{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=16",
    "query": {
      "intervention": "Observational only",
      "page": 16
    },
    "page_size": 10
  },
  "pagination": {
    "page": 16,
    "page_size": 10,
    "total_count": 825,
    "total_pages": 83,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=17&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=15&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-21T23:59:42.345Z",
  "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": "NCT05877833",
      "title": "Evaluating the Safety and Performance Characteristics of Ephemeral® Tattoo Ink in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tattoo; Pigmentation"
      ],
      "interventions": [
        {
          "name": "Vibrancy Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ephemeral Solutions Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 45,
      "start_date": "2020-08-10",
      "completion_date": "2023-02-01",
      "has_results": false,
      "last_update_posted_date": "2023-05-30",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Milford, Connecticut",
      "locations": [
        {
          "city": "Milford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05877833"
    },
    {
      "nct_id": "NCT04375384",
      "title": "Cetuximab After Immunotherapy for the Treatment of Head and Neck Squamous Cell Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Squamous Cell Carcinoma",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Metastatic Head-and-neck Squamous-cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cetuximab",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "Quality of life assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 38,
      "start_date": "2020-07-01",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04375384"
    },
    {
      "nct_id": "NCT03795233",
      "title": "Fecal Microbiota Transplant for Primary CDI",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Clostridium Difficile Infection"
      ],
      "interventions": [
        {
          "name": "Fecal microbiota transplant G3 capsules",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Oral Vancomycin alone",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Boston Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2019-08-23",
      "completion_date": "2021-01-15",
      "has_results": true,
      "last_update_posted_date": "2021-12-15",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03795233"
    },
    {
      "nct_id": "NCT07433634",
      "title": "Time to BBVNA Relief",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Low Back Pain",
        "Vertebrogenic Pain Syndrome",
        "Basivertebral Nerve Ablation"
      ],
      "interventions": [
        {
          "name": "Basivertebral nerve ablation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2024-04-19",
      "completion_date": "2026-10",
      "has_results": false,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 3,
      "location_summary": "Guilford, Connecticut • New Haven, Connecticut • Old Saybrook, Connecticut",
      "locations": [
        {
          "city": "Guilford",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Old Saybrook",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07433634"
    },
    {
      "nct_id": "NCT03191357",
      "title": "Evaluation of Military Service and Family Members for Post Concussive and Posttraumatic Stress Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "TBI (Traumatic Brain Injury)"
      ],
      "interventions": [
        {
          "name": "n/a observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Uniformed Services University of the Health Sciences",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 424,
      "start_date": "2014-03",
      "completion_date": "2019-07",
      "has_results": false,
      "last_update_posted_date": "2020-11-17",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03191357"
    },
    {
      "nct_id": "NCT06721611",
      "title": "A Comprehensive Optical Blood Pressure Assessment Tool to Identify Cases of Unscreened Hypertension Across an Active Population in the U.S.",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Optical Blood Pressure Monitoring Device (Aktiia G1)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Nucor",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "25 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2025-01-16",
      "completion_date": "2025-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-02-06",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Charlotte, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06721611"
    },
    {
      "nct_id": "NCT05671887",
      "title": "DREAM: Double Lung Transplant REgistry Aimed for Lung-limited Malignancies",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer",
        "Bilateral Cancer",
        "Lung Transplant"
      ],
      "interventions": [
        {
          "name": "Double Lung Transplantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 125,
      "start_date": "2022-11-16",
      "completion_date": "2032-11",
      "has_results": false,
      "last_update_posted_date": "2026-10-21",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05671887"
    },
    {
      "nct_id": "NCT04588363",
      "title": "COVID-19: Pediatric Research Immune Network on SARS-CoV-2 and MIS-C",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)",
        "Multisystem Inflammatory Syndrome in Children (MIS-C)",
        "Coronavirus Disease 2019 (COVID-19)"
      ],
      "interventions": [
        {
          "name": "SARS-CoV-2 and/or MIS-C Exposure",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "Up to 20 Years"
      },
      "enrollment_count": 244,
      "start_date": "2020-11-19",
      "completion_date": "2023-03-03",
      "has_results": false,
      "last_update_posted_date": "2024-02-29",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 20,
      "location_summary": "Loma Linda, California • Los Angeles, California • Palo Alto, California + 14 more",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04588363"
    },
    {
      "nct_id": "NCT03305484",
      "title": "Soft Contacts Observation of Risk and Education (SCORE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Contact Lens Complication",
        "Contact Lens Acute Red Eye",
        "Contact Lens Related Corneal Infiltrate (Disorder)",
        "Contact Lens-Induced Corneal Fluorescein Staining"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Southern California College of Optometry at Marshall B. Ketchum University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 171,
      "start_date": "2017-12-30",
      "completion_date": "2019-04-16",
      "has_results": false,
      "last_update_posted_date": "2019-09-18",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 4,
      "location_summary": "Fullerton, California • Fort Lauderdale, Florida • Columbus, Ohio + 1 more",
      "locations": [
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03305484"
    },
    {
      "nct_id": "NCT01625221",
      "title": "Feasibility Study of the Magnetic Anal Sphincter (FENIX System)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fecal Incontinence"
      ],
      "interventions": [
        {
          "name": "Magnetic Anal Sphincter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Torax Medical Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "19 Years to 84 Years"
      },
      "enrollment_count": 35,
      "start_date": "2008-12",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2018-01-03",
      "last_synced_at": "2026-10-21T23:59:42.345Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Spokane, Washington",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01625221"
    }
  ]
}