A Phase 2/3, Open-label, Baseline-controlled, Multicenter, Long-term Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of Vibegron in Pediatric Subjects 2 Years to < 18 Years of Age With Neurogenic Detrusor Overactivity (NDO) on Clean Intermittent Catheterization (CIC)

Inclusion Criteria: * Male or female participants, age 2 years to \< 18 years at the Screening Visit. Participants age 12 to \< 18 years (Cohort 1) must weigh at least 29.5 kilograms (kg). Participants age 2 to \< 12 years (Cohort 2) must weigh at least 11 kg. * Participant has been diagnosed with NDO due to one of the following: spinal dysraphism, which includes spina bifida (eg, myelomeningocele, meningocele) and all forms of tethered cord; or acquired NDO from a spinal cord injury or spinal cord surgery, with the injury/surgery having occurred at least 6 months prior to the Screening Visit…