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Sequential Multiple-Assignment Randomized Trials to Compare Antipsychotic Treatments (SMART-CAT) in first-episode
Xuan Li1, Xiaoyun Guo1, Xiaoduo Fan2
1First-episode Schizophrenia and Early Psychosis Program, Division of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China.
Schizophrenia Research
|December 6, 2020
Summary
The SMART-CAT trial evaluates sequential antipsychotic treatments for first-episode schizophrenia (FES). Clozapine shows potential superiority in non-responders, guiding optimal FES treatment algorithms.
Area of Science:
- Psychiatry
- Clinical Trials
- Pharmacology
Background:
- First-episode schizophrenia (FES) treatment requires effective sequential strategies.
- Optimal subsequent treatment steps for FES patients are not well-established.
- The Sequential Multiple-Assignment Randomized Trials comparing Antipsychotic Treatments (SMART-CAT) program addresses this gap.
Purpose of the Study:
- To determine the optimal sequential treatment for FES patients who do not respond to initial antipsychotic medication.
- To compare the efficacy of clozapine against other atypical antipsychotics in treatment-resistant FES patients.
- To provide evidence-based guidance for clinical decision-making in FES management.
Main Methods:
- A multicenter, randomized controlled trial involving 720 FES patients over 12 months.
- Sequential treatment phases with different antipsychotics (olanzapine, risperidone, amisulpride, aripiprazole, perphenazine, clozapine).
- Non-responders advance to subsequent treatment phases, including open-label trials and clozapine augmentation strategies.
Main Results:
- The primary outcome is the treatment efficacy rate, defined as a 40% reduction in PANSS scores.
- Hypothesizes superior efficacy of clozapine in patients refractory to initial treatments.
- Time to all-cause treatment failure will be assessed during a naturalistic follow-up phase.
Conclusions:
- SMART-CAT will offer crucial evidence for selecting antipsychotics in FES patients with treatment failure.
- The study aims to validate the efficacy and safety of early clozapine use compared to other SGAs.
- Findings are expected to inform an optimal, adaptive treatment algorithm for FES.
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