Testing KarXT for schizophrenia
Official title: 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
A Phase 3 Multicenter, Open-label Study to Assess the Long-term Safety and Tolerability of KarXT in Adolescents (13 to 17 Years of Age) With Schizophrenia and KarXT+KarX-EC in Children and Adolescents (5 to 17 Years of Age) With Irritability Associated With Autism Spectrum Disorder
Interventions
KarXT
Specified dose on specified days
Canadian Sites (5)
Local Institution - 0138
Calgary, Alberta, Canada
Local Institution - 0111
Edmonton, Alberta, Canada
Local Institution - 0110
Kingston, Ontario, Canada
Local Institution - 0113
Toronto, Ontario, Canada
Local Institution - 0112
Montreal, Quebec, Canada
Eligibility Criteria
See who this study is looking for10 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +\- Participants must have completed the double-blindDouble-blindNeither you nor the study team knows which group you are in.Read more → treatment period (ie, Visit 8) of Study CN0120020 or the double-blind treatment period (ie, Week 8) of Study CN0120044 or CN0120045, without an adverse eventAdverse eventAny medical problem that happens during a study, whether or not the treatment caused it.Read more → (AE) that, in the investigatorPrincipal investigatorThe doctor or researcher responsible for running the study at a site.Read more →'s opinion, may indicate an unacceptable safety risk.
- +Exclusion CriteriaExclusion criteriaThe things that would prevent someone from taking part.Read more →
- +Participants must not have a significant risk of committing violent acts, serious self-harm, or attempting suicide based on history or routine psychiatric status examination, or those who are homicidal or are considered to be a high risk to others, or who have an answer of "Yes" on Questions 4 or 5 on the suicidal ideation section of the "Since Last Visit" version of the C-SSRS at baselineBaselineYour starting measurements, taken before treatment begins.Read more → (Visit 1). Nonsuicidal, self-injurious behavior is not exclusionary.
- +Participants must not have any clinically significant abnormality including any finding(s) from the physical examination, vital signs, ECG at the end of treatment visit of Study CN0120020, CN0120044, or CN0120045 that the investigator, in consultation with the SponsorSponsorThe organisation responsible for the study overall.Read more → Medical Monitor, would jeopardize the safety of the participant.
- +Participants must not have either a systolic blood pressure (sBP) or diastolic blood pressure (dBP) meeting criteria for stage 2 hypertension (HTN), regardless of the presence or absence of symptoms.
- +Other protocolProtocolThe detailed plan a study must follow.Read more →-defined InclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more →/Exclusion criteria apply.
Exclusion
- −Participants must not have a significant risk of committing violent acts, serious self-harm, or attempting suicide based on history or routine psychiatric status examination, or those who are homicidal or are considered to be a high risk to others, or who have an answer of "Yes" on Questions 4 or 5 on the suicidal ideation section of the "Since Last Visit" version of the C-SSRS at baselineBaselineYour starting measurements, taken before treatment begins.Read more → (Visit 1). Nonsuicidal, self-injurious behavior is not exclusionary.
- −Participants must not have any clinically significant abnormality including any finding(s) from the physical examination, vital signs, ECG at the end of treatment visit of Study CN0120020, CN0120044, or CN0120045 that the investigatorPrincipal investigatorThe doctor or researcher responsible for running the study at a site.Read more →, in consultation with the SponsorSponsorThe organisation responsible for the study overall.Read more → Medical Monitor, would jeopardize the safety of the participant.
- −Participants must not have either a systolic blood pressure (sBP) or diastolic blood pressure (dBP) meeting criteria for stage 2 hypertension (HTN), regardless of the presence or absence of symptoms.
- −Other protocolProtocolThe detailed plan a study must follow.Read more →-defined InclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more →/Exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → apply.
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 3Phase 3A large study comparing a treatment against the current standard.Read more → — a large study comparing this against the current standard, usually across many hospitals.
What is being given or done in this study: KarXT.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
- armsInterventionsModule.interventions[].name
How the study is run
Groups are assigned by the study team using set rules, rather than by chance.
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
There are 2 groups in this study.
From the trial registry
Built from this field:
- armsInterventionsModule.armGroups[].type
Who the study is looking for
The study lists an age range of 5 years to 17 years.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 400 people.
The study is currently expected to finish around March 2030.
The main measurement is taken over: Up to 54 weeks.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Number of participants with treatment emergent adverse eventsAdverse eventAny medical problem that happens during a study, whether or not the treatment caused it.Read more → (TEAEs) — measured over Up to 54 weeks.
Number of participants with adverse events of special interest (AESIs) — measured over Up to 54 weeks.
Number of participants with serious adverse eventsSerious adverse eventAn adverse event meeting a formal severity threshold, such as requiring hospital admission.Read more → (SAEs) — measured over Up to 54 weeks.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT07424404 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About KarXTDrug
Specified dose on specified days
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: an age range of 5 years to 17 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
Groups are assigned by the study team using set rules, rather than by chance.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists an age range of 5 years to 17 years.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: Up to 54 weeks.
The study as a whole is currently expected to finish around 2030-03-08.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 400 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists 10 locations, including: Calgary, Alberta, Canada; Edmonton, Alberta, Canada; Kingston, Ontario, Canada; Toronto, Ontario, Canada; Montreal, Quebec, Canada; Bloomfield Hills, Michigan, United States, and 4 more.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
The purpose of this study is 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
Other Sites (5)
Local Institution - 0152
Bloomfield Hills, Michigan, United States
Local Institution - 0061
Great Neck, New York, United States
Local Institution - 0156
Staten Island, New York, United States
Local Institution - 0151
The Bronx, New York, United States
Local Institution - 0155
Everett, Washington, United States
Think this trial might be right for you?
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.