Response to Treatment in 3q29 Deletion Syndrome-Associated Psychosis: A Mini-Review

Author:

Colijn Mark Ainsley

Abstract

3q29 deletion syndrome is characterized by various developmental abnormalities, medical issues, and neuropsychiatric symptoms, including psychosis. Although this syndrome may confer the greatest risk for schizophrenia of any copy number variation, response to antipsychotic medication has infrequently been described in the literature, and no reviews on the topic currently exist. As such, the purpose of this article was to review treatment response in 3q29 deletion syndrome-associated psychosis. A review of the literature was completed in December 2022 for English language articles that described treatment response to antipsychotic medications in affected individuals with schizophrenia-like presentations. Five articles that collectively described eight individuals were included. Four individuals had a poor treatment response to non-clozapine antipsychotic medications, three had a partial response, and one individual’s response to treatment was not described, despite having taken psychotropic medications of some kind. Additionally, three individuals received clozapine; one of whom partially responded, while two exhibited a good response. Treatment response did not clearly differ according to developmental history. 3q29 deletion syndrome may be associated with treatment-resistant psychotic symptoms. As such, clozapine therapy should be considered in such individuals, provided they meet criteria for treatment-resistant schizophrenia and no contraindications exist. However, this mini-review also highlights the need for more published case reports/series before more specific treatment recommendations can be made.

Publisher

S. Karger AG

Subject

Biological Psychiatry,Psychiatry and Mental health,Neuropsychology and Physiological Psychology

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