{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Left+Ventricular+Outflow+Tract+Obstruction",
    "query": {
      "condition": "Left Ventricular Outflow Tract Obstruction"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T18:15:48.793Z",
  "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": "NCT01275339",
      "title": "Aortic Stenosis and PhosphodiEsterase Type 5 iNhibition (ASPEN): A Pilot Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Aortic Stenosis",
        "LV Remodeling, Hypertrophy"
      ],
      "interventions": [
        {
          "name": "Tadalafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2012-12",
      "completion_date": "2017-04-14",
      "has_results": true,
      "last_update_posted_date": "2019-04-17",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01275339"
    },
    {
      "nct_id": "NCT02842242",
      "title": "A Phase 2 Open-label Pilot Study Evaluating MYK-461 in Subjects With Symptomatic Hypertrophic Cardiomyopathy and Left Ventricular Outflow Tract Obstruction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cardiomyopathy, Hypertrophic Obstructive",
        "Left Ventricular Outflow Tract Obstruction"
      ],
      "interventions": [
        {
          "name": "MYK-461",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "MyoKardia, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 21,
      "start_date": "2016-08",
      "completion_date": "2017-11",
      "has_results": true,
      "last_update_posted_date": "2021-06-08",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 7,
      "location_summary": "Scottsdale, Arizona • New Haven, Connecticut • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02842242"
    },
    {
      "nct_id": "NCT01272388",
      "title": "Aortic Stenosis and PhosphodiEsterase iNhibition With Aortic Valve Replacement (ASPEN-AVR): A Pilot Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "Tadalafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2011-01",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2018-09-12",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01272388"
    },
    {
      "nct_id": "NCT05719805",
      "title": "A Study to Evaluate the Effects of Mavacamten in Healthy Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Participants"
      ],
      "interventions": [
        {
          "name": "Mavacamten",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 84,
      "start_date": "2023-02-20",
      "completion_date": "2023-07-25",
      "has_results": false,
      "last_update_posted_date": "2023-10-12",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 2,
      "location_summary": "Miami, Florida • Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05719805"
    },
    {
      "nct_id": "NCT03015194",
      "title": "NHLBI DIR LAMPOON Study: Intentional Laceration of the Anterior Mitral Leaflet to Prevent Left Ventricular Outflow Tract Obstruction During Transcatheter Mitral Valve Implantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mitral Valve Failure"
      ],
      "interventions": [
        {
          "name": "Edwards SAPIEN 3 transcatheter heart valve",
          "type": "DEVICE"
        },
        {
          "name": "ASHI INTECC Astato XS 20",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2017-06-20",
      "completion_date": "2023-04-13",
      "has_results": true,
      "last_update_posted_date": "2023-08-15",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 6,
      "location_summary": "Washington D.C., District of Columbia • Atlanta, Georgia • Detroit, Michigan + 3 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Falls Church",
          "state": "Virginia"
        },
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03015194"
    },
    {
      "nct_id": "NCT05186818",
      "title": "Phase 3 Trial to Evaluate the Efficacy and Safety of Aficamten Compared to Placebo in Adults With Symptomatic oHCM",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obstructive Hypertrophic Cardiomyopathy (oHCM)"
      ],
      "interventions": [
        {
          "name": "Aficamten (5 mg, 10 mg, 15 mg, and 20 mg)",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match aficamten",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cytokinetics",
      "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": 282,
      "start_date": "2022-02-01",
      "completion_date": "2023-12-18",
      "has_results": true,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 48,
      "location_summary": "Anchorage, Alaska • La Jolla, California • Los Angeles, California + 39 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05186818"
    },
    {
      "nct_id": "NCT04452188",
      "title": "Targeting Normoxia in Neonates With Cyanotic Congenital Heart Disease in the Intra-operative and Immediate Post-operative Period",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypoplastic Left Heart Syndrome",
        "Total Anomalous Pulmonary Venous Return",
        "Truncus Arteriosus",
        "Pulmonary Atresia With Ventricular Septal Defect",
        "Transposition of the Great Arteries",
        "Double Outlet Right Ventricle, Subpulmonary VSD",
        "Tetralogy of Fallot",
        "Double Outlet Right Ventricle With Subaortic Ventricular Septal Defect and Pulmonary Stenosis",
        "Cardiopulmonary Bypass"
      ],
      "interventions": [
        {
          "name": "Normoxia (with controlled re-oxygenation)",
          "type": "OTHER"
        },
        {
          "name": "Standard of care ventilation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "29 Days",
        "sex": "ALL",
        "summary": "Up to 29 Days"
      },
      "enrollment_count": 29,
      "start_date": "2021-01-18",
      "completion_date": "2023-04-20",
      "has_results": true,
      "last_update_posted_date": "2024-06-18",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04452188"
    },
    {
      "nct_id": "NCT05556343",
      "title": "A Study to Evaluate the Efficacy, Safety, and Tolerability of MYK-224 in Participants With Symptomatic Obstructive Hypertrophic Cardiomyopathy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cardiomyopathy, Hypertrophic"
      ],
      "interventions": [
        {
          "name": "MYK-224",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 18,
      "start_date": "2023-01-18",
      "completion_date": "2025-02-27",
      "has_results": true,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-07-22T18:15:48.793Z",
      "location_count": 12,
      "location_summary": "La Jolla, California • Los Angeles, California • San Francisco, California + 9 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05556343"
    }
  ]
}