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Your journey
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More info
You can access this
clinical trial
if you have
Major Depression
and you are
between 18 and 60
years old
The primary goal of this phase is to monitor the long-term effects.
The treatment is already on the market.
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The purpose

Although treatment guidelines manifest that antidepressant response usually appear with a delay of several weeks and suggest that treatment should be changed if a partial response has not occurred after 4~6 week, these beliefs are no longer held by experts, and a new concept is raised that the first 2 weeks of treatment may be a useful strategy for improving the management of depression. New evidence indicates that early treatment response can be predicted with high sensitivity after 2 weeks of treatment in patients with major depressive disorder (MDD). Early improvement not only predicted response or remission, but also that lack of improvement was associated with little chance of response if the treatment strategy remained unchanged. The criterion of a 20% score reduction has been chosen as an early indicator of improvement because it can be reliably measured in clinical trials and translates into a clinically relevant change in the severity of depressive symptoms. Antidepressants that enhance both serotonergic and noradrenergic neurotransmission may be more effective than selective serotonin reuptake inhibitors (SSRIs) for acute-phase therapy of major depressive disorder. As a noradrenergic and specific serotonergic antidepressant, the antidepressive mechanism of mirtazapine is quite superior to SSRI and in particular has been suggested to have a faster onset of action than SSRIs in MDD patients. The aim of this study is to provide physicians with further information regarding early improvement and the effectiveness of mirtazapine combined with a SSRI antidepressant therapy in nonresponders.

Provided treatments

  • Drug: mirtazapine
  • Drug: paroxetine 20mg QD

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01458626. The sponsor of the trial is Capital Medical University and it is looking for 525 volunteers for the current phase.
Official trial title:
A Double-blind, Active-controlled, Randomized Study Comparing Mirtazapine Combined With Paroxetine or Paroxetine Monotherapy in Patients With Major Depressive Patients Without Early Improvement in the First 2 Weeks