{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=HFpEF+-+Heart+Failure+with+Preserved+Ejection+Fraction&page=5",
    "query": {
      "condition": "HFpEF - Heart Failure with Preserved Ejection Fraction",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 231,
    "total_pages": 24,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=HFpEF+-+Heart+Failure+with+Preserved+Ejection+Fraction&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=HFpEF+-+Heart+Failure+with+Preserved+Ejection+Fraction&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-12T04:20:42.587Z",
  "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": "NCT04600115",
      "title": "New MRI Methods Applied to Heart Failure With Preserved Ejection Fraction (HFpEF)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "MRI Scans"
      ],
      "interventions": [
        {
          "name": "Adenosine",
          "type": "DRUG"
        },
        {
          "name": "Regadenoson",
          "type": "DRUG"
        },
        {
          "name": "O-15 labeled radioactive water",
          "type": "DRUG"
        },
        {
          "name": "MRI",
          "type": "DEVICE"
        },
        {
          "name": "PET Imaging",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2017-03-03",
      "completion_date": "2027-03-03",
      "has_results": false,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04600115"
    },
    {
      "nct_id": "NCT07215715",
      "title": "US Benchmarking Clinical Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HFpEF - Heart Failure With Preserved Ejection Fraction",
        "HFmrEF",
        "ATTR-CM (Transthyretin Amyloid Cardiomyopathy)",
        "Left Ventricular Hypertrophy",
        "Cardiac Amyloidosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "eMyosound SAS",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2025-09-16",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2025-10-20",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "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/NCT07215715"
    },
    {
      "nct_id": "NCT02918552",
      "title": "Oral Nitrite for Older Heart Failure With Preserved Ejection Fraction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "sodium nitrite",
          "type": "DRUG"
        },
        {
          "name": "Control",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gladwin, Mark, MD",
      "sponsor_class": "INDIV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "70 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2017-04-03",
      "completion_date": "2018-12-31",
      "has_results": true,
      "last_update_posted_date": "2020-01-22",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02918552"
    },
    {
      "nct_id": "NCT03195660",
      "title": "Adherence to ASV Therapy in Heart Failure With Preserved Ejection Fraction Feasibility Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure With Normal Ejection Fraction",
        "Sleep Apnea"
      ],
      "interventions": [
        {
          "name": "ASV Therapy",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "ResMed",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2017-06-26",
      "completion_date": "2017-11-15",
      "has_results": true,
      "last_update_posted_date": "2021-05-14",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 3,
      "location_summary": "San Diego, California • Philadelphia, Pennsylvania • Falls Church, Virginia",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Falls Church",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03195660"
    },
    {
      "nct_id": "NCT03714815",
      "title": "A Long Term Study to Find Out if Macitentan is an Effective and Safe Treatment for Patients With Heart Failure With Preserved Ejection Fraction and Pulmonary Vascular Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction and Pulmonary Vascular Disease"
      ],
      "interventions": [
        {
          "name": "macitentan 10 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Actelion",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 91,
      "start_date": "2018-12-07",
      "completion_date": "2021-10-12",
      "has_results": true,
      "last_update_posted_date": "2025-02-04",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 11,
      "location_summary": "Littleton, Colorado • Chicago, Illinois • Iowa City, Iowa + 8 more",
      "locations": [
        {
          "city": "Littleton",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03714815"
    },
    {
      "nct_id": "NCT03960073",
      "title": "Chronic Kidney Disease and Heart Failure With Preserved Ejection Fraction: The Role of Mitochondrial Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic",
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "MitoQ",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2019-07-31",
      "completion_date": "2022-09-30",
      "has_results": false,
      "last_update_posted_date": "2022-12-19",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03960073"
    },
    {
      "nct_id": "NCT04424914",
      "title": "Global Prevalence of ATTR-CM in Participants With HFpEF",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Transthyretin Amyloid Cardiomyopathy",
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "Scintigraphy",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 347,
      "start_date": "2020-12-30",
      "completion_date": "2023-06-02",
      "has_results": true,
      "last_update_posted_date": "2024-07-19",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 22,
      "location_summary": "Fairhope, Alabama • Huntsville, Alabama • Miami, Florida + 11 more",
      "locations": [
        {
          "city": "Fairhope",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04424914"
    },
    {
      "nct_id": "NCT07288398",
      "title": "LEVEL-2: LEVosimendan to Improve Exercise Limitation in Patients With PH-HFpEF-2",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pulmonary Hypertension Associated With HFpEF"
      ],
      "interventions": [
        {
          "name": "TNX-103",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tenax Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 540,
      "start_date": "2026-03-03",
      "completion_date": "2029-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-19",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 46,
      "location_summary": "Alexander City, Alabama • Tucson, Arizona • Sacramento, California + 40 more",
      "locations": [
        {
          "city": "Alexander City",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07288398"
    },
    {
      "nct_id": "NCT01542502",
      "title": "Pilot Feasibility Study of the Safety and Efficacy of Anakinra in Heart Failure With Preserved Ejection Fraction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Anakinra",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2012-02",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2017-02-06",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01542502"
    },
    {
      "nct_id": "NCT05585125",
      "title": "A Preliminary Study for INFORMED",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure",
        "Heart Failure, Diastolic",
        "Heart Failure With Preserved Ejection Fraction",
        "Cardiac Failure",
        "Heart Diseases"
      ],
      "interventions": [
        {
          "name": "Beta blocker",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2024-02-07",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-10-12T04:20:42.587Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05585125"
    }
  ]
}