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Meta-Analysis
. 2024 Oct 8;24(1):663.
doi: 10.1186/s12888-024-06104-4.

Pharmacogenomics-assisted treatment versus standard of care in schizophrenia: a systematic review and meta-analysis

Affiliations
Meta-Analysis

Pharmacogenomics-assisted treatment versus standard of care in schizophrenia: a systematic review and meta-analysis

Saibal Das et al. BMC Psychiatry. .

Abstract

Background: Pharmacogenomic (PGx) factors significantly influence how patients respond to antipsychotic medications This systematic review was performed to synthesize the clinical utility of PGx-assisted treatment versus standard of care in schizophrenia.

Methods: PubMed, Embase, and Cochrane CENTRAL databases were searched for randomized controlled trials (RCTs) from inception till June 2024 that had compared the clinical utility of PGx-assisted intervention as compared to the standard of care in schizophrenia. The primary outcome was safety, and the secondary outcomes were efficacy and medication adherence. Pooled standardized mean differences (SMD) along with a 95% confidence interval (CI) were calculated (random-effects model) wherever feasible.

Results: A total of 18,821 studies were screened, and five were included for review. All the RCTs had a high risk of bias. Four studies included the commonly used antipsychotics. Three studies reported negative outcomes (safety, efficacy, and medication adherence) and two reported positive outcomes (safety) using different scales. In the meta-analysis, there were significant differences in the total Udvalg for Kliniske Undersogelser Side-Effect Rating scale score [SMD 0.95 (95% CI: 0.76-1.13), p < 0.001); I2 = 0%] and the total Positive and Negative Syndrome Scale score [SMD 10.65 (95% CI: 2.37-18.93), p = 0.01); I2 = 100%] between the PGx-assisted treatment and standard of care arms. However, the results were inconsistent, and the certainty of evidence (GRADE criteria) was very low.

Conclusion: Current evidence on the clinical utility of PGx-assisted treatment in schizophrenia is limited and inconsistent and further evidence is required in this regard.

Keywords: Antipsychotic; Pharmacogenomics (PGx); Precision medicine; Schizophrenia; Therapeutic drug monitoring.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Study flowchart
Fig. 2
Fig. 2
Forest plot showing the difference in the total Udvalg for Kliniske Undersogelser Side-Effect Rating scale score (A) and the Positive and Negative Syndrome Scale score (B) between the pharmacogenomics (PGx)-assisted treatment group and the standard of care group. For Jurgens, et al., 2020 study, the data of the PGx-assisted treatment and the standard of care groups were included. The median and interquartile range were approximated to mean and standard deviation

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