{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=14",
    "query": {
      "intervention": "Observational only",
      "page": 14
    },
    "page_size": 10
  },
  "pagination": {
    "page": 14,
    "page_size": 10,
    "total_count": 825,
    "total_pages": 83,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=15&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=13&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-21T19:15:45.760Z",
  "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": "NCT01796535",
      "title": "The PerX360º System™ Registry",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "DDD"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Interventional Spine, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 125,
      "start_date": "2012-11",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2013-03-15",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California • Saint Augustine, Florida",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Saint Augustine",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01796535"
    },
    {
      "nct_id": "NCT07795606",
      "title": "An Observational Study to Learn How Mirena and Other Progestogen Treatments Are Used for Endometrial Protection in Women 40+ With a Uterus in the United States Receiving Estrogen Therapy, and Their Respective Health Outcomes",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Estrogen Therapy"
      ],
      "interventions": [
        {
          "name": "Estrogen therapy",
          "type": "DRUG"
        },
        {
          "name": "Mirena levonorgestrel-releasing intrauterine system",
          "type": "DEVICE"
        },
        {
          "name": "Other progestogen therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "40 Years and older · Female only"
      },
      "enrollment_count": 456000,
      "start_date": "2026-08-31",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-19",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 2,
      "location_summary": "Ann Arbor, Michigan • Eden Prairie, Minnesota",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Eden Prairie",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07795606"
    },
    {
      "nct_id": "NCT05935384",
      "title": "SIBYL: obServation of Therapy Response With lIquid BiopsY evaLuation",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-small Cell Lung Cancer",
        "Colorectal Cancer",
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Guardant360",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Guardant Health, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 470,
      "start_date": "2023-10-25",
      "completion_date": "2030-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-11",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 1,
      "location_summary": "Skokie, Illinois",
      "locations": [
        {
          "city": "Skokie",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05935384"
    },
    {
      "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": "2026-10-21T19:15:45.760Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04925557"
    },
    {
      "nct_id": "NCT04680156",
      "title": "Long-term Follow-up Durability (Efficacy) Study of EN3835 for the Treatment of AC of the Shoulder (Frozen Shoulder)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adhesive Capsulitis",
        "Frozen Shoulder"
      ],
      "interventions": [
        {
          "name": "Previously treated with EN3835 up to 1.74 mg or Placebo in EN3835-210 or the pivotal phase 3 studies",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Endo USA Inc., a Keenova Therapeutics Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2020-12-17",
      "completion_date": "2022-09-12",
      "has_results": false,
      "last_update_posted_date": "2022-12-30",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 30,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Tucson, Arizona + 25 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Huntington Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04680156"
    },
    {
      "nct_id": "NCT04638751",
      "title": "ARGONAUT: Stool and Blood Sample Bank for Cancer Patients",
      "overall_status": "SUSPENDED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-small Cell Lung Cancer",
        "Colorectal Cancer",
        "Triple Negative Breast Cancer",
        "Pancreas Cancer"
      ],
      "interventions": [
        {
          "name": "Immunotherapy",
          "type": "DRUG"
        },
        {
          "name": "Chemotherapy",
          "type": "DRUG"
        },
        {
          "name": "CRC surgical resection",
          "type": "PROCEDURE"
        },
        {
          "name": "Colonoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Persephone Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5000,
      "start_date": "2022-07-01",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-18",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 10,
      "location_summary": "Orange, California • San Diego, California • Miami, Florida + 6 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04638751"
    },
    {
      "nct_id": "NCT05223829",
      "title": "Utility of Brexanolone to Target Stress-induced Alcohol Use Among Men and Women With Posttraumatic Stress Disorder",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "PTSD",
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Brexanolone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "21 Years to 55 Years"
      },
      "enrollment_count": 25,
      "start_date": "2023-08-01",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05223829"
    },
    {
      "nct_id": "NCT02807545",
      "title": "Scoliosis-Specific Exercises for At-Risk AIS Curves",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adolescent Idiopathic Scoliosis"
      ],
      "interventions": [
        {
          "name": "Scoliosis Specific Exercises",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Texas Scottish Rite Hospital for Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 98,
      "start_date": "2016-08-02",
      "completion_date": "2023-10",
      "has_results": true,
      "last_update_posted_date": "2025-01-22",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 6,
      "location_summary": "Louisville, Kentucky • Baltimore, Maryland • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02807545"
    },
    {
      "nct_id": "NCT05848570",
      "title": "Keeping it LITE: Exploring HIV Risk in Vulnerable Youth With Limited Interaction and Digital Health Intervention",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV Infections",
        "Sexual Behavior"
      ],
      "interventions": [
        {
          "name": "Keeping it LITE",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Hektoen Institute for Medical Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "34 Years",
        "sex": "ALL",
        "summary": "13 Years to 34 Years"
      },
      "enrollment_count": 6000,
      "start_date": "2023-03-23",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2023-05-08",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05848570"
    },
    {
      "nct_id": "NCT01518322",
      "title": "Impact of FeNO Measured With the NIOX MINO® Device in Identifying Asthma Among Patients With Prolonged Respiratory Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "NIOX MINO®",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Aerocrine AB",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "7 Years to 65 Years"
      },
      "enrollment_count": 235,
      "start_date": "2011-11",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2013-08-30",
      "last_synced_at": "2026-10-21T19:15:45.760Z",
      "location_count": 13,
      "location_summary": "Byron, Minnesota • Chatfield, Minnesota • Pine Island, Minnesota + 7 more",
      "locations": [
        {
          "city": "Byron",
          "state": "Minnesota"
        },
        {
          "city": "Chatfield",
          "state": "Minnesota"
        },
        {
          "city": "Pine Island",
          "state": "Minnesota"
        },
        {
          "city": "Plainview",
          "state": "Minnesota"
        },
        {
          "city": "Preston",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01518322"
    }
  ]
}