Study to Assess the Efficacy, Safety, and Tolerability of Valbenazine for the Treatment of Dyskinesia Due to Cerebral Palsy

Key Inclusion Criteria:

1. Medically confirmed diagnosis of DCP (that is, a hyperkinetic movement disorder dueto cerebral palsy [CP]) with choreiform movements.

2. Medical conditions are stable and expected to remain stable throughout the study.

Key Exclusion Criteria:

Participants will be excluded from the study if they meet any of the following criteria:

1. Are pregnant or breastfeeding.

2. Have a clinical diagnosis or history of dyskinesia due to condition other than CP.

3. Have inability to swallow soft foods, unless medications can be administered viagastrostomy/gastrojejunostomy tube.

4. Have any suicidal behavior or suicidal ideation in the year prior to screening or onDay 1.

5. Is a substance abuser of any compound.

6. Known history of long QT syndrome or cardiac tachyarrhythmia, or clinicallysignificant electrocardiogram (ECG) abnormalities.