This study is looking at how safe and easy a medicine called lumateperone is for kids aged 10 to 17 who have schizophrenia or bipolar disorder. Schizophrenia is a mental condition that can make people see or hear things that aren't there. Bipolar disorder is when someone has extreme mood swings, from very happy to very sad.

The study will last for 26 weeks. First, there's a 2-week screening period to check if participants can join. Then, during the open-label treatment period, everyone will take lumateperone once a day. After finishing the treatment, there’s a 2-week follow-up period to check on safety.

• Participants need to visit the clinic multiple times during the study.
• There might be some risks since it’s testing a medication.
• No compensation is mentioned for joining the study.

Kids must get permission from a parent or guardian to join, and they must agree to be part of the study, too. They should not have other main mental health issues besides schizophrenia or bipolar disorder, and should not be at a high risk for self-harm. The study helps to understand how lumateperone works in younger people.