652. TRANSLATIONAL IMPLICATIONS OF ONGOING PROTOCOLS IN PRECISION PSYCHIATRY

Abstract Background Schizophrenia (SCZ), bipolar (BD) and major depression disorder (MDD) are severe psychiatric disorders that are challenging to treat, often leading to treatment resistance (TR). Aims & Objectives It is crucial to develop effective methods to identify and treat patients at risk of TR at an early stage in a personalized manner, considering their biological basis, their clinical and psychosocial characteristics. Effective translation of theoretical knowledge into clinical practice is essential for achieving this goal. Method We describe the methodology of the PROMPT project that aims at the development of a precision medicine algorithm that would help early detection of non-responder patients, who might be more prone to later develop TRD. In addition, we demonstrate other ongoing comprehensive protocols in Precision Psychiatry, such as the Horizon Europe funded PsychSTRATA consortium and other ongoing efforts in Precision Psychiatry. Results To address these objectives, the PROMPT project which is organized in 2 phases will involve 300 patients with MDD already recruited in phase 1, comprising 150 TRD and 150 responders. In phase 2, a new naturalistic cohort of 300 MDD patients will be recruited to assess, under real-world conditions, the capability of the algorithm to correctly predict the treatment outcomes. Moreover, in this phase a shared decision making (SDM) process in the context of pharmacogenetic testing is explored and various needs and perspectives of different stakeholders toward the use of predictive tools for MDD treatment to foster active participation and patients' empowerment are evaluated. This project represents a proof-of-concept study. In addition to this effort, the Psych-STRATA consortium addresses a major research gap in Precision Psychiatry through a seven-step approach. First, transdiagnostic biosignatures of SCZ, BD and MDD are identified by GWAS and multi-modal omics signatures associated with treatment outcome and TR (steps 1 and 2). In a next step (step 3), a randomized controlled intervention study is conducted to test the efficacy and safety of an early intensified pharmacological treatment. Following this RCT, a combined clinical and omics-based algorithm will be developed to estimate the risk for TR. This algorithm-based tool will be designed for early detection and management of TR (step 4). This algorithm will then be implemented into a framework of shared treatment decision-making with a novel mental health board (step 5). The final focus of the project is based on patient empowerment, dissemination and education (step 6) as well as the development of a software for fast, effective and individualized treatment decisions (step 7). Discussion & Conclusions While the proof-of-concept PROMPT study paves the way for predicting treatment response in depression using a multi-omics approach, the PsychSTRATA project has the potential to change the current trial and error treatment approach towards an evidence-based individualized treatment setting that takes TR risk into account at an early stage.