{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=43",
    "query": {
      "condition": "Longitudinal Studies",
      "page": 43
    },
    "page_size": 10
  },
  "pagination": {
    "page": 43,
    "page_size": 10,
    "total_count": 8689,
    "total_pages": 869,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=44&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=42&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-07T09:04:35.215Z",
  "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": "NCT01849588",
      "title": "HCV-RNA Kinetics During Sorafenib for Hepatocellular Carcinoma (HCC)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hepatocellular Cancer"
      ],
      "interventions": [
        {
          "name": "Sorafenib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2013-05",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2017-04-19",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01849588"
    },
    {
      "nct_id": "NCT01288560",
      "title": "IMAGE-HF Project I-A: Cardiac Imaging in Ischemic Heart Failure (AIMI-HF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Coronary Artery Disease",
        "Ischemic Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Advanced cardiac imaging",
          "type": "OTHER"
        },
        {
          "name": "Standard Cardiac Imaging",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ottawa Heart Institute Research Corporation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1390,
      "start_date": "2011-01",
      "completion_date": "2022-10-04",
      "has_results": false,
      "last_update_posted_date": "2023-11-29",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01288560"
    },
    {
      "nct_id": "NCT07803588",
      "title": "A Study to Test the AdaptDx Pro Agreement in Rod Intercept Time With the AdaptDx in Healthy Subjects With Normal Vision (FlashBack)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Adult Participants"
      ],
      "interventions": [
        {
          "name": "AdaptDx Tabletop vs AdaptDx Pro",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "AdaptDx, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "22 Years to 49 Years"
      },
      "enrollment_count": 24,
      "start_date": "2026-09-15",
      "completion_date": "2027-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-03",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07803588"
    },
    {
      "nct_id": "NCT02329327",
      "title": "A Study in Participants With Acute Major Bleeding to Evaluate the Ability of Andexanet Alfa to Reverse the Anticoagulation Effect of Direct and Indirect Oral Anticoagulants (Extension Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Bleeding"
      ],
      "interventions": [
        {
          "name": "Andexanet",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Alexion Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 479,
      "start_date": "2015-04-10",
      "completion_date": "2020-09-24",
      "has_results": true,
      "last_update_posted_date": "2022-02-16",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 23,
      "location_summary": "Long Beach, California • Los Angeles, California • Orange, California + 20 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02329327"
    },
    {
      "nct_id": "NCT06558786",
      "title": "Registry for Esophageal and Gastroesophageal Junction Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gastroesophageal-junction Cancer",
        "Esophageal Cancer"
      ],
      "interventions": [
        {
          "name": "EORTC QLQ-C30 questionnaire",
          "type": "OTHER"
        },
        {
          "name": "QLQ-OGS25 questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering 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": 50,
      "start_date": "2024-08-12",
      "completion_date": "2029-08-12",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06558786"
    },
    {
      "nct_id": "NCT05050669",
      "title": "Natural History Study of ENPP1 Deficiency and the Early-onset Form of ABCC6 Deficiency",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ectonucleotide Pyrophosphatase/phosphodiesterase1 Deficiency",
        "Generalized Arterial Calcification of Infancy",
        "Autosomal Recessive Hypophosphatemic Rickets",
        "Adenosine Triphosphate Binding Cassette Transporter Protein Subfamily C Member 6"
      ],
      "interventions": [
        {
          "name": "No Intervention for this observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Inozyme Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "2 Years to 18 Years"
      },
      "enrollment_count": 12,
      "start_date": "2022-06-28",
      "completion_date": "2024-06-26",
      "has_results": false,
      "last_update_posted_date": "2026-07-06",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • Philadelphia, Pennsylvania • Fort Worth, Texas",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05050669"
    },
    {
      "nct_id": "NCT05133141",
      "title": "A Study of the ECHELON Contour Curved Cutter Stapler Device in Colorectal Procedures",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Surgical Procedures"
      ],
      "interventions": [
        {
          "name": "Echelon Contour",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ethicon Endo-Surgery",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 9,
      "start_date": "2021-12-21",
      "completion_date": "2022-12-15",
      "has_results": false,
      "last_update_posted_date": "2023-04-11",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 2,
      "location_summary": "St Louis, Missouri • Dallas, Texas",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05133141"
    },
    {
      "nct_id": "NCT04689854",
      "title": "Cervical Interbody Implant Study",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Degenerative Disc Disease",
        "Cervical Spinal Instability"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "NuVasive",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2020-07-07",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-12-22",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 7,
      "location_summary": "Orange, California • Hartford, Connecticut • Somerville, Massachusetts + 4 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Hartford",
          "state": "Connecticut"
        },
        {
          "city": "Somerville",
          "state": "Massachusetts"
        },
        {
          "city": "Columbia",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04689854"
    },
    {
      "nct_id": "NCT03440359",
      "title": "Vaginal Progesterone Supplementation in Women With PCOS Undergoing Ovulation Induction With Letrozole",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Polycystic Ovary Syndrome"
      ],
      "interventions": [
        {
          "name": "Progesterone Vaginal Gel 8%",
          "type": "DRUG"
        },
        {
          "name": "Letrozole Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "pelvic ultrasound",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ovidrel 250 MCG Per 0.5 ML Prefilled Syringe",
          "type": "DRUG"
        },
        {
          "name": "Intrauterine insemination or timed intercourse",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Eastern Virginia Medical School",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 40 Years · Female only"
      },
      "enrollment_count": 52,
      "start_date": "2012-07-06",
      "completion_date": "2017-12-30",
      "has_results": false,
      "last_update_posted_date": "2018-02-26",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03440359"
    },
    {
      "nct_id": "NCT05773196",
      "title": "Prospective Single-Timepoint Huntington's Disease Biospecimen Collection Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Huntington Disease",
        "Huntington's Dementia",
        "Huntington Disease, Late Onset",
        "Huntington; Dementia (Etiology)"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Sanguine Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 5,
      "start_date": "2023-03-14",
      "completion_date": "2025-02-28",
      "has_results": false,
      "last_update_posted_date": "2024-04-18",
      "last_synced_at": "2026-11-07T09:04:35.215Z",
      "location_count": 1,
      "location_summary": "Woburn, Massachusetts",
      "locations": [
        {
          "city": "Woburn",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05773196"
    }
  ]
}