{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Depression&page=4",
    "query": {
      "condition": "Refractory Depression",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 271,
    "total_pages": 28,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Depression&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Depression&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-29T22:24:30.261Z",
  "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": "NCT04739865",
      "title": "The Safety and Efficacy Of Psilocybin as an Adjunctive Therapy in Participants With Treatment Resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Psilocybin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "COMPASS Pathways",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2020-08-10",
      "completion_date": "2021-10-14",
      "has_results": true,
      "last_update_posted_date": "2023-11-09",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04739865"
    },
    {
      "nct_id": "NCT05228457",
      "title": "Intensive TMS for Bipolar Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bipolar Depression",
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Intensive intermittent theta-burst stimulation (iTBS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 34,
      "start_date": "2022-03-01",
      "completion_date": "2024-02-19",
      "has_results": true,
      "last_update_posted_date": "2025-03-12",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05228457"
    },
    {
      "nct_id": "NCT04608396",
      "title": "Mechanistic Evaluation of Response in TRD (MERIT)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Treatment Resistant Depression",
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "AXS-05",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Axsome Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2020-08-13",
      "completion_date": "2021-07-30",
      "has_results": false,
      "last_update_posted_date": "2022-07-12",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 20,
      "location_summary": "Little Rock, Arkansas • Redlands, California • Sherman Oaks, California + 17 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Redlands",
          "state": "California"
        },
        {
          "city": "Sherman Oaks",
          "state": "California"
        },
        {
          "city": "Upland",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04608396"
    },
    {
      "nct_id": "NCT01304147",
      "title": "Intranasal Ketamine in Treatment-Resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "James Murrough",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2011-10",
      "completion_date": "2014-10",
      "has_results": true,
      "last_update_posted_date": "2017-02-08",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01304147"
    },
    {
      "nct_id": "NCT02417064",
      "title": "A Study to Evaluate the Efficacy, Safety, and Tolerability of Fixed Doses of Intranasal Esketamine Plus an Oral Antidepressant in Adult Participants With Treatment-resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Treatment-resistant Depression"
      ],
      "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) (Oral Antidepressant)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 346,
      "start_date": "2015-08-10",
      "completion_date": "2018-02-20",
      "has_results": true,
      "last_update_posted_date": "2025-04-29",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 37,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Garden Grove, California + 34 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02417064"
    },
    {
      "nct_id": "NCT07716098",
      "title": "A Study of Esketamine Nasal Spray Versus Placebo Spray in Adult Participants With Treatment-resistant Depression",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Depressive Disorder, Treatment-Resistant"
      ],
      "interventions": [
        {
          "name": "Esketamine 56 mg",
          "type": "DRUG"
        },
        {
          "name": "Esketamine 84 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "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": 348,
      "start_date": "2026-07-23",
      "completion_date": "2029-09-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 7,
      "location_summary": "Redlands, California • San Diego, California • Marietta, Georgia + 4 more",
      "locations": [
        {
          "city": "Redlands",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        },
        {
          "city": "Skokie",
          "state": "Illinois"
        },
        {
          "city": "Cedarhurst",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07716098"
    },
    {
      "nct_id": "NCT04451135",
      "title": "CET- REM (Correlating ECT Response to EEG Markers)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "ECT",
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Electroencephalographic (EEG)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Quick Inventory of Depressive Symptomatology-Self Report (QIDS-SR16)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ictal Electroencephalographic (EEG) Measurements",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Post-Ictal Electroencephalographic (EEG) Suppression Measurements",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2020-10-09",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2025-12-31",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04451135"
    },
    {
      "nct_id": "NCT05773755",
      "title": "DBS for TRD With the Medtronic Percept PC",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Major Depressive Disorder",
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "Medtronic Percept PC DBS system",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Helen Mayberg, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "25 Years to 70 Years"
      },
      "enrollment_count": 20,
      "start_date": "2023-03-01",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05773755"
    },
    {
      "nct_id": "NCT06965569",
      "title": "Multiple Ascending Dose Phase 1 Study of ALA-3000",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Treatment Resistant Depression"
      ],
      "interventions": [
        {
          "name": "ALA-3000",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "escitalopram, sertraline, duloxetine or venlafaxine XR",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alar Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 37,
      "start_date": "2025-04-21",
      "completion_date": "2025-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-12-31",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 4,
      "location_summary": "Little Rock, Arkansas • St Louis, Missouri • Eatontown, New Jersey + 1 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Eatontown",
          "state": "New Jersey"
        },
        {
          "city": "North Canton",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06965569"
    },
    {
      "nct_id": "NCT07594483",
      "title": "Regulated Stimulation for Optimized Network Activity and Therapeutic Equilibrium",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "Motif XCS System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Motif Neurotech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "22 Years to 85 Years"
      },
      "enrollment_count": 20,
      "start_date": "2026-09",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-10-21",
      "last_synced_at": "2026-10-29T22:24:30.261Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Iowa City, Iowa • Houston, Texas",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07594483"
    }
  ]
}