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

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.