{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=24",
    "query": {
      "intervention": "Observation Only",
      "page": 24
    },
    "page_size": 10
  },
  "pagination": {
    "page": 24,
    "page_size": 10,
    "total_count": 874,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=25&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=23&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-21T10:17:04.373Z",
  "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": "NCT00871715",
      "title": "Arm Rehabilitation Study After Stroke",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stroke",
        "Brain Infarction",
        "Brain Ischemia",
        "Cerebral Infarction",
        "Cerebrovascular Disorders"
      ],
      "interventions": [
        {
          "name": "Accelerated Skill Acquisition Program (ASAP)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dose-Equivalent Usual & Customary Care - DEUCC",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual and Customary Care - UCC",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 361,
      "start_date": "2009-06",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2019-07-09",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 8,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Atlanta, Georgia",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00871715"
    },
    {
      "nct_id": "NCT05868226",
      "title": "PRE-ISPY Phase I/II Oncology Platform Program",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "HER2-positive Breast Cancer",
        "Metastatic Cancer",
        "Metastatic Breast Cancer",
        "Metastatic",
        "HER2-positive Metastatic Breast Cancer",
        "HER2 Mutation-Related Tumors",
        "HER-2 Protein Overexpression",
        "HER2-negative Breast Cancer",
        "Triple Negative Breast Cancer",
        "HR Positive",
        "Hormone Receptor-positive Breast Cancer",
        "Estrogen Receptor Positive Tumor",
        "Progesterone Receptor-positive Breast Cancer",
        "Hormone Receptor Negative Breast Carcinoma",
        "Solid Tumor",
        "Solid Tumor, Adult",
        "Solid Carcinoma",
        "HER2 Low Breast Cancer",
        "HER2 Low Breast Carcinoma",
        "ER Positive Breast Cancer",
        "PR-positive Breast Cancer",
        "Minimal Residual Disease",
        "Colo-rectal Cancer",
        "Colon Cancer",
        "Rectal Cancer",
        "ctDNA Monitoring",
        "Colorectal Neoplasms",
        "Colonic Neoplasms",
        "Rectal Neoplasms",
        "Neoplasm, Residual",
        "Adenocarcinoma of Colon",
        "Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "ALX148",
          "type": "DRUG"
        },
        {
          "name": "Fam-Trastuzumab Deruxtecan-Nxki",
          "type": "DRUG"
        },
        {
          "name": "Zanidatamab",
          "type": "DRUG"
        },
        {
          "name": "Tucatinib",
          "type": "DRUG"
        },
        {
          "name": "TTX-MC138",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "QuantumLeap Healthcare Collaborative",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 280,
      "start_date": "2023-02-15",
      "completion_date": "2031-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-30",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Aurora, Colorado + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05868226"
    },
    {
      "nct_id": "NCT02017808",
      "title": "Studying the Effects of Copaxone on Retinal Health Using Optical Tomography Over 24 Months",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University at Buffalo",
      "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": 100,
      "start_date": "2014-02",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2014-12-03",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02017808"
    },
    {
      "nct_id": "NCT06358508",
      "title": "Sapphire 3 CTO Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Coronary Disease",
        "Myocardial Ischemia",
        "Heart Diseases",
        "Arteriosclerosis",
        "Cardiovascular Diseases",
        "Chronic Total Occlusion",
        "Chronic Total Occlusion of Coronary Artery"
      ],
      "interventions": [
        {
          "name": "Sapphire 3 Coronary Dilatation Catheter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "OrbusNeich",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 170,
      "start_date": "2024-11-06",
      "completion_date": "2025-10-21",
      "has_results": false,
      "last_update_posted_date": "2026-01-12",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 12,
      "location_summary": "Stanford, California • Torrance, California • Atlanta, Georgia + 5 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06358508"
    },
    {
      "nct_id": "NCT07223684",
      "title": "TDAP in Burn Patients (Group 2)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sepsis",
        "Burn Injury",
        "Wound Healing",
        "Critical Illness",
        "Multiple Organ Dysfunction Syndrome"
      ],
      "interventions": [
        {
          "name": "Observational Cohort (No Intervention)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Henry M. Jackson Foundation for the Advancement of Military Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 80,
      "start_date": "2026-05-15",
      "completion_date": "2027-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 3,
      "location_summary": "Tampa, Florida • Atlanta, Georgia • Houston, Texas",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07223684"
    },
    {
      "nct_id": "NCT01199016",
      "title": "Effect of Prevnar 13 on Ear Infections in Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Otitis Media"
      ],
      "interventions": [
        {
          "name": "Tympanocentesis",
          "type": "PROCEDURE"
        },
        {
          "name": "Nose/throat swab",
          "type": "PROCEDURE"
        },
        {
          "name": "Observational",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "30 Months",
        "sex": "ALL",
        "summary": "6 Months to 30 Months"
      },
      "enrollment_count": 239,
      "start_date": "2010-09",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2017-03-01",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 7,
      "location_summary": "Penfield, New York • Rochester, New York",
      "locations": [
        {
          "city": "Penfield",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01199016"
    },
    {
      "nct_id": "NCT05939414",
      "title": "An Open-label Study Comparing Lutetium (177Lu) Vipivotide Tetraxetan Versus Observation in PSMA Positive OMPC.",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Oligometastatic Prostate Cancer (OMPC)"
      ],
      "interventions": [
        {
          "name": "AAA617",
          "type": "DRUG"
        },
        {
          "name": "piflufolastat (18F)",
          "type": "DRUG"
        },
        {
          "name": "gallium (68Ga) gozetotide (25μg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "MALE",
        "summary": "18 Years to 100 Years · Male only"
      },
      "enrollment_count": 450,
      "start_date": "2024-03-12",
      "completion_date": "2031-10-03",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 39,
      "location_summary": "Fayetteville, Arkansas • Los Angeles, California • Palo Alto, California + 30 more",
      "locations": [
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05939414"
    },
    {
      "nct_id": "NCT02016235",
      "title": "Role Of Phosphorus And FGF 23 In Patients With Dent Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Dent Disease"
      ],
      "interventions": [
        {
          "name": "Phosphorus Supplement",
          "type": "DRUG"
        },
        {
          "name": "Observation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 30,
      "start_date": "2014-09",
      "completion_date": "2019-01",
      "has_results": true,
      "last_update_posted_date": "2020-03-23",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02016235"
    },
    {
      "nct_id": "NCT03848962",
      "title": "Collection and Distribution of Biospecimens for Novel Research Uses",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer",
        "Healthy",
        "Gastrointestinal Complication",
        "Autoimmune Diseases",
        "Infectious Disease",
        "Women's Health: High-Risk Pregnancy",
        "Dermatologic Disease",
        "Blood Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "iSpecimen Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "1 Month to 89 Years"
      },
      "enrollment_count": 10000,
      "start_date": "2016-06-30",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-11-09",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 2,
      "location_summary": "Huntsville, Alabama • Lexington, Massachusetts",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Lexington",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03848962"
    },
    {
      "nct_id": "NCT02298829",
      "title": "Long-term Safety, Curvature Deformity Characterization, and Immunogenicity Over Time in Subjects Previously Treated With AA4500 for Peyronies Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Peyronie's Disease"
      ],
      "interventions": [
        {
          "name": "Subjects Previously Treated with AA4500",
          "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": "90 Years",
        "sex": "MALE",
        "summary": "18 Years to 90 Years · Male only"
      },
      "enrollment_count": 184,
      "start_date": "2014-11",
      "completion_date": "2018-04-09",
      "has_results": false,
      "last_update_posted_date": "2018-06-20",
      "last_synced_at": "2026-10-21T10:17:04.373Z",
      "location_count": 30,
      "location_summary": "Anchorage, Alaska • Burbank, California • Laguna Hills, California + 27 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Burbank",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02298829"
    }
  ]
}