Xanomeline Tartrate

Clinical trials are studying Xanomeline Tartrate in several conditions, including schizophrenia, Alzheimer’s disease-related agitation and psychosis, bipolar I mania, and cognitive impairment in Alzheimer’s disease. These studies look at safety, effectiveness, and long-term tolerability in adults and, in one study, teenagers with schizophrenia.

Table of Contents

Trial overview

The listed studies are all Phase 3 trials, which means they are testing Xanomeline Tartrate in larger groups to learn more about benefit and safety.[1] Most of the studies are interventional, meaning researchers give a study treatment and compare results with placebo or another study group.[1]

The trials focus on several brain and mental health conditions, including schizophrenia, bipolar I mania, agitation related to Alzheimer’s disease, psychosis related to Alzheimer’s disease, and mild to moderate Alzheimer’s disease with cognitive impairment.[1]

Conditions being studied

Schizophrenia is being studied in adults and also in adolescents aged 13 to 17 years.[1] One schizophrenia study is for people with inadequately controlled symptoms, and another is a rollover study that follows people who finished an earlier trial.[1]

Bipolar-I disorder studies focus on manic episodes, including mania with mixed features, which means mania together with some depression symptoms.[1] One study looks at people taking lithium, valproate, or lamotrigine, which are mood-stabilizing medicines already used for bipolar disorder.[1]

Several studies also look at Alzheimer’s disease-related symptoms, including agitation, psychosis, and cognitive impairment in mild to moderate disease.[1] Agitation means restlessness or distress, while psychosis means symptoms such as hallucinations or delusions.[1]

How the trials are designed

Some studies compare Xanomeline Tartrate with placebo, which is a dummy treatment with no active medicine.[1] This helps researchers see whether changes are likely due to the study treatment rather than chance.[1]

Several trials test Xanomeline Tartrate as a single treatment, while others test it as an add-on treatment.[1] The Alzheimer’s disease agitation studies and the bipolar I mania study with mood stabilizers are examples of add-on or combination research.[1]

There are also open-label extension studies, which means participants and researchers know what treatment is being given and the main goal is to watch long-term safety and tolerability.[1]

What the trials measure

The studies use different rating tools depending on the condition being treated.[1] For schizophrenia, the PANSS total score is used to measure symptom change, and one study in Alzheimer’s disease psychosis uses the NPI-C hallucinations and delusions score.[1]

For mania in bipolar I disorder, the main measure is the YMRS, which tracks manic symptoms.[1] For agitation in Alzheimer’s disease, the trials use the CMAI-IPA total score to measure change in agitation.[1]

The cognitive impairment studies in Alzheimer’s disease use ADAS-Cog11 for thinking skills and CIBIC+ for global functioning, which means the person’s overall condition and day-to-day change.[1] Long-term safety studies mainly track treatment-emergent adverse events, which are side effects or medical problems that appear after treatment starts.[1]

Who can participate

Based on the trial data, the main groups are adults with schizophrenia, adults with bipolar I disorder, and adults with Alzheimer’s disease-related symptoms.[1] One study also includes adolescents aged 13 to 17 years with schizophrenia.[1]

Some studies are limited to people with a specific symptom pattern, such as mania with mixed features or psychosis associated with Alzheimer’s disease.[1] Other studies include people who have already completed a previous trial or those already taking mood stabilizers for bipolar I disorder.[1]

Trial status and size

Most of the listed trials are Authorised, which means they are approved to run in the source data provided.[1] Two schizophrenia studies are marked Completed, and one study in schizophrenia is marked Withdrawn.[1]

The enrollment numbers range from 166 participants in the adolescent schizophrenia study to 602 participants in the open-label extension study for agitation in Alzheimer’s disease.[1] These larger numbers help researchers collect more information about both benefit and safety over time.[1]

Key points for patients

  • Most studies are trying to see whether Xanomeline Tartrate improves symptoms better than placebo.[1]

  • The main conditions are schizophrenia, bipolar I mania, and Alzheimer’s disease-related agitation, psychosis, and cognitive impairment.[1]

  • Some studies look at short-term symptom change, while others focus on long-term safety and tolerability.[1]

  • Different rating scales are used depending on the condition, such as PANSS, YMRS, CMAI-IPA, NPI-C, ADAS-Cog11, and CIBIC+.[1]

  • The studies include adults, and one trial includes teenagers with schizophrenia.[1]

Trial IDPhaseCondition studiedStatusEnrollment
2025-520613-31-00Phase 3Agitation associated with Alzheimer’s diseaseAuthorised354
2024-520165-32-00Phase 3Bipolar-I mania or mania with mixed featuresAuthorised274
2024-520195-94-00Phase 3Bipolar-I mania or mania with mixed featuresAuthorised274
NCT06976203Phase 3Mild to moderate Alzheimer’s diseaseAuthorised586
2025-520612-34-00Phase 3Agitation associated with Alzheimer’s diseaseAuthorised354
NCT06585787Phase 3Psychosis associated with Alzheimer’s diseaseAuthorised358
NCT06929273Phase 3Mania or mania with mixed features in bipolar-I disorderAuthorised438
NCT06937229Phase 3Agitation associated with Alzheimer’s diseaseAuthorised602
NCT06976216Phase 3Mild to moderate Alzheimer’s diseaseAuthorised586
NCT05145413Phase 3SchizophreniaCompleted350
NCT05980949Phase 3Psychosis associated with Alzheimer’s diseaseAuthorised320
NCT05304767Phase 3SchizophreniaCompleted272
2025-521845-26-00Phase 3Bipolar-I mania or mania with mixed featuresAuthorised424
NCT07084831Phase 3SchizophreniaWithdrawn171
2025-523711-11-00Phase 3Schizophrenia in adolescents aged 13 to 17 yearsAuthorised166

Ongoing Clinical Trials on Xanomeline Tartrate

  • A study testing xanomeline tartrate and trospium chloride for treating agitation in patients with Alzheimer’s disease

    Recruiting

    1 1
    Investigated diseases:
    Czechia France Hungary Italy Poland
  • Study of KarXT (trospium chloride and xanomeline tartrate) and KarX-EC (xanomeline tartrate) for cognitive impairment in mild to moderate Alzheimer’s disease

    Recruiting

    1 1
    Investigated diseases:
    Finland France Germany Greece Italy The Netherlands +4
  • Study of xanomeline tartrate and trospium chloride combination for treating agitation in Alzheimer’s disease patients

    Recruiting

    1 1
    Investigated diseases:
    Bulgaria Croatia Greece Portugal Romania Spain
  • A study testing xanomeline tartrate and trospium chloride added to current treatment for adults with bipolar I disorder experiencing mania

    Recruiting

    1 1
    Bulgaria Denmark France Italy Poland Romania
  • Study of xanomeline tartrate and trospium chloride combination for cognitive impairment in people with mild to moderate Alzheimer’s disease

    Recruiting

    1 1
    Investigated diseases:
    Croatia Czechia Germany Greece Italy Poland +2
  • Long-term safety study of trospium chloride and xanomeline tartrate combination (KarXT) for treatment of manic episodes in adults with Bipolar I Disorder

    Recruiting

    1 1 1
    Bulgaria Croatia Hungary Italy Poland Romania +3
  • Study of trospium chloride and xanomeline tartrate (KarXT) for treating manic episodes in adults with bipolar I disorder

    Recruiting

    1 1
    Croatia Romania Slovakia Spain Sweden
  • Study of trospium chloride and xanomeline tartrate (KarXT) for treatment of manic episodes in adults with bipolar I disorder

    Recruiting

    1 1 1
    Bulgaria Hungary Poland
  • Study of trospium chloride and xanomeline tartrate (KarXT) in patients with psychosis associated with Alzheimer’s disease

    Recruiting

    1 1
    Investigated diseases:
    Belgium Bulgaria Croatia France Germany Greece +7
  • Study on Long-Term Safety of KarXT (Trospium Chloride, Xanomeline Tartrate) for Patients with Alzheimer’s-Related Psychosis

    Recruiting

    1 1 1
    Investigated diseases:
    Belgium Bulgaria Croatia Czechia France Germany +8

Glossary

  • Phase 3: A later stage of clinical research that studies a treatment in larger groups of people to learn how well it works and how safe it is.
  • Interventional study: A study where researchers give a treatment to participants and compare results with another treatment or placebo.
  • Placebo: A dummy treatment with no active medicine. It is used to compare results fairly.
  • Schizophrenia: A mental health condition that can affect how a person thinks, feels, and understands reality.
  • Bipolar I disorder: A mood disorder that can cause episodes of mania, where mood and energy are very high or very active.
  • Mania: A state of very high energy, fast thoughts, and unusual behavior or mood.
  • Mixed features: When signs of mania happen together with symptoms of depression.
  • Psychosis: A condition where a person may have hallucinations or delusions and may have trouble telling what is real.
  • Agitation: A state of restlessness, worry, or distress that can lead to pacing, shouting, or other upset behavior.
  • Cognitive impairment: Problems with thinking skills such as memory, attention, and understanding.
  • Long-term safety and tolerability: How safe a treatment is over a longer time and how well people are able to keep taking it.
  • Adverse events: Medical problems or side effects that happen during a study, whether or not they are caused by the treatment.

References