{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=27",
    "query": {
      "intervention": "Observational Control",
      "page": 27
    },
    "page_size": 10
  },
  "pagination": {
    "page": 27,
    "page_size": 10,
    "total_count": 644,
    "total_pages": 65,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=28&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=26&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-25T14:22:11.917Z",
  "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": "NCT04599855",
      "title": "A Study of Esketamine Nasal Spray, Administered as Monotherapy, in Adult Participants With Treatment-resistant Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "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": 477,
      "start_date": "2020-11-04",
      "completion_date": "2024-01-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-25",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 54,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Little Rock, Arkansas + 44 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04599855"
    },
    {
      "nct_id": "NCT04990726",
      "title": "Immune Related Toxicity and Symptom Burden in Chronic Cancer Survivors With Melanoma Receiving Adjuvant Immunotherapy With Immune Checkpoint Inhibitors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Clinical Stage III Cutaneous Melanoma AJCC v8",
        "Pathologic Stage III Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIA Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIB Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIC Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIID Cutaneous Melanoma AJCC v8",
        "Melanoma, Stage II",
        "Melanoma Stage IV"
      ],
      "interventions": [
        {
          "name": "Assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 126,
      "start_date": "2019-12-05",
      "completion_date": "2027-02-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-18",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04990726"
    },
    {
      "nct_id": "NCT01579695",
      "title": "Long-term Observational Study in HIV Subjects Exposed to EGRIFTA®",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Tesamorelin for injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Theratechnologies",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 391,
      "start_date": "2013-02",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2018-09-11",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 31,
      "location_summary": "Bakersfield, California • Fountain Valley, California • Los Angeles, California + 22 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01579695"
    },
    {
      "nct_id": "NCT04925557",
      "title": "Study to Assess the Efficacy of Mayzent on Microglia in Secondary Progressive Multiple Sclerosis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Secondary-progressive Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Mayzent",
          "type": "DRUG"
        },
        {
          "name": "Ocrevus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 8,
      "start_date": "2021-11-13",
      "completion_date": "2023-08-05",
      "has_results": true,
      "last_update_posted_date": "2025-05-13",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04925557"
    },
    {
      "nct_id": "NCT03253952",
      "title": "A Study of Autonomic Dynamic Dysfunction to Predict Infections After Spinal Cord Injury.",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Trauma, Spinal Cord",
        "SPINAL Fracture"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2017-09-29",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03253952"
    },
    {
      "nct_id": "NCT00319826",
      "title": "Virulence Determinants in S Aureus Bacteremia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bacteremia"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1354,
      "start_date": "2004-03",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2016-04-28",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00319826"
    },
    {
      "nct_id": "NCT07458568",
      "title": "ViBandz Feasibility Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatrics",
        "Neurologic Dysfunction",
        "Vibration Therapy"
      ],
      "interventions": [
        {
          "name": "ViBandz",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Children's Mercy Hospital Kansas City",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 30,
      "start_date": "2026-04-07",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-27",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07458568"
    },
    {
      "nct_id": "NCT02999685",
      "title": "Home-based Health Management of Chronic Obstructive Lung Disease (COPD) Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease",
        "Emphysema",
        "Pulmonary Rehabilitation"
      ],
      "interventions": [
        {
          "name": "Home-base Pulmonary Rehab with Health Coaching",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "40 Years to 99 Years"
      },
      "enrollment_count": 154,
      "start_date": "2016-09",
      "completion_date": "2019-06",
      "has_results": false,
      "last_update_posted_date": "2020-01-06",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02999685"
    },
    {
      "nct_id": "NCT05031468",
      "title": "Multisite Observational Maternal and Infant Study for COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Licensed or EUA SARS-CoV-2 vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 562,
      "start_date": "2021-07-06",
      "completion_date": "2023-08-16",
      "has_results": false,
      "last_update_posted_date": "2024-06-27",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 10,
      "location_summary": "Atlanta, Georgia • Chicago, Illinois • New York, New York + 6 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05031468"
    },
    {
      "nct_id": "NCT06043401",
      "title": "Tracking Brain Biomarkers and Renormalization Associated With Antidepressant Transcranial Magnetic Stimulation Therapy",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "Neuroimaging with Magnetic Resonance Imaging (MRI)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Medical University of South Carolina",
      "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": 40,
      "start_date": "2023-04-04",
      "completion_date": "2027-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-20",
      "last_synced_at": "2026-10-25T14:22:11.917Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06043401"
    }
  ]
}