Skip to content

Safety, Tolerability, and Pharmacokinetics of KarXT and Dual-burst Release of Xanomeline With Immediate-release Trospium Chloride in 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

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06853171
Enrollment
24
Registered
2025-02-28
Start date
2025-04-29
Completion date
2025-07-22
Last updated
2025-08-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Psychiatric Disorders

Brief summary

This study is designed to assess the safety, tolerability, and pharmacokinetics (PK) of multiple doses and ratios of xanomeline and trospium chloride in an IR capsule (KarXT) and dual-burst release of xanomeline with immediate-release trospium chloride in adolescents with psychiatric disorders.

Interventions

DRUGKarXT

Specified dose on specified days

Specified dose on specified days

Sponsors

Bristol-Myers Squibb
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
13 Years to 17 Years
Healthy volunteers
No

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/

Design outcomes

Primary

MeasureTime frame
Number of participants with Adverse Events (AEs)Up to Day 43
Number of participants with Serioues AEs (SAEs)Up to Day 43
Number of participants with AEs of Special Interest (AESIs)Up to Day 43

Secondary

MeasureTime frameDescription
Area under the plasma concentration-time curve from time zero to time of last quantifiable concentration (AUC(0-T))Up to Day 15
Concentration at the end of a dosing interval (Ctau)Up to Day 15
Cmax accumulation index (AI_Cmax)Up to Day 15Ratio of maximum observed plasma concentration at steady-state on Day 5 to maximum observed plasma concentration after first dose
AUC accumulation index (AI_AUC)Up to Day 15Ratio of area under the concentration-time curve in 1 dosing interval at steady-state on Day 5 to area under the concentration-time curve in 1 dosing interval after first dose
Time of maximum observed plasma concentration (Tmax)Up to Day 15
Average concentration within a dosing interval at steady-state (Css-avg)Up to Day 15
Apparent total body clearance (CLT/F)Up to Day 15
Effective elimination half-life during dosing interval (T-HALF(eff))Up to Day 15
T-HALFeff based on AUC observed (T-HALFeff_AUC)Up to Day 15Effective elimination half-life based on degree of area under the plasma concentration-time curve accumulation observed
Ctau accumulation index (AI_Ctau)Up to Day 15Ratio of concentration at the end of the dosing interval at steady-state on Day 5 to maximum observed plasma concentration after first dose
Maximum observed plasma concentration (Cmax)Up to Day 15
Area under the concentration-time curve in 1 dosing interval (AUC(TAU))Up to Day 15

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026