{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Day+3+Fear+Extinction",
    "query": {
      "intervention": "Day 3 Fear Extinction"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T13:18:14.621Z",
  "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": "NCT05453162",
      "title": "Circadian Influence on Prolonged Exposure Therapy for PTSD",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PTSD"
      ],
      "interventions": [
        {
          "name": "Prolonged Exposure Therapy for Posttraumatic Stress Disorder",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "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": 52,
      "start_date": "2022-07-01",
      "completion_date": "2026-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-18",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05453162"
    },
    {
      "nct_id": "NCT04113798",
      "title": "Exercise and Therapeutic Learning Among Women With PTSD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PTSD"
      ],
      "interventions": [
        {
          "name": "Day 1 Assessments",
          "type": "OTHER"
        },
        {
          "name": "Day 2 Fear Learning",
          "type": "OTHER"
        },
        {
          "name": "Day 3 Fear Extinction",
          "type": "OTHER"
        },
        {
          "name": "Moderate Intensity Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Low Intensity Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Day 4 Recall of Fear Extinction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 50 Years · Female only"
      },
      "enrollment_count": 35,
      "start_date": "2019-04-08",
      "completion_date": "2020-01-21",
      "has_results": false,
      "last_update_posted_date": "2020-06-19",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04113798"
    },
    {
      "nct_id": "NCT03655262",
      "title": "Treating Phobia With Multivoxel Neuro-reinforcement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Phobia"
      ],
      "interventions": [
        {
          "name": "Unconscious Neuro-reinforcement",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "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": 23,
      "start_date": "2018-10-01",
      "completion_date": "2022-06-30",
      "has_results": true,
      "last_update_posted_date": "2024-02-02",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03655262"
    },
    {
      "nct_id": "NCT03343106",
      "title": "Combining Acceptance and Commitment Therapy With Exposure and Response Prevention to Enhance Treatment Engagement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obsessive-Compulsive Disorder"
      ],
      "interventions": [
        {
          "name": "ACT plus ERP",
          "type": "BEHAVIORAL"
        },
        {
          "name": "ERP alone",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Utah State University",
      "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": 58,
      "start_date": "2011-07-12",
      "completion_date": "2017-01-09",
      "has_results": false,
      "last_update_posted_date": "2017-11-17",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 2,
      "location_summary": "Chapel Hill, North Carolina • Logan, Utah",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Logan",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03343106"
    },
    {
      "nct_id": "NCT01944423",
      "title": "Enhancing Panic and Smoking Reduction Treatment With D-Cycloserine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Nicotine Addiction",
        "Panic Attack"
      ],
      "interventions": [
        {
          "name": "d-cycloserine",
          "type": "DRUG"
        },
        {
          "name": "Pill Placebo",
          "type": "DRUG"
        },
        {
          "name": "Nicotine replacement therapy",
          "type": "DRUG"
        },
        {
          "name": "Panic and Smoking Reduction Treatment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Texas at Austin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 53,
      "start_date": "2013-10",
      "completion_date": "2018-10",
      "has_results": true,
      "last_update_posted_date": "2021-05-19",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01944423"
    },
    {
      "nct_id": "NCT05368987",
      "title": "Neuromodulation of the Fear Extinction Circuit Using Temporally and Anatomically Specific TMS in Humans",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PTSD"
      ],
      "interventions": [
        {
          "name": "Transcranial magnetic stimulation (TMS)",
          "type": "DEVICE"
        },
        {
          "name": "Fear Conditioning and Extinction Paradigm",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "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": 250,
      "start_date": "2022-02-01",
      "completion_date": "2028-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-05",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05368987"
    },
    {
      "nct_id": "NCT04417309",
      "title": "Can Exercise Improve Therapeutic Learning Among Women With Posttraumatic Stress Disorder",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PTSD"
      ],
      "interventions": [
        {
          "name": "Experimental",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Active Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Thomas Adams",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 50 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2020-05-08",
      "completion_date": "2021-11",
      "has_results": false,
      "last_update_posted_date": "2021-06-25",
      "last_synced_at": "2026-09-13T13:18:14.621Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04417309"
    }
  ]
}