{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Population+Groups&page=2",
    "query": {
      "condition": "Population Groups",
      "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?condition=Population+Groups&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T09:18:01.877Z",
  "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": "NCT05086094",
      "title": "Expanded Access Protocol of Verdiperstat in Patients With Multiple System Atrophy (MSA)",
      "overall_status": "NO_LONGER_AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Multiple System Atrophy (MSA)"
      ],
      "interventions": [
        {
          "name": "BHV3241, verdiperstat",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biohaven Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2022-10-06",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Morrisville, North Carolina",
      "locations": [
        {
          "city": "Morrisville",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05086094"
    },
    {
      "nct_id": "NCT01566994",
      "title": "Comparing Population Cessation Services",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "TTM Tailored",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motivational Enhancement Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Integrated Treatment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Rhode Island",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2500,
      "start_date": "2010-03",
      "completion_date": "2013-05",
      "has_results": false,
      "last_update_posted_date": "2013-09-17",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Kingston, Rhode Island",
      "locations": [
        {
          "city": "Kingston",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01566994"
    },
    {
      "nct_id": "NCT00336570",
      "title": "Predictive Medicine Research. (PRE MED)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "30 Years to 90 Years"
      },
      "enrollment_count": 288,
      "start_date": "2006-02",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2013-11-18",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00336570"
    },
    {
      "nct_id": "NCT04311983",
      "title": "Interventions to Help More Low-income Smokers Quit",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Cessation",
        "Smoking Behaviors",
        "Health Disparity"
      ],
      "interventions": [
        {
          "name": "Tobacco Quitline",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Smoke Free Home",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 1973,
      "start_date": "2020-03-31",
      "completion_date": "2023-09-29",
      "has_results": true,
      "last_update_posted_date": "2024-10-10",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04311983"
    },
    {
      "nct_id": "NCT04606966",
      "title": "Physiological Mechanisms of Therapeutic Horseback Riding Intervention Effects in a Psychiatric Population of ASD Youth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Autism Spectrum Disorder",
        "Mental Disorders"
      ],
      "interventions": [
        {
          "name": "Therapeutic Horseback Riding",
          "type": "OTHER"
        },
        {
          "name": "Barn Activity",
          "type": "OTHER"
        },
        {
          "name": "Hybrid",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 250,
      "start_date": "2020-12-22",
      "completion_date": "2025-02-22",
      "has_results": false,
      "last_update_posted_date": "2025-10-24",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 2,
      "location_summary": "Aurora, Colorado • Portland, Maine",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Portland",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04606966"
    },
    {
      "nct_id": "NCT00004850",
      "title": "Epidemiology, Infectivity and Natural History of Hepatitis C Virus Infection",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis C",
        "Hepatitis B"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institutes of Health Clinical Center (CC)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 805,
      "start_date": "1991-03-15",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004850"
    },
    {
      "nct_id": "NCT06907888",
      "title": "Rhythm Express Wearable System vs. Simultaneous Polysomnography for the Diagnosis of Obstructive Sleep Apnea in Adults With Suspected or Observed Atrial Fibrillation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obstructive Sleep Apnea (OSA)",
        "Atrial Fibrillation (Paroxysmal)",
        "Palpitations"
      ],
      "interventions": [
        {
          "name": "Rhythm Express Wearable System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "VivaQuant",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "21 Years to 85 Years"
      },
      "enrollment_count": 30,
      "start_date": "2024-11-18",
      "completion_date": "2025-06-25",
      "has_results": false,
      "last_update_posted_date": "2025-07-23",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 4,
      "location_summary": "Conway, Arkansas • St Louis, Missouri • Charlotte, North Carolina + 1 more",
      "locations": [
        {
          "city": "Conway",
          "state": "Arkansas"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Marshfield",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06907888"
    },
    {
      "nct_id": "NCT07641413",
      "title": "Lung and Heart Function Across Decades of Life in Health",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pollution Related Respiratory Disorder",
        "Pollution; Exposure",
        "Dyspnea",
        "Cardiopulmonary"
      ],
      "interventions": [
        {
          "name": "Healthy control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "24 Years",
        "maximum_age": "68 Years",
        "sex": "ALL",
        "summary": "24 Years to 68 Years"
      },
      "enrollment_count": 200,
      "start_date": "2024-08-01",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07641413"
    },
    {
      "nct_id": "NCT06998069",
      "title": "Head and Neck Cancer Study Project in the Geriatric Population",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Head and Neck Neoplasms"
      ],
      "interventions": [
        {
          "name": "Arm I Carboplatin, Paclitaxel, Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "Arm II Carboplatin, Paclitaxel, Cetuximab",
          "type": "DRUG"
        },
        {
          "name": "Arm III Pembrolizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2025-08-27",
      "completion_date": "2027-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-12-30",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06998069"
    },
    {
      "nct_id": "NCT07164482",
      "title": "Intermediate Size Patient Population Expanded Access Protocol to Evaluate HB-adMSCs for the Treatment of Patients With Traumatic or Nontraumatic Brain Injury",
      "overall_status": "AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Brain Injury"
      ],
      "interventions": [
        {
          "name": "HB- adMSCs (Hope Biosciences adipose derived mesenchymal stem cells)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Hope Biosciences Research Foundation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "78 Years",
        "sex": "ALL",
        "summary": "14 Years to 78 Years"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2026-05-19",
      "last_synced_at": "2026-07-23T09:18:01.877Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07164482"
    }
  ]
}