The aim of this study is the observation, in psychiatric Italian real-world settings, of metabolic effects, effectiveness, side effects and therapeutic adherence in patients with schizophrenia who switched, for any reason (efficacy, safety, metabolic problems, therapeutic adherence or patient's request), from any mono-therapy or poly-therapy antipsychotic regimen to monotherapy with lurasidone or with one of the four most used atypical antipsychotics in Italy (aripiprazole, olanzapine, quetiapine, risperidone). Patient's past medical and psychiatric history of the last 12 months will be also evaluated.