Long-term Safety Study of KarXT for Adolescents with Schizophrenia and KarXT plus KarX-EC for Children and Adolescents with Autism-Related Irritability

What this Trial Is About

Researchers are studying the long-term safety and tolerability of KarXT and KarX-EC in adolescents with schizophrenia and children and adolescents with autism-related irritability. This Phase 3, open-label study evaluates these treatments to better understand their effects over extended periods in these young populations. The trial is led by Karuna Therapeutics, Inc., a Bristol Myers Squibb company. Participants receive KarXT as the study drug, with dosing specified on certain days. The study includes two groups adolescents aged 13 to 17 years with schizophrenia receiving KarXT alone, and children and adolescents aged 5 to 17 years with irritability associated with autism spectrum disorder receiving KarXT combined with KarX-EC. The treatment period extends up to 54 weeks, during which safety and tolerability are closely monitored. During the study, participants are regularly evaluated for treatment-emergent adverse events, serious adverse events, and adverse events of special interest. Additional assessments include monitoring for procholinergic and anticholinergic symptoms, suicidal ideation and behavior, and movement disorders using validated rating scales. The total participation duration spans up to 54 weeks, encompassing treatment and observation to track long-term effects and safety outcomes.

A Study to Evaluate the Long-term Safety and Tolerability of KarXT and KarX-EC for the Treatment of Schizophrenia and Autism-Related Irritability in Adolescents, Respectively