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Verebi, Camille; Nectoux, Juliette; Gorwood, Philip; Le Strat, Yann; Duriez, Philibert; Ramoz, Nicolas; Bienvenu, Thierry
Progress in neuro-psychopharmacology & biological psychiatry, 07/2023, Volume: 125Journal Article
Common mental disorders (CMDs) such as depression, anxiety and post-traumatic stress disorders account for 40% of the global burden of disease. In most psychiatric disorders, both diagnosis and monitoring can be challenging, frequently requiring long-term investigation and follow-up. The discovery of better methods to facilitate accurate and fast diagnosis and monitoring of psychiatric disorders is therefore crucial. Circulating nucleic acids (CNAs) are among these new tools. CNAs (DNA or RNA) can be found circulating in body biofluids, and can be isolated from biological samples such as plasma. They can serve as biomarkers for diagnosis and prognoses. They appear to be promising for disorders (such as psychiatric disorders) that involve organs or structures that are difficult to assess. This review presents an accurate assessment of the current literature about the use of plasma and serum cell-free DNA (cfDNA) as biomarkers for several aspects of psychiatric disorders: diagnosis, prognosis, treatment response, and monitor disease progression. For each psychiatric disorder, we examine the effect sizes to give insights on the efficacy of CNAs as biomarkers. The global effect size for plasma nuclear and mitochondrial cfDNA studies was generally moderate for psychiatric disorders. In addition, we discuss future applications of CNAs and particularly cfDNA as non-invasive biomarkers for these diseases. •The effect size of plasma nucleic acids studies in this literature review is moderate for psychiatric disorders.•A slight level change of circulating nucleic acids could be sufficient to induce effects and influence related pathways.•Circulating nucleic acids hold promise as prognostic biomarkers for the monitoring of psychiatric disorders.
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