{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=23",
    "query": {
      "intervention": "Observation only",
      "page": 23
    },
    "page_size": 10
  },
  "pagination": {
    "page": 23,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=24&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=22&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T11:47:56.168Z",
  "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": "NCT01169337",
      "title": "Lenalidomide or Observation in Treating Patients With Asymptomatic High-Risk Smoldering Multiple Myeloma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Light Chain Deposition Disease",
        "Smoldering Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Clinical Observation",
          "type": "OTHER"
        },
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 226,
      "start_date": "2011-01-24",
      "completion_date": "2027-05-19",
      "has_results": true,
      "last_update_posted_date": "2026-10-01",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 601,
      "location_summary": "Anchorage, Alaska • Phoenix, Arizona • Scottsdale, Arizona + 390 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01169337"
    },
    {
      "nct_id": "NCT00297895",
      "title": "Multicenter Selective Lymphadenectomy Trial II (MSLT-II)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Melanoma"
      ],
      "interventions": [
        {
          "name": "Completion Lymphadenectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Monitoring with nodal ultrasound",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Saint John's Cancer Institute",
      "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": 1939,
      "start_date": "2004-09-30",
      "completion_date": "2019-09-30",
      "has_results": false,
      "last_update_posted_date": "2022-05-13",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 39,
      "location_summary": "San Diego, California • Santa Monica, California • Colorado Springs, Colorado + 31 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Lakeland",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00297895"
    },
    {
      "nct_id": "NCT00003857",
      "title": "Radiation Therapy With or Without Optional Tamoxifen in Treating Women With Ductal Carcinoma in Situ",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "tamoxifen citrate",
          "type": "DRUG"
        },
        {
          "name": "adjuvant therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Radiation Therapy Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "26 Years",
        "maximum_age": "120 Years",
        "sex": "FEMALE",
        "summary": "26 Years to 120 Years · Female only"
      },
      "enrollment_count": 636,
      "start_date": "1999-12",
      "completion_date": "2022-05-20",
      "has_results": false,
      "last_update_posted_date": "2022-05-25",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 305,
      "location_summary": "Mobile, Alabama • Fairbanks, Alaska • Phoenix, Arizona + 235 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Fairbanks",
          "state": "Alaska"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Burbank",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00003857"
    },
    {
      "nct_id": "NCT06021769",
      "title": "Pessary Experience Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pelvic Organ Prolapse",
        "Stress Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "Observational only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2023-06-12",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06021769"
    },
    {
      "nct_id": "NCT04167137",
      "title": "Safety and Tolerability of SYNB1891 Injection Alone or in Combination With Atezolizumab in Adult Participants",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metastatic Solid Neoplasm",
        "Lymphoma"
      ],
      "interventions": [
        {
          "name": "SYNB1891",
          "type": "DRUG"
        },
        {
          "name": "Atezolizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Synlogic",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2019-12-12",
      "completion_date": "2021-12-09",
      "has_results": true,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 6,
      "location_summary": "Aurora, Colorado • Hackensack, New Jersey • Columbus, Ohio + 3 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04167137"
    },
    {
      "nct_id": "NCT05528744",
      "title": "Delineating the Molecular Spectrum and the Clinical, Imaging and Neuronal Phenotype of Chopra-Amiel-Gordon Syndrome",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Genetic Disease",
        "Chopra-Amiel-Gordon Syndrome",
        "CAGS",
        "ANKRD17"
      ],
      "interventions": [
        {
          "name": "Observational Study",
          "type": "OTHER"
        },
        {
          "name": "Sample collection only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 125,
      "start_date": "2022-08-27",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05528744"
    },
    {
      "nct_id": "NCT04847596",
      "title": "A Multicenter Study to Assess Response to COVID-19 Vaccine in Multiple Sclerosis Participants Treated With Ofatumumab",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Ofatumumab",
          "type": "OTHER"
        },
        {
          "name": "Covid-19 vaccine",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 25,
      "start_date": "2021-05-21",
      "completion_date": "2022-02-18",
      "has_results": false,
      "last_update_posted_date": "2023-01-25",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 4,
      "location_summary": "Phoenix, Arizona • Owosso, Michigan • St Louis, Missouri + 1 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Owosso",
          "state": "Michigan"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Plainview",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04847596"
    },
    {
      "nct_id": "NCT06918223",
      "title": "Assessing Patient Satisfaction and Confidence After Use of Educational Video to Augment Surgical Consent for Thyroid Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Thyroid Informed Surgical Consent Augmenting Video (TISCAV)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard Consent",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2023-11-10",
      "completion_date": "2025-12",
      "has_results": false,
      "last_update_posted_date": "2025-04-13",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06918223"
    },
    {
      "nct_id": "NCT00283062",
      "title": "Adjuvant Leuprolide With or Without Docetaxel in High Risk Prostate Cancer After Radical Prostatectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Docetaxel (TAXOTERE®) Chemotherapy",
          "type": "DRUG"
        },
        {
          "name": "Leuprolide acetate ( ELIGARD®) Hormonal Therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 228,
      "start_date": "2005-12",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2012-01-26",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 1,
      "location_summary": "Bridgewater, New Jersey",
      "locations": [
        {
          "city": "Bridgewater",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00283062"
    },
    {
      "nct_id": "NCT07771803",
      "title": "A Pilot Study of Soursop Tea in Patients With Relapsed/Refractory Acute Myeloid Leukemia (AML) or Multiple Myeloma (MM)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "AML (Acute Myeloid Leukemia)",
        "Multiple Myeloma Refractory"
      ],
      "interventions": [
        {
          "name": "Soursop tea",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Roger Strair",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2025-06-30",
      "completion_date": "2026-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-31T11:47:56.168Z",
      "location_count": 1,
      "location_summary": "Camden, New Jersey",
      "locations": [
        {
          "city": "Camden",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07771803"
    }
  ]
}