RecruitingGenetic interventionNeural-Derived Plasma Exosomal MicroRNAs As Promising Novel Biomarkers for Suicidality and Treatment Outcome in AdolescentsThis study is dedicated to help identify biomarkers for depression and suicide. The purpose of the study is to better understand these links to improve medical and psychiatric care in the future. This research is also to test the effects of standard treatment of depression on improvement in depressive and suicidal behavior and on biomarkers (e.g. miRNA) for these disorders.