{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Treatment-Refractory+Depression&page=2",
    "query": {
      "condition": "Treatment-Refractory Depression",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Treatment-Refractory+Depression&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T10:03:11.307Z",
  "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": "NCT04239963",
      "title": "Behavioral and Electrophysiological Effects of Ketamine in Treatment-Resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 60,
      "start_date": "2020-08-17",
      "completion_date": "2024-08-28",
      "has_results": false,
      "last_update_posted_date": "2024-10-30",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04239963"
    },
    {
      "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": "2025-06-27",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03573349"
    },
    {
      "nct_id": "NCT00837486",
      "title": "Reclaim Deep Brain Stimulation Clinical Study for Treatment-Resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Depression"
      ],
      "interventions": [
        {
          "name": "Reclaim™ DBS System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "MedtronicNeuro",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2009-02",
      "completion_date": "2013-04",
      "has_results": true,
      "last_update_posted_date": "2015-05-28",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 5,
      "location_summary": "Charlestown, Massachusetts • Cleveland, Ohio • Philadelphia, Pennsylvania + 2 more",
      "locations": [
        {
          "city": "Charlestown",
          "state": "Massachusetts"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00837486"
    },
    {
      "nct_id": "NCT03079297",
      "title": "Rapid Antidepressant Effects of Leucine",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "L-Leucine",
          "type": "DRUG"
        },
        {
          "name": "Maltodextrin",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 16,
      "start_date": "2017-03-09",
      "completion_date": "2021-10-04",
      "has_results": true,
      "last_update_posted_date": "2023-01-26",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03079297"
    },
    {
      "nct_id": "NCT05220410",
      "title": "The Safety and Efficacy of Psilocybin in Patients With Treatment-resistant Depression and Chronic Suicidal Ideation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Treatment Resistant Depression",
        "Suicidal Ideation"
      ],
      "interventions": [
        {
          "name": "Psilocybin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sheppard Pratt Health System",
      "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": "2022-03-28",
      "completion_date": "2025-05-12",
      "has_results": false,
      "last_update_posted_date": "2025-12-24",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05220410"
    },
    {
      "nct_id": "NCT06462196",
      "title": "Natural History of Depression, Bipolar Disorder and Suicide Risk",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Behavioral Symptoms",
        "Suicide",
        "Self-Injurious Behavior",
        "Sensory System Agents",
        "Analgesics",
        "Peripheral Nervous System Agents",
        "Physiological Effects of Drugs",
        "Anesthetics, Dissociative",
        "Anesthetics, General",
        "Anesthetics",
        "Central Nervous System Depressants",
        "Excitatory Amino Acid Antagonists",
        "Excitatory Amino Acid Agents",
        "Neurotransmitter Agents",
        "Molecular Mechanisms of Pharmacological Action",
        "Ketamine",
        "Depression, Unipolar",
        "Depressive Symptoms",
        "Treatment Resistant Depression",
        "Major Depressive Disorder",
        "Depression, Bipolar"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Mental Health (NIMH)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 500,
      "start_date": "2024-09-09",
      "completion_date": "2030-06-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06462196"
    },
    {
      "nct_id": "NCT02782104",
      "title": "A Long-term Safety Study of Esketamine Nasal Spray in Treatment-resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Depressive Disorder, Treatment-Resistant"
      ],
      "interventions": [
        {
          "name": "Esketamine Nasal Spray",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1148,
      "start_date": "2016-06-09",
      "completion_date": "2022-12-30",
      "has_results": true,
      "last_update_posted_date": "2025-04-29",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 51,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Garden Grove, California + 48 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02782104"
    },
    {
      "nct_id": "NCT01179009",
      "title": "Treatment Resistant Depression (Pilot)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Depressive Disorder, Treatment-Resistant"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "Clonidine",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": "2012-04",
      "completion_date": "2015-06-05",
      "has_results": true,
      "last_update_posted_date": "2023-09-15",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01179009"
    },
    {
      "nct_id": "NCT02181231",
      "title": "Buprenorphine Used With Treatment Resistant Depression in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Major Depressive Disorder",
        "Depression"
      ],
      "interventions": [
        {
          "name": "venlafaxine XR",
          "type": "DRUG"
        },
        {
          "name": "buprenorphine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2016-06-01",
      "completion_date": "2018-04-30",
      "has_results": true,
      "last_update_posted_date": "2019-06-04",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02181231"
    },
    {
      "nct_id": "NCT03610048",
      "title": "A Long Term Study of ALKS 5461 in the Treatment of Refractory Major Depressive Disorder (MDD)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Refractory Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "ALKS 5461",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alkermes, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "72 Years",
        "sex": "ALL",
        "summary": "18 Years to 72 Years"
      },
      "enrollment_count": 175,
      "start_date": "2018-08-09",
      "completion_date": "2020-05-01",
      "has_results": true,
      "last_update_posted_date": "2021-07-16",
      "last_synced_at": "2026-06-10T10:03:11.307Z",
      "location_count": 29,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Los Alamitos, California + 26 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Alamitos",
          "state": "California"
        },
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Pico Rivera",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03610048"
    }
  ]
}