RNASE3 and schizophrenia: Among these biomarkers, eosinophil cationic protein (ECP), traditionally recognized for its involvement in eosinophil-mediated immune responses, has gained attention as a potential player in the neuroinflammatory pathways implicated in schizophrenia.[5] ECP, a cytotoxic protein predominantly released by eosinophils upon activation, exhibits antimicrobial properties and regulatory effects on immune cells.