{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=17",
    "query": {
      "condition": "Prospective Observational Study",
      "page": 17
    },
    "page_size": 10
  },
  "pagination": {
    "page": 17,
    "page_size": 10,
    "total_count": 694,
    "total_pages": 70,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=18&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=16&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T17:06:00.448Z",
  "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": "NCT01579695",
      "title": "Long-term Observational Study in HIV Subjects Exposed to EGRIFTA®",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Tesamorelin for injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Theratechnologies",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 391,
      "start_date": "2013-02",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2018-09-11",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 31,
      "location_summary": "Bakersfield, California • Fountain Valley, California • Los Angeles, California + 22 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01579695"
    },
    {
      "nct_id": "NCT03705013",
      "title": "Observational Study of Sub-populations From Cologuard Post-Approval Study (2014-01)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Cologuard",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Exact Sciences Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 51,
      "start_date": "2018-10-30",
      "completion_date": "2019-11-16",
      "has_results": false,
      "last_update_posted_date": "2020-04-14",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 20,
      "location_summary": "Glendale, Arizona • Mesa, Arizona • Tempe, Arizona + 17 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Carlsbad",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03705013"
    },
    {
      "nct_id": "NCT02264249",
      "title": "Residual Gastric Volume in Same Day Versus Split Dose and Evening Before Bowel Preparation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Esophagogastroduodenoscopy",
        "Colonoscopy"
      ],
      "interventions": [
        {
          "name": "Esophagogastroduodenoscopy and colonoscopy split dose prep",
          "type": "OTHER"
        },
        {
          "name": "Esophagogastroduodenoscopy and colonoscopy Evening before colonoscopy prep",
          "type": "OTHER"
        },
        {
          "name": "Esophagogastroduodenoscopy and colonoscopy Same day prep colonoscopy preparation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 449,
      "start_date": "2014-09",
      "completion_date": "2016-02",
      "has_results": true,
      "last_update_posted_date": "2017-05-17",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 1,
      "location_summary": "Weston, Florida",
      "locations": [
        {
          "city": "Weston",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02264249"
    },
    {
      "nct_id": "NCT01590550",
      "title": "Observational Study of Citrate Based Dialysis in Pediatric Patients Receiving Hemodialysis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Complication of Dialysis"
      ],
      "interventions": [
        {
          "name": "Use of citrate based dialysate",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Loma Linda University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Day to 21 Years"
      },
      "enrollment_count": 18,
      "start_date": "2012-05",
      "completion_date": "2015-08",
      "has_results": true,
      "last_update_posted_date": "2020-11-10",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01590550"
    },
    {
      "nct_id": "NCT04678817",
      "title": "Same Day Oral EC and Implant Initiation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "Etonogestrel contraceptive implant with oral levonorgestrel",
          "type": "DEVICE"
        },
        {
          "name": "Levonorgestrel intrauterine device",
          "type": "DEVICE"
        },
        {
          "name": "Copper T380A intrauterine device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 306,
      "start_date": "2021-02-17",
      "completion_date": "2024-03-15",
      "has_results": true,
      "last_update_posted_date": "2025-04-15",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 2,
      "location_summary": "Salt Lake City, Utah • West Valley City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        },
        {
          "city": "West Valley City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04678817"
    },
    {
      "nct_id": "NCT04564989",
      "title": "Prospective Observational Study to Validate Circulating HPVDNA and Prognostic Genomic Biomarkers in HPV-associated OPSCC",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oropharyngeal Squamous Cell Carcinoma",
        "Carcinoma, Squamous Cell",
        "Head and Neck Squamous Cell Carcinoma",
        "Oropharynx Squamous Cell Carcinoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "UNC Lineberger Comprehensive 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": 220,
      "start_date": "2020-11-19",
      "completion_date": "2033-11",
      "has_results": false,
      "last_update_posted_date": "2026-04-28",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 3,
      "location_summary": "Rochester, Minnesota • Chapel Hill, North Carolina • North Charleston, South Carolina",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "North Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04564989"
    },
    {
      "nct_id": "NCT05966883",
      "title": "SpermQT Prospective Observational Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Male Infertility"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Inherent Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2023-01-01",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 6,
      "location_summary": "San Diego, California • Greenwood Village, Colorado • Orange, Connecticut + 3 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Greenwood Village",
          "state": "Colorado"
        },
        {
          "city": "Orange",
          "state": "Connecticut"
        },
        {
          "city": "Waltham",
          "state": "Massachusetts"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05966883"
    },
    {
      "nct_id": "NCT02380274",
      "title": "Observational Cohort Study of Patients With Castration-Resistant Prostate Cancer (CRPC)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer",
        "Castration-resistant Prostate Cancer",
        "Metastatic Prostate Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Astellas Pharma Global Development, Inc.",
      "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": 1030,
      "start_date": "2015-03-27",
      "completion_date": "2021-01-14",
      "has_results": false,
      "last_update_posted_date": "2024-11-20",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 148,
      "location_summary": "Homewood, Alabama • Anchorage, Alaska • Phoenix, Arizona + 132 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02380274"
    },
    {
      "nct_id": "NCT05608460",
      "title": "Pediatric Cervical Spine Clearance: A Multicenter Prospective Observational Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cervical Spine Fracture"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "0 Years to 17 Years"
      },
      "enrollment_count": 15700,
      "start_date": "2022-08-15",
      "completion_date": "2025-08-15",
      "has_results": false,
      "last_update_posted_date": "2022-11-08",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 9,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • San Diego, California + 6 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05608460"
    },
    {
      "nct_id": "NCT04348942",
      "title": "A COVID-19 Symptom, Exposure and Immune Response Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ObvioHealth",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 804,
      "start_date": "2020-05-29",
      "completion_date": "2021-03-21",
      "has_results": false,
      "last_update_posted_date": "2022-03-04",
      "last_synced_at": "2026-10-19T17:06:00.448Z",
      "location_count": 1,
      "location_summary": "Orlando, Florida",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04348942"
    }
  ]
}