{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=2",
    "query": {
      "intervention": "observational study",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T16:51:32.523Z",
  "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": "NCT04199533",
      "title": "Iterative Redesign of a Behavioral Skills Training Program for Use in Educational Settings",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism Spectrum Disorder",
        "Disruptive Behavior"
      ],
      "interventions": [
        {
          "name": "RUBI",
          "type": "BEHAVIORAL"
        },
        {
          "name": "RUBIES",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 40,
      "start_date": "2019-09-01",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2022-05-20",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04199533"
    },
    {
      "nct_id": "NCT04933552",
      "title": "Post-Authorization Safety Study for Assessment of Pregnancy Outcomes in Patients Treated With Mayzent",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Siponimod",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 867,
      "start_date": "2021-12-15",
      "completion_date": "2032-05-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-16",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04933552"
    },
    {
      "nct_id": "NCT00726778",
      "title": "Admixture Mapping of Ethnic and Racial Insulin Complex Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "7 Years to 12 Years"
      },
      "enrollment_count": 360,
      "start_date": "2004-05",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2011-03-16",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00726778"
    },
    {
      "nct_id": "NCT06669949",
      "title": "Natural History of Sphingosine Phosphate Lyase Insufficiency Syndrome (SPLIS)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sphingosine Phosphate Lyase Insufficiency Syndrome (SPLIS)"
      ],
      "interventions": [
        {
          "name": "no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 28,
      "start_date": "2025-04-22",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-04",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06669949"
    },
    {
      "nct_id": "NCT06133049",
      "title": "A Study to Evaluate the Safety of Ozanimod Exposure During Pregnancy in Women With Multiple Sclerosis and Their Infants",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Ozanimod",
          "type": "DRUG"
        },
        {
          "name": "Select DMTs other than ozanimod",
          "type": "DRUG"
        },
        {
          "name": "No DMTs",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 2961,
      "start_date": "2021-03-16",
      "completion_date": "2031-08-31",
      "has_results": false,
      "last_update_posted_date": "2023-11-15",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Eden Prairie, Minnesota",
      "locations": [
        {
          "city": "Eden Prairie",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06133049"
    },
    {
      "nct_id": "NCT04436055",
      "title": "Intergenerational Effects of Paternal Periconceptional Cannabis and Other Drug Use (EPIC)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cannabis Use",
        "Drug Use",
        "Development, Infant"
      ],
      "interventions": [
        {
          "name": "No Intervention will be used",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 92,
      "start_date": "2020-10-26",
      "completion_date": "2022-07-01",
      "has_results": false,
      "last_update_posted_date": "2023-03-03",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04436055"
    },
    {
      "nct_id": "NCT05513417",
      "title": "Digital Care Programs for Female Pelvic Health",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pelvic Floor Disorders",
        "Pelvic Pain",
        "Pelvic Organ Prolapse",
        "Pelvic Floor Muscle Weakness",
        "Pelvic Pain Syndrome"
      ],
      "interventions": [
        {
          "name": "Bloom Pod",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sword Health, SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 99 Years · Female only"
      },
      "enrollment_count": 50000,
      "start_date": "2022-08-29",
      "completion_date": "2032-12",
      "has_results": false,
      "last_update_posted_date": "2024-12-06",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Draper, Utah",
      "locations": [
        {
          "city": "Draper",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05513417"
    },
    {
      "nct_id": "NCT02726750",
      "title": "Observational Prospective Research Study In Monoclonal Gammopathies leadINg to Myeloma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Monoclonal Gammopathy of Undetermined Significance",
        "Smoldering Plasma Cell Myeloma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "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": 200,
      "start_date": "2015-12-14",
      "completion_date": "2028-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02726750"
    },
    {
      "nct_id": "NCT00916474",
      "title": "Virology Follow up Study in Subjects Previously Treated With Telaprevir",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "telaprevir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vertex Pharmaceuticals Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 408,
      "start_date": "2009-06",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2014-02-27",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Coronado, California • Los Angeles, California + 22 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00916474"
    },
    {
      "nct_id": "NCT01598597",
      "title": "An Observational Pilot Study Evaluating the Feasibility of Conducting Genome-Wide Association Studies Utilizing Subject Provided Information in Subjects With Locally Recurrent or MBC, MCRC, MNSCLC, RGBM or MRCC Treated With Avastin (Bevacizumab) (InVite)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Colorectal Cancer",
        "Non-Small Cell Lung Cancer",
        "Glioblastoma",
        "Renal Cell Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Genentech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 276,
      "start_date": "2012-03",
      "completion_date": "2014-11",
      "has_results": false,
      "last_update_posted_date": "2015-05-08",
      "last_synced_at": "2026-09-03T16:51:32.523Z",
      "location_count": 50,
      "location_summary": "Many Locations, Alabama • Many Locations, Alaska • Many Locations, Arizona + 47 more",
      "locations": [
        {
          "city": "Many Locations",
          "state": "Alabama"
        },
        {
          "city": "Many Locations",
          "state": "Alaska"
        },
        {
          "city": "Many Locations",
          "state": "Arizona"
        },
        {
          "city": "Many Locations",
          "state": "Arkansas"
        },
        {
          "city": "Many Locations",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01598597"
    }
  ]
}