{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Cognitive+and+Brain+Function+Questionnaires",
    "query": {
      "intervention": "Cognitive and Brain Function Questionnaires"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 39,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Cognitive+and+Brain+Function+Questionnaires&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T12:02:24.859Z",
  "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": "NCT03794856",
      "title": "The Dallas Asthma Brain and Cognition (ABC) Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Functional and Structural Magnetic Resonance Imaging (research grade)",
          "type": "OTHER"
        },
        {
          "name": "Cognitive Function Testing (non-diagnostic)",
          "type": "OTHER"
        },
        {
          "name": "Asthma and Psychological Questionnaires (non-diagnostic)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "69 Years",
        "sex": "ALL",
        "summary": "40 Years to 69 Years"
      },
      "enrollment_count": 130,
      "start_date": "2019-02-21",
      "completion_date": "2025-05-28",
      "has_results": false,
      "last_update_posted_date": "2025-07-09",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 2,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03794856"
    },
    {
      "nct_id": "NCT02914067",
      "title": "Cognitive Biomarkers in Pediatric Brain Tumor Patients",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Childhood Brain Tumor"
      ],
      "interventions": [
        {
          "name": "Neurocognitive testing",
          "type": "OTHER"
        },
        {
          "name": "rsfcMRI",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "4 Years to 18 Years"
      },
      "enrollment_count": 200,
      "start_date": "2016-10-26",
      "completion_date": "2029-01-31",
      "has_results": false,
      "last_update_posted_date": "2025-11-21",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02914067"
    },
    {
      "nct_id": "NCT06080932",
      "title": "Ketogenic Intervention in Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Depression",
        "Ketosis"
      ],
      "interventions": [
        {
          "name": "Ketogenic Diet",
          "type": "OTHER"
        },
        {
          "name": "NIH Toolbox",
          "type": "OTHER"
        },
        {
          "name": "gradCPT",
          "type": "OTHER"
        },
        {
          "name": "Resting-state fMRI",
          "type": "OTHER"
        },
        {
          "name": "Task-fMRI",
          "type": "OTHER"
        },
        {
          "name": "CGM/CKM",
          "type": "OTHER"
        },
        {
          "name": "Blood Draw",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sleep Monitoring",
          "type": "OTHER"
        },
        {
          "name": "Ketone/Glucose Monitoring",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Body Composition",
          "type": "OTHER"
        },
        {
          "name": "PHQ-9",
          "type": "BEHAVIORAL"
        },
        {
          "name": "WHO-5",
          "type": "BEHAVIORAL"
        },
        {
          "name": "SKID",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BIOLOGICAL",
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 30,
      "start_date": "2023-02-20",
      "completion_date": "2024-12-21",
      "has_results": false,
      "last_update_posted_date": "2025-05-29",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06080932"
    },
    {
      "nct_id": "NCT02488863",
      "title": "NEPAL (Neuromodulatory Examination of Pain and Mobility Across the Lifespan)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Musculoskeletal Pain",
        "Pain, Chronic"
      ],
      "interventions": [
        {
          "name": "MRI Neuroimaging",
          "type": "OTHER"
        },
        {
          "name": "Quantitative Sensory Testing",
          "type": "OTHER"
        },
        {
          "name": "Questionnaires",
          "type": "OTHER"
        },
        {
          "name": "Physical and Cognitive Function Testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 105,
      "start_date": "2015-07",
      "completion_date": "2024-02-04",
      "has_results": true,
      "last_update_posted_date": "2025-03-18",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 4,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02488863"
    },
    {
      "nct_id": "NCT05204940",
      "title": "Longitudinal Observational Biomarker Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depression",
        "Dementia",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Mechanisms of Late life depression (LLD)-dementia through functional Magnetic Resonance Imaging (fMRI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neuropsychological Data",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Clinical Scales",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Centre for Addiction and Mental Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 506,
      "start_date": "2017-09-27",
      "completion_date": "2024-07-31",
      "has_results": false,
      "last_update_posted_date": "2024-11-25",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 4,
      "location_summary": "Los Angeles, California • St Louis, Missouri • New York, New York + 1 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05204940"
    },
    {
      "nct_id": "NCT00693914",
      "title": "Working Memory Performance Among Childhood Brain Tumor Survivors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Brain Tumors"
      ],
      "interventions": [
        {
          "name": "Series of tests/questionnaires",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "8 Years to 18 Years"
      },
      "enrollment_count": 130,
      "start_date": "2007-04",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2017-04-25",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00693914"
    },
    {
      "nct_id": "NCT04319237",
      "title": "Axicabtagene Ciloleucel:Neurocognitive and Patient-Reported Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diffuse Large B Cell Lymphoma",
        "Transformed Lymphoma"
      ],
      "interventions": [
        {
          "name": "Handgrip strength test",
          "type": "OTHER"
        },
        {
          "name": "Neuropsychological Assessment - Wechsler Test of Adult Reading (WTAR)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neuropsychological Assessment - Repeatable Battery for the Assessment of Status (RBANS)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neuropsychological Assessment - Color Trails",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neuropsychological Assessment -Stroop Color and Word Test",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient Reported Outcomes Measurement Information System-29 (PROMIS-29) Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quality of Life (EQ-5D-5L) Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "PROMIS Cognitive Function 4a Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Comprehensive Score for Financial Toxicity (COST) measure",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2020-03-10",
      "completion_date": "2023-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04319237"
    },
    {
      "nct_id": "NCT03471182",
      "title": "Investigation of Cocaine Addiction Using mGluR5 PET and fMRI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cocaine Dependence"
      ],
      "interventions": [
        {
          "name": "Psychiatric and Cognitive Testing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cocaine Self-adminstration",
          "type": "DRUG"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "RADIATION"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 32,
      "start_date": "2018-02-26",
      "completion_date": "2022-08-18",
      "has_results": true,
      "last_update_posted_date": "2024-02-29",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03471182"
    },
    {
      "nct_id": "NCT03180502",
      "title": "Proton Beam or Intensity-Modulated Radiation Therapy in Preserving Brain Function in Patients With IDH Mutant Grade II or III Glioma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Anaplastic Astrocytoma",
        "Anaplastic Oligoastrocytoma",
        "Anaplastic Oligodendroglioma",
        "Diffuse Astrocytoma",
        "Glioma",
        "Oligoastrocytoma",
        "Oligodendroglioma",
        "WHO Grade 3 Glioma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Proton Beam Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Temozolomide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "NRG Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2018-01-23",
      "completion_date": "2031-07-13",
      "has_results": false,
      "last_update_posted_date": "2026-07-28",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 34,
      "location_summary": "Birmingham, Alabama • Boca Raton, Florida • Miami, Florida + 27 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Boca Raton",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03180502"
    },
    {
      "nct_id": "NCT03660774",
      "title": "A Study of the Impact of Hemophilia and Its Treatment on Brain Development, Thinking and Behaviour in Children With Hemophilia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Haemophilia A",
        "Haemophilia B"
      ],
      "interventions": [
        {
          "name": "No treatment given",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novo Nordisk A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "MALE",
        "summary": "1 Year to 21 Years · Male only"
      },
      "enrollment_count": 563,
      "start_date": "2018-09-27",
      "completion_date": "2019-10-11",
      "has_results": false,
      "last_update_posted_date": "2019-11-22",
      "last_synced_at": "2026-09-03T12:02:24.859Z",
      "location_count": 22,
      "location_summary": "Los Angeles, California • Orange, California • San Diego, California + 19 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03660774"
    }
  ]
}