Classification of Psychoses Based on Immunological Features: A Machine Learning Study in a Large Cohort of First-Episode and Chronic Patients

Paolo Enrico, Giuseppe Delvecchio, Nunzio Turtulici, Alessandro Pigoni, Filippo Maria Villa, Cinzia Perlini, Maria Gloria Rossetti, Marcella Bellani, Antonio Lasalvia, Chiara Bonetto, Paolo Scocco, Armando D'Agostino, Stefano Torresani, Massimiliano Imbesi, Francesca Bellini, Angela Veronese, Luisella Bocchio-Chiavetto, Massimo Gennarelli, Matteo Balestrieri, Gualtiero I. ColomboAnnamaria Finardi, Mirella Ruggeri, Roberto Furlan, Paolo Brambilla, GET UP Group. First, Prevent & Mandrake Studies

Research output: Contribution to journalArticlepeer-review

Abstract

For several years, the role of immune system in the pathophysiology of psychosis has been well-recognized, showing differences from the onset to chronic phases. Our study aims to implement a biomarker-based classification model suitable for the clinical management of psychotic patients. A machine learning algorithm was used to classify a cohort of 362 subjects, including 160 first-episode psychosis patients (FEP), 70 patients affected by chronic psychiatric disorders (schizophrenia, bipolar disorder, and major depressive disorder) with psychosis (CRO) and 132 health controls (HC), based on mRNA transcript levels of 56 immune genes. Models distinguished between FEP, CRO, and HC and between the subgroup of drug-free FEP and HC with a mean accuracy of 80.8% and 90.4%, respectively. Interestingly, by using the feature importance method, we identified some immune gene transcripts that contribute most to the classification accuracy, possibly giving new insights on the immunopathogenesis of psychosis. Therefore, our results suggest that our classification model has a high translational potential, which may pave the way for a personalized management of psychosis.

Original languageEnglish
Pages (from-to)1141-1155
Number of pages15
JournalSchizophrenia Bulletin
Volume47
Issue number4
DOIs
Publication statusPublished - Jul 1 2021

Keywords

  • immune biomarkers
  • immunity
  • machine learning
  • personalized medicine
  • psychosis
  • transcriptomics

ASJC Scopus subject areas

  • Psychiatry and Mental health

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