Compare new KarX and KarT pill versions with KarXT and KarX-EC and check food effects in healthy adults

Phase 1, 3-Part, Open-label Study to Evaluate the Pharmacokinetics of Novel KarX (BMS-986519) and KarT (BMS-986520) Prototypes Versus the KarXT (BMS-986510) and KarX-EC (BMS-986519) Reference Following Single Doses, and to Explore the Effect of Food After Multiple Doses of Selected Prototypes in Healthy Adult Participants

Phase 1 Interventional Bristol-Myers Squibb · NCT07063342

This test will compare new KarX and KarT medication prototypes against the existing KarXT and KarX-EC formulations and see how eating affects selected prototypes when taken multiple times by healthy adults.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment72 (estimated)
Ages18 Years to 55 Years
SexAll
SponsorBristol-Myers Squibb Industry-sponsored
Locations1 site (Nottingham, Nottinghamshire)
Trial IDNCT07063342 on ClinicalTrials.gov

What this trial studies

This Phase 1 interventional study enrolls healthy adult volunteers to receive single doses of novel KarX and KarT prototypes alongside the KarXT and KarX-EC reference formulations to compare pharmacokinetics and tolerability. Selected prototypes will then be given repeatedly to explore the effect of food on absorption and safety. The protocol will include clinical assessments, blood sampling for drug levels, and monitoring for adverse events. Findings will inform which formulations move forward and help set dosing recommendations for later trials.

Who should consider this trial

Good fit: Healthy adults with BMI between 18.0 and 32.0 kg/m2 who meet other protocol criteria are the intended participants.

Not a fit: People with active medical conditions, those who are pregnant or breastfeeding, or individuals outside the required BMI and protocol criteria are unlikely to receive benefit from participating.

Why it matters

Potential benefit: If successful, the study could identify formulations with improved absorption or tolerability and provide dosing guidance that benefits future patients.

How similar studies have performed: Formulation comparison and food-effect studies are standard in drug development and have often succeeded in identifying optimized dosing and formulations, and KarXT has previously been studied clinically.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* BMI between 18.0 kg/m2 to 32.0 kg/m2, inclusive, at screening.
* Other protocol-defined Inclusion/Exclusion criteria apply.

Where this trial is running

Nottingham, Nottinghamshire

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 Healthy Volunteers
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.