Psychopharmacotherapy for Depressive Patients

This is prospective randomized controlled trials (RCT) to evaluate clinical impact of antidepressant monotherapy vs stepwise psychopharmacotherapy in patients with major depressive disorders, stratified by multimodal serum biomarker scores. Participants will be predicted treatment response based on the multimodal serum biomarker scores at baseline, will be categorized into good and poor treatment responders and then randomly assigned to two groups: stepwise pharmacotherapy group and antidepressant monotherapy group. The hypothesis is that in the good treatment responder, the depression remission will be achieved irrespective of treatment modality (stepwise pharmacotherapy or antidepressant monotherapy) group while in poor treatment responders, the treatment response of stepwise pharmacotherapy will be superior to those of antidepressant monotherapy.