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A study of mirabegron in young children with neurogenic detrusor overactivity

Mirabegron in Young Children Study | Astellas Clinical Trials

A study to learn how [14C]ASP0367 is processed by the body in healthy men

14C ASP0367 In Males Study | Astellas Clinical Trials

A Study of Gilteritinib (ASP2215) Combined with Chemotherapy in Children, Adolescents and Young Adults with FMS-like Tyrosine Kinase 3 (FLT3)/Internal Tandem Duplication (ITD) Positive Relapsed or Refractory Acute Myeloid Leukemia (AML)

Gilteritnib and Chemotherapy Study | Astellas Clinical Trials

A study to find the best dose of ASP5354 to show lymph nodes in people with breast cancer or melanoma during surgery

ASP5354 to Show Lymph Nodes Study | Astellas Clinical Trials

A Study of Intravesical Enfortumab Vedotin For Treatment of Patients With Non-muscle Invasive Bladder Cancer (NMIBC)

Intravesical Enfortumab Vedotin for Bladder Cancer Study | Astellas Clinical Trials

A study of the safety and tolerability of ASP7317 in adults who are losing their clear, sharp central vision due to geographic atrophy secondary to dry age-related macular degeneration

ASP7317 for Geographic Atrophy Study | Astellas Clinical Trials

A Study to Assess the Antitumor Activity, Safety, Pharmacokinetics and Biomarkers of Zolbetuximab (IMAB362) in Participants with Claudin (CLDN) 18.2 Positive, Metastatic or Advanced Unresectable Gastric and Gastroesophageal Junction (GEJ) Adenocarcinoma

Zolbetuximab Study | Astellas Clinical Trials

A Study of an Intratumoral Oncolytic Virus in Patients with Advanced Metastatic Solid Tumors

Intratumoral Oncolytic Virus Study | Astellas Clinical Trials

A Study to Assess ASP0598 Otic Solution Following Topical Application in the Ear in Subjects with Chronic Tympanic Membrane Perforation (CTMP)

ASP058 Otic Solution Study | Astellas Clinical Trials

A study to evaluate ASP0367 in participants with primary mitochondrial myopathy

ASP0367 Study for Primary Mitochondrial Myopathy | Astellas Clinical Trials

A study of ASP2138 in adults with stomach cancer or pancreatic cancer

ASP2138 Study for Stomach or Pancreatic Cancer | Astellas Clinical Trials

A study about how ASP5354 affects the body in healthy adults and in adults whose kidneys do not work well

ASP5354 for Healthy Adults and Adults with Poor Kidneys | Astellas Clinical Trials

A Study for Subjects With Prostate Cancer Who Previously Participated in an Enzalutamide Clinical Study

Prostate Cancer Study for Previous Participation in Enzalutamide  | Astellas Clinical Trials

A Study to Assess the Efficacy and Safety of IMAB362 in Combination with Nab-Paclitaxel and Gemcitabine (Nab-P + GEM) as First Line Treatment in Subjects with Claudin 18.2 (CLDN18.2) Positive, Metastatic Pancreatic Adenocarcinoma

IMAB362 with Nab P and GEM Study for Pancreatic Cancer  | Astellas Clinical Trials

A study of gilteritinib, venetoclax and azacitidine as a combined treatment for people newly diagnosed with acute myeloid leukemia

Gilteritinib Venetoclax and Azacitidine Study for Acute Myeloid Leukemia | Astellas Clinical Trials

A Study Investigating the Safety, Tolerability and Efficacy of ASP7517 in Subjects with Relapsed/Refractory Acute Myeloid Leukemia (AML) and Relapsed/Refractory Higher Risk Myelodysplastic Syndrome (MDS)

ASP7517 for Acute Myeloid Leukimia | Astellas Clinical Trials

A study to evaluate ASP0367 in participants with reduced maximum oxygen uptake due to poor systemic oxygen extraction

ASP0367 for Reduced Maxiumum Oxygen Uptake Study | Astellas Clinical Trials

A study of ASP3082 in adults with previously treated solid tumors

ASP3082 for Solid Tumors Study | Astellas Clinical Trials

A Study of ASP1570 in adults with locally advanced or metastatic solid tumors

ASP1570 for Advanced or Metastatic Tumors Study | Astellas Clinical Trials

Study of ASP7517 Alone and with Pembrolizumab in Participants with Advanced Solid Tumors Expressing WT1 Antigen

ASP7517 with Pembrolizumab Study | Astellas Clinical Trials

A Safety Surveillance Study in Subjects with Macular Degenerative Disease Treated with Human Embryonic Stem Cell-derived Retinal Pigment Epithelial Cell Therapy

Macular Degenerative Disease Study | Astellas Clinical Trials

A study to evaluate mirabegron in pediatric participants from 5 to less than 18 years of age with overactive bladder (OAB)

Mirabegron Study in Children with OAB Study | Astellas Clinical Trials

Study of ASP0739 Alone and with Pembrolizumab in Advanced Solid Tumors with NY-ESO-1 Expression Participants

ASP0739 with Pembrolizumab Study For Solid Tumors| Astellas Clinical Trials

A study of ASP0367 in people with kidneys that do not work well and in healthy people

ASP0367 Study for Adults with Poor Kidneys | Astellas Clinical Trials

Enfortumab vedotin and pembrolizumab vs. chemotherapy alone in untreated locally advanced or metastatic urothelial cancer

Enfortumab Vedotin and Pembrolizumab vs Chemotherapy Study | Astellas Clinical Trials

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Access to anonymized individual participant level data will not be provided for this trial as it meets one or more of the exceptions described on www.clinicalstudydatarequest.com under “Sponsor Specific Details for Astellas.”

Participants aged 5 to < 12 years received initial dose of 25 milligram (mg) of mirabegron orally once daily based on weight (pediatric equivalent dose of 25 mg [PED25]) on day 1. Participants with a body weight ≥ 35 kilogram (kg) received tablet and participants with a body weight< 35 kg or those who could not be dosed with the tablet received an oral suspension. At week 4, participants were up-titrated to the pediatric equivalent dose of 50 mg [PED50] based on the given dose titration criteria up to week 12. Urotherapy continued throughout the study treatment period until week 12.

Participants aged 5 to < 12 years received placebo matched to mirabegron orally once daily based on weight PED25 on day 1. Participants with a body weight ≥ 35 kg received tablet and participants with a body weight< 35 kg or those who could not be dosed with the tablet received an oral suspension. At week 4, participants were up-titrated to the PED50 based on the given dose titration criteria up to week 12. Urotherapy continued throughout the study treatment period until week 12.

Participants aged 12 to < 18 years received initial dose of 25 mg of mirabegron orally once daily based on weight PED25 on day 1. Participants with a body weight ≥ 35 kg received tablet and participants with a body weight< 35 kg or those who could not be dosed with the tablet received an oral suspension. At week 4, participants were up-titrated to the PED50 based on the given dose titration criteria up to week 12. Urotherapy continued throughout the study treatment period until week 12.

Participants aged 12 to < 18 years received placebo matched to mirabegron orally once daily based on weight PED25 on day 1. Participants with a body weight ≥ 35 kg received tablet and participants with a body weight< 35 kg or those who could not be dosed with the tablet received an oral suspension. At week 4, participants were up-titrated to the PED50 based on the given dose titration criteria up to week 12. Urotherapy continued throughout the study treatment period until week 12.

Redacted CSR Synopsis English

Plain Language Summary English

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Redacted SAP

The purpose of this study was to evaluate the efficacy of mirabegron in children (5 to < 12 years of age) with OAB.

This study will also evaluated the safety and tolerability of mirabegron in pediatric participants with OAB and evaluated the pharmacokinetics after multiple dose administration of mirabegron in pediatric participants with OAB.

The study consisted of 3 periods (Screening period/urotherapy (4 weeks); Double-blind, placebo-controlled period (12 weeks); Follow-up period (2 weeks)) for a total duration of 18 weeks.

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Oral/ Oral Suspension: Participants with a body weight of ≥ 35 kg are to receive the tablet form of IP unless unable to swallow tablets and will be provided the oral suspension as an alternative. Participants with a body weight < 35 kg or those who cannot be dosed with the tablet will receive oral suspension.

Link to plain language summary of the study on the Trial Results Summaries website

Link to results and other applicable study documents on the Astellas Clinical Trials website

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A Phase 3, Double-blind, Randomized, Multicenter, Parallel Group, Placebo-controlled Sequential Dose Titration Study to Evaluate Efficacy, Safety and Pharmacokinetics of Mirabegron in Pediatric Subjects from 5 to < 18 Years of Age with Overactive Bladder

Participants will complete a 7-day bladder e-diary (2-day weekend and 5-day weekday diary), at least 7 days before each visit or TC. Micturition is defined as the passing of urine, in the 2-day weekend diary this will be recorded as the number of urination episodes where the volume of pee is greater than 0, in the 5-day weekday diary this will be recorded as the number of times the toilet is used during the day or night. The mean number of micturitions per 24 hours will be calculated by taking the sum of all urination episodes recorded in the participant diary, divided by the number of valid diary days.

Sex: Female, Male

Age Continuous

A micturition was defined as any voluntary act of passing urine (excluding incontinence only episodes). The mean number of micturitions per 24 hours was calculated as the average number of times a participant urinated per day during the 7-day micturition diary period.

Mean Number of Micturitions per 24 hour

Participants in the SAF with available data were analyzed.

Study Specific Characteristic

Race (NIH/OMB)

Ethnicity (NIH/OMB)

Safety Analysis Set (SAF) included all participants who received at least one dose of study drug.

A micturition was defined as any voluntary act of passing urine (excluding incontinence only episodes). The mean number of micturitions per 24 hours was calculated as the average number of times a participant urinated per day during the 7-day micturition diary period. The analysis was performed with imputation of missing visit 7/week 12 data using the last observation carried forward (LOCF) method.

Analysis of Covariance (ANCOVA) was performed with change from baseline at week 12 Last Observation Carried Forward (LOCF) as response, treatment group, sex and geographical region as fixed effects and the mean number of micturitions per 24 hours at baseline as covariate.

Full Analysis set: All participants who were randomized and received at least 1 dose of study drug and had at least 1 post baseline measurement for mean number of micturitions per 24 hours.

Change from baseline to week 12/EoT in mean number of micturitions per 24 hours for age group 5 to <12 years

Week 12 (without LOCF)

Week 12 (with LOCF)

Mean volume voided was derived from “Pee Volume” of the 2-day Weekend Episodic Diary. Mean volume voided per day was calculated as the sum of the volumes voided on that (valid diary) day divided by the number of times a volume was recorded on that day in the 2-day Weekend Episodic Diary. The analysis was performed with LOCF and without LOCF method.

ANCOVA was performed with change from baseline at week 12 without LOCF as response, treatment group, sex and geographical region as fixed effects and the mean volume voided per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

ANCOVA was performed with change from baseline at week 12 with LOCF as response, treatment group, sex and geographical region as fixed effects and the mean volume voided per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

Full Analysis Set with available data was analyzed.

Change from baseline to week 12/EoT in mean volume voided per 24 hours for age group 5 to <12 years

Week 12 (With LOCF)

MVV data was derived from “Pee Volume” of the 2-day Weekend Episodic Diary. The MVV was the largest (non-zero) volume recorded over both of the 2 (valid) measuring days in the diary. The analysis was performed with LOCF and without LOCF method.

Change from baseline to week 12/EoT in maximum volume voided (MVV) for age group 5 to <12 years

A daytime incontinence episode was defined as the complaint of any involuntary leakage of urine during daytime hours. Daytime was defined as time between waking up in the morning and going to sleep later the same day or next day. The mean number of daytime incontinence episodes per 24 hours was calculated by taking the sum of all daytime urinary incontinence episodes recorded in the participant diary, divided by the number of valid diary days. The analysis was performed with LOCF and without LOCF method.

Change from baseline to week 12/EoT in mean number of daytime incontinence episodes per 24 hours for age group 5 to <12 years

A nighttime incontinence episode was defined as the complaint of any involuntary leakage of urine during nighttime hours. Nightime was defined as time between between going to sleep on a day and waking up on the same or next day. The mean number of nighttime incontinence episodes per 24 hours was  calculated by taking the sum of all nighttime urinary incontinence episodes recorded in the participant diary, divided by the number of valid diary days. The analysis was performed with LOCF and without LOCF method.

ANCOVA as performed with change from baseline at week 12 without LOCF as response, treatment group, sex and geographical region as fixed effects and the mean number of daytime incontinence episodes per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

ANCOVA as performed with change from baseline at week 12 with LOCF as response, treatment group, sex and geographical region as fixed effects and the mean number of daytime incontinence episodes per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

Change from baseline to week 12/EoT in mean number of nighttime incontinence episodes per 24 hours for age group 5 to <12 years

For a week day the daytime micturitions was derived from “Number of Times using the Toilet During the Day” was entered into the 5-day Week Diary. For a weekend day the daytime micturitions was derived from the number of times a “Pee in Toilet” or a “Pee in Toilet and Leakage” was entered into the 2-day Weekend Episodic Diary between the time the participant woke-up (exclusive). The total number of micturitions per weekend day was equal to the total number of times, in the diary, an amount of pee was recorded during daytime for that day. For each participant, the mean number of daytime micturitions was calculated as:

Sum of the Number of Daytime Micturitions (per day) over the Valid Diary Days prior to Visit/Number of Valid Diary Days.

The analysis was performed with LOCF and without LOCF method.

ANCOVA was performed with change from baseline at week 12 without LOCF as response, treatment group, sex and geographical region as fixed effects and the mean number of daytime micturitions per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

ANCOVA was performed with change from baseline at week 12 with LOCF as response, treatment group, sex and geographical
region as fixed effects and the mean number of daytime micturitions per 24 hours at baseline as covariate. Statistically significant treatment difference at 0.10 level for mirabegron vs placebo.

Change from baseline to week 12/EoT in mean number of daytime micturitions per 24 hours for age group 5 to <12 years

A dry (incontinence free) day was defined as a day where the response is "Dry" to the question "How was your Day" and to "How was your Night". For a weekend day a "Dry (incontinence free) Day" was defined a day where no "New pee or leakage" was reported. Let Ddry be the number of valid diary days where the response to both questions was "Dry". Let Dwet be the number of valid diary days where the response to one of the two questions or to both questions was "Wet". If (Ddry + Dwet) > 3, the number of dry days per 7 days was calculated as Ddry/(Ddry + Dwet)* 7, otherwise the value was missing.
The analysis was performed with LOCF and without LOCF method.

Without LOCF: From a negative binomial regression model including treatment group, sex and region as factors and the log baseline rate of number of dry days (the log of the ratio of dry days at baseline and number of diary days at baseline) as covariate.

With LOCF: From a negative binomial regression model including treatment group, sex and region as factors and the log baseline rate of number of dry days (the log of the ratio of dry days at baseline and number of diary days at baseline) as covariate.

Change From Baseline to week 12/EoT in Number of dry (incontinence-free) days per 7 days for age group 5 to <12 years

Treatment emergent adverse events

Serious treatment emergent adverse events

An AE was any untoward medical occurrence in a participant administered a study drug and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore, be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of study drug whether or not considered related to the study drug. A serious adverse event (SAE) was defined as any untoward medical occurrence that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, resulted a congenital anomaly/birth defect or other medically important event. A TEAE was defined as an AE observed after starting administration of the study drug until 30 days after last dose.

Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious TEAEs

Week 4

Week 12

Week 14

Change from baseline in post void residual (PVR) volume

Taste: Really bad

Taste: Bad

Taste: Not Bad, Not Good

Taste: Good

Taste: Really Good

Swallow: Really Difficult

Swallow: Difficult

Swallow: Not Difficult, Not Easy

Swallow: Easy

Swallow: Really Easy

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

Number of Participants With Study Drug Acceptability and Palatability for Tablets

Taste: Really Bad

Smell: Really Bad

Smell: Bad

Smell: Not Bad, Not Good

Smell: Good

Smell: Really Good

Taking: Really Difficult

Taking: Difficult

Taking: Not Difficult, Not Easy

Taking: Easy

Taking: Really Easy

Preparing: Really Difficult

Preparing: Difficult

Preparing: Not Difficult, Not Easy

Preparing: Easy

Preparing: Really Easy

Participants evaluated the taste of the study drug/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 drug/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 of the study drug/oral suspension by ticking 1 of the following categories: "Really Difficult" (0),"Difficult" (1), "Not Difficult, Not Easy" (2), "Easy" (3) & "Really Easy" (4). Participants evaluated the preparation of the study drug/oral suspension by ticking 1 of the following categories: “Really Difficult” (0), “Difficult” (1), “Not Difficult, Not Easy” (2), “Easy” (3) & “Really Easy” (4).

Number of Participants With Study Drug Acceptability and Palatability for Oral Suspension

Maximum observed plasma concentration (Cmax).

PK parameter calculation was not possible due to low number of samples collected.