**Study Overview**: This research is looking at how safe and effective a drug called KarXT is for treating schizophrenia in teenagers. Schizophrenia is a mental health condition that can cause people to see or hear things that aren't there or believe things that aren't true. **Eligibility**: To join, teenagers must have schizophrenia confirmed by doctors and score certain numbers on special tests like the *Positive and Negative Syndrome Scale* (PANSS) and *Clinical Global Impression-Severity* (CGI-S). They can't have other major illnesses or health problems that might affect the study. **Key Points**: - **Participation**: Teens will be assessed over several visits to make sure they're eligible and to monitor the treatment's effect. - **Risks**: Some health issues may exclude participation, such as heart problems or other serious diseases. - **Commitment**: It requires regular check-ups and specific health tests. KarXT is being studied to ensure it's both helpful and safe for young people with schizophrenia. This study is important because it could lead to better treatment options for teenagers with this condition.

Check with your doctor to see if joining is right for you.