Trial Outcomes & Findings for A Study to Assess Efficacy and Safety of KarXT in Acutely Psychotic Hospitalized Adult Patients With Schizophrenia (EMERGENT-2) (NCT NCT04659161)

NCT ID: NCT04659161

Last Updated: 2023-12-12

Results Overview

The PANSS is a medical scale used for measuring symptom severity of participants with schizophrenia. The PANSS rating form contains 7 positive symptom scales, 7 negative system scales, and 16 general psychopathology symptom scales. Participants are rated from 1 to 7 on each symptom scale. It takes approximately 45 to 50 minutes to administer. The total score is the sum of all scales with a minimum score of 30 and a maximum score of 210. A decrease in PANSS total score correlates with an improvement in schizophrenia symptoms.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

252 participants

Primary outcome timeframe

Baseline and Week 5

Results posted on

2023-12-12

Participant Flow

The study was conducted in 21 study centers in the United States.

A total of 407 participants were screened, 252 were randomized, and 251 participants were treated.

Participant milestones

Participant milestones
Measure
KarXT
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Overall Study
STARTED
126
126
Overall Study
COMPLETED
94
100
Overall Study
NOT COMPLETED
32
26

Reasons for withdrawal

Reasons for withdrawal
Measure
KarXT
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Overall Study
Adverse Event
10
6
Overall Study
Withdrawal by Subject
13
12
Overall Study
Other
9
8

Baseline Characteristics

Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
KarXT
n=126 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=126 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Total
n=252 Participants
Total of all reporting groups
Age, Continuous
45.6 years
STANDARD_DEVIATION 10.42 • n=126 Participants
46.2 years
STANDARD_DEVIATION 10.78 • n=126 Participants
45.9 years
STANDARD_DEVIATION 10.58 • n=252 Participants
Sex: Female, Male
Female
31 Participants
n=126 Participants
31 Participants
n=126 Participants
62 Participants
n=252 Participants
Sex: Female, Male
Male
95 Participants
n=126 Participants
95 Participants
n=126 Participants
190 Participants
n=252 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
14 Participants
n=126 Participants
11 Participants
n=126 Participants
25 Participants
n=252 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
111 Participants
n=126 Participants
114 Participants
n=126 Participants
225 Participants
n=252 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
n=126 Participants
1 Participants
n=126 Participants
2 Participants
n=252 Participants
Race/Ethnicity, Customized
Black or African American
97 Participants
n=126 Participants
92 Participants
n=126 Participants
189 Participants
n=252 Participants
Race/Ethnicity, Customized
White
26 Participants
n=126 Participants
31 Participants
n=126 Participants
57 Participants
n=252 Participants
Race/Ethnicity, Customized
Asian
2 Participants
n=126 Participants
1 Participants
n=126 Participants
3 Participants
n=252 Participants
Race/Ethnicity, Customized
Other
1 Participants
n=126 Participants
2 Participants
n=126 Participants
3 Participants
n=252 Participants
Region of Enrollment
United States
126 participants
n=126 Participants
126 participants
n=126 Participants
252 participants
n=252 Participants
Baseline PANSS Total Score
98.3 units on a scale
STANDARD_DEVIATION 8.93 • n=126 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
97.9 units on a scale
STANDARD_DEVIATION 9.71 • n=125 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
98.1 units on a scale
STANDARD_DEVIATION 9.31 • n=251 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
Baseline PANSS Positive Score
26.8 units on a scale
STANDARD_DEVIATION 3.74 • n=126 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
26.7 units on a scale
STANDARD_DEVIATION 3.97 • n=125 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
26.7 units on a scale
STANDARD_DEVIATION 3.85 • n=251 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
Baseline PANSS Negative Score
22.9 units on a scale
STANDARD_DEVIATION 4.00 • n=126 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
22.9 units on a scale
STANDARD_DEVIATION 3.82 • n=125 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
22.9 units on a scale
STANDARD_DEVIATION 3.90 • n=251 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
Baseline PANSS General Psychopathology Score
48.6 units on a scale
STANDARD_DEVIATION 5.79 • n=126 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
48.4 units on a scale
STANDARD_DEVIATION 5.99 • n=125 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
48.5 units on a scale
STANDARD_DEVIATION 5.88 • n=251 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
Baseline PANSS Marder Factor Negative Score
22.9 units on a scale
STANDARD_DEVIATION 4.97 • n=126 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
22.5 units on a scale
STANDARD_DEVIATION 4.73 • n=125 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.
22.7 units on a scale
STANDARD_DEVIATION 4.85 • n=251 Participants • Measure Analysis Population Description: A total of 252 subjects were randomized (126 subjects in each group) at 21 sites, and a total of 251 subjects were treated (126 \[100.0%\] in the KarXT group and 125 \[99.2%\] in the placebo group) during the study.

PRIMARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group.

The PANSS is a medical scale used for measuring symptom severity of participants with schizophrenia. The PANSS rating form contains 7 positive symptom scales, 7 negative system scales, and 16 general psychopathology symptom scales. Participants are rated from 1 to 7 on each symptom scale. It takes approximately 45 to 50 minutes to administer. The total score is the sum of all scales with a minimum score of 30 and a maximum score of 210. A decrease in PANSS total score correlates with an improvement in schizophrenia symptoms.

Outcome measures

Outcome measures
Measure
KarXT
n=117 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=119 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Change From Baseline in Positive and Negative Syndrome Scale (PANSS) Total Score at Week 5
-21.2 score on a scale
Standard Deviation 1.652
-11.6 score on a scale
Standard Deviation 1.600

SECONDARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group.

The PANSS is a medical scale used for measuring symptom severity of participants with schizophrenia. The PANSS rating form contains 7 positive symptom scales, 7 negative system scales, and 16 general psychopathology symptom scales. Participants are rated from 1 to 7 on each symptom scale. For positive symptoms in schizophrenia, participants are rated from 1 to 7 on each symptom scale, with a minimum score of 7 and a maximum score of 49. A decrease in PANSS total score correlates with an improvement in schizophrenia symptoms.

Outcome measures

Outcome measures
Measure
KarXT
n=117 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=119 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Change From Baseline in Positive and Negative Syndrome Scale (PANSS) Positive Score at Week 5
-6.8 score on a scale
Standard Deviation 0.526
-3.9 score on a scale
Standard Deviation 0.512

SECONDARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group.

The PANSS rating form contains 7 positive symptom scales, 7 negative system scales, and 16 general psychopathology symptom scales. For negative symptoms in schizophrenia, participants are rated from 1 to 7 on each symptom scale, with a minimum score of 7 and a maximum score of 49. A decrease in PANSS total score correlates with an improvement in schizophrenia symptoms.

Outcome measures

Outcome measures
Measure
KarXT
n=117 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=119 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Change From Baseline in Positive and Negative Syndrome Scale (PANSS) Negative Score at Week 5
-3.4 score on a scale
Standard Deviation 0.479
-1.6 score on a scale
Standard Deviation 0.466

SECONDARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group.

The Marder Factor Negative Score is derived from the Positive and Negative Syndrome Scale (PANSS) and consists of the sum of 5 negative scales (N) and 2 general scales (G) (N1. Blunted affect; N2. Emotional withdrawal; N3. Poor rapport; N4. Passive/apathetic social withdrawal; N6. Lack of spontaneity; G7. Motor retardation; and G16. Active social avoidance), with a minimum score of 7 and a maximum score of 49. A decrease in PANSS total score correlates with an improvement in schizophrenia symptoms.

Outcome measures

Outcome measures
Measure
KarXT
n=117 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=119 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Change From Baseline in Positive and Negative Syndrome Scale (PANSS) Marder Factor Negative Score
-4.2 score on a scale
Standard Error 0.530
-2.0 score on a scale
Standard Error 0.517

SECONDARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group.

The CGI-S modified asked the clinician 1 question: "Considering your total clinical experience, how mentally ill is the participant at this time?" The clinician's answer rated on the following 7-point scale: 1 = normal, not at all ill; 2 = borderline mentally ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; 7 = among the most extremely ill participants.

Outcome measures

Outcome measures
Measure
KarXT
n=117 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=119 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Change From Baseline Clinical Global Impression - Severity (CGI-S) Score at Week 5
-1.2 score on a scale
Standard Error 0.103
-0.7 score on a scale
Standard Error 0.099

SECONDARY outcome

Timeframe: Baseline and Week 5

Population: The Modified Intent-to-Treat (MITT) population included all participants who were randomized, received at least one dose of study medication, and had a baseline and at least one post-baseline PANSS assessment. Here, the number of participants analyzed indicates participants who were evaluable for this measure at given time points for each group. The overall number of participants was analyzed (N) = number of subjects with Week 5 score.

The PANSS is a medical scale used for measuring symptom severity of participants with schizophrenia. The PANSS rating form contains 7 positive symptom scales, 7 negative system scales, and 16 general psychopathology symptom scales. Participants are rated from 1 to 7 on each symptom scale. The total score is the sum of all scales with a minimum score of 30 and a maximum score of 210. A PANSS responder is defined as a participant with at least a 30% change in PANSS total score compared to baseline at Week 5.

Outcome measures

Outcome measures
Measure
KarXT
n=93 Participants
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=99 Participants
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Percentage of Positive and Negative Syndrome Scale (PANSS) Responders (>=30% Change in PANSS Total Score) at Week 5
51 Participants
28 Participants

Adverse Events

KarXT

Serious events: 2 serious events
Other events: 95 other events
Deaths: 0 deaths

Placebo

Serious events: 2 serious events
Other events: 73 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
KarXT
n=126 participants at risk
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=125 participants at risk
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Infections and infestations
Appendicitis
0.00%
0/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Suicidal ideation
1.6%
2/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.00%
0/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Schizophrenia
0.00%
0/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.

Other adverse events

Other adverse events
Measure
KarXT
n=126 participants at risk
Participants received oral capsule KarXT (xanomeline/trospium chloride BID) in a treatment period of 5 weeks. Participants were started on a lead in dose of xanomeline 50 mg/trospium chloride 20 mg twice a day (BID) for the first 2 days followed by xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of Week 1 (Days 3 to 7). On Day 8, dosing was titrated upwards to xanomeline 125 mg/trospium chloride 30 mg BID unless the Participant was continuing to experience adverse events from the previous dose increase of xanomeline 100 mg/trospium chloride 20 mg BID. All Participants who were increased to xanomeline 125 mg/trospium chloride 30 mg BID, depending on clinical response and tolerability, had the option to return to xanomeline 100 mg/trospium chloride 20 mg BID for the remainder of the treatment period.
Placebo
n=125 participants at risk
Participants received the matching placebo to KarXT orally twice daily for a treatment period of 5 weeks.
Gastrointestinal disorders
Constipation
21.4%
27/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
10.4%
13/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Dyspepsia
19.0%
24/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
8.0%
10/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Nausea
19.0%
24/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
5.6%
7/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Vomiting
14.3%
18/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Abdominal discomfort
5.6%
7/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
3.2%
4/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Diarrhoea
5.6%
7/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
3.2%
4/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Dry mouth
4.8%
6/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
1.6%
2/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Gastrooesophageal reflux disease
6.3%
8/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.00%
0/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Abdominal pain
3.2%
4/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
1.6%
2/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Toothache
0.79%
1/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.0%
5/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Nervous system disorders
Headache
13.5%
17/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
12.0%
15/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Nervous system disorders
Dizziness
8.7%
11/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
3.2%
4/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Nervous system disorders
Somnolence
4.8%
6/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.0%
5/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Anxiety
4.8%
6/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.0%
5/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Agitation
1.6%
2/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
6.4%
8/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Insomnia
2.4%
3/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.8%
6/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Psychiatric disorders
Psychotic disorder
0.79%
1/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.8%
6/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Vascular disorders
Hypertension
9.5%
12/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Vascular disorders
Orthostatic hypotension
2.4%
3/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Investigations
Heart rate increased
3.2%
4/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.80%
1/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Musculoskeletal and connective tissue disorders
Arthralgia
0.00%
0/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
4.0%
5/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Musculoskeletal and connective tissue disorders
Back pain
1.6%
2/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
2.4%
3/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Eye disorders
Vision blurred
4.8%
6/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.00%
0/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Gastrointestinal disorders
Salivary hypersecretion
2.4%
3/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
0.00%
0/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
Cardiac disorders
Tachycardia
0.00%
0/126 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.
2.4%
3/125 • From the start of study drug administration up to Week 5.
The Safety population included all participants who received at least one dose of study medication.

Additional Information

Inder Kaul, VP Clinical Development

Karuna Therapeutics, Inc.

Phone: 1-888-783-0380

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: GT60