Among the 13 chemokines studied, a 7 week treatment with OLZ resulted in an increase in two homeostatic chemokines, BCL (CXCL13) and MDC (CCL22), and two inflammatory ones, KC (CXCL1) and TARC (CCL17), all of which were shown to take part in schizophrenia and other mental diseases. This evidence concerns the gene CCL22 and schizophrenia.