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. 2025 Jun 19;15(6):105409. doi: 10.5498/wjp.v15.i6.105409

Table 2.

Key findings on the effects based on the positive and negative syndrome scale scores from completed 5-week clinical trials

Variable EMERGENT-1[43]
EMERGENT-2[14]
EMERGENT-3[47]
KarXT vs placebo
P value
KarXT vs placebo
P value
KarXT vs placebo
P value
Number of patients (modified intention-to-treat population) 83 vs 87 - 117 vs 119 - 114 vs 120 -
Least-squares mean change from baseline in PANSS total score (points) -17.4 vs -5.9 < 0.001 -21.2 vs -11.6 < 0.0001 -20.6 vs -12.2 < 0.0001
Least-squares mean change from baseline in PANSS positive symptom subscore (points) -5.6 vs -2.4 < 0.001 -6.8 vs -3.9 < 0.0001 -7.1 vs -3.6 < 0.0001
Least-squares mean change from baseline in PANSS negative symptom subscore (points) -3.2 vs -0.9 < 0.001 -3.4 vs -1.6 0.0055 -2.7 vs -1.8 0.1224
Least-squares mean change from baseline in PANSS Marder negative symptom subscore (points) -3.9 vs -1.3 < 0.001 -4.2 vs -2.0 0.0022 -3.5 vs -2.7 0.1957

Studies included patients aged 18-60 years (EMERGENT-1) or up to 65 years (EMERGENT-2 and EMERGENT-3) with a primary diagnosis of schizophrenia according to Diagnostic and Statistical Manual of Mental Disorders, fifth edition, experiencing an acute exacerbation or relapse of psychosis requiring hospitalization with onset within 2 months before screening. Participants were required to be free of antipsychotic medication for a specified period before the baseline assessment: In EMERGENT-1, at least two weeks for oral antipsychotics or 1.5 injection cycles for long-acting injectables (LAI); and in EMERGENT-2 and EMERGENT-3, at least five half-lives or one week (whichever was longer) for oral antipsychotics, or at least 12 weeks for LAI (24 weeks for paliperidone palmitate). KarXT: Xanomeline/trospium chloride; PANSS: Positive and Negative Syndrome Scale.