Voice-Based Biomarkers: a Novel Approach to Monitoring and Predicting Schizophrenia Relapses

Four blood tests are prospectively realized per patient during the study to measure the plasma concentration of antipsychotics (primary treatment: risperidone/paliperidone, olanzapine or aripiprazole). These blood samples are taken at the inclusion visit, at the follow-up visits 2 and 4 months after the inclusion visit, then at the end-of-study visit 6 months after the inclusion visit.

"Voice interviews carried out via the Callyope application: they consist of a series of tests, divided into two parts: Structured tasks (same content for each participant) and Semi-structured tasks (content varies for each participant).~The simultaneous analysis of several speech tasks allows us to break down the different stages of speech production and the important factors that influence its achievement.~In addition, patients will complete self-questionnaires via the application. Finally, lifestyle habits (sleep duration and number of steps) will be recorded via the application.~These different tests will be carried out on the application at the inclusion visit (M0), then every month (M1, M2, M3, M4, M5) until the end of study visit (M6)."