Switching to Duloxetine in Patients With Depression (ARDENT)

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Status and phase

Phase 4


Depressive Disorder, Major


Drug: Duloxetine

Study type


Funder types



F1J-CR-S022 (Other Identifier)

Details and patient eligibility


The purpose of this study is to help answer the following research question: Whether switching to duloxetine improves depressed mood when current treatment did not work well for patients with depression.


242 patients




18+ years old


No Healthy Volunteers

Inclusion criteria

  • Male or female outpatients aged 18 years or older who meet criteria for Major Depressive Disorder (MDD).
  • Currently receiving a selective serotonin reuptake inhibitor (SSRI) or a serotonin-norepinephrine reuptake inhibitor (SNRI) class of antidepressant for at least a month for the treatment of depression.
  • Females of child-bearing potential (not surgically sterilized and between menarche and 1 year postmenopause) to test negative for pregnancy based on a urine pregnancy test and to agree to use a reliable method of birth control.

Exclusion criteria

  • Women who are pregnant or plan to be pregnant or are breastfeeding.
  • To have received treatment within the last 30 days with a drug that has not received regulatory approval for any indication.
  • Diagnosed with treatment resistant depression.
  • History of bipolar disorder, schizophrenia, or other psychotic disorders.
  • To have previously taken duloxetine that didn't work.
  • Judged to be at serious suicidal risk in the opinion of the investigator and/or score >=3 on Item 3 (suicide) of the 17-Item Hamilton Depression Rating Scale (HAMD-17) at screening (Visit 1) or baseline (Visit 2).
  • A serious medical illness that may need treatment during the study.
  • Taking certain medications that are not allowed in this study.
  • To have a history of alcohol and/or drug abuse or dependence within the past year.
  • To have uncontrolled narrow-angle glaucoma.
  • To have allergic reactions to many medicines.
  • To have undergone "shock" therapy (Electroconvulsive Therapy) or "magnet" treatment (Transcranial Magnetic Stimulation) within the past year.
  • To initiate "talk therapy" (psychotherapy) just before or during the study.
  • To have chronic pain and you have been taking medicine for it for the last 6 months.
  • To have certain liver diseases.
  • To have kidney disease or undergoing dialysis.
  • Abnormal thyroid stimulating hormone (TSH) concentration.

Trial design

242 participants in 1 patient group

Experimental group
Patients who met criteria in Study Period I (screening) were treated with duloxetine 60 milligrams (mg) once daily (QD) in an open-label manner for 4 weeks (Study Period II). Study Period II was considered the acute therapy period. Study Period III was a 4-week interval where patients who did not respond during Study Period II had their duloxetine doses optimized to 120 mg.
Drug: Duloxetine

Trial contacts and locations



Data sourced from clinicaltrials.gov

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