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Clozapine as a first- or second-line treatment in schizophrenia: a systematic review and meta-analysis.


ABSTRACT:

Objective

No consensus exists on whether clozapine should be prescribed in early stages of psychosis. This systematic review and meta-analysis therefore focus on the use of clozapine as first-line or second-line treatment in non-treatment-resistant patients.

Methods

Articles were eligible if they investigated clozapine compared to another antipsychotic as a first- or second-line treatment in non-treatment-resistant schizophrenia spectrum disorders (SCZ) patients and provided data on treatment response. We performed random-effects meta-analyses.

Results

Fifteen articles were eligible for the systematic review (N = 314 subjects on clozapine and N = 800 on other antipsychotics). Our meta-analysis comparing clozapine to a miscellaneous group of antipsychotics revealed a significant benefit of clozapine (Hedges' g = 0.220, P = 0.026, 95% CI = 0.026-0.414), with no evidence of heterogeneity. In addition, a sensitivity analysis revealed a significant benefit of clozapine over risperidone (Hedges' g = 0.274, P = 0.030, 95% CI = 0.027-0.521).

Conclusion

The few eligible trials on this topic suggest that clozapine may be more effective than other antipsychotics when used as first- or second-line treatment. Only large clinical trials may comprehensively probe disease stage-dependent superiority of clozapine and investigate overall tolerability.

SUBMITTER: Okhuijsen-Pfeifer C 

PROVIDER: S-EPMC6175356 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Publications

Clozapine as a first- or second-line treatment in schizophrenia: a systematic review and meta-analysis.

Okhuijsen-Pfeifer C C   Huijsman E A H EAH   Hasan A A   Sommer I E C IEC   Leucht S S   Kahn R S RS   Luykx J J JJ  

Acta psychiatrica Scandinavica 20180914 4


<h4>Objective</h4>No consensus exists on whether clozapine should be prescribed in early stages of psychosis. This systematic review and meta-analysis therefore focus on the use of clozapine as first-line or second-line treatment in non-treatment-resistant patients.<h4>Methods</h4>Articles were eligible if they investigated clozapine compared to another antipsychotic as a first- or second-line treatment in non-treatment-resistant schizophrenia spectrum disorders (SCZ) patients and provided data  ...[more]

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