{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=23",
    "query": {
      "intervention": "Longitudinal",
      "page": 23
    },
    "page_size": 10
  },
  "pagination": {
    "page": 23,
    "page_size": 10,
    "total_count": 1254,
    "total_pages": 126,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=24&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=22&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T05:58:56.487Z",
  "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": "NCT01206920",
      "title": "The DC Cohort Longitudinal HIV Status Neutral Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV",
        "AIDS"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "George Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 19000,
      "start_date": "2011-01",
      "completion_date": "2041-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-02",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 14,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01206920"
    },
    {
      "nct_id": "NCT07209943",
      "title": "Augmented Reality BCI Longitudinal Study for Persons With ALS, Stroke, TBI and SCI Utilizing Cognixion + Apple Vision Pro",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "ALS (Amyotrophic Lateral Sclerosis)",
        "TBI Traumatic Brain Injury",
        "SCI - Spinal Cord Injury",
        "Stroke"
      ],
      "interventions": [
        {
          "name": "Cognixion + Apple Vision Pro",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Cognixion",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2025-10-16",
      "completion_date": "2026-05-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-07",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 1,
      "location_summary": "Santa Barbara, California",
      "locations": [
        {
          "city": "Santa Barbara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07209943"
    },
    {
      "nct_id": "NCT03481738",
      "title": "Pyruvate Kinase Deficiency Global Longitudinal Registry",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pyruvate Kinase Deficiency"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Agios Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 500,
      "start_date": "2018-04-23",
      "completion_date": "2027-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-28",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 15,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Orange, California + 10 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03481738"
    },
    {
      "nct_id": "NCT01148550",
      "title": "Longitudinal Study of Mitochondrial Hepatopathies",
      "overall_status": "SUSPENDED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Liver Failure",
        "Mitochondrial Diseases",
        "End Stage Liver Disease",
        "Respiratory Chain Deficiencies, Mitochondrial",
        "Disorder of Fatty Acid Oxidation"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Arbor Research Collaborative for Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 90,
      "start_date": "2010-08-18",
      "completion_date": "2029-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 15,
      "location_summary": "Los Angeles, California • San Francisco, California • Aurora, Colorado + 12 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01148550"
    },
    {
      "nct_id": "NCT03531996",
      "title": "The Longitudinal Evaluation of Autoimmune Pulmonary Alveolar Proteinosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autoimmune Pulmonary Alveolar Proteinosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 29,
      "start_date": "2018-04-19",
      "completion_date": "2020-09-16",
      "has_results": false,
      "last_update_posted_date": "2021-06-24",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03531996"
    },
    {
      "nct_id": "NCT00832286",
      "title": "Longitudinal Study of the Human Intestinal Microbiome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Dysbacteriosis"
      ],
      "interventions": [
        {
          "name": "Ciprofloxacin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 60,
      "start_date": "2009-07-23",
      "completion_date": "2011-01-11",
      "has_results": false,
      "last_update_posted_date": "2021-07-29",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00832286"
    },
    {
      "nct_id": "NCT01022073",
      "title": "Follow Up Study for Treatment of Parkinson's Disease With Deep Brain Stimulation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "21 Years to 95 Years"
      },
      "enrollment_count": 156,
      "start_date": "2010-06",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2016-06-10",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 12,
      "location_summary": "Los Angeles, California • San Francisco, California • West Los Angeles, California + 4 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "West Los Angeles",
          "state": "California"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01022073"
    },
    {
      "nct_id": "NCT04988451",
      "title": "Family ASL: Longitudinal Study of Deaf Children and Hearing Parents Who Receive Services to Support the Learning of ASL",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Deafness",
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "ASL Services",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Connecticut",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2021-07-20",
      "completion_date": "2025-11-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-11",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 1,
      "location_summary": "Storrs, Connecticut",
      "locations": [
        {
          "city": "Storrs",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04988451"
    },
    {
      "nct_id": "NCT03879629",
      "title": "Treating Breast Cancer Patients Undergoing Trastuzumab Treatment With Carvedilol to Reduce Incidence of Heart Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Carvedilol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 224,
      "start_date": "2019-08-21",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 5,
      "location_summary": "Phoenix, Arizona • Jacksonville, Florida • Rochester, Minnesota + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03879629"
    },
    {
      "nct_id": "NCT07647042",
      "title": "A Real-World Study of Early Breast Cancer Patients Eligible for Treatment With CDK4/6 Inhibitors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 750,
      "start_date": "2026-03-31",
      "completion_date": "2026-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-10-31T05:58:56.487Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07647042"
    }
  ]
}