Assessing the safety and effects of a new medication for adolescents with psychiatric disorders

An Open-label, Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of KarXT and Dual-burst Release of Xanomeline With Immediate-release Trospium Chloride in Adolescents With Psychiatric Disorders

Phase 1 Interventional Bristol-Myers Squibb · NCT06853171

This study is testing a new medication for teenagers with mental health issues to see if it's safe and how well it works for them.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment36 (estimated)
Ages13 Years to 17 Years
SexAll
SponsorBristol-Myers Squibb Industry-sponsored
Locations4 sites (Little Rock, Arkansas and 3 other locations)
Trial IDNCT06853171 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety, tolerability, and pharmacokinetics of a new treatment combining xanomeline and trospium chloride in adolescents diagnosed with various psychiatric disorders. Participants will receive multiple doses of the medication to determine its effects and how well it is tolerated. The study aims to provide insights into the pharmacological profile of this combination therapy in a young population with specific mental health conditions.

Who should consider this trial

Good fit: Ideal candidates are adolescents diagnosed with schizophrenia, bipolar disorder, ADHD, Tourette's disorder, or autism spectrum disorder who are clinically stable.

Not a fit: Patients with significant neurological, metabolic, or other serious health conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could offer a new therapeutic option for adolescents suffering from psychiatric disorders.

How similar studies have performed: While this approach is novel, similar studies have explored pharmacological treatments for psychiatric disorders with varying degrees of success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* LAR (ie, legal guardian or caregiver) must have signed and dated an IRB/IEC-approved ICF in accordance with regulatory, local, and institutional guidelines.
* Confirmed Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) psychiatric diagnosis of 1 of the following:

  1. Schizophrenia or schizoaffective disorder
  2. Bipolar I or II disorder
  3. Attention-deficit/hyperactivity disorder (ADHD)
  4. Tourette's disorder
  5. Autism spectrum disorder (ASD)
* Participant is judged by the investigator to be clinically stable (eg, no psychiatric hospitalization within the last 6 months; no imminent risk of suicide or injury to self, others, or property).

Exclusion Criteria:

* Any clinically significant neurological, metabolic (including type 1 diabetes), hepatic, renal, hematological, pulmonary, cardiovascular, GI (including active obstructive GI disorders), carcinoma, active biliary disorders (eg, symptomatic gallstones) and/or urological disorder, congestive heart failure (uncontrolled), or CNS infection that would pose a risk to the participants if they were to participate in the study or that might confound the results of the study.
* Participant has a risk for suicidal behavior during the study, as determined by the investigator's clinical judgment and C-SSRS.
* eGFR \< 60 mL/min.
* History of Gilbert's Disease or history of liver disease (Child-Pugh class A and higher).
* History or high risk of urinary retention, gastric retention, or narrow-angle glaucoma.
* Participants with history of bladder stones or recurrent UTIs.
* Other protocol defined inclusion/exclusion criteria apply.

Where this trial is running

Little Rock, Arkansas and 3 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Psychiatric Disorders
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.