female, Male (Count of Participants)
    Female
    33
    58.9%
    15
    42.9%
    48
    52.7%
    Male
    23
    41.1%
    20
    57.1%
    43
    47.3%
    Ethnicity (NIH/OMB) (Count of Participants)
    Hispanic or Latino
    1
    1.8%
    2
    5.7%
    3
    3.3%
    Not Hispanic or Latino
    55
    98.2%
    33
    94.3%
    88
    96.7%
    Unknown or Not Reported
    0
    0%
    0
    0%
    0
    0%
    Race (NIH/OMB) (Count of Participants)
    American Indian or Alaska Native
    0
    0%
    1
    2.9%
    1
    1.1%
    Asian
    13
    23.2%
    8
    22.9%
    21
    23.1%
    Native Hawaiian or Other Pacific Islander
    0
    0%
    0
    0%
    0
    0%
    Black or African American
    0
    0%
    0
    0%
    0
    0%
    White
    41
    73.2%
    25
    71.4%
    66
    72.5%
    More than one race
    2
    3.6%
    1
    2.9%
    3
    3.3%
    Unknown or Not Reported
    0
    0%
    0
    0%
    0
    0%
    Maximum Cystometric Capacity (milliliter (mL)) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [milliliter (mL)]
    158.64
    (94.50)
    238.92
    (99.14)
    188.16
    (103.15)

    Outcome Measures

    1. Primary Outcome
    Title Change From Baseline in Maximum Cystometric Capacity (MCC) at Week 24
    Description Change from baseline in MCC was based on filling urodynamics (volume at the end of filling). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers. Missing MCC observations at week 24 were imputed using last observation carried forward (LOCF).
    Time Frame Baseline and week 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the full analysis set (FAS) which included all participants who took ≥ 1 dose of study drug and provided both valid (as by the central reviewer's assessment) nonmissing MCC measurements at baseline and at a postbaseline visit for the primary efficacy endpoint.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults (PED50) based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults (PED50) based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 43 25
    Mean (Standard Deviation) [mL]
    72.09
    (87.09)
    113.21
    (82.99)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 72.09
    Confidence Interval (2-Sided) 95%
    45.28 to 98.89
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 113.21
    Confidence Interval (2-Sided) 95%
    78.95 to 147.47
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    2. Secondary Outcome
    Title Change From Baseline in Bladder Compliance (ΔV/ΔP)
    Description Bladder compliance was an indication of the elasticity of the bladder wall and was calculated by dividing the change in volume by the change in detrusor pressure during the filling of the bladder. Change from baseline in bladder compliance (change in volume/change in pressure) was assessed by the independent central reviewers and reported as annotations on the urodynamic trace and in an external database. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.
    Time Frame Baseline and weeks 4 and 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 39 22
    Change at Week 4
    -4.09
    (50.78)
    15.16
    (22.69)
    Change at Week 24
    14.62
    (42.09)
    13.59
    (15.02)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.618
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -4.09
    Confidence Interval (2-Sided) 95%
    -20.55 to 12.38
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.005
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 15.16
    Confidence Interval (2-Sided) 95%
    5.10 to 25.22
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.055
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 14.62
    Confidence Interval (2-Sided) 95%
    -0.31 to 29.54
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 13.59
    Confidence Interval (2-Sided) 95%
    6.75 to 20.42
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    3. Secondary Outcome
    Title Change From Baseline in Maximum Cystometric Capacity at Week 4
    Description Change from baseline in MCC was based on filling urodynamics (volume at the end of filling). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.
    Time Frame Baseline and week 4

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies those who where evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults (PED50) based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults (PED50) based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 41 23
    Mean (Standard Deviation) [mL]
    41.36
    (71.64)
    80.78
    (96.15)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change from Baseline at week 4 - Children.
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 41.36
    Confidence Interval (2-Sided) 95%
    18.75 to 63.97
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 80.78
    Confidence Interval (2-Sided) 95%
    39.20 to 122.36
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    4. Secondary Outcome
    Title Change From Baseline in Number of Overactive Detrusor Contractions (> 15 cm H20) Until End of Filling
    Description Detrusor overactivity is the occurrence of involuntary detrusor contractions during filling cystometry. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.
    Time Frame Baseline and weeks 4 and 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 41 22
    Change at Week 4
    0.44
    (5.82)
    -0.64
    (2.94)
    Change at Week 24
    -1.86
    (4.16)
    -0.77
    (3.87)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.632
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.44
    Confidence Interval (2-Sided) 95%
    -1.40 to 2.28
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.321
    Comments
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.64
    Confidence Interval (2-Sided) 95%
    -1.94 to 0.67
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.011
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -1.86
    Confidence Interval (2-Sided) 95%
    -3.27 to -0.45
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.359
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.77
    Confidence Interval (2-Sided) 95%
    -2.49 to 0.94
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    5. Secondary Outcome
    Title Change From Baseline in Detrusor Pressure at End of Filling
    Description Detrusor pressure was defined as bladder pressure minus intra-abdominal pressure as assessed by urodynamics. Filling was stopped (end of filling) when the detrusor pressure exceeded 100 cm H2O or was considered dangerously high by the investigator or urodynamicist (for instance, a prolonged passive detrusor pressure > 40 cm H2O). During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers.
    Time Frame Baseline and weeks 4 and 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 41 22
    Change at Week 4
    -12.38
    (19.56)
    -6.48
    (30.70)
    Change at Week 24
    -18.11
    (19.97)
    -13.19
    (19.91)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -12.38
    Confidence Interval (2-Sided) 95%
    -18.56 to -6.21
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.334
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -6.48
    Confidence Interval (2-Sided) 95%
    -20.09 to 7.13
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -18.11
    Confidence Interval (2-Sided) 95%
    -24.87 to -11.35
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.005
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -13.19
    Confidence Interval () 95%
    -22.02 to -4.36
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    6. Secondary Outcome
    Title Change From Baseline in Filling Bladder Volume Until First Overactive Detrusor Contraction (> 15 cm H20)
    Description Detrusor overactivity is the occurrence of involuntary detrusor contractions during filling cystometry. During urodynamic assessments, the bladder was filled until voiding/leakage began, or until the participant experienced pain or discomfort, or because dangerous high detrusor pressure, or 135% of maximum catheterized volume for age had been reached. A valid urodynamic assessment was confirmed valid by the central reviewers. If no detrusor contraction of > 15 cm H2O occurred, the bladder volume was imputed with maximum cystometric capacity.
    Time Frame Baseline and weeks 4 and 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 21 8
    Change at Week 4
    54.00
    41.15
    Change at Week 24
    68.00
    62.00
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a Wilcoxon signed-rank test, testing the null hypothesis that week 4 median is equal to baseline median.
    Method Wilcoxon signed-rank test
    Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.148
    Comments From a Wilcoxon signed-rank test, testing the null hypothesis that week 4 median is equal to baseline median.
    Method Wilcoxon signed-rank test
    Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a Wilcoxon signed-rank test, testing the null hypothesis that week 24 median is equal to baseline median.
    Method Wilcoxon signed-rank test
    Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.039
    Comments From a Wilcoxon signed-rank test, testing the null hypothesis that week 24 median is equal to baseline median.
    Method Wilcoxon signed-rank test
    Comments
    7. Secondary Outcome
    Title Change From Baseline in Average Catheterized Volume Per Catheterization
    Description For each participant, the average catheterized volume per catheterization was calculated as the sum of all available/non-missing catheterized volumes recorded over 2 measuring days in the weekend diary, whether or not the 2 days were consecutive divided by the number of catheterizations with non-missing volumes. If volumes were recorded on 1 single day of the weekend diary, the average catheterized volume per catheterization was calculated using all available/non-missing catheterized volumes recorded that day. If no volumes were recorded on any day of the weekend diary, the average catheterized volume per catheterization was missing. A valid bladder diary day in the weekend diary was any e-diary day for which ≥1 catheterized volume >0 mL was recorded with complete date and time.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 43 24
    Change at Week 2
    14.58
    (43.98)
    35.99
    (54.19)
    Change at Week 4
    30.08
    (49.50)
    51.96
    (64.71)
    Change at Week 8
    36.90
    (46.05)
    45.10
    (53.77)
    Change at Week 12
    32.25
    (45.51)
    43.94
    (58.49)
    Change at Week 24
    41.63
    (58.03)
    59.31
    (82.22)
    Change at Week 36
    53.87
    (91.74)
    52.14
    (74.90)
    Change at Week 52
    42.84
    (65.31)
    42.40
    (69.25)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.035
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 14.58
    Confidence Interval (2-Sided) 95%
    1.0 to 28.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 35.99
    Confidence Interval (2-Sided) 95%
    13.1 to 58.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 30.08
    Confidence Interval (2-Sided) 95%
    14.7 to 45.5
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 51.96
    Confidence Interval (2-Sided) 95%
    24.6 to 79.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 36.90
    Confidence Interval (2-Sided) 95%
    22.7 to 51.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 45.10
    Confidence Interval (2-Sided) 95%
    21.3 to 68.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 32.25
    Confidence Interval (2-Sided) 95%
    18.2 to 46.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 43.94
    Confidence Interval (2-Sided) 95%
    19.2 to 68.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 41.63
    Confidence Interval (2-Sided) 95%
    23.3 to 60.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 59.31
    Confidence Interval (2-Sided) 95%
    23.8 to 94.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 53.87
    Confidence Interval (2-Sided) 95%
    24.5 to 83.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 52.14
    Confidence Interval (2-Sided) 95%
    20.5 to 83.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 42.84
    Confidence Interval (2-Sided) 95%
    22.0 to 63.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.008
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 42.40
    Confidence Interval (2-Sided) 95%
    12.5 to 72.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    8. Secondary Outcome
    Title Change From Baseline in Maximum Catheterized Volume
    Description For each participant, the maximum catheterized volume per day was calculated using all available/non-missing catheterized volumes recorded for the 2 measuring days in the weekend e-diary, whether or not these 2 days were consecutive. Maximum value was calculated separately for each measuring day and the mean of the two values was used. If volumes recorded on 1 single day of the weekend e-diary, the maximum catheterized volume per day was calculated using all available/non-zero catheterized volumes recorded that day. If no volumes were recorded on any day of the weekend e-diary, the maximum catheterized volume per day was missing. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 43 24
    Change at Week 2
    17.50
    (73.58)
    42.38
    (78.23)
    Change at Week 4
    46.69
    (80.29)
    73.25
    (103.98)
    Change at Week 8
    45.27
    (75.22)
    42.86
    (79.97)
    Change at Week 12
    33.23
    (68.31)
    47.29
    (69.83)
    Change at Week 24
    49.88
    (103.70)
    84.39
    (121.98)
    Change at Week 36
    60.09
    (121.66)
    54.78
    (104.54)
    Change at Week 52
    53.51
    (96.72)
    54.30
    (104.74)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.126
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 17.50
    Confidence Interval (2-Sided) 95%
    -5.1 to 40.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.014
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 42.38
    Confidence Interval (2-Sided) 95%
    9.3 to 75.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 46.69
    Confidence Interval (2-Sided) 95%
    21.7 to 71.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 73.25
    Confidence Interval (2-Sided) 95%
    29.3 to 117.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments Pre-Specified
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 45.27
    Confidence Interval (2-Sided) 95%
    22.1 to 68.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.020
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 42.86
    Confidence Interval (2-Sided) 95%
    7.4 to 78.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 33.23
    Confidence Interval (2-Sided) 95%
    12.2 to 54.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 47.29
    Confidence Interval (2-Sided) 95%
    17.8 to 76.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.004
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 49.88
    Confidence Interval (2-Sided) 95%
    17.1 to 82.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 84.39
    Confidence Interval (2-Sided) 95%
    31.6 to 137.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 60.09
    Confidence Interval (2-Sided) 95%
    21.2 to 99.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.017
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 54.78
    Confidence Interval (2-Sided) 95%
    10.6 to 98.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 53.51
    Confidence Interval (2-Sided) 95%
    22.6 to 84.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.021
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 54.30
    Confidence Interval (2-Sided) 95%
    9.0 to 99.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    9. Secondary Outcome
    Title Change From Baseline in Maximum Catheterized Daytime Volume (MCDV)
    Description For each participant, the MCDV was calculated using all available/non-missing catheterized daytime volumes for the 2 measuring days in the weekend e-diary, whether or not the 2 days were consecutive. Maximum value was calculated separately for each measuring day and the mean of the 2 values was used. If volumes were recorded on 1 single day of the weekend e-diary, the MCDV was calculated using all available/non-zero catheterized daytime volumes recorded that day. If no volumes were recorded on any day of the weekend e-diary, the MCDV was missing. Daytime was defined as the time between wake-up time (minus 30 min) & time to sleep (plus 29 min) recorded in the e-diary. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 43 24
    Change at Week 2
    18.13
    (73.38)
    35.58
    (86.78)
    Change at Week 4
    37.71
    (83.33)
    70.35
    (113.98)
    Change at Week 8
    43.91
    (74.44)
    38.11
    (90.88)
    Change at Week 12
    29.05
    (67.86)
    43.04
    (73.82)
    Change at Week 24
    44.20
    (98.31)
    81.37
    (117.77)
    Change at Week 36
    58.49
    (121.12)
    50.90
    (114.05)
    Change at Week 52
    53.76
    (100.24)
    49.13
    (117.23)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.113
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 18.13
    Confidence Interval (2-Sided) 95%
    -4.5 to 40.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.056
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 35.58
    Confidence Interval (2-Sided) 95%
    -1.1 to 72.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.005
    Comments
    Method t-test, 2 sided
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 37.71
    Confidence Interval (2-Sided) 95%
    11.7 to 63.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.006
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 70.35
    Confidence Interval (2-Sided) 95%
    22.2 to 118.5
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 43.91
    Confidence Interval (2-Sided) 95%
    21.0 to 66.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.063
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 38.11
    Confidence Interval (2-Sided) 95%
    -2.2 to 78.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.008
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 29.05
    Confidence Interval (2-Sided) 95%
    8.2 to 49.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.009
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 43.04
    Confidence Interval (2-Sided) 95%
    11.9 to 74.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.006
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 44.20
    Confidence Interval (2-Sided) 95%
    13.2 to 75.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 81.37
    Confidence Interval (2-Sided) 95%
    30.4 to 132.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.004
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 58.49
    Confidence Interval (2-Sided) 95%
    19.8 to 97.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.039
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 50.90
    Confidence Interval (2-Sided) 95%
    2.7 to 99.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 53.76
    Confidence Interval (2-Sided) 95%
    21.7 to 85.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.057
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 49.13
    Confidence Interval (2-Sided) 95%
    -1.6 to 99.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    10. Secondary Outcome
    Title Change From Baseline in Average Morning Catheterized Volume
    Description The first morning catheterized volume was the first recorded non-zero volume within or after the hour of the wake-up time on a volume-measuring day in the e-diary. The average first morning catheterized volume was calculated as the average of the available first morning catheterized volumes recorded for the 2 measuring days in the weekend e-diary, whether or not these 2 days were consecutive. If the first morning catheterized volume was recorded on 1 single day of the weekend e-diary, the average morning catheterized is the first morning catheterized that day. If no first morning catheterized volumes are recorded on any day of the weekend e-diary, the average first morning catheterized volume was missing. A valid bladder diary day in the weekend diary was any e-diary day for which >=1 catheterized volume >0 mL was recorded with complete date and time.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 41 21
    Change at Week 2
    7.98
    (101.36)
    39.52
    (80.24)
    Change at Week 4
    19.81
    (89.04)
    75.25
    (105.72)
    Change at Week 8
    34.01
    (89.53)
    44.43
    (89.01)
    Change at Week 12
    8.68
    (80.16)
    38.23
    (66.80)
    Change at Week 24
    40.76
    (116.41)
    86.66
    (96.55)
    Change at Week 36
    31.08
    (145.63)
    68.47
    (122.43)
    Change at Week 52
    31.83
    (94.25)
    38.14
    (108.06)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.617
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 7.98
    Confidence Interval (2-Sided) 95%
    -24.0 to 40.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.035
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 39.52
    Confidence Interval (2-Sided) 95%
    3.0 to 76.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.167
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 19.81
    Confidence Interval (2-Sided) 95%
    -8.7 to 48.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.005
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 75.25
    Confidence Interval (2-Sided) 95%
    25.8 to 124.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.020
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 34.01
    Confidence Interval (2-Sided) 95%
    5.7 to 62.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.033
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 44.43
    Confidence Interval (2-Sided) 95%
    3.9 to 84.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.503
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 8.68
    Confidence Interval (2-Sided) 95%
    -17.3 to 34.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.016
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 38.23
    Confidence Interval (2-Sided) 95%
    7.8 to 68.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.043
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 40.76
    Confidence Interval (2-Sided) 95%
    1.4 to 80.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 86.66
    Confidence Interval (2-Sided) 95%
    41.5 to 131.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.203
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 31.08
    Confidence Interval (2-Sided) 95%
    -17.5 to 79.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.019
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 68.47
    Confidence Interval (2-Sided) 95%
    12.7 to 124.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.042
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 31.83
    Confidence Interval (2-Sided) 95%
    1.3 to 62.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.121
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 38.14
    Confidence Interval (2-Sided) 95%
    -11.0 to 87.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    11. Secondary Outcome
    Title Change From Baseline in Mean Number of Leakage Episodes Per Day
    Description For each participant, the mean number of leakage episodes per day (during day & night time) was calculated using all available/non-missing number of leakage episodes for the 2 measuring days in the weekend diary during day & night time. If the number of leakage episodes was recorded on 1 single day in the 7-day diary during day & night time, the mean number of leakage episodes per day during day & night time is equal to the total number of leakage episodes recorded that day during day & night time. If no leakage episodes were recorded on any day of the weekend diary during day & night time, the mean number of leakage episodes per day was zero. Participants who did not report any leakage episode during the visit were imputed with a '0' for that visit. A valid bladder diary day in the weekend diary was any e-diary day for which ≥1 catheterized volume >0 mL was recorded with complete date and time.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 39 17
    Change at Week 2
    0.35
    (9.35)
    -0.53
    (1.30)
    Change at Week 4
    -1.14
    (3.39)
    -0.87
    (1.68)
    Change at Week 8
    1.16
    (16.11)
    -0.65
    (1.78)
    Change at Week 12
    0.37
    (13.03)
    -0.65
    (1.55)
    Change at Week 24
    0.18
    (10.05)
    -0.75
    (1.28)
    Change at Week 36
    -1.98
    (4.33)
    -0.81
    (1.47)
    Change at Week 52
    -0.94
    (2.96)
    -1.12
    (1.97)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.818
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.35
    Confidence Interval (2-Sided) 95%
    -2.7 to 3.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.114
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.53
    Confidence Interval (2-Sided) 95%
    -1.2 to 0.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.052
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -1.14
    Confidence Interval (2-Sided) 95%
    -2.3 to 0.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.066
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.87
    Confidence Interval (2-Sided) 95%
    -1.8 to 0.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.674
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.16
    Confidence Interval (2-Sided) 95%
    -4.4 to 6.7
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.278
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.65
    Confidence Interval (2-Sided) 95%
    -1.9 to 0.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.871
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.37
    Confidence Interval (2-Sided) 95%
    -4.2 to 5.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.153
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.65
    Confidence Interval (2-Sided) 95%
    -1.6 to 0.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.922
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.18
    Confidence Interval (2-Sided) 95%
    -3.5 to 3.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.047
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.75
    Confidence Interval (2-Sided) 95%
    -1.5 to 0.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.018
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -1.98
    Confidence Interval (2-Sided) 95%
    -3.6 to -0.4
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.070
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.81
    Confidence Interval (2-Sided) 95%
    -1.7 to 0.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.083
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -0.94
    Confidence Interval (2-Sided) 95%
    -2.0 to 0.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.064
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -1.12
    Confidence Interval (2-Sided) 95%
    -2.3 to 0.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    12. Secondary Outcome
    Title Change From Baseline in Number of Dry Days Per 7 Days (Day and Night Time)
    Description Dry days were defined as leakage-free days, this included day and night time. Participants recorded dry days in the 7-day diary. Dry days were calculated as follows: Ddry was the number of valid diary days where the response to the question 'Did you leak between this catheterization and the last one' was 'No' each time a new catheterization was entered in the e-diary during the day & night time period. Dwet was the number of valid diary days where the response to the question 'Did you leak between this catheterization and the last one' was 'Yes' for at least one catheterization entered during the day and night time period. If (Ddry + Dwet) > 3, the number of dry days per 7 days was calculated as Ddry/(Ddry + Dwet) x 7, otherwise the value was missing.
    Time Frame Baseline and weeks 2, 4, 8, 12, 24, 36 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 43 24
    Change at Week 2
    0.34
    (0.91)
    0.82
    (1.90)
    Change at Week 4
    0.68
    (1.69)
    1.36
    (1.91)
    Change at Week 8
    1.14
    (2.15)
    2.26
    (2.48)
    Change at Week 12
    1.31
    (2.50)
    1.93
    (2.46)
    Change at Week 24
    1.34
    (2.18)
    2.17
    (2.38)
    Change at Week 36
    1.33
    (2.43)
    1.88
    (2.13)
    Change at Week 52
    1.38
    (2.65)
    2.14
    (2.51)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 2 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.018
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.34
    Confidence Interval (2-Sided) 95%
    0.1 to 0.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 2 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.045
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.82
    Confidence Interval (2-Sided) 95%
    0.0 to 1.6
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 4 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.013
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.68
    Confidence Interval (2-Sided) 95%
    0.1 to 1.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 4 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.36
    Confidence Interval (2-Sided) 95%
    0.6 to 2.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 8 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.14
    Confidence Interval (2-Sided) 95%
    0.5 to 1.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 8 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 2.26
    Confidence Interval (2-Sided) 95%
    1.2 to 3.3
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 7
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 12 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.31
    Confidence Interval (2-Sided) 95%
    0.5 to 2.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 8
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 12 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.93
    Confidence Interval (2-Sided) 95%
    0.9 to 3.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 9
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.34
    Confidence Interval (2-Sided) 95%
    0.7 to 2.0
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 10
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 2.17
    Confidence Interval (2-Sided) 95%
    1.2 to 3.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 11
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 36 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.33
    Confidence Interval (2-Sided) 95%
    0.5 to 2.1
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 12
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 36 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.88
    Confidence Interval (2-Sided) 95%
    1.0 to 2.8
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 13
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.002
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.38
    Confidence Interval (2-Sided) 95%
    0.5 to 2.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 14
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value <0.001
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 2.14
    Confidence Interval (2-Sided) 95%
    1.1 to 3.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    13. Secondary Outcome
    Title Change From Baseline in Pediatric Incontinence Questionnaire (PIN-Q) Score
    Description PIN-Q measured quality of life via an e-diary. Total score ranged from 0 (no effect) to 80 (worst effect); decrease in score indicated improvement. Total score was 20x average of individual PinQ items, the 20 Likert scales were converted to a score: Items 6 & 17; 0: "No" to 4: "Definitely" was used; & For the other 18 items; 0: "No" to 4: "All the time" was used. Expectation that questionnaires had limited missing values; if answers >2 questions were missing, total score was not calculated & was missing. Individual item scores were directly imputed. Change from baseline to each post-baseline visit in the total score was post-baseline visit value minus baseline value. If either baseline or post-baseline visit value was missing, change from baseline was missing. If change was: <0, improvement between 2 time-points; =0, no change between 2 time points; >0, worsening between 2 time points.
    Time Frame Baseline and weeks 24 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 24 21
    Change at Week 24
    2.04
    (10.53)
    -4.90
    (14.13)
    Change at Week 52
    1.30
    (12.17)
    -6.79
    (14.50)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.352
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 2.04
    Confidence Interval (2-Sided) 95%
    -2.40 to 6.49
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.127
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -4.90
    Confidence Interval (2-Sided) 95%
    -11.34 to 1.53
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.613
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 1.30
    Confidence Interval (2-Sided) 95%
    -3.96 to 6.57
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.056
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value -6.79
    Confidence Interval (2-Sided) 95%
    -13.78 to 0.20
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    14. Secondary Outcome
    Title Change From Baseline in Patient Global Impression of Severity Scale (PGI-S)
    Description The PGI-S was an answer to the question: "How did you feel about your bladder condition during the past 3 days?" Participants evaluated their recent condition as "Really Bad"(0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) &"Really Good" (4). An increase indicated improvement. The total score ranged from 0 to 4, where higher scores indicated improvement.The change from baseline to each postbaseline visit in the PGI-S score is the value at the post-baseline visit minus the value at the baseline visit. If either the baseline or the post-baseline visit value is missing, the change from baseline was missing. A positive change indicated an improvement while a negative change indicated a worsening.
    Time Frame Baseline and weeks 24 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 25 22
    Change at Week 24
    0.36
    (1.22)
    0.64
    (1.00)
    Change at Week 52
    0.42
    (1.21)
    0.95
    (1.18)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 24 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.153
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.36
    Confidence Interval (2-Sided) 95%
    -0.14 to 0.86
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 24 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.007
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.64
    Confidence Interval (2-Sided) 95%
    0.19 to 1.08
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Children (3 to < 12 Years)
    Comments Change From Baseline at Week 52 - Children
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.106
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.42
    Confidence Interval (2-Sided) 95%
    -0.10 to 0.93
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Adolescents (12 to < 18 Years)
    Comments Change From Baseline at Week 52 - Adolescents
    Type of Statistical Test Other
    Comments
    Statistical Test of Hypothesis p-Value 0.003
    Comments From a 2-sided paired t-test, testing the null hypothesis that change from baseline is equal to 0.
    Method t-test, 2 sided
    Comments
    Method of Estimation Estimation Parameter Mean Difference (Net)
    Estimated Value 0.95
    Confidence Interval (2-Sided) 95%
    0.38 to 1.51
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    15. Secondary Outcome
    Title Number of Participants With Clinician Global Impression of Change (CGI-C)
    Description The Clinician Global Impression of Change (CGI-C) is a 7 point scale that required the clinician to assess how much the participant's overall bladder symptoms since the start of the study on day 1 has improved or worsened and rated as: very much improved (1); much improved (2); minimally improved (3); no change (4); minimally worse (5); much worse (6); or very much worse (7). The total score range from 1-7, where lower scores indicated improvement.
    Time Frame Weeks 24 and 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure and number analyzed signifies number of participants with available data at each time point.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 41 24
    Week 24 - Very much Improved
    6
    10.7%
    10
    28.6%
    Week 24 - Much Improved
    24
    42.9%
    7
    20%
    Week 24 - Minimally Improved
    6
    10.7%
    5
    14.3%
    Week 24 - No Change
    4
    7.1%
    1
    2.9%
    Week 24 - Minimally Worse
    1
    1.8%
    1
    2.9%
    Week 24 - Much Worse
    0
    0%
    0
    0%
    Week 24 - Very Much Worse
    0
    0%
    0
    0%
    Week 52 - Very Much Improved
    8
    14.3%
    9
    25.7%
    Week 52 - Much Improved
    23
    41.1%
    12
    34.3%
    Week 52 - Minimally Improved
    5
    8.9%
    1
    2.9%
    Week 52 - No Change
    2
    3.6%
    0
    0%
    Week 52 - Minimally Worse
    0
    0%
    0
    0%
    Week 52 - Much Worse
    0
    0%
    1
    2.9%
    Week 52 - Very Much Worse
    0
    0%
    0
    0%
    16. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Tablets at Week 4
    Description Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).
    Time Frame Week 4

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 9 12
    Taste - Really bad
    0
    0%
    0
    0%
    Taste - Bad
    0
    0%
    0
    0%
    Taste - Not bad, not good
    5
    8.9%
    7
    20%
    Taste - Good
    3
    5.4%
    4
    11.4%
    Taste - Really good
    1
    1.8%
    1
    2.9%
    Swallow - Really difficult
    0
    0%
    0
    0%
    Swallow - Difficult
    0
    0%
    0
    0%
    Swallow - Not difficult, not easy
    1
    1.8%
    0
    0%
    Swallow - Easy
    3
    5.4%
    7
    20%
    Swallow - Really easy
    5
    8.9%
    5
    14.3%
    17. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Tablets at Week 24
    Description Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).
    Time Frame Week 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 17 23
    Taste - Really bad
    1
    1.8%
    0
    0%
    Taste - Bad
    2
    3.6%
    0
    0%
    Taste - Not bad, not good
    6
    10.7%
    15
    42.9%
    Taste - Good
    4
    7.1%
    6
    17.1%
    Taste - Really good
    4
    7.1%
    2
    5.7%
    Swallow - Really difficult
    0
    0%
    0
    0%
    Swallow - Difficult
    0
    0%
    0
    0%
    Swallow - Not difficult, not easy
    2
    3.6%
    2
    5.7%
    Swallow - Easy
    3
    5.4%
    10
    28.6%
    Swallow - Really easy
    12
    21.4%
    11
    31.4%
    18. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Tablets at Week 52
    Description Participants evaluated the taste of the study medication/tablets by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the swallow of the study medication/tablets by ticking one of the following categories: "Really Difficult" (0), "Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) and "Really Easy" (4).
    Time Frame Week 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 17 20
    Taste - Really bad
    0
    0%
    0
    0%
    Taste - Bad
    0
    0%
    0
    0%
    Taste - Not bad, not good
    8
    14.3%
    16
    45.7%
    Taste - Good
    6
    10.7%
    2
    5.7%
    Taste - Really good
    3
    5.4%
    2
    5.7%
    Swallow - Really difficult
    0
    0%
    0
    0%
    Swallow - Difficult
    0
    0%
    0
    0%
    Swallow - Not difficult, not easy
    2
    3.6%
    2
    5.7%
    Swallow - Easy
    4
    7.1%
    7
    20%
    Swallow - Really easy
    11
    19.6%
    11
    31.4%
    19. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Oral Suspension at Week 4
    Description Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).
    Time Frame Week 4

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 22 2
    Taste - Really bad
    1
    1.8%
    0
    0%
    Taste - Bad
    3
    5.4%
    0
    0%
    Taste - Not bad, not good
    4
    7.1%
    2
    5.7%
    Taste - Good
    11
    19.6%
    0
    0%
    Taste - Really good
    3
    5.4%
    0
    0%
    Smell - Really bad
    0
    0%
    0
    0%
    Smell - Bad
    1
    1.8%
    0
    0%
    Smell - Not bad, not good
    8
    14.3%
    1
    2.9%
    Smell - Good
    12
    21.4%
    1
    2.9%
    Smell - Really good
    1
    1.8%
    0
    0%
    Take - Really difficult
    0
    0%
    0
    0%
    Take - Difficult
    0
    0%
    0
    0%
    Take - Not difficult, not easy
    4
    7.1%
    0
    0%
    Take - Easy
    7
    12.5%
    1
    2.9%
    Take - Really Easy
    11
    19.6%
    1
    2.9%
    Prepare - Really difficult
    0
    0%
    0
    0%
    Prepare - Difficult
    0
    0%
    0
    0%
    Prepare - Not difficult, not easy
    2
    3.6%
    0
    0%
    Prepare - Easy
    12
    21.4%
    0
    0%
    Prepare - Really Easy
    8
    14.3%
    2
    5.7%
    20. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Oral Suspension at Week 24
    Description Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).
    Time Frame Week 24

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 23 2
    Taste - Really bad
    3
    5.4%
    0
    0%
    Taste - Bad
    1
    1.8%
    0
    0%
    Taste - Not bad, not good
    3
    5.4%
    2
    5.7%
    Taste - Good
    10
    17.9%
    0
    0%
    Taste - Really good
    6
    10.7%
    0
    0%
    Smell - Really bad
    2
    3.6%
    0
    0%
    Smell - Bad
    0
    0%
    0
    0%
    Smell - Not bad, not good
    8
    14.3%
    2
    5.7%
    Smell - Good
    11
    19.6%
    0
    0%
    Smell - Really good
    2
    3.6%
    0
    0%
    Take - Really difficult
    0
    0%
    0
    0%
    Take - Difficult
    2
    3.6%
    0
    0%
    Take - Not difficult, not easy
    2
    3.6%
    0
    0%
    Take - Easy
    6
    10.7%
    0
    0%
    Take - Really Easy
    13
    23.2%
    2
    5.7%
    Prepare - Really difficult
    0
    0%
    0
    0%
    Prepare - Difficult
    1
    1.8%
    0
    0%
    Prepare - Not difficult, not easy
    3
    5.4%
    0
    0%
    Prepare - Easy
    10
    17.9%
    2
    5.7%
    Prepare - Really Easy
    9
    16.1%
    0
    0%
    21. Secondary Outcome
    Title Number of Participants With Study Drug Acceptability for Oral Suspension at Week 52
    Description Participants evaluated the taste of the study medication/oral suspension by ticking 1 of the following categories:"Really Bad" (0), "Bad" (1), "Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the smell of the study medication/oral suspension by ticking 1 of the following categories: "Really Bad" (0), "Bad" (1),"Not Bad, Not Good" (2), "Good" (3) & "Really Good" (4). Participants evaluated the consumption and the preparation of the study medication/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4).
    Time Frame Week 52

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the FAS. Here, Overall Number of participants analyzed signifies number of participants evaluable for this outcome measure.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 22 2
    Taste - Really bad
    1
    1.8%
    0
    0%
    Taste - Bad
    2
    3.6%
    0
    0%
    Taste - Not bad, not good
    5
    8.9%
    2
    5.7%
    Taste - Good
    8
    14.3%
    0
    0%
    Taste - Really good
    6
    10.7%
    0
    0%
    Smell - Really bad
    2
    3.6%
    0
    0%
    Smell - Bad
    1
    1.8%
    0
    0%
    Smell - Not bad, not good
    5
    8.9%
    1
    2.9%
    Smell - Good
    12
    21.4%
    1
    2.9%
    Smell - Really good
    2
    3.6%
    0
    0%
    Take - Really difficult
    0
    0%
    0
    0%
    Take - Difficult
    1
    1.8%
    0
    0%
    Take - Not difficult, not easy
    3
    5.4%
    0
    0%
    Take - Easy
    7
    12.5%
    0
    0%
    Take - Really Easy
    11
    19.6%
    2
    5.7%
    Prepare - Really difficult
    0
    0%
    0
    0%
    Prepare - Difficult
    0
    0%
    0
    0%
    Prepare - Not difficult, not easy
    3
    5.4%
    0
    0%
    Prepare - Easy
    9
    16.1%
    2
    5.7%
    Prepare - Really Easy
    10
    17.9%
    0
    0%
    22. Secondary Outcome
    Title Number of Participants With Adverse Events (AEs)
    Description An AE was defined as any untoward medical occurrence in a participant who was given the study drug or who had undergone study procedures and did not necessarily have a causal relationship with this treatment. An AE could therefore be any unintended sign (including an abnormal laboratory finding), symptom or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. A treatment-emergent adverse event (TEAE) was defined as any AE with date of onset occurring on or after the first dose of study medication and up to the end of study.
    Time Frame From the first dose of study drug administration up to end-of-treatment (EoT) (up to week 52)

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the safety analysis set (SAF), which included of all participants who took at least 1 dose of study drug.
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    Measure Participants 55 31
    TEAE
    33
    58.9%
    18
    51.4%
    Drug-related TEAE
    8
    14.3%
    6
    17.1%
    Serious TEAE
    9
    16.1%
    5
    14.3%
    Drug-related Serious TEAE
    0
    0%
    0
    0%
    TEAE Leading to Death
    0
    0%
    0
    0%
    Drug-related TEAE Leading to Death
    0
    0%
    0
    0%
    TEAE Leading to Permanent Discontinuation
    3
    5.4%
    0
    0%
    Drug-related TEAE Leading to Permanent Disc.
    2
    3.6%
    0
    0%
    Death
    0
    0%
    0
    0%
    23. Secondary Outcome
    Title Maximum Plasma Concentration (Cmax) of Mirabegron
    Description Cmax was defined as the maximum plasma concentration of mirabegron.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the pharmacokinetic analysis set (PKAS), which consisted of the subset of the SAF for whom plasma concentration data were available to facilitate derivation of ≥ 1 pharmacokinetic parameter and for whom the time of the last dose prior to sampling was known.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [nanogram/milliliter (ng/mL)]
    9.386
    (NA)
    9.044
    (5.407)
    20.55
    (13.63)
    18.40
    (12.45)
    24. Secondary Outcome
    Title Time to Reach Maximum Plasma Concentration of Mirabegron Following Drug Administration (Tmax)
    Description Tmax was defined as the time to reach maximum plasma concentration following drug administration.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the PKAS.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [hours]
    3.000
    (NA)
    3.500
    (0.433)
    3.419
    (0.6608)
    3.635
    (1.101)
    25. Secondary Outcome
    Title Area Under the Plasma Concentration-Time Curve From Time Zero to 24 Hours (AUC24) for Mirabegron
    Description AUC (0-24) is the area under the plasma concentration versus time curve from time zero (pre-dose) to 24 hours post-dose.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the PKAS.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [nanogram*hour/milliliter]
    166.3
    (NA)
    137.8
    (53.07)
    310.1
    (163.1)
    291.6
    (171.8)
    26. Secondary Outcome
    Title Plasma Concentration of Mirabegron at the End of a Dosing Interval at Steady State (Ctrough)
    Description Ctrough was defined as the measured plasma concentration of mirabegron at the end of a dosing interval at steady state.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the PKAS.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [ng/mL]
    5.312
    (NA)
    4.114
    (1.186)
    9.024
    (5.149)
    8.888
    (5.588)
    27. Secondary Outcome
    Title Apparent Total Clearance of Mirabegron From Plasma After Oral Administration (CL/F)
    Description Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the PKAS.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [Liter/hour (L/hr)]
    192.5
    (NA)
    202.3
    (83.05)
    230.9
    (162)
    279.6
    (294.2)
    28. Secondary Outcome
    Title Apparent Volume of Distribution After Non-intravenous Administration (Vz/F) of Mirabegron
    Description Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.
    Time Frame A total of 4 samples were collected over 2 sampling days at 2 separate visits at any of week 4, 8, 12, 24, 36, or 52, at the following time points: Sampling day 1- Predose; Sampling day 2- Predose and 2 samples 2-5 hours postdose more than 1 hour apart.

    Outcome Measure Data

    Analysis Population Description
    The analysis population consisted of the PKAS.
    Arm/Group Title Children PED25 (PKAS) Adolescents PED25 (PKAS) Children PED50 (PKAS) Adolescents PED50 (PKAS)
    Arm/Group Description Participants aged 3 to < 12 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 25 mg at the time of PK sampling. Participants aged 3 to < 12 years who received pediatric equivalent dose of 50 mg at the time of PK sampling. Participants aged 12 to < 18 years who received pediatric equivalent dose of 50 mg at the time of PK sampling.
    Measure Participants 1 3 43 24
    Mean (Standard Deviation) [Liter]
    14450
    (NA)
    15380
    (6524)
    12150
    (5630)
    14770
    (6792)

    Adverse Events

    Time Frame From the first dose of study drug administration up to end-of-treatment (EoT) (up to week 52).
    Adverse Event Reporting Description
    Arm/Group Title Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Arm/Group Description Participants aged 3 to < 12 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT. Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight [PED25] on day 1. At weeks 2, 4 or 8, participant's were up-titrated to the pediatric equivalent dose of 50 mg in adults [PED50] based on the given dose titration criteria. Following week 24, participants stayed on their individual dose level until week 52 EOS or EOT.
    All Cause Mortality
    Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/55 (0%) 0/31 (0%)
    Serious Adverse Events
    Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 9/55 (16.4%) 5/31 (16.1%)
    Congenital, familial and genetic disorders
    Talipes 1/55 (1.8%) 1 0/31 (0%) 0
    Gastrointestinal disorders
    Colitis 0/55 (0%) 0 1/31 (3.2%) 1
    General disorders
    Device malfunction 2/55 (3.6%) 2 0/31 (0%) 0
    Pyrexia 0/55 (0%) 0 1/31 (3.2%) 1
    Infections and infestations
    Appendicitis 0/55 (0%) 0 1/31 (3.2%) 1
    Bronchitis 1/55 (1.8%) 1 0/31 (0%) 0
    Escherichia urinary tract infection 0/55 (0%) 0 1/31 (3.2%) 1
    Pneumonia bacterial 1/55 (1.8%) 1 0/31 (0%) 0
    Pyelonephritis acute 1/55 (1.8%) 1 0/31 (0%) 0
    Viral infection 1/55 (1.8%) 1 0/31 (0%) 0
    Injury, poisoning and procedural complications
    Shunt malfunction 0/55 (0%) 0 1/31 (3.2%) 1
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Benign neoplasm of skin 1/55 (1.8%) 1 0/31 (0%) 0
    Nervous system disorders
    Convulsion 0/55 (0%) 0 1/31 (3.2%) 1
    Hydrocephalus 0/55 (0%) 0 1/31 (3.2%) 1
    Renal and urinary disorders
    Urethral perforation 1/55 (1.8%) 1 0/31 (0%) 0
    Reproductive system and breast disorders
    Epididymitis 0/55 (0%) 0 1/31 (3.2%) 1
    Skin and subcutaneous tissue disorders
    Rash generalised 0/55 (0%) 0 1/31 (3.2%) 1
    Surgical and medical procedures
    Talipes correction 1/55 (1.8%) 1 0/31 (0%) 0
    Other (Not Including Serious) Adverse Events
    Children (3 to < 12 Years) Adolescents (12 to < 18 Years)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 17/55 (30.9%) 9/31 (29%)
    Gastrointestinal disorders
    Constipation 3/55 (5.5%) 3 1/31 (3.2%) 1
    General disorders
    Pyrexia 2/55 (3.6%) 2 2/31 (6.5%) 2
    Infections and infestations
    Escherichia urinary tract infection 3/55 (5.5%) 5 5/31 (16.1%) 6
    Nasopharyngitis 3/55 (5.5%) 3 2/31 (6.5%) 2
    Respiratory tract infection viral 4/55 (7.3%) 6 0/31 (0%) 0
    Upper respiratory tract infection 1/55 (1.8%) 1 3/31 (9.7%) 6
    Urinary tract infection 4/55 (7.3%) 5 0/31 (0%) 0
    Urinary tract infection bacterial 4/55 (7.3%) 5 1/31 (3.2%) 2

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    Institute and/or Principal Investigator may publish trial data generated at their specific study after Sponsor publication of multi-center data. Sponsor must receive a site's manuscript prior to publication for review and comment as specified in the Investigator Agreement.

    Results Point of Contact

    Name/Title Clinical Trial Disclosure
    Organization Astellas Pharma Europe B.V.
    Phone +44 (0)20 3379 8000
    Email Astellas.resultsdisclosure@astellas.com
    Responsible Party:
    Astellas Pharma Europe B.V.
    ClinicalTrials.gov Identifier:
    NCT02751931
    Other Study ID Numbers:
    • 178-CL-206A
    • 2015-002876-25
    First Posted:
    Apr 26, 2016
    Last Update Posted:
    Jun 28, 2021
    Last Verified:
    Jun 1, 2021