{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Depression",
    "query": {
      "condition": "Refractory Depression"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 264,
    "total_pages": 27,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Depression&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T06:11:40.821Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04080778",
      "title": "Magnetic Seizure Therapy in Bipolar Depression (MST-BpD) and Treatment Resistant Depression (MST-TRD)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bipolar Disorder"
      ],
      "interventions": [
        {
          "name": "magnetic seizure therapy (MST)",
          "type": "DEVICE"
        },
        {
          "name": "electroconvulsive therapy (ECT)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Joao L. DeQuevedo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "22 Years to 85 Years"
      },
      "enrollment_count": 60,
      "start_date": "2024-08-24",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-12-03",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04080778"
    },
    {
      "nct_id": "NCT05870540",
      "title": "BPL-003 Efficacy and Safety in Treatment Resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "BPL-003",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Beckley Psytech Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 196,
      "start_date": "2023-09-14",
      "completion_date": "2025-07-03",
      "has_results": false,
      "last_update_posted_date": "2025-07-18",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 19,
      "location_summary": "Birmingham, Alabama • Rogers, Arkansas • San Diego, California + 15 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Rogers",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05870540"
    },
    {
      "nct_id": "NCT03573349",
      "title": "Ketamine Associated ACC GABA and Glutamate Change and Depression Remission:",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Major Depressive Disorder",
        "Treatment Resistant Depression",
        "Bipolar Depression"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 18,
      "start_date": "2019-01-03",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03573349"
    },
    {
      "nct_id": "NCT06096207",
      "title": "DBS for Depression",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Medtronic SenSight Directional DBS lead",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2023-10-18",
      "completion_date": "2038-10-18",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Queens, New York",
      "locations": [
        {
          "city": "Queens",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06096207"
    },
    {
      "nct_id": "NCT06682299",
      "title": "Maintenance TMS in Treatment Resistant Depression",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Treatment Resistant Depression (TRD)"
      ],
      "interventions": [
        {
          "name": "Transmagnetic Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "Electroconvulsive Therapy",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Austin Messner",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 1,
      "start_date": "2025-04-17",
      "completion_date": "2025-06-26",
      "has_results": true,
      "last_update_posted_date": "2026-05-12",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06682299"
    },
    {
      "nct_id": "NCT02360280",
      "title": "Efficacy of Repeated Ketamine Infusions for Treatment-resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Treatment-resistant Depression"
      ],
      "interventions": [
        {
          "name": "ketamine",
          "type": "DRUG"
        },
        {
          "name": "midazolam",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 62,
      "start_date": "2015-04-01",
      "completion_date": "2019-03-19",
      "has_results": true,
      "last_update_posted_date": "2024-04-25",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02360280"
    },
    {
      "nct_id": "NCT05905705",
      "title": "Disruptions of Brain Networks and Sleep by Electroconvulsive Therapy",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Electroencephalography (EEG)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Quantitative Measurements of Sleep Microstructure",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 50,
      "start_date": "2023-03-07",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05905705"
    },
    {
      "nct_id": "NCT01598324",
      "title": "Functional and Neurochemical Correlates of Treatment Response in Major Depressive Disorder",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Treatment-Resistant Depression"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 1,
      "start_date": "2012-07",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-08-13",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01598324"
    },
    {
      "nct_id": "NCT02422186",
      "title": "A Study to Evaluate the Efficacy, Safety, and Tolerability of Intranasal Esketamine Plus an Oral Antidepressant in Elderly Participants With Treatment-resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Depressive Disorder, Treatment-Resistant"
      ],
      "interventions": [
        {
          "name": "Esketamine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Duloxetine (Oral Antidepressant)",
          "type": "DRUG"
        },
        {
          "name": "Escitalopram (Oral Antidepressant)",
          "type": "DRUG"
        },
        {
          "name": "Sertraline (Oral Antidepressant)",
          "type": "DRUG"
        },
        {
          "name": "Venlafaxine Extended Release (XR) (New Antidepressant)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 139,
      "start_date": "2015-08-20",
      "completion_date": "2017-08-10",
      "has_results": true,
      "last_update_posted_date": "2025-04-29",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 15,
      "location_summary": "San Diego, California • New Haven, Connecticut • Miami, Florida + 12 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02422186"
    },
    {
      "nct_id": "NCT01898429",
      "title": "Deep Brain Stimulation (DBS) for Treatment-Resistant Depression (TRD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Treatment Resistant Depression",
        "Depressive Disorder, Treatment-Resistant",
        "Depression, Bipolar"
      ],
      "interventions": [
        {
          "name": "SCC DBS",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Paul Holtzheimer",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "22 Years to 70 Years"
      },
      "enrollment_count": 5,
      "start_date": "2013-07",
      "completion_date": "2016-12",
      "has_results": true,
      "last_update_posted_date": "2019-07-25",
      "last_synced_at": "2026-07-22T06:11:40.821Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01898429"
    }
  ]
}