IL6 and schizophrenia: Currently, the diagnosis of schizophrenia is based on clinical symptoms, and there is no standard diagnostic biomarker that allows early recognition of this disease, while cytokines such as IL-6, TNF-α, IL-1ß, and IL-RA can be used as potential biomarkers for early detection of at least a subgroup of schizophrenic patients (118, 127, 128).